/* * KQEMU support * * Copyright (c) 2005 Fabrice Bellard * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "config.h" #ifdef _WIN32 #include #include #else #include #include #include #endif #include #include #include #include #include #include #include #include "cpu.h" #include "exec-all.h" #ifdef USE_KQEMU #define DEBUG //#define PROFILE #include #include #include "kqemu.h" /* compatibility stuff */ #ifndef KQEMU_RET_SYSCALL #define KQEMU_RET_SYSCALL 0x0300 /* syscall insn */ #endif #ifndef KQEMU_MAX_RAM_PAGES_TO_UPDATE #define KQEMU_MAX_RAM_PAGES_TO_UPDATE 512 #define KQEMU_RAM_PAGES_UPDATE_ALL (KQEMU_MAX_RAM_PAGES_TO_UPDATE + 1) #endif #ifndef KQEMU_MAX_MODIFIED_RAM_PAGES #define KQEMU_MAX_MODIFIED_RAM_PAGES 512 #endif #ifdef _WIN32 #define KQEMU_DEVICE "\\\\.\\kqemu" #else #define KQEMU_DEVICE "/dev/kqemu" #endif #ifdef _WIN32 #define KQEMU_INVALID_FD INVALID_HANDLE_VALUE HANDLE kqemu_fd = KQEMU_INVALID_FD; #define kqemu_closefd(x) CloseHandle(x) #else #define KQEMU_INVALID_FD -1 int kqemu_fd = KQEMU_INVALID_FD; #define kqemu_closefd(x) close(x) #endif /* 0 = not allowed 1 = user kqemu 2 = kernel kqemu */ int kqemu_allowed = 1; unsigned long *pages_to_flush; unsigned int nb_pages_to_flush; unsigned long *ram_pages_to_update; unsigned int nb_ram_pages_to_update; unsigned long *modified_ram_pages; unsigned int nb_modified_ram_pages; uint8_t *modified_ram_pages_table; extern uint32_t **l1_phys_map; #define cpuid(index, eax, ebx, ecx, edx) \ asm volatile ("cpuid" \ : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx) \ : "0" (index)) #ifdef __x86_64__ static int is_cpuid_supported(void) { return 1; } #else static int is_cpuid_supported(void) { int v0, v1; asm volatile ("pushf\n" "popl %0\n" "movl %0, %1\n" "xorl $0x00200000, %0\n" "pushl %0\n" "popf\n" "pushf\n" "popl %0\n" : "=a" (v0), "=d" (v1) : : "cc"); return (v0 != v1); } #endif static void kqemu_update_cpuid(CPUState *env) { int critical_features_mask, features, ext_features, ext_features_mask; uint32_t eax, ebx, ecx, edx; /* the following features are kept identical on the host and target cpus because they are important for user code. Strictly speaking, only SSE really matters because the OS must support it if the user code uses it. */ critical_features_mask = CPUID_CMOV | CPUID_CX8 | CPUID_FXSR | CPUID_MMX | CPUID_SSE | CPUID_SSE2 | CPUID_SEP; ext_features_mask = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR; if (!is_cpuid_supported()) { features = 0; ext_features = 0; } else { cpuid(1, eax, ebx, ecx, edx); features = edx; ext_features = ecx; } #ifdef __x86_64__ /* NOTE: on x86_64 CPUs, SYSENTER is not supported in compatibility mode, so in order to have the best performances it is better not to use it */ features &= ~CPUID_SEP; #endif env->cpuid_features = (env->cpuid_features & ~critical_features_mask) | (features & critical_features_mask); env->cpuid_ext_features = (env->cpuid_ext_features & ~ext_features_mask) | (ext_features & ext_features_mask); /* XXX: we could update more of the target CPUID state so that the non accelerated code sees exactly the same CPU features as the accelerated code */ } int kqemu_init(CPUState *env) { struct kqemu_init init; int ret, version; #ifdef _WIN32 DWORD temp; #endif if (!kqemu_allowed) return -1; #ifdef _WIN32 kqemu_fd = CreateFile(KQEMU_DEVICE, GENERIC_WRITE | GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); #else kqemu_fd = open(KQEMU_DEVICE, O_RDWR); #endif if (kqemu_fd == KQEMU_INVALID_FD) { fprintf(stderr, "Could not open '%s' - QEMU acceleration layer not activated\n", KQEMU_DEVICE); return -1; } version = 0; #ifdef _WIN32 DeviceIoControl(kqemu_fd, KQEMU_GET_VERSION, NULL, 0, &version, sizeof(version), &temp, NULL); #else ioctl(kqemu_fd, KQEMU_GET_VERSION, &version); #endif if (version != KQEMU_VERSION) { fprintf(stderr, "Version mismatch between kqemu module and qemu (%08x %08x) - disabling kqemu use\n", version, KQEMU_VERSION); goto fail; } pages_to_flush = qemu_vmalloc(KQEMU_MAX_PAGES_TO_FLUSH * sizeof(unsigned long)); if (!pages_to_flush) goto fail; ram_pages_to_update = qemu_vmalloc(KQEMU_MAX_RAM_PAGES_TO_UPDATE * sizeof(unsigned long)); if (!ram_pages_to_update) goto fail; modified_ram_pages = qemu_vmalloc(KQEMU_MAX_MODIFIED_RAM_PAGES * sizeof(unsigned long)); if (!modified_ram_pages) goto fail; modified_ram_pages_table = qemu_mallocz(phys_ram_size >> TARGET_PAGE_BITS); if (!modified_ram_pages_table) goto fail; init.ram_base = phys_ram_base; init.ram_size = phys_ram_size; init.ram_dirty = phys_ram_dirty; init.phys_to_ram_map = l1_phys_map; init.pages_to_flush = pages_to_flush; #if KQEMU_VERSION >= 0x010200 init.ram_pages_to_update = ram_pages_to_update; #endif #if KQEMU_VERSION >= 0x010300 init.modified_ram_pages = modified_ram_pages; #endif #ifdef _WIN32 ret = DeviceIoControl(kqemu_fd, KQEMU_INIT, &init, sizeof(init), NULL, 0, &temp, NULL) == TRUE ? 0 : -1; #else ret = ioctl(kqemu_fd, KQEMU_INIT, &init); #endif if (ret < 0) { fprintf(stderr, "Error %d while initializing QEMU acceleration layer - disabling it for now\n", ret); fail: kqemu_closefd(kqemu_fd); kqemu_fd = KQEMU_INVALID_FD; return -1; } kqemu_update_cpuid(env); env->kqemu_enabled = kqemu_allowed; nb_pages_to_flush = 0; nb_ram_pages_to_update = 0; return 0; } void kqemu_flush_page(CPUState *env, target_ulong addr) { #if defined(DEBUG) if (loglevel & CPU_LOG_INT) { fprintf(logfile, "kqemu_flush_page: addr=" TARGET_FMT_lx "\n", addr); } #endif if (nb_pages_to_flush >= KQEMU_MAX_PAGES_TO_FLUSH) nb_pages_to_flush = KQEMU_FLUSH_ALL; else pages_to_flush[nb_pages_to_flush++] = addr; } void kqemu_flush(CPUState *env, int global) { #ifdef DEBUG if (loglevel & CPU_LOG_INT) { fprintf(logfile, "kqemu_flush:\n"); } #endif nb_pages_to_flush = KQEMU_FLUSH_ALL; } void kqemu_set_notdirty(CPUState *env, ram_addr_t ram_addr) { #ifdef DEBUG if (loglevel & CPU_LOG_INT) { fprintf(logfile, "kqemu_set_notdirty: addr=%08lx\n", ram_addr); } #endif /* we only track transitions to dirty state */ if (phys_ram_dirty[ram_addr >> TARGET_PAGE_BITS] != 0xff) return; if (nb_ram_pages_to_update >= KQEMU_MAX_RAM_PAGES_TO_UPDATE) nb_ram_pages_to_update = KQEMU_RAM_PAGES_UPDATE_ALL; else ram_pages_to_update[nb_ram_pages_to_update++] = ram_addr; } static void kqemu_reset_modified_ram_pages(void) { int i; unsigned long page_index; for(i = 0; i < nb_modified_ram_pages; i++) { page_index = modified_ram_pages[i] >> TARGET_PAGE_BITS; modified_ram_pages_table[page_index] = 0; } nb_modified_ram_pages = 0; } void kqemu_modify_page(CPUState *env, ram_addr_t ram_addr) { unsigned long page_index; int ret; #ifdef _WIN32 DWORD temp; #endif page_index = ram_addr >> TARGET_PAGE_BITS; if (!modified_ram_pages_table[page_index]) { #if 0 printf("%d: modify_page=%08lx\n", nb_modified_ram_pages, ram_addr); #endif modified_ram_pages_table[page_index] = 1; modified_ram_pages[nb_modified_ram_pages++] = ram_addr; if (nb_modified_ram_pages >= KQEMU_MAX_MODIFIED_RAM_PAGES) { /* flush */ #ifdef _WIN32 ret = DeviceIoControl(kqemu_fd, KQEMU_MODIFY_RAM_PAGES, &nb_modified_ram_pages, sizeof(nb_modified_ram_pages), NULL, 0, &temp, NULL); #else ret = ioctl(kqemu_fd, KQEMU_MODIFY_RAM_PAGES, &nb_modified_ram_pages); #endif kqemu_reset_modified_ram_pages(); } } } struct fpstate { uint16_t fpuc; uint16_t dummy1; uint16_t fpus; uint16_t dummy2; uint16_t fptag; uint16_t dummy3; uint32_t fpip; uint32_t fpcs; uint32_t fpoo; uint32_t fpos; uint8_t fpregs1[8 * 10]; }; struct fpxstate { uint16_t fpuc; uint16_t fpus; uint16_t fptag; uint16_t fop; uint32_t fpuip; uint16_t cs_sel; uint16_t dummy0; uint32_t fpudp; uint16_t ds_sel; uint16_t dummy1; uint32_t mxcsr; uint32_t mxcsr_mask; uint8_t fpregs1[8 * 16]; uint8_t xmm_regs[16 * 16]; uint8_t dummy2[96]; }; static struct fpxstate fpx1 __attribute__((aligned(16))); static void restore_native_fp_frstor(CPUState *env) { int fptag, i, j; struct fpstate fp1, *fp = &fp1; fp->fpuc = env->fpuc; fp->fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; fptag = 0; for (i=7; i>=0; i--) { fptag <<= 2; if (env->fptags[i]) { fptag |= 3; } else { /* the FPU automatically computes it */ } } fp->fptag = fptag; j = env->fpstt; for(i = 0;i < 8; i++) { memcpy(&fp->fpregs1[i * 10], &env->fpregs[j].d, 10); j = (j + 1) & 7; } asm volatile ("frstor %0" : "=m" (*fp)); } static void save_native_fp_fsave(CPUState *env) { int fptag, i, j; uint16_t fpuc; struct fpstate fp1, *fp = &fp1; asm volatile ("fsave %0" : : "m" (*fp)); env->fpuc = fp->fpuc; env->fpstt = (fp->fpus >> 11) & 7; env->fpus = fp->fpus & ~0x3800; fptag = fp->fptag; for(i = 0;i < 8; i++) { env->fptags[i] = ((fptag & 3) == 3); fptag >>= 2; } j = env->fpstt; for(i = 0;i < 8; i++) { memcpy(&env->fpregs[j].d, &fp->fpregs1[i * 10], 10); j = (j + 1) & 7; } /* we must restore the default rounding state */ fpuc = 0x037f | (env->fpuc & (3 << 10)); asm volatile("fldcw %0" : : "m" (fpuc)); } static void restore_native_fp_fxrstor(CPUState *env) { struct fpxstate *fp = &fpx1; int i, j, fptag; fp->fpuc = env->fpuc; fp->fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; fptag = 0; for(i = 0; i < 8; i++) fptag |= (env->fptags[i] << i); fp->fptag = fptag ^ 0xff; j = env->fpstt; for(i = 0;i < 8; i++) { memcpy(&fp->fpregs1[i * 16], &env->fpregs[j].d, 10); j = (j + 1) & 7; } if (env->cpuid_features & CPUID_SSE) { fp->mxcsr = env->mxcsr; /* XXX: check if DAZ is not available */ fp->mxcsr_mask = 0xffff; memcpy(fp->xmm_regs, env->xmm_regs, CPU_NB_REGS * 16); } asm volatile ("fxrstor %0" : "=m" (*fp)); } static void save_native_fp_fxsave(CPUState *env) { struct fpxstate *fp = &fpx1; int fptag, i, j; uint16_t fpuc; asm volatile ("fxsave %0" : : "m" (*fp)); env->fpuc = fp->fpuc; env->fpstt = (fp->fpus >> 11) & 7; env->fpus = fp->fpus & ~0x3800; fptag = fp->fptag ^ 0xff; for(i = 0;i < 8; i++) { env->fptags[i] = (fptag >> i) & 1; } j = env->fpstt; for(i = 0;i < 8; i++) { memcpy(&env->fpregs[j].d, &fp->fpregs1[i * 16], 10); j = (j + 1) & 7; } if (env->cpuid_features & CPUID_SSE) { env->mxcsr = fp->mxcsr; memcpy(env->xmm_regs, fp->xmm_regs, CPU_NB_REGS * 16); } /* we must restore the default rounding state */ asm volatile ("fninit"); fpuc = 0x037f | (env->fpuc & (3 << 10)); asm volatile("fldcw %0" : : "m" (fpuc)); } static int do_syscall(CPUState *env, struct kqemu_cpu_state *kenv) { int selector; selector = (env->star >> 32) & 0xffff; #ifdef __x86_64__ if (env->hflags & HF_LMA_MASK) { env->regs[R_ECX] = kenv->next_eip; env->regs[11] = env->eflags; cpu_x86_set_cpl(env, 0); cpu_x86_load_seg_cache(env, R_CS, selector & 0xfffc, 0, 0xffffffff, DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK | DESC_L_MASK); cpu_x86_load_seg_cache(env, R_SS, (selector + 8) & 0xfffc, 0, 0xffffffff, DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | DESC_W_MASK | DESC_A_MASK); env->eflags &= ~env->fmask; if (env->hflags & HF_CS64_MASK) env->eip = env->lstar; else env->eip = env->cstar; } else #endif { env->regs[R_ECX] = (uint32_t)kenv->next_eip; cpu_x86_set_cpl(env, 0); cpu_x86_load_seg_cache(env, R_CS, selector & 0xfffc, 0, 0xffffffff, DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK); cpu_x86_load_seg_cache(env, R_SS, (selector + 8) & 0xfffc, 0, 0xffffffff, DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | DESC_W_MASK | DESC_A_MASK); env->eflags &= ~(IF_MASK | RF_MASK | VM_MASK); env->eip = (uint32_t)env->star; } return 2; } #ifdef CONFIG_PROFILER #define PC_REC_SIZE 1 #define PC_REC_HASH_BITS 16 #define PC_REC_HASH_SIZE (1 << PC_REC_HASH_BITS) typedef struct PCRecord { unsigned long pc; int64_t count; struct PCRecord *next; } PCRecord; static PCRecord *pc_rec_hash[PC_REC_HASH_SIZE]; static int nb_pc_records; static void kqemu_record_pc(unsigned long pc) { unsigned long h; PCRecord **pr, *r; h = pc / PC_REC_SIZE; h = h ^ (h >> PC_REC_HASH_BITS); h &= (PC_REC_HASH_SIZE - 1); pr = &pc_rec_hash[h]; for(;;) { r = *pr; if (r == NULL) break; if (r->pc == pc) { r->count++; return; } pr = &r->next; } r = malloc(sizeof(PCRecord)); r->count = 1; r->pc = pc; r->next = NULL; *pr = r; nb_pc_records++; } static int pc_rec_cmp(const void *p1, const void *p2) { PCRecord *r1 = *(PCRecord **)p1; PCRecord *r2 = *(PCRecord **)p2; if (r1->count < r2->count) return 1; else if (r1->count == r2->count) return 0; else return -1; } static void kqemu_record_flush(void) { PCRecord *r, *r_next; int h; for(h = 0; h < PC_REC_HASH_SIZE; h++) { for(r = pc_rec_hash[h]; r != NULL; r = r_next) { r_next = r->next; free(r); } pc_rec_hash[h] = NULL; } nb_pc_records = 0; } void kqemu_record_dump(void) { PCRecord **pr, *r; int i, h; FILE *f; int64_t total, sum; pr = malloc(sizeof(PCRecord *) * nb_pc_records); i = 0; total = 0; for(h = 0; h < PC_REC_HASH_SIZE; h++) { for(r = pc_rec_hash[h]; r != NULL; r = r->next) { pr[i++] = r; total += r->count; } } qsort(pr, nb_pc_records, sizeof(PCRecord *), pc_rec_cmp); f = fopen("/tmp/kqemu.stats", "w"); if (!f) { perror("/tmp/kqemu.stats"); exit(1); } fprintf(f, "total: %" PRId64 "\n", total); sum = 0; for(i = 0; i < nb_pc_records; i++) { r = pr[i]; sum += r->count; fprintf(f, "%08lx: %" PRId64 " %0.2f%% %0.2f%%\n", r->pc, r->count, (double)r->count / (double)total * 100.0, (double)sum / (double)total * 100.0); } fclose(f); free(pr); kqemu_record_flush(); } #endif int kqemu_cpu_exec(CPUState *env) { struct kqemu_cpu_state kcpu_state, *kenv = &kcpu_state; int ret, cpl, i; #ifdef CONFIG_PROFILER int64_t ti; #endif #ifdef _WIN32 DWORD temp; #endif #ifdef CONFIG_PROFILER ti = profile_getclock(); #endif #ifdef DEBUG if (loglevel & CPU_LOG_INT) { fprintf(logfile, "kqemu: cpu_exec: enter\n"); cpu_dump_state(env, logfile, fprintf, 0); } #endif memcpy(kenv->regs, env->regs, sizeof(kenv->regs)); kenv->eip = env->eip; kenv->eflags = env->eflags; memcpy(&kenv->segs, &env->segs, sizeof(env->segs)); memcpy(&kenv->ldt, &env->ldt, sizeof(env->ldt)); memcpy(&kenv->tr, &env->tr, sizeof(env->tr)); memcpy(&kenv->gdt, &env->gdt, sizeof(env->gdt)); memcpy(&kenv->idt, &env->idt, sizeof(env->idt)); kenv->cr0 = env->cr[0]; kenv->cr2 = env->cr[2]; kenv->cr3 = env->cr[3]; kenv->cr4 = env->cr[4]; kenv->a20_mask = env->a20_mask; #if KQEMU_VERSION >= 0x010100 kenv->efer = env->efer; #endif #if KQEMU_VERSION >= 0x010300 kenv->tsc_offset = 0; kenv->star = env->star; kenv->sysenter_cs = env->sysenter_cs; kenv->sysenter_esp = env->sysenter_esp; kenv->sysenter_eip = env->sysenter_eip; #ifdef __x86_64__ kenv->lstar = env->lstar; kenv->cstar = env->cstar; kenv->fmask = env->fmask; kenv->kernelgsbase = env->kernelgsbase; #endif #endif if (env->dr[7] & 0xff) { kenv->dr7 = env->dr[7]; kenv->dr0 = env->dr[0]; kenv->dr1 = env->dr[1]; kenv->dr2 = env->dr[2]; kenv->dr3 = env->dr[3]; } else { kenv->dr7 = 0; } kenv->dr6 = env->dr[6]; cpl = (env->hflags & HF_CPL_MASK); kenv->cpl = cpl; kenv->nb_pages_to_flush = nb_pages_to_flush; #if KQEMU_VERSION >= 0x010200 kenv->user_only = (env->kqemu_enabled == 1); kenv->nb_ram_pages_to_update = nb_ram_pages_to_update; #endif nb_ram_pages_to_update = 0; #if KQEMU_VERSION >= 0x010300 kenv->nb_modified_ram_pages = nb_modified_ram_pages; #endif kqemu_reset_modified_ram_pages(); if (env->cpuid_features & CPUID_FXSR) restore_native_fp_fxrstor(env); else restore_native_fp_frstor(env); #ifdef _WIN32 if (DeviceIoControl(kqemu_fd, KQEMU_EXEC, kenv, sizeof(struct kqemu_cpu_state), kenv, sizeof(struct kqemu_cpu_state), &temp, NULL)) { ret = kenv->retval; } else { ret = -1; } #else #if KQEMU_VERSION >= 0x010100 ioctl(kqemu_fd, KQEMU_EXEC, kenv); ret = kenv->retval; #else ret = ioctl(kqemu_fd, KQEMU_EXEC, kenv); #endif #endif if (env->cpuid_features & CPUID_FXSR) save_native_fp_fxsave(env); else save_native_fp_fsave(env); memcpy(env->regs, kenv->regs, sizeof(env->regs)); env->eip = kenv->eip; env->eflags = kenv->eflags; memcpy(env->segs, kenv->segs, sizeof(env->segs)); cpu_x86_set_cpl(env, kenv->cpl); memcpy(&env->ldt, &kenv->ldt, sizeof(env->ldt)); #if 0 /* no need to restore that */ memcpy(env->tr, kenv->tr, sizeof(env->tr)); memcpy(env->gdt, kenv->gdt, sizeof(env->gdt)); memcpy(env->idt, kenv->idt, sizeof(env->idt)); env->a20_mask = kenv->a20_mask; #endif env->cr[0] = kenv->cr0; env->cr[4] = kenv->cr4; env->cr[3] = kenv->cr3; env->cr[2] = kenv->cr2; env->dr[6] = kenv->dr6; #if KQEMU_VERSION >= 0x010300 #ifdef __x86_64__ env->kernelgsbase = kenv->kernelgsbase; #endif #endif /* flush pages as indicated by kqemu */ if (kenv->nb_pages_to_flush >= KQEMU_FLUSH_ALL) { tlb_flush(env, 1); } else { for(i = 0; i < kenv->nb_pages_to_flush; i++) { tlb_flush_page(env, pages_to_flush[i]); } } nb_pages_to_flush = 0; #ifdef CONFIG_PROFILER kqemu_time += profile_getclock() - ti; kqemu_exec_count++; #endif #if KQEMU_VERSION >= 0x010200 if (kenv->nb_ram_pages_to_update > 0) { cpu_tlb_update_dirty(env); } #endif #if KQEMU_VERSION >= 0x010300 if (kenv->nb_modified_ram_pages > 0) { for(i = 0; i < kenv->nb_modified_ram_pages; i++) { unsigned long addr; addr = modified_ram_pages[i]; tb_invalidate_phys_page_range(addr, addr + TARGET_PAGE_SIZE, 0); } } #endif /* restore the hidden flags */ { unsigned int new_hflags; #ifdef TARGET_X86_64 if ((env->hflags & HF_LMA_MASK) && (env->segs[R_CS].flags & DESC_L_MASK)) { /* long mode */ new_hflags = HF_CS32_MASK | HF_SS32_MASK | HF_CS64_MASK; } else #endif { /* legacy / compatibility case */ new_hflags = (env->segs[R_CS].flags & DESC_B_MASK) >> (DESC_B_SHIFT - HF_CS32_SHIFT); new_hflags |= (env->segs[R_SS].flags & DESC_B_MASK) >> (DESC_B_SHIFT - HF_SS32_SHIFT); if (!(env->cr[0] & CR0_PE_MASK) || (env->eflags & VM_MASK) || !(env->hflags & HF_CS32_MASK)) { /* XXX: try to avoid this test. The problem comes from the fact that is real mode or vm86 mode we only modify the 'base' and 'selector' fields of the segment cache to go faster. A solution may be to force addseg to one in translate-i386.c. */ new_hflags |= HF_ADDSEG_MASK; } else { new_hflags |= ((env->segs[R_DS].base | env->segs[R_ES].base | env->segs[R_SS].base) != 0) << HF_ADDSEG_SHIFT; } } env->hflags = (env->hflags & ~(HF_CS32_MASK | HF_SS32_MASK | HF_CS64_MASK | HF_ADDSEG_MASK)) | new_hflags; } /* update FPU flags */ env->hflags = (env->hflags & ~(HF_MP_MASK | HF_EM_MASK | HF_TS_MASK)) | ((env->cr[0] << (HF_MP_SHIFT - 1)) & (HF_MP_MASK | HF_EM_MASK | HF_TS_MASK)); if (env->cr[4] & CR4_OSFXSR_MASK) env->hflags |= HF_OSFXSR_MASK; else env->hflags &= ~HF_OSFXSR_MASK; #ifdef DEBUG if (loglevel & CPU_LOG_INT) { fprintf(logfile, "kqemu: kqemu_cpu_exec: ret=0x%x\n", ret); } #endif if (ret == KQEMU_RET_SYSCALL) { /* syscall instruction */ return do_syscall(env, kenv); } else if ((ret & 0xff00) == KQEMU_RET_INT) { env->exception_index = ret & 0xff; env->error_code = 0; env->exception_is_int = 1; env->exception_next_eip = kenv->next_eip; #ifdef CONFIG_PROFILER kqemu_ret_int_count++; #endif #ifdef DEBUG if (loglevel & CPU_LOG_INT) { fprintf(logfile, "kqemu: interrupt v=%02x:\n", env->exception_index); cpu_dump_state(env, logfile, fprintf, 0); } #endif return 1; } else if ((ret & 0xff00) == KQEMU_RET_EXCEPTION) { env->exception_index = ret & 0xff; env->error_code = kenv->error_code; env->exception_is_int = 0; env->exception_next_eip = 0; #ifdef CONFIG_PROFILER kqemu_ret_excp_count++; #endif #ifdef DEBUG if (loglevel & CPU_LOG_INT) { fprintf(logfile, "kqemu: exception v=%02x e=%04x:\n", env->exception_index, env->error_code); cpu_dump_state(env, logfile, fprintf, 0); } #endif return 1; } else if (ret == KQEMU_RET_INTR) { #ifdef CONFIG_PROFILER kqemu_ret_intr_count++; #endif #ifdef DEBUG if (loglevel & CPU_LOG_INT) { cpu_dump_state(env, logfile, fprintf, 0); } #endif return 0; } else if (ret == KQEMU_RET_SOFTMMU) { #ifdef CONFIG_PROFILER { unsigned long pc = env->eip + env->segs[R_CS].base; kqemu_record_pc(pc); } #endif #ifdef DEBUG if (loglevel & CPU_LOG_INT) { cpu_dump_state(env, logfile, fprintf, 0); } #endif return 2; } else { cpu_dump_state(env, stderr, fprintf, 0); fprintf(stderr, "Unsupported return value: 0x%x\n", ret); exit(1); } return 0; } void kqemu_cpu_interrupt(CPUState *env) { #if defined(_WIN32) && KQEMU_VERSION >= 0x010101 /* cancelling the I/O request causes KQEMU to finish executing the current block and successfully returning. */ CancelIo(kqemu_fd); #endif } #endif ' href='#n662'>662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 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# This file is dual licensed under the terms of the Apache License, Version
# 2.0, and the BSD License. See the LICENSE file in the root of this repository
# for complete details.

from __future__ import absolute_import, division, print_function

import binascii
import itertools
import math
import os

import pytest

from cryptography import utils
from cryptography.exceptions import (
    AlreadyFinalized, InvalidSignature, _Reasons
)
from cryptography.hazmat.backends.interfaces import (
    PEMSerializationBackend, RSABackend
)
from cryptography.hazmat.primitives import hashes, serialization
from cryptography.hazmat.primitives.asymmetric import padding, rsa
from cryptography.hazmat.primitives.asymmetric.rsa import (
    RSAPrivateNumbers, RSAPublicNumbers
)

from .fixtures_rsa import (
    RSA_KEY_1024, RSA_KEY_1025, RSA_KEY_1026, RSA_KEY_1027, RSA_KEY_1028,
    RSA_KEY_1029, RSA_KEY_1030, RSA_KEY_1031, RSA_KEY_1536, RSA_KEY_2048,
    RSA_KEY_512, RSA_KEY_512_ALT, RSA_KEY_522, RSA_KEY_599, RSA_KEY_745,
    RSA_KEY_768,
)
from .utils import (
    _check_rsa_private_numbers, generate_rsa_verification_test
)
from ...utils import (
    load_pkcs1_vectors, load_rsa_nist_vectors, load_vectors_from_file,
    raises_unsupported_algorithm
)


@utils.register_interface(padding.AsymmetricPadding)
class DummyPadding(object):
    name = "UNSUPPORTED-PADDING"


class DummyMGF(object):
    _salt_length = 0


@utils.register_interface(serialization.KeySerializationEncryption)
class DummyKeyEncryption(object):
    pass


def _flatten_pkcs1_examples(vectors):
    flattened_vectors = []
    for vector in vectors:
        examples = vector[0].pop("examples")
        for example in examples:
            merged_vector = (vector[0], vector[1], example)
            flattened_vectors.append(merged_vector)

    return flattened_vectors


def test_modular_inverse():
    p = int(
        "d1f9f6c09fd3d38987f7970247b85a6da84907753d42ec52bc23b745093f4fff5cff3"
        "617ce43d00121a9accc0051f519c76e08cf02fc18acfe4c9e6aea18da470a2b611d2e"
        "56a7b35caa2c0239bc041a53cc5875ca0b668ae6377d4b23e932d8c995fd1e58ecfd8"
        "c4b73259c0d8a54d691cca3f6fb85c8a5c1baf588e898d481", 16
    )
    q = int(
        "d1519255eb8f678c86cfd06802d1fbef8b664441ac46b73d33d13a8404580a33a8e74"
        "cb2ea2e2963125b3d454d7a922cef24dd13e55f989cbabf64255a736671f4629a47b5"
        "b2347cfcd669133088d1c159518531025297c2d67c9da856a12e80222cd03b4c6ec0f"
        "86c957cb7bb8de7a127b645ec9e820aa94581e4762e209f01", 16
    )
    assert rsa._modinv(q, p) == int(
        "0275e06afa722999315f8f322275483e15e2fb46d827b17800f99110b269a6732748f"
        "624a382fa2ed1ec68c99f7fc56fb60e76eea51614881f497ba7034c17dde955f92f15"
        "772f8b2b41f3e56d88b1e096cdd293eba4eae1e82db815e0fadea0c4ec971bc6fd875"
        "c20e67e48c31a611e98d32c6213ae4c4d7b53023b2f80c538", 16
    )


@pytest.mark.requires_backend_interface(interface=RSABackend)
class TestRSA(object):
    @pytest.mark.parametrize(
        ("public_exponent", "key_size"),
        itertools.product(
            (3, 5, 65537),
            (1024, 1025, 1026, 1027, 1028, 1029, 1030, 1031, 1536, 2048)
        )
    )
    def test_generate_rsa_keys(self, backend, public_exponent, key_size):
        skey = rsa.generate_private_key(public_exponent, key_size, backend)
        assert skey.key_size == key_size

        _check_rsa_private_numbers(skey.private_numbers())
        pkey = skey.public_key()
        assert isinstance(pkey.public_numbers(), rsa.RSAPublicNumbers)

    def test_generate_bad_public_exponent(self, backend):
        with pytest.raises(ValueError):
            rsa.generate_private_key(public_exponent=1,
                                     key_size=2048,
                                     backend=backend)

        with pytest.raises(ValueError):
            rsa.generate_private_key(public_exponent=4,
                                     key_size=2048,
                                     backend=backend)

    def test_cant_generate_insecure_tiny_key(self, backend):
        with pytest.raises(ValueError):
            rsa.generate_private_key(public_exponent=65537,
                                     key_size=511,
                                     backend=backend)

        with pytest.raises(ValueError):
            rsa.generate_private_key(public_exponent=65537,
                                     key_size=256,
                                     backend=backend)

    @pytest.mark.parametrize(
        "pkcs1_example",
        load_vectors_from_file(
            os.path.join(
                "asymmetric", "RSA", "pkcs-1v2-1d2-vec", "pss-vect.txt"),
            load_pkcs1_vectors
        )
    )
    def test_load_pss_vect_example_keys(self, pkcs1_example):
        secret, public = pkcs1_example

        private_num = rsa.RSAPrivateNumbers(
            p=secret["p"],
            q=secret["q"],
            d=secret["private_exponent"],
            dmp1=secret["dmp1"],
            dmq1=secret["dmq1"],
            iqmp=secret["iqmp"],
            public_numbers=rsa.RSAPublicNumbers(
                e=secret["public_exponent"],
                n=secret["modulus"]
            )
        )
        _check_rsa_private_numbers(private_num)

        public_num = rsa.RSAPublicNumbers(
            e=public["public_exponent"],
            n=public["modulus"]
        )
        assert public_num

        public_num2 = private_num.public_numbers
        assert public_num2

        assert public_num.n == public_num2.n
        assert public_num.e == public_num2.e


def test_rsa_generate_invalid_backend():
    pretend_backend = object()

    with raises_unsupported_algorithm(_Reasons.BACKEND_MISSING_INTERFACE):
        rsa.generate_private_key(65537, 2048, pretend_backend)


@pytest.mark.requires_backend_interface(interface=RSABackend)
class TestRSASignature(object):
    @pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.PKCS1v15()
        ),
        skip_message="Does not support PKCS1v1.5."
    )
    @pytest.mark.parametrize(
        "pkcs1_example",
        _flatten_pkcs1_examples(load_vectors_from_file(
            os.path.join(
                "asymmetric", "RSA", "pkcs1v15sign-vectors.txt"),
            load_pkcs1_vectors
        ))
    )
    def test_pkcs1v15_signing(self, pkcs1_example, backend):
        private, public, example = pkcs1_example
        private_key = rsa.RSAPrivateNumbers(
            p=private["p"],
            q=private["q"],
            d=private["private_exponent"],
            dmp1=private["dmp1"],
            dmq1=private["dmq1"],
            iqmp=private["iqmp"],
            public_numbers=rsa.RSAPublicNumbers(
                e=private["public_exponent"],
                n=private["modulus"]
            )
        ).private_key(backend)
        signer = private_key.signer(padding.PKCS1v15(), hashes.SHA1())
        signer.update(binascii.unhexlify(example["message"]))
        signature = signer.finalize()
        assert binascii.hexlify(signature) == example["signature"]

    @pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.PSS(
                mgf=padding.MGF1(hashes.SHA1()),
                salt_length=padding.PSS.MAX_LENGTH
            )
        ),
        skip_message="Does not support PSS."
    )
    @pytest.mark.parametrize(
        "pkcs1_example",
        _flatten_pkcs1_examples(load_vectors_from_file(
            os.path.join(
                "asymmetric", "RSA", "pkcs-1v2-1d2-vec", "pss-vect.txt"),
            load_pkcs1_vectors
        ))
    )
    def test_pss_signing(self, pkcs1_example, backend):
        private, public, example = pkcs1_example
        private_key = rsa.RSAPrivateNumbers(
            p=private["p"],
            q=private["q"],
            d=private["private_exponent"],
            dmp1=private["dmp1"],
            dmq1=private["dmq1"],
            iqmp=private["iqmp"],
            public_numbers=rsa.RSAPublicNumbers(
                e=private["public_exponent"],
                n=private["modulus"]
            )
        ).private_key(backend)
        public_key = rsa.RSAPublicNumbers(
            e=public["public_exponent"],
            n=public["modulus"]
        ).public_key(backend)
        signer = private_key.signer(
            padding.PSS(
                mgf=padding.MGF1(algorithm=hashes.SHA1()),
                salt_length=padding.PSS.MAX_LENGTH
            ),
            hashes.SHA1()
        )
        signer.update(binascii.unhexlify(example["message"]))
        signature = signer.finalize()
        assert len(signature) == math.ceil(private_key.key_size / 8.0)
        # PSS signatures contain randomness so we can't do an exact
        # signature check. Instead we'll verify that the signature created
        # successfully verifies.
        verifier = public_key.verifier(
            signature,
            padding.PSS(
                mgf=padding.MGF1(algorithm=hashes.SHA1()),
                salt_length=padding.PSS.MAX_LENGTH
            ),
            hashes.SHA1(),
        )
        verifier.update(binascii.unhexlify(example["message"]))
        verifier.verify()

    @pytest.mark.parametrize(
        "hash_alg",
        [hashes.SHA224(), hashes.SHA256(), hashes.SHA384(), hashes.SHA512()]
    )
    def test_pss_signing_sha2(self, hash_alg, backend):
        if not backend.rsa_padding_supported(
            padding.PSS(
                mgf=padding.MGF1(hash_alg),
                salt_length=padding.PSS.MAX_LENGTH
            )
        ):
            pytest.skip(
                "Does not support {0} in MGF1 using PSS.".format(hash_alg.name)
            )
        private_key = RSA_KEY_768.private_key(backend)
        public_key = private_key.public_key()
        pss = padding.PSS(
            mgf=padding.MGF1(hash_alg),
            salt_length=padding.PSS.MAX_LENGTH
        )
        signer = private_key.signer(pss, hash_alg)
        signer.update(b"testing signature")
        signature = signer.finalize()
        verifier = public_key.verifier(signature, pss, hash_alg)
        verifier.update(b"testing signature")
        verifier.verify()

    @pytest.mark.supported(
        only_if=lambda backend: (
            backend.hash_supported(hashes.SHA512()) and
            backend.rsa_padding_supported(
                padding.PSS(
                    mgf=padding.MGF1(hashes.SHA1()),
                    salt_length=padding.PSS.MAX_LENGTH
                )
            )
        ),
        skip_message="Does not support SHA512."
    )
    def test_pss_minimum_key_size_for_digest(self, backend):
        private_key = RSA_KEY_522.private_key(backend)
        signer = private_key.signer(
            padding.PSS(
                mgf=padding.MGF1(hashes.SHA1()),
                salt_length=padding.PSS.MAX_LENGTH
            ),
            hashes.SHA512()
        )
        signer.update(b"no failure")
        signer.finalize()

    @pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.PSS(
                mgf=padding.MGF1(hashes.SHA1()),
                salt_length=padding.PSS.MAX_LENGTH
            )
        ),
        skip_message="Does not support PSS."
    )
    @pytest.mark.supported(
        only_if=lambda backend: backend.hash_supported(hashes.SHA512()),
        skip_message="Does not support SHA512."
    )
    def test_pss_signing_digest_too_large_for_key_size(self, backend):
        private_key = RSA_KEY_512.private_key(backend)
        with pytest.raises(ValueError):
            private_key.signer(
                padding.PSS(
                    mgf=padding.MGF1(hashes.SHA1()),
                    salt_length=padding.PSS.MAX_LENGTH
                ),
                hashes.SHA512()
            )

    @pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.PSS(
                mgf=padding.MGF1(hashes.SHA1()),
                salt_length=padding.PSS.MAX_LENGTH
            )
        ),
        skip_message="Does not support PSS."
    )
    def test_pss_signing_salt_length_too_long(self, backend):
        private_key = RSA_KEY_512.private_key(backend)
        signer = private_key.signer(
            padding.PSS(
                mgf=padding.MGF1(hashes.SHA1()),
                salt_length=1000000
            ),
            hashes.SHA1()
        )
        signer.update(b"failure coming")
        with pytest.raises(ValueError):
            signer.finalize()

    @pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.PKCS1v15()
        ),
        skip_message="Does not support PKCS1v1.5."
    )
    def test_use_after_finalize(self, backend):
        private_key = RSA_KEY_512.private_key(backend)
        signer = private_key.signer(padding.PKCS1v15(), hashes.SHA1())
        signer.update(b"sign me")
        signer.finalize()
        with pytest.raises(AlreadyFinalized):
            signer.finalize()
        with pytest.raises(AlreadyFinalized):
            signer.update(b"more data")

    def test_unsupported_padding(self, backend):
        private_key = RSA_KEY_512.private_key(backend)
        with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_PADDING):
            private_key.signer(DummyPadding(), hashes.SHA1())

    def test_padding_incorrect_type(self, backend):
        private_key = RSA_KEY_512.private_key(backend)
        with pytest.raises(TypeError):
            private_key.signer("notpadding", hashes.SHA1())

    @pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.PSS(mgf=padding.MGF1(hashes.SHA1()), salt_length=0)
        ),
        skip_message="Does not support PSS."
    )
    def test_unsupported_pss_mgf(self, backend):
        private_key = RSA_KEY_512.private_key(backend)
        with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_MGF):
            private_key.signer(
                padding.PSS(
                    mgf=DummyMGF(),
                    salt_length=padding.PSS.MAX_LENGTH
                ),
                hashes.SHA1()
            )

    @pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.PKCS1v15()
        ),
        skip_message="Does not support PKCS1v1.5."
    )
    def test_pkcs1_digest_too_large_for_key_size(self, backend):
        private_key = RSA_KEY_599.private_key(backend)
        signer = private_key.signer(
            padding.PKCS1v15(),
            hashes.SHA512()
        )
        signer.update(b"failure coming")
        with pytest.raises(ValueError):
            signer.finalize()

    @pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.PKCS1v15()
        ),
        skip_message="Does not support PKCS1v1.5."
    )
    def test_pkcs1_minimum_key_size(self, backend):
        private_key = RSA_KEY_745.private_key(backend)
        signer = private_key.signer(
            padding.PKCS1v15(),
            hashes.SHA512()
        )
        signer.update(b"no failure")
        signer.finalize()


@pytest.mark.requires_backend_interface(interface=RSABackend)
class TestRSAVerification(object):
    @pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.PKCS1v15()
        ),
        skip_message="Does not support PKCS1v1.5."
    )
    @pytest.mark.parametrize(
        "pkcs1_example",
        _flatten_pkcs1_examples(load_vectors_from_file(
            os.path.join(
                "asymmetric", "RSA", "pkcs1v15sign-vectors.txt"),
            load_pkcs1_vectors
        ))
    )
    def test_pkcs1v15_verification(self, pkcs1_example, backend):
        private, public, example = pkcs1_example
        public_key = rsa.RSAPublicNumbers(
            e=public["public_exponent"],
            n=public["modulus"]
        ).public_key(backend)
        verifier = public_key.verifier(
            binascii.unhexlify(example["signature"]),
            padding.PKCS1v15(),
            hashes.SHA1()
        )
        verifier.update(binascii.unhexlify(example["message"]))
        verifier.verify()

    @pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.PKCS1v15()
        ),
        skip_message="Does not support PKCS1v1.5."
    )
    def test_invalid_pkcs1v15_signature_wrong_data(self, backend):
        private_key = RSA_KEY_512.private_key(backend)
        public_key = private_key.public_key()
        signer = private_key.signer(padding.PKCS1v15(), hashes.SHA1())
        signer.update(b"sign me")
        signature = signer.finalize()
        verifier = public_key.verifier(
            signature,
            padding.PKCS1v15(),
            hashes.SHA1()
        )
        verifier.update(b"incorrect data")
        with pytest.raises(InvalidSignature):
            verifier.verify()

    @pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.PKCS1v15()
        ),
        skip_message="Does not support PKCS1v1.5."
    )
    def test_invalid_pkcs1v15_signature_wrong_key(self, backend):
        private_key = RSA_KEY_512.private_key(backend)
        private_key2 = RSA_KEY_512_ALT.private_key(backend)
        public_key = private_key2.public_key()
        signer = private_key.signer(padding.PKCS1v15(), hashes.SHA1())
        signer.update(b"sign me")
        signature = signer.finalize()
        verifier = public_key.verifier(
            signature,
            padding.PKCS1v15(),
            hashes.SHA1()
        )
        verifier.update(b"sign me")
        with pytest.raises(InvalidSignature):
            verifier.verify()

    @pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.PSS(
                mgf=padding.MGF1(hashes.SHA1()),
                salt_length=20
            )
        ),
        skip_message="Does not support PSS."
    )
    @pytest.mark.parametrize(
        "pkcs1_example",
        _flatten_pkcs1_examples(load_vectors_from_file(
            os.path.join(
                "asymmetric", "RSA", "pkcs-1v2-1d2-vec", "pss-vect.txt"),
            load_pkcs1_vectors
        ))
    )
    def test_pss_verification(self, pkcs1_example, backend):
        private, public, example = pkcs1_example
        public_key = rsa.RSAPublicNumbers(
            e=public["public_exponent"],
            n=public["modulus"]
        ).public_key(backend)
        verifier = public_key.verifier(
            binascii.unhexlify(example["signature"]),
            padding.PSS(
                mgf=padding.MGF1(algorithm=hashes.SHA1()),
                salt_length=20
            ),
            hashes.SHA1()
        )
        verifier.update(binascii.unhexlify(example["message"]))
        verifier.verify()

    @pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.PSS(
                mgf=padding.MGF1(hashes.SHA1()),
                salt_length=padding.PSS.MAX_LENGTH
            )
        ),
        skip_message="Does not support PSS."
    )
    def test_invalid_pss_signature_wrong_data(self, backend):
        public_key = rsa.RSAPublicNumbers(
            n=int(
                b"dffc2137d5e810cde9e4b4612f5796447218bab913b3fa98bdf7982e4fa6"
                b"ec4d6653ef2b29fb1642b095befcbea6decc178fb4bed243d3c3592c6854"
                b"6af2d3f3", 16
            ),
            e=65537
        ).public_key(backend)
        signature = binascii.unhexlify(
            b"0e68c3649df91c5bc3665f96e157efa75b71934aaa514d91e94ca8418d100f45"
            b"6f05288e58525f99666bab052adcffdf7186eb40f583bd38d98c97d3d524808b"
        )
        verifier = public_key.verifier(
            signature,
            padding.PSS(
                mgf=padding.MGF1(algorithm=hashes.SHA1()),
                salt_length=padding.PSS.MAX_LENGTH
            ),
            hashes.SHA1()
        )
        verifier.update(b"incorrect data")
        with pytest.raises(InvalidSignature):
            verifier.verify()

    @pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.PSS(
                mgf=padding.MGF1(hashes.SHA1()),
                salt_length=padding.PSS.MAX_LENGTH
            )
        ),
        skip_message="Does not support PSS."
    )
    def test_invalid_pss_signature_wrong_key(self, backend):
        signature = binascii.unhexlify(
            b"3a1880165014ba6eb53cc1449d13e5132ebcc0cfd9ade6d7a2494a0503bd0826"
            b"f8a46c431e0d7be0ca3e453f8b2b009e2733764da7927cc6dbe7a021437a242e"
        )
        public_key = rsa.RSAPublicNumbers(
            n=int(
                b"381201f4905d67dfeb3dec131a0fbea773489227ec7a1448c3109189ac68"
                b"5a95441be90866a14c4d2e139cd16db540ec6c7abab13ffff91443fd46a8"
                b"960cbb7658ded26a5c95c86f6e40384e1c1239c63e541ba221191c4dd303"
                b"231b42e33c6dbddf5ec9a746f09bf0c25d0f8d27f93ee0ae5c0d723348f4"
                b"030d3581e13522e1", 16
            ),
            e=65537
        ).public_key(backend)
        verifier = public_key.verifier(
            signature,
            padding.PSS(
                mgf=padding.MGF1(algorithm=hashes.SHA1()),
                salt_length=padding.PSS.MAX_LENGTH
            ),
            hashes.SHA1()
        )
        verifier.update(b"sign me")
        with pytest.raises(InvalidSignature):
            verifier.verify()

    @pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.PSS(
                mgf=padding.MGF1(hashes.SHA1()),
                salt_length=padding.PSS.MAX_LENGTH
            )
        ),
        skip_message="Does not support PSS."
    )
    def test_invalid_pss_signature_data_too_large_for_modulus(self, backend):
        signature = binascii.unhexlify(
            b"cb43bde4f7ab89eb4a79c6e8dd67e0d1af60715da64429d90c716a490b799c29"
            b"194cf8046509c6ed851052367a74e2e92d9b38947ed74332acb115a03fcc0222"
        )
        public_key = rsa.RSAPublicNumbers(
            n=int(
                b"381201f4905d67dfeb3dec131a0fbea773489227ec7a1448c3109189ac68"
                b"5a95441be90866a14c4d2e139cd16db540ec6c7abab13ffff91443fd46a8"
                b"960cbb7658ded26a5c95c86f6e40384e1c1239c63e541ba221191c4dd303"
                b"231b42e33c6dbddf5ec9a746f09bf0c25d0f8d27f93ee0ae5c0d723348f4"
                b"030d3581e13522", 16
            ),
            e=65537
        ).public_key(backend)
        verifier = public_key.verifier(
            signature,
            padding.PSS(
                mgf=padding.MGF1(algorithm=hashes.SHA1()),
                salt_length=padding.PSS.MAX_LENGTH
            ),
            hashes.SHA1()
        )
        verifier.update(b"sign me")
        with pytest.raises(InvalidSignature):
            verifier.verify()

    @pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.PKCS1v15()
        ),
        skip_message="Does not support PKCS1v1.5."
    )
    def test_use_after_finalize(self, backend):
        private_key = RSA_KEY_512.private_key(backend)
        public_key = private_key.public_key()
        signer = private_key.signer(padding.PKCS1v15(), hashes.SHA1())
        signer.update(b"sign me")
        signature = signer.finalize()

        verifier = public_key.verifier(
            signature,
            padding.PKCS1v15(),
            hashes.SHA1()
        )
        verifier.update(b"sign me")
        verifier.verify()
        with pytest.raises(AlreadyFinalized):
            verifier.verify()
        with pytest.raises(AlreadyFinalized):
            verifier.update(b"more data")

    def test_unsupported_padding(self, backend):
        private_key = RSA_KEY_512.private_key(backend)
        public_key = private_key.public_key()
        with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_PADDING):
            public_key.verifier(b"sig", DummyPadding(), hashes.SHA1())

    @pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.PKCS1v15()
        ),
        skip_message="Does not support PKCS1v1.5."
    )
    def test_signature_not_bytes(self, backend):
        public_key = RSA_KEY_512.public_numbers.public_key(backend)
        signature = 1234

        with pytest.raises(TypeError):
            public_key.verifier(
                signature,
                padding.PKCS1v15(),
                hashes.SHA1()
            )

    def test_padding_incorrect_type(self, backend):
        private_key = RSA_KEY_512.private_key(backend)
        public_key = private_key.public_key()
        with pytest.raises(TypeError):
            public_key.verifier(b"sig", "notpadding", hashes.SHA1())

    @pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.PSS(mgf=padding.MGF1(hashes.SHA1()), salt_length=0)
        ),
        skip_message="Does not support PSS."
    )
    def test_unsupported_pss_mgf(self, backend):
        private_key = RSA_KEY_512.private_key(backend)
        public_key = private_key.public_key()
        with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_MGF):
            public_key.verifier(
                b"sig",
                padding.PSS(
                    mgf=DummyMGF(),
                    salt_length=padding.PSS.MAX_LENGTH
                ),
                hashes.SHA1()
            )

    @pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.PSS(
                mgf=padding.MGF1(hashes.SHA1()),
                salt_length=padding.PSS.MAX_LENGTH
            )
        ),
        skip_message="Does not support PSS."
    )
    @pytest.mark.supported(
        only_if=lambda backend: backend.hash_supported(hashes.SHA512()),
        skip_message="Does not support SHA512."
    )
    def test_pss_verify_digest_too_large_for_key_size(self, backend):
        private_key = RSA_KEY_512.private_key(backend)
        signature = binascii.unhexlify(
            b"8b9a3ae9fb3b64158f3476dd8d8a1f1425444e98940e0926378baa9944d219d8"
            b"534c050ef6b19b1bdc6eb4da422e89161106a6f5b5cc16135b11eb6439b646bd"
        )
        public_key = private_key.public_key()
        with pytest.raises(ValueError):
            public_key.verifier(
                signature,
                padding.PSS(
                    mgf=padding.MGF1(algorithm=hashes.SHA1()),
                    salt_length=padding.PSS.MAX_LENGTH
                ),
                hashes.SHA512()
            )

    @pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.PSS(
                mgf=padding.MGF1(hashes.SHA1()),
                salt_length=padding.PSS.MAX_LENGTH
            )
        ),
        skip_message="Does not support PSS."
    )
    def test_pss_verify_salt_length_too_long(self, backend):
        signature = binascii.unhexlify(
            b"8b9a3ae9fb3b64158f3476dd8d8a1f1425444e98940e0926378baa9944d219d8"
            b"534c050ef6b19b1bdc6eb4da422e89161106a6f5b5cc16135b11eb6439b646bd"
        )
        public_key = rsa.RSAPublicNumbers(
            n=int(
                b"d309e4612809437548b747d7f9eb9cd3340f54fe42bb3f84a36933b0839c"
                b"11b0c8b7f67e11f7252370161e31159c49c784d4bc41c42a78ce0f0b40a3"
                b"ca8ffb91", 16
            ),
            e=65537
        ).public_key(backend)
        verifier = public_key.verifier(
            signature,
            padding.PSS(
                mgf=padding.MGF1(
                    algorithm=hashes.SHA1(),
                ),
                salt_length=1000000
            ),
            hashes.SHA1()
        )
        verifier.update(b"sign me")
        with pytest.raises(InvalidSignature):
            verifier.verify()


@pytest.mark.requires_backend_interface(interface=RSABackend)
class TestRSAPSSMGF1Verification(object):
    test_rsa_pss_mgf1_sha1 = pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.PSS(
                mgf=padding.MGF1(hashes.SHA1()),
                salt_length=padding.PSS.MAX_LENGTH
            )
        ),
        skip_message="Does not support PSS using MGF1 with SHA1."
    )(generate_rsa_verification_test(
        load_rsa_nist_vectors,
        os.path.join("asymmetric", "RSA", "FIPS_186-2"),
        [
            "SigGenPSS_186-2.rsp",
            "SigGenPSS_186-3.rsp",
            "SigVerPSS_186-3.rsp",
        ],
        hashes.SHA1(),
        lambda params, hash_alg: padding.PSS(
            mgf=padding.MGF1(
                algorithm=hash_alg,
            ),
            salt_length=params["salt_length"]
        )
    ))

    test_rsa_pss_mgf1_sha224 = pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.PSS(
                mgf=padding.MGF1(hashes.SHA224()),
                salt_length=padding.PSS.MAX_LENGTH
            )
        ),
        skip_message="Does not support PSS using MGF1 with SHA224."
    )(generate_rsa_verification_test(
        load_rsa_nist_vectors,
        os.path.join("asymmetric", "RSA", "FIPS_186-2"),
        [
            "SigGenPSS_186-2.rsp",
            "SigGenPSS_186-3.rsp",
            "SigVerPSS_186-3.rsp",
        ],
        hashes.SHA224(),
        lambda params, hash_alg: padding.PSS(
            mgf=padding.MGF1(
                algorithm=hash_alg,
            ),
            salt_length=params["salt_length"]
        )
    ))

    test_rsa_pss_mgf1_sha256 = pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.PSS(
                mgf=padding.MGF1(hashes.SHA256()),
                salt_length=padding.PSS.MAX_LENGTH
            )
        ),
        skip_message="Does not support PSS using MGF1 with SHA256."
    )(generate_rsa_verification_test(
        load_rsa_nist_vectors,
        os.path.join("asymmetric", "RSA", "FIPS_186-2"),
        [
            "SigGenPSS_186-2.rsp",
            "SigGenPSS_186-3.rsp",
            "SigVerPSS_186-3.rsp",
        ],
        hashes.SHA256(),
        lambda params, hash_alg: padding.PSS(
            mgf=padding.MGF1(
                algorithm=hash_alg,
            ),
            salt_length=params["salt_length"]
        )
    ))

    test_rsa_pss_mgf1_sha384 = pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.PSS(
                mgf=padding.MGF1(hashes.SHA384()),
                salt_length=padding.PSS.MAX_LENGTH
            )
        ),
        skip_message="Does not support PSS using MGF1 with SHA384."
    )(generate_rsa_verification_test(
        load_rsa_nist_vectors,
        os.path.join("asymmetric", "RSA", "FIPS_186-2"),
        [
            "SigGenPSS_186-2.rsp",
            "SigGenPSS_186-3.rsp",
            "SigVerPSS_186-3.rsp",
        ],
        hashes.SHA384(),
        lambda params, hash_alg: padding.PSS(
            mgf=padding.MGF1(
                algorithm=hash_alg,
            ),
            salt_length=params["salt_length"]
        )
    ))

    test_rsa_pss_mgf1_sha512 = pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.PSS(
                mgf=padding.MGF1(hashes.SHA512()),
                salt_length=padding.PSS.MAX_LENGTH
            )
        ),
        skip_message="Does not support PSS using MGF1 with SHA512."
    )(generate_rsa_verification_test(
        load_rsa_nist_vectors,
        os.path.join("asymmetric", "RSA", "FIPS_186-2"),
        [
            "SigGenPSS_186-2.rsp",
            "SigGenPSS_186-3.rsp",
            "SigVerPSS_186-3.rsp",
        ],
        hashes.SHA512(),
        lambda params, hash_alg: padding.PSS(
            mgf=padding.MGF1(
                algorithm=hash_alg,
            ),
            salt_length=params["salt_length"]
        )
    ))


@pytest.mark.requires_backend_interface(interface=RSABackend)
class TestRSAPKCS1Verification(object):
    test_rsa_pkcs1v15_verify_sha1 = pytest.mark.supported(
        only_if=lambda backend: (
            backend.hash_supported(hashes.SHA1()) and
            backend.rsa_padding_supported(padding.PKCS1v15())
        ),
        skip_message="Does not support SHA1 and PKCS1v1.5."
    )(generate_rsa_verification_test(
        load_rsa_nist_vectors,
        os.path.join("asymmetric", "RSA", "FIPS_186-2"),
        [
            "SigGen15_186-2.rsp",
            "SigGen15_186-3.rsp",
            "SigVer15_186-3.rsp",
        ],
        hashes.SHA1(),
        lambda params, hash_alg: padding.PKCS1v15()
    ))

    test_rsa_pkcs1v15_verify_sha224 = pytest.mark.supported(
        only_if=lambda backend: (
            backend.hash_supported(hashes.SHA224()) and
            backend.rsa_padding_supported(padding.PKCS1v15())
        ),
        skip_message="Does not support SHA224 and PKCS1v1.5."
    )(generate_rsa_verification_test(
        load_rsa_nist_vectors,
        os.path.join("asymmetric", "RSA", "FIPS_186-2"),
        [
            "SigGen15_186-2.rsp",
            "SigGen15_186-3.rsp",
            "SigVer15_186-3.rsp",
        ],
        hashes.SHA224(),
        lambda params, hash_alg: padding.PKCS1v15()
    ))

    test_rsa_pkcs1v15_verify_sha256 = pytest.mark.supported(
        only_if=lambda backend: (
            backend.hash_supported(hashes.SHA256()) and
            backend.rsa_padding_supported(padding.PKCS1v15())
        ),
        skip_message="Does not support SHA256 and PKCS1v1.5."
    )(generate_rsa_verification_test(
        load_rsa_nist_vectors,
        os.path.join("asymmetric", "RSA", "FIPS_186-2"),
        [
            "SigGen15_186-2.rsp",
            "SigGen15_186-3.rsp",
            "SigVer15_186-3.rsp",
        ],
        hashes.SHA256(),
        lambda params, hash_alg: padding.PKCS1v15()
    ))

    test_rsa_pkcs1v15_verify_sha384 = pytest.mark.supported(
        only_if=lambda backend: (
            backend.hash_supported(hashes.SHA384()) and
            backend.rsa_padding_supported(padding.PKCS1v15())
        ),
        skip_message="Does not support SHA384 and PKCS1v1.5."
    )(generate_rsa_verification_test(
        load_rsa_nist_vectors,
        os.path.join("asymmetric", "RSA", "FIPS_186-2"),
        [
            "SigGen15_186-2.rsp",
            "SigGen15_186-3.rsp",
            "SigVer15_186-3.rsp",
        ],
        hashes.SHA384(),
        lambda params, hash_alg: padding.PKCS1v15()
    ))

    test_rsa_pkcs1v15_verify_sha512 = pytest.mark.supported(
        only_if=lambda backend: (
            backend.hash_supported(hashes.SHA512()) and
            backend.rsa_padding_supported(padding.PKCS1v15())
        ),
        skip_message="Does not support SHA512 and PKCS1v1.5."
    )(generate_rsa_verification_test(
        load_rsa_nist_vectors,
        os.path.join("asymmetric", "RSA", "FIPS_186-2"),
        [
            "SigGen15_186-2.rsp",
            "SigGen15_186-3.rsp",
            "SigVer15_186-3.rsp",
        ],
        hashes.SHA512(),
        lambda params, hash_alg: padding.PKCS1v15()
    ))


class TestPSS(object):
    def test_invalid_salt_length_not_integer(self):
        with pytest.raises(TypeError):
            padding.PSS(
                mgf=padding.MGF1(
                    hashes.SHA1()
                ),
                salt_length=b"not_a_length"
            )

    def test_invalid_salt_length_negative_integer(self):
        with pytest.raises(ValueError):
            padding.PSS(
                mgf=padding.MGF1(
                    hashes.SHA1()
                ),
                salt_length=-1
            )

    def test_valid_pss_parameters(self):
        algorithm = hashes.SHA1()
        salt_length = algorithm.digest_size
        mgf = padding.MGF1(algorithm)
        pss = padding.PSS(mgf=mgf, salt_length=salt_length)
        assert pss._mgf == mgf
        assert pss._salt_length == salt_length

    def test_valid_pss_parameters_maximum(self):
        algorithm = hashes.SHA1()
        mgf = padding.MGF1(algorithm)
        pss = padding.PSS(mgf=mgf, salt_length=padding.PSS.MAX_LENGTH)
        assert pss._mgf == mgf
        assert pss._salt_length == padding.PSS.MAX_LENGTH


class TestMGF1(object):
    def test_invalid_hash_algorithm(self):
        with pytest.raises(TypeError):
            padding.MGF1(b"not_a_hash")

    def test_valid_mgf1_parameters(self):
        algorithm = hashes.SHA1()
        mgf = padding.MGF1(algorithm)
        assert mgf._algorithm == algorithm


class TestOAEP(object):
    def test_invalid_algorithm(self):
        mgf = padding.MGF1(hashes.SHA1())
        with pytest.raises(TypeError):
            padding.OAEP(
                mgf=mgf,
                algorithm=b"",
                label=None
            )


@pytest.mark.requires_backend_interface(interface=RSABackend)
class TestRSADecryption(object):
    @pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.PKCS1v15()
        ),
        skip_message="Does not support PKCS1v1.5."
    )
    @pytest.mark.parametrize(
        "vector",
        _flatten_pkcs1_examples(load_vectors_from_file(
            os.path.join(
                "asymmetric", "RSA", "pkcs1v15crypt-vectors.txt"),
            load_pkcs1_vectors
        ))
    )
    def test_decrypt_pkcs1v15_vectors(self, vector, backend):
        private, public, example = vector
        skey = rsa.RSAPrivateNumbers(
            p=private["p"],
            q=private["q"],
            d=private["private_exponent"],
            dmp1=private["dmp1"],
            dmq1=private["dmq1"],
            iqmp=private["iqmp"],
            public_numbers=rsa.RSAPublicNumbers(
                e=private["public_exponent"],
                n=private["modulus"]
            )
        ).private_key(backend)
        ciphertext = binascii.unhexlify(example["encryption"])
        assert len(ciphertext) == math.ceil(skey.key_size / 8.0)
        message = skey.decrypt(ciphertext, padding.PKCS1v15())
        assert message == binascii.unhexlify(example["message"])

    def test_unsupported_padding(self, backend):
        private_key = RSA_KEY_512.private_key(backend)
        with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_PADDING):
            private_key.decrypt(b"0" * 64, DummyPadding())

    @pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.PKCS1v15()
        ),
        skip_message="Does not support PKCS1v1.5."
    )
    def test_decrypt_invalid_decrypt(self, backend):
        private_key = RSA_KEY_512.private_key(backend)
        with pytest.raises(ValueError):
            private_key.decrypt(
                b"\x00" * 64,
                padding.PKCS1v15()
            )

    @pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.PKCS1v15()
        ),
        skip_message="Does not support PKCS1v1.5."
    )
    def test_decrypt_ciphertext_too_large(self, backend):
        private_key = RSA_KEY_512.private_key(backend)
        with pytest.raises(ValueError):
            private_key.decrypt(
                b"\x00" * 65,
                padding.PKCS1v15()
            )

    @pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.PKCS1v15()
        ),
        skip_message="Does not support PKCS1v1.5."
    )
    def test_decrypt_ciphertext_too_small(self, backend):
        private_key = RSA_KEY_512.private_key(backend)
        ct = binascii.unhexlify(
            b"50b4c14136bd198c2f3c3ed243fce036e168d56517984a263cd66492b80804f1"
            b"69d210f2b9bdfb48b12f9ea05009c77da257cc600ccefe3a6283789d8ea0"
        )
        with pytest.raises(ValueError):
            private_key.decrypt(
                ct,
                padding.PKCS1v15()
            )

    @pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.OAEP(
                mgf=padding.MGF1(algorithm=hashes.SHA1()),
                algorithm=hashes.SHA1(),
                label=None
            )
        ),
        skip_message="Does not support OAEP."
    )
    @pytest.mark.parametrize(
        "vector",
        _flatten_pkcs1_examples(load_vectors_from_file(
            os.path.join(
                "asymmetric", "RSA", "pkcs-1v2-1d2-vec", "oaep-vect.txt"),
            load_pkcs1_vectors
        ))
    )
    def test_decrypt_oaep_vectors(self, vector, backend):
        private, public, example = vector
        skey = rsa.RSAPrivateNumbers(
            p=private["p"],
            q=private["q"],
            d=private["private_exponent"],
            dmp1=private["dmp1"],
            dmq1=private["dmq1"],
            iqmp=private["iqmp"],
            public_numbers=rsa.RSAPublicNumbers(
                e=private["public_exponent"],
                n=private["modulus"]
            )
        ).private_key(backend)
        message = skey.decrypt(
            binascii.unhexlify(example["encryption"]),
            padding.OAEP(
                mgf=padding.MGF1(algorithm=hashes.SHA1()),
                algorithm=hashes.SHA1(),
                label=None
            )
        )
        assert message == binascii.unhexlify(example["message"])

    def test_unsupported_oaep_mgf(self, backend):
        private_key = RSA_KEY_512.private_key(backend)
        with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_MGF):
            private_key.decrypt(
                b"0" * 64,
                padding.OAEP(
                    mgf=DummyMGF(),
                    algorithm=hashes.SHA1(),
                    label=None
                )
            )


@pytest.mark.requires_backend_interface(interface=RSABackend)
class TestRSAEncryption(object):
    @pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.OAEP(
                mgf=padding.MGF1(algorithm=hashes.SHA1()),
                algorithm=hashes.SHA1(),
                label=None
            )
        ),
        skip_message="Does not support OAEP."
    )
    @pytest.mark.parametrize(
        ("key_data", "pad"),
        itertools.product(
            (RSA_KEY_1024, RSA_KEY_1025, RSA_KEY_1026, RSA_KEY_1027,
             RSA_KEY_1028, RSA_KEY_1029, RSA_KEY_1030, RSA_KEY_1031,
             RSA_KEY_1536, RSA_KEY_2048),
            [
                padding.OAEP(
                    mgf=padding.MGF1(algorithm=hashes.SHA1()),
                    algorithm=hashes.SHA1(),
                    label=None
                )
            ]
        )
    )
    def test_rsa_encrypt_oaep(self, key_data, pad, backend):
        private_key = key_data.private_key(backend)
        pt = b"encrypt me!"
        public_key = private_key.public_key()
        ct = public_key.encrypt(pt, pad)
        assert ct != pt
        assert len(ct) == math.ceil(public_key.key_size / 8.0)
        recovered_pt = private_key.decrypt(ct, pad)
        assert recovered_pt == pt

    @pytest.mark.supported(
        only_if=lambda backend: backend.rsa_padding_supported(
            padding.PKCS1v15()
        ),
        skip_message="Does not support PKCS1v1.5."
    )
    @pytest.mark.parametrize(
        ("key_data", "pad"),
        itertools.product(
            (RSA_KEY_1024, RSA_KEY_1025, RSA_KEY_1026, RSA_KEY_1027,
             RSA_KEY_1028, RSA_KEY_1029, RSA_KEY_1030, RSA_KEY_1031,
             RSA_KEY_1536, RSA_KEY_2048),
            [padding.PKCS1v15()]
        )
    )
    def test_rsa_encrypt_pkcs1v15(self, key_data, pad, backend):
        private_key = key_data.private_key(backend)
        pt = b"encrypt me!"
        public_key = private_key.public_key()
        ct = public_key.encrypt(pt, pad)
        assert ct != pt
        assert len(ct) == math.ceil(public_key.key_size / 8.0)
        recovered_pt = private_key.decrypt(ct, pad)
        assert recovered_pt == pt

    @pytest.mark.parametrize(
        ("key_data", "pad"),
        itertools.product(
            (RSA_KEY_1024, RSA_KEY_1025, RSA_KEY_1026, RSA_KEY_1027,
             RSA_KEY_1028, RSA_KEY_1029, RSA_KEY_1030, RSA_KEY_1031,
             RSA_KEY_1536, RSA_KEY_2048),
            (
                padding.OAEP(
                    mgf=padding.MGF1(algorithm=hashes.SHA1()),
                    algorithm=hashes.SHA1(),
                    label=None
                ),
                padding.PKCS1v15()
            )
        )
    )
    def test_rsa_encrypt_key_too_small(self, key_data, pad, backend):
        private_key = key_data.private_key(backend)
        public_key = private_key.public_key()
        # Slightly smaller than the key size but not enough for padding.
        with pytest.raises(ValueError):
            public_key.encrypt(
                b"\x00" * (private_key.key_size // 8 - 1),
                pad
            )

        # Larger than the key size.
        with pytest.raises(ValueError):
            public_key.encrypt(
                b"\x00" * (private_key.key_size // 8 + 5),
                pad
            )

    def test_unsupported_padding(self, backend):
        private_key = RSA_KEY_512.private_key(backend)
        public_key = private_key.public_key()

        with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_PADDING):
            public_key.encrypt(b"somedata", DummyPadding())
        with pytest.raises(TypeError):
            public_key.encrypt(b"somedata", padding=object())

    def test_unsupported_oaep_mgf(self, backend):
        private_key = RSA_KEY_512.private_key(backend)
        public_key = private_key.public_key()

        with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_MGF):
            public_key.encrypt(
                b"ciphertext",
                padding.OAEP(
                    mgf=DummyMGF(),
                    algorithm=hashes.SHA1(),
                    label=None
                )
            )


@pytest.mark.requires_backend_interface(interface=RSABackend)
class TestRSANumbers(object):
    def test_rsa_public_numbers(self):
        public_numbers = rsa.RSAPublicNumbers(e=1, n=15)
        assert public_numbers.e == 1
        assert public_numbers.n == 15

    def test_rsa_private_numbers(self):
        public_numbers = rsa.RSAPublicNumbers(e=1, n=15)
        private_numbers = rsa.RSAPrivateNumbers(
            p=3,
            q=5,
            d=1,
            dmp1=1,
            dmq1=1,
            iqmp=2,
            public_numbers=public_numbers
        )

        assert private_numbers.p == 3
        assert private_numbers.q == 5
        assert private_numbers.d == 1
        assert private_numbers.dmp1 == 1
        assert private_numbers.dmq1 == 1
        assert private_numbers.iqmp == 2
        assert private_numbers.public_numbers == public_numbers

    def test_rsa_private_numbers_create_key(self, backend):
        private_key = RSA_KEY_1024.private_key(backend)
        assert private_key

    def test_rsa_public_numbers_create_key(self, backend):
        public_key = RSA_KEY_1024.public_numbers.public_key(backend)
        assert public_key

    def test_public_numbers_invalid_types(self):
        with pytest.raises(TypeError):
            rsa.RSAPublicNumbers(e=None, n=15)

        with pytest.raises(TypeError):
            rsa.RSAPublicNumbers(e=1, n=None)

    def test_private_numbers_invalid_types(self):
        public_numbers = rsa.RSAPublicNumbers(e=1, n=15)

        with pytest.raises(TypeError):
            rsa.RSAPrivateNumbers(
                p=None,
                q=5,
                d=1,
                dmp1=1,
                dmq1=1,
                iqmp=2,
                public_numbers=public_numbers
            )

        with pytest.raises(TypeError):
            rsa.RSAPrivateNumbers(
                p=3,
                q=None,
                d=1,
                dmp1=1,
                dmq1=1,
                iqmp=2,
                public_numbers=public_numbers
            )

        with pytest.raises(TypeError):
            rsa.RSAPrivateNumbers(
                p=3,
                q=5,
                d=None,
                dmp1=1,
                dmq1=1,
                iqmp=2,
                public_numbers=public_numbers
            )

        with pytest.raises(TypeError):
            rsa.RSAPrivateNumbers(
                p=3,
                q=5,
                d=1,
                dmp1=None,
                dmq1=1,
                iqmp=2,
                public_numbers=public_numbers
            )

        with pytest.raises(TypeError):
            rsa.RSAPrivateNumbers(
                p=3,
                q=5,
                d=1,
                dmp1=1,
                dmq1=None,
                iqmp=2,
                public_numbers=public_numbers
            )

        with pytest.raises(TypeError):
            rsa.RSAPrivateNumbers(
                p=3,
                q=5,
                d=1,
                dmp1=1,
                dmq1=1,
                iqmp=None,
                public_numbers=public_numbers
            )

        with pytest.raises(TypeError):
            rsa.RSAPrivateNumbers(
                p=3,
                q=5,
                d=1,
                dmp1=1,
                dmq1=1,
                iqmp=2,
                public_numbers=None
            )

    def test_invalid_public_numbers_argument_values(self, backend):
        # Start with public_exponent=7, modulus=15. Then change one value at a
        # time to test the bounds.

        # Test a modulus < 3.

        with pytest.raises(ValueError):
            rsa.RSAPublicNumbers(e=7, n=2).public_key(backend)

        # Test a public_exponent < 3
        with pytest.raises(ValueError):
            rsa.RSAPublicNumbers(e=1, n=15).public_key(backend)

        # Test a public_exponent > modulus
        with pytest.raises(ValueError):
            rsa.RSAPublicNumbers(e=17, n=15).public_key(backend)

        # Test a public_exponent that is not odd.
        with pytest.raises(ValueError):
            rsa.RSAPublicNumbers(e=14, n=15).public_key(backend)

    def test_invalid_private_numbers_argument_values(self, backend):
        # Start with p=3, q=11, private_exponent=3, public_exponent=7,
        # modulus=33, dmp1=1, dmq1=3, iqmp=2. Then change one value at
        # a time to test the bounds.

        # Test a modulus < 3.
        with pytest.raises(ValueError):
            rsa.RSAPrivateNumbers(
                p=3,
                q=11,
                d=3,
                dmp1=1,
                dmq1=3,
                iqmp=2,
                public_numbers=rsa.RSAPublicNumbers(
                    e=7,
                    n=2
                )
            ).private_key(backend)

        # Test a modulus != p * q.
        with pytest.raises(ValueError):
            rsa.RSAPrivateNumbers(
                p=3,
                q=11,
                d=3,
                dmp1=1,
                dmq1=3,
                iqmp=2,
                public_numbers=rsa.RSAPublicNumbers(
                    e=7,
                    n=35
                )
            ).private_key(backend)

        # Test a p > modulus.
        with pytest.raises(ValueError):
            rsa.RSAPrivateNumbers(
                p=37,
                q=11,
                d=3,
                dmp1=1,
                dmq1=3,
                iqmp=2,
                public_numbers=rsa.RSAPublicNumbers(
                    e=7,
                    n=33
                )
            ).private_key(backend)

        # Test a q > modulus.
        with pytest.raises(ValueError):
            rsa.RSAPrivateNumbers(
                p=3,
                q=37,
                d=3,
                dmp1=1,
                dmq1=3,
                iqmp=2,
                public_numbers=rsa.RSAPublicNumbers(
                    e=7,
                    n=33
                )
            ).private_key(backend)

        # Test a dmp1 > modulus.
        with pytest.raises(ValueError):
            rsa.RSAPrivateNumbers(
                p=3,
                q=11,
                d=3,
                dmp1=35,
                dmq1=3,
                iqmp=2,
                public_numbers=rsa.RSAPublicNumbers(
                    e=7,
                    n=33
                )
            ).private_key(backend)

        # Test a dmq1 > modulus.
        with pytest.raises(ValueError):
            rsa.RSAPrivateNumbers(
                p=3,
                q=11,
                d=3,
                dmp1=1,
                dmq1=35,
                iqmp=2,
                public_numbers=rsa.RSAPublicNumbers(
                    e=7,
                    n=33
                )
            ).private_key(backend)

        # Test an iqmp > modulus.
        with pytest.raises(ValueError):
            rsa.RSAPrivateNumbers(
                p=3,
                q=11,
                d=3,
                dmp1=1,
                dmq1=3,
                iqmp=35,
                public_numbers=rsa.RSAPublicNumbers(
                    e=7,
                    n=33
                )
            ).private_key(backend)

        # Test a private_exponent > modulus
        with pytest.raises(ValueError):
            rsa.RSAPrivateNumbers(
                p=3,
                q=11,
                d=37,
                dmp1=1,
                dmq1=3,
                iqmp=2,
                public_numbers=rsa.RSAPublicNumbers(
                    e=7,
                    n=33
                )
            ).private_key(backend)

        # Test a public_exponent < 3
        with pytest.raises(ValueError):
            rsa.RSAPrivateNumbers(
                p=3,
                q=11,
                d=3,
                dmp1=1,
                dmq1=3,
                iqmp=2,
                public_numbers=rsa.RSAPublicNumbers(
                    e=1,
                    n=33
                )
            ).private_key(backend)

        # Test a public_exponent > modulus
        with pytest.raises(ValueError):
            rsa.RSAPrivateNumbers(
                p=3,
                q=11,
                d=3,
                dmp1=1,
                dmq1=3,
                iqmp=35,
                public_numbers=rsa.RSAPublicNumbers(
                    e=65537,
                    n=33
                )
            ).private_key(backend)

        # Test a public_exponent that is not odd.
        with pytest.raises(ValueError):
            rsa.RSAPrivateNumbers(
                p=3,
                q=11,
                d=3,
                dmp1=1,
                dmq1=3,
                iqmp=2,
                public_numbers=rsa.RSAPublicNumbers(
                    e=6,
                    n=33
                )
            ).private_key(backend)

        # Test a dmp1 that is not odd.
        with pytest.raises(ValueError):
            rsa.RSAPrivateNumbers(
                p=3,
                q=11,
                d=3,
                dmp1=2,
                dmq1=3,
                iqmp=2,
                public_numbers=rsa.RSAPublicNumbers(
                    e=7,
                    n=33
                )
            ).private_key(backend)

        # Test a dmq1 that is not odd.
        with pytest.raises(ValueError):
            rsa.RSAPrivateNumbers(
                p=3,
                q=11,
                d=3,
                dmp1=1,
                dmq1=4,
                iqmp=2,
                public_numbers=rsa.RSAPublicNumbers(
                    e=7,
                    n=33
                )
            ).private_key(backend)

    def test_public_number_repr(self):
        num = RSAPublicNumbers(1, 1)
        assert repr(num) == "<RSAPublicNumbers(e=1, n=1)>"


class TestRSANumbersEquality(object):
    def test_public_numbers_eq(self):
        num = RSAPublicNumbers(1, 2)
        num2 = RSAPublicNumbers(1, 2)
        assert num == num2

    def test_public_numbers_ne(self):
        num = RSAPublicNumbers(1, 2)
        assert num != RSAPublicNumbers(2, 2)
        assert num != RSAPublicNumbers(1, 3)
        assert num != object()

    def test_private_numbers_eq(self):
        pub = RSAPublicNumbers(1, 2)
        num = RSAPrivateNumbers(1, 2, 3, 4, 5, 6, pub)
        pub2 = RSAPublicNumbers(1, 2)
        num2 = RSAPrivateNumbers(1, 2, 3, 4, 5, 6, pub2)
        assert num == num2

    def test_private_numbers_ne(self):
        pub = RSAPublicNumbers(1, 2)
        num = RSAPrivateNumbers(1, 2, 3, 4, 5, 6, pub)
        assert num != RSAPrivateNumbers(
            1, 2, 3, 4, 5, 7, RSAPublicNumbers(1, 2)
        )
        assert num != RSAPrivateNumbers(
            1, 2, 3, 4, 4, 6, RSAPublicNumbers(1, 2)
        )
        assert num != RSAPrivateNumbers(
            1, 2, 3, 5, 5, 6, RSAPublicNumbers(1, 2)
        )
        assert num != RSAPrivateNumbers(
            1, 2, 4, 4, 5, 6, RSAPublicNumbers(1, 2)
        )
        assert num != RSAPrivateNumbers(
            1, 3, 3, 4, 5, 6, RSAPublicNumbers(1, 2)
        )
        assert num != RSAPrivateNumbers(
            2, 2, 3, 4, 5, 6, RSAPublicNumbers(1, 2)
        )
        assert num != RSAPrivateNumbers(
            1, 2, 3, 4, 5, 6, RSAPublicNumbers(2, 2)
        )
        assert num != RSAPrivateNumbers(
            1, 2, 3, 4, 5, 6, RSAPublicNumbers(1, 3)
        )
        assert num != object()

    def test_public_numbers_hash(self):
        pub1 = RSAPublicNumbers(3, 17)
        pub2 = RSAPublicNumbers(3, 17)
        pub3 = RSAPublicNumbers(7, 21)

        assert hash(pub1) == hash(pub2)
        assert hash(pub1) != hash(pub3)

    def test_private_numbers_hash(self):
        priv1 = RSAPrivateNumbers(1, 2, 3, 4, 5, 6, RSAPublicNumbers(1, 2))
        priv2 = RSAPrivateNumbers(1, 2, 3, 4, 5, 6, RSAPublicNumbers(1, 2))
        priv3 = RSAPrivateNumbers(1, 2, 3, 4, 5, 6, RSAPublicNumbers(1, 3))

        assert hash(priv1) == hash(priv2)
        assert hash(priv1) != hash(priv3)


class TestRSAPrimeFactorRecovery(object):
    @pytest.mark.parametrize(
        "vector",
        _flatten_pkcs1_examples(load_vectors_from_file(
            os.path.join(
                "asymmetric", "RSA", "pkcs1v15crypt-vectors.txt"),
            load_pkcs1_vectors
        ))
    )
    def test_recover_prime_factors(self, vector):
        private, public, example = vector
        p, q = rsa.rsa_recover_prime_factors(
            private["modulus"],
            private["public_exponent"],
            private["private_exponent"]
        )
        # Unfortunately there is no convention on which prime should be p
        # and which one q. The function we use always makes p < q, but the
        # NIST vectors are not so consistent. Accordingly we verify we've
        # recovered the proper (p, q) by sorting them and asserting on that.
        assert sorted([p, q]) == sorted([private["p"], private["q"]])

    def test_invalid_recover_prime_factors(self):
        with pytest.raises(ValueError):
            rsa.rsa_recover_prime_factors(34, 3, 7)


@pytest.mark.requires_backend_interface(interface=RSABackend)
@pytest.mark.requires_backend_interface(interface=PEMSerializationBackend)
class TestRSAPrivateKeySerialization(object):
    @pytest.mark.parametrize(
        ("fmt", "password"),
        itertools.product(
            [
                serialization.PrivateFormat.TraditionalOpenSSL,
                serialization.PrivateFormat.PKCS8
            ],
            [
                b"s",
                b"longerpassword",
                b"!*$&(@#$*&($T@%_somesymbols",
                b"\x01" * 1000,
            ]
        )
    )
    def test_private_bytes_encrypted_pem(self, backend, fmt, password):
        key = RSA_KEY_2048.private_key(backend)
        serialized = key.private_bytes(
            serialization.Encoding.PEM,
            fmt,
            serialization.BestAvailableEncryption(password)
        )
        loaded_key = serialization.load_pem_private_key(
            serialized, password, backend
        )
        loaded_priv_num = loaded_key.private_numbers()
        priv_num = key.private_numbers()
        assert loaded_priv_num == priv_num

    @pytest.mark.parametrize(
        ("fmt", "password"),
        [
            [serialization.PrivateFormat.PKCS8, b"s"],
            [serialization.PrivateFormat.PKCS8, b"longerpassword"],
            [serialization.PrivateFormat.PKCS8, b"!*$&(@#$*&($T@%_somesymbol"],
            [serialization.PrivateFormat.PKCS8, b"\x01" * 1000]
        ]
    )
    def test_private_bytes_encrypted_der(self, backend, fmt, password):
        key = RSA_KEY_2048.private_key(backend)
        serialized = key.private_bytes(
            serialization.Encoding.DER,
            fmt,
            serialization.BestAvailableEncryption(password)
        )
        loaded_key = serialization.load_der_private_key(
            serialized, password, backend
        )
        loaded_priv_num = loaded_key.private_numbers()
        priv_num = key.private_numbers()
        assert loaded_priv_num == priv_num

    @pytest.mark.parametrize(
        ("encoding", "fmt", "loader_func"),
        [
            [
                serialization.Encoding.PEM,
                serialization.PrivateFormat.TraditionalOpenSSL,
                serialization.load_pem_private_key
            ],
            [
                serialization.Encoding.DER,
                serialization.PrivateFormat.TraditionalOpenSSL,
                serialization.load_der_private_key
            ],
            [
                serialization.Encoding.PEM,
                serialization.PrivateFormat.PKCS8,
                serialization.load_pem_private_key
            ],
            [
                serialization.Encoding.DER,
                serialization.PrivateFormat.PKCS8,
                serialization.load_der_private_key
            ],
        ]
    )
    def test_private_bytes_unencrypted(self, backend, encoding, fmt,
                                       loader_func):
        key = RSA_KEY_2048.private_key(backend)
        serialized = key.private_bytes(
            encoding, fmt, serialization.NoEncryption()
        )
        loaded_key = loader_func(serialized, None, backend)
        loaded_priv_num = loaded_key.private_numbers()
        priv_num = key.private_numbers()
        assert loaded_priv_num == priv_num

    @pytest.mark.parametrize(
        ("key_path", "encoding", "loader_func"),
        [
            [
                os.path.join(
                    "asymmetric",
                    "Traditional_OpenSSL_Serialization",
                    "testrsa.pem"
                ),
                serialization.Encoding.PEM,
                serialization.load_pem_private_key
            ],
            [
                os.path.join("asymmetric", "DER_Serialization", "testrsa.der"),
                serialization.Encoding.DER,
                serialization.load_der_private_key
            ],
        ]
    )
    def test_private_bytes_traditional_openssl_unencrypted(
        self, backend, key_path, encoding, loader_func
    ):
        key_bytes = load_vectors_from_file(
            key_path, lambda pemfile: pemfile.read(), mode="rb"
        )
        key = loader_func(key_bytes, None, backend)
        serialized = key.private_bytes(
            encoding,
            serialization.PrivateFormat.TraditionalOpenSSL,
            serialization.NoEncryption()
        )
        assert serialized == key_bytes

    def test_private_bytes_traditional_der_encrypted_invalid(self, backend):
        key = RSA_KEY_2048.private_key(backend)
        with pytest.raises(ValueError):
            key.private_bytes(
                serialization.Encoding.DER,
                serialization.PrivateFormat.TraditionalOpenSSL,
                serialization.BestAvailableEncryption(b"password")
            )

    def test_private_bytes_invalid_encoding(self, backend):
        key = RSA_KEY_2048.private_key(backend)
        with pytest.raises(TypeError):
            key.private_bytes(
                "notencoding",
                serialization.PrivateFormat.PKCS8,
                serialization.NoEncryption()
            )

    def test_private_bytes_invalid_format(self, backend):
        key = RSA_KEY_2048.private_key(backend)
        with pytest.raises(TypeError):
            key.private_bytes(
                serialization.Encoding.PEM,
                "invalidformat",
                serialization.NoEncryption()
            )

    def test_private_bytes_invalid_encryption_algorithm(self, backend):
        key = RSA_KEY_2048.private_key(backend)
        with pytest.raises(TypeError):
            key.private_bytes(
                serialization.Encoding.PEM,
                serialization.PrivateFormat.TraditionalOpenSSL,
                "notanencalg"
            )

    def test_private_bytes_unsupported_encryption_type(self, backend):
        key = RSA_KEY_2048.private_key(backend)
        with pytest.raises(ValueError):
            key.private_bytes(
                serialization.Encoding.PEM,
                serialization.PrivateFormat.TraditionalOpenSSL,
                DummyKeyEncryption()
            )


@pytest.mark.requires_backend_interface(interface=RSABackend)
@pytest.mark.requires_backend_interface(interface=PEMSerializationBackend)
class TestRSAPEMPublicKeySerialization(object):
    @pytest.mark.parametrize(
        ("key_path", "loader_func", "encoding", "format"),
        [
            (
                os.path.join("asymmetric", "public", "PKCS1", "rsa.pub.pem"),
                serialization.load_pem_public_key,
                serialization.Encoding.PEM,
                serialization.PublicFormat.PKCS1,
            ), (
                os.path.join("asymmetric", "public", "PKCS1", "rsa.pub.der"),
                serialization.load_der_public_key,
                serialization.Encoding.DER,
                serialization.PublicFormat.PKCS1,
            ), (
                os.path.join("asymmetric", "PKCS8", "unenc-rsa-pkcs8.pub.pem"),
                serialization.load_pem_public_key,
                serialization.Encoding.PEM,
                serialization.PublicFormat.SubjectPublicKeyInfo,
            ), (
                os.path.join(
                    "asymmetric",
                    "DER_Serialization",
                    "unenc-rsa-pkcs8.pub.der"
                ),
                serialization.load_der_public_key,
                serialization.Encoding.DER,
                serialization.PublicFormat.SubjectPublicKeyInfo,
            )
        ]
    )
    def test_public_bytes_match(self, key_path, loader_func, encoding, format,
                                backend):
        key_bytes = load_vectors_from_file(
            key_path, lambda pemfile: pemfile.read(), mode="rb"
        )
        key = loader_func(key_bytes, backend)
        serialized = key.public_bytes(encoding, format)
        assert serialized == key_bytes

    def test_public_bytes_invalid_encoding(self, backend):
        key = RSA_KEY_2048.private_key(backend).public_key()
        with pytest.raises(TypeError):
            key.public_bytes("notencoding", serialization.PublicFormat.PKCS1)

    def test_public_bytes_invalid_format(self, backend):
        key = RSA_KEY_2048.private_key(backend).public_key()
        with pytest.raises(TypeError):
            key.public_bytes(serialization.Encoding.PEM, "invalidformat")
generated by cgit v1.2.3 (git 2.25.1) at 2025-08-15 22:09:06 +0000