diff options
Diffstat (limited to 'target/linux/ubicom32/files/arch/ubicom32/crypto/md5_ubicom32.c')
| -rw-r--r-- | target/linux/ubicom32/files/arch/ubicom32/crypto/md5_ubicom32.c | 200 |
1 files changed, 0 insertions, 200 deletions
diff --git a/target/linux/ubicom32/files/arch/ubicom32/crypto/md5_ubicom32.c b/target/linux/ubicom32/files/arch/ubicom32/crypto/md5_ubicom32.c deleted file mode 100644 index 1f2b978ead..0000000000 --- a/target/linux/ubicom32/files/arch/ubicom32/crypto/md5_ubicom32.c +++ /dev/null @@ -1,200 +0,0 @@ -/* - * arch/ubicom32/crypto/md5_ubicom32.c - * Ubicom32 implementation of the MD5 Secure Hash Algorithm - * - * (C) Copyright 2009, Ubicom, Inc. - * - * This file is part of the Ubicom32 Linux Kernel Port. - * - * The Ubicom32 Linux Kernel Port is free software: you can redistribute - * it and/or modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation, either version 2 of the - * License, or (at your option) any later version. - * - * The Ubicom32 Linux Kernel Port 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 General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with the Ubicom32 Linux Kernel Port. If not, - * see <http://www.gnu.org/licenses/>. - * - * Ubicom32 implementation derived from (with many thanks): - * arch/m68knommu - * arch/blackfin - * arch/parisc - */ -#include <linux/init.h> -#include <linux/module.h> -#include <linux/crypto.h> - -#include "crypto_ubicom32.h" - -#define MD5_DIGEST_SIZE 16 -#define MD5_BLOCK_SIZE 64 -#define MD5_HASH_WORDS 4 - -extern void _md5_ip5k_init_digest(u32_t *digest); -extern void _md5_ip5k_transform(u32_t *data_input); -extern void _md5_ip5k_get_digest(u32_t *digest); - -struct ubicom32_md5_ctx { - u64 count; /* message length */ - u32 state[MD5_HASH_WORDS]; - u8 buf[2 * MD5_BLOCK_SIZE]; -}; - -static void md5_init(struct crypto_tfm *tfm) -{ - struct ubicom32_md5_ctx *mctx = crypto_tfm_ctx(tfm); - mctx->state[0] = 0x01234567; - mctx->state[1] = 0x89abcdef; - mctx->state[2] = 0xfedcba98; - mctx->state[3] = 0x76543210; - - mctx->count = 0; -} - -static inline void _md5_process(u32 *digest, const u8 *data) -{ - _md5_ip5k_transform((u32 *)data); -} - -static void md5_update(struct crypto_tfm *tfm, const u8 *data, - unsigned int len) -{ - struct ubicom32_md5_ctx *mctx = crypto_tfm_ctx(tfm); - int index, clen; - - /* how much is already in the buffer? */ - index = mctx->count & 0x3f; - - mctx->count += len; - - if (index + len < MD5_BLOCK_SIZE) { - goto store_only; - } - - hw_crypto_lock(); - hw_crypto_check(); - - /* init digest set ctrl register too */ - _md5_ip5k_init_digest(mctx->state); - - if (unlikely(index == 0 && SEC_ALIGNED(data))) { -fast_process: - while (len >= MD5_BLOCK_SIZE) { - _md5_process(mctx->state, data); - data += MD5_BLOCK_SIZE; - len -= MD5_BLOCK_SIZE; - } - goto store; - } - - /* process one stored block */ - if (index) { - clen = MD5_BLOCK_SIZE - index; - memcpy(mctx->buf + index, data, clen); - _md5_process(mctx->state, mctx->buf); - data += clen; - len -= clen; - index = 0; - } - - if (likely(SEC_ALIGNED(data))) { - goto fast_process; - } - - /* process as many blocks as possible */ - while (len >= MD5_BLOCK_SIZE) { - memcpy(mctx->buf, data, MD5_BLOCK_SIZE); - _md5_process(mctx->state, mctx->buf); - data += MD5_BLOCK_SIZE; - len -= MD5_BLOCK_SIZE; - } - -store: - _md5_ip5k_get_digest(mctx->state); - hw_crypto_unlock(); - -store_only: - /* anything left? */ - if (len) - memcpy(mctx->buf + index , data, len); -} - -/* Add padding and return the message digest. */ -static void md5_final(struct crypto_tfm *tfm, u8 *out) -{ - struct ubicom32_md5_ctx *mctx = crypto_tfm_ctx(tfm); - u32 bits[2]; - unsigned int index, end; - - /* must perform manual padding */ - index = mctx->count & 0x3f; - end = (index < 56) ? MD5_BLOCK_SIZE : (2 * MD5_BLOCK_SIZE); - - /* start pad with 1 */ - mctx->buf[index] = 0x80; - - /* pad with zeros */ - index++; - memset(mctx->buf + index, 0x00, end - index - 8); - - /* append message length */ - bits[0] = mctx->count << 3; - bits[1] = mctx->count >> 29; - __cpu_to_le32s(bits); - __cpu_to_le32s(bits + 1); - - memcpy(mctx->buf + end - 8, &bits, sizeof(bits)); - - /* force to use the mctx->buf and ignore the partial buf */ - mctx->count = mctx->count & ~0x3f; - md5_update(tfm, mctx->buf, end); - - /* copy digest to out */ - memcpy(out, mctx->state, MD5_DIGEST_SIZE); - - /* wipe context */ - memset(mctx, 0, sizeof *mctx); -} - -static struct crypto_alg alg = { - .cra_name = "md5", - .cra_driver_name= "md5-ubicom32", - .cra_priority = CRYPTO_UBICOM32_PRIORITY, - .cra_flags = CRYPTO_ALG_TYPE_DIGEST, - .cra_blocksize = MD5_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct ubicom32_md5_ctx), - .cra_module = THIS_MODULE, - .cra_list = LIST_HEAD_INIT(alg.cra_list), - .cra_u = { - .digest = { - .dia_digestsize = MD5_DIGEST_SIZE, - .dia_init = md5_init, - .dia_update = md5_update, - .dia_final = md5_final, - } - } -}; - -static int __init init(void) -{ - hw_crypto_init(); - return crypto_register_alg(&alg); -} - -static void __exit fini(void) -{ - crypto_unregister_alg(&alg); -} - -module_init(init); -module_exit(fini); - -MODULE_ALIAS("md5"); - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("MD5 Secure Hash Algorithm"); |