diff options
Diffstat (limited to 'target/linux/ifxmips/files/drivers/crypto/ifxmips/ifxmips_md5.c')
-rwxr-xr-x | target/linux/ifxmips/files/drivers/crypto/ifxmips/ifxmips_md5.c | 264 |
1 files changed, 0 insertions, 264 deletions
diff --git a/target/linux/ifxmips/files/drivers/crypto/ifxmips/ifxmips_md5.c b/target/linux/ifxmips/files/drivers/crypto/ifxmips/ifxmips_md5.c deleted file mode 100755 index cd484ab0df..0000000000 --- a/target/linux/ifxmips/files/drivers/crypto/ifxmips/ifxmips_md5.c +++ /dev/null @@ -1,264 +0,0 @@ -/* - * This program 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. - * - * This program 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 this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. - * - * Copyright (C) 2010 Ralph Hempel <ralph.hempel@lantiq.com> - * Copyright (C) 2009 Mohammad Firdaus - */ - -/*! - \defgroup IFX_DEU IFX_DEU_DRIVERS - \ingroup API - \brief ifx deu driver module -*/ - -/*! - \file ifxmips_md5.c - \ingroup IFX_DEU - \brief MD5 encryption deu driver file -*/ - -/*! - \defgroup IFX_MD5_FUNCTIONS IFX_MD5_FUNCTIONS - \ingroup IFX_DEU - \brief ifx deu MD5 functions -*/ - -/*Project header files */ -#include <linux/init.h> -#include <linux/module.h> -#include <linux/string.h> -#include <linux/crypto.h> -#include <linux/types.h> -#include <asm/byteorder.h> -#include "ifxmips_deu.h" - -#define MD5_DIGEST_SIZE 16 -#define MD5_HMAC_BLOCK_SIZE 64 -#define MD5_BLOCK_WORDS 16 -#define MD5_HASH_WORDS 4 -#define HASH_START IFX_HASH_CON - -static spinlock_t lock; -#define CRTCL_SECT_INIT spin_lock_init(&lock) -#define CRTCL_SECT_START spin_lock_irqsave(&lock, flag) -#define CRTCL_SECT_END spin_unlock_irqrestore(&lock, flag) - -struct md5_ctx { - u32 hash[MD5_HASH_WORDS]; - u32 block[MD5_BLOCK_WORDS]; - u64 byte_count; -}; - -extern int disable_deudma; - -/*! \fn static u32 endian_swap(u32 input) - * \ingroup IFX_MD5_FUNCTIONS - * \brief perform dword level endian swap - * \param input value of dword that requires to be swapped -*/ -static u32 endian_swap(u32 input) -{ - u8 *ptr = (u8 *)&input; - - return ((ptr[3] << 24) | (ptr[2] << 16) | (ptr[1] << 8) | ptr[0]); -} - -/*! \fn static void md5_transform(u32 *hash, u32 const *in) - * \ingroup IFX_MD5_FUNCTIONS - * \brief main interface to md5 hardware - * \param hash current hash value - * \param in 64-byte block of input -*/ -static void md5_transform(u32 *hash, u32 const *in) -{ - int i; - volatile struct deu_hash_t *hashs = (struct deu_hash_t *) HASH_START; - ulong flag; - - CRTCL_SECT_START; - - for (i = 0; i < 16; i++) { - hashs->MR = endian_swap(in[i]); - }; - - //wait for processing - while (hashs->controlr.BSY) { - // this will not take long - } - - CRTCL_SECT_END; -} - -/*! \fn static inline void md5_transform_helper(struct md5_ctx *ctx) - * \ingroup IFX_MD5_FUNCTIONS - * \brief interfacing function for md5_transform() - * \param ctx crypto context -*/ -static inline void md5_transform_helper(struct md5_ctx *ctx) -{ - //le32_to_cpu_array(ctx->block, sizeof(ctx->block) / sizeof(u32)); - md5_transform(ctx->hash, ctx->block); -} - -/*! \fn static void md5_init(struct crypto_tfm *tfm) - * \ingroup IFX_MD5_FUNCTIONS - * \brief initialize md5 hardware - * \param tfm linux crypto algo transform -*/ -static void md5_init(struct crypto_tfm *tfm) -{ - struct md5_ctx *mctx = crypto_tfm_ctx(tfm); - volatile struct deu_hash_t *hash = (struct deu_hash_t *) HASH_START; - - hash->controlr.SM = 1; - hash->controlr.ALGO = 1; // 1 = md5 0 = sha1 - hash->controlr.INIT = 1; // Initialize the hash operation by writing a '1' to the INIT bit. - - mctx->byte_count = 0; -} - -/*! \fn static void md5_update(struct crypto_tfm *tfm, const u8 *data, unsigned int len) - * \ingroup IFX_MD5_FUNCTIONS - * \brief on-the-fly md5 computation - * \param tfm linux crypto algo transform - * \param data input data - * \param len size of input data -*/ -static void md5_update(struct crypto_tfm *tfm, const u8 *data, unsigned int len) -{ - struct md5_ctx *mctx = crypto_tfm_ctx(tfm); - const u32 avail = sizeof(mctx->block) - (mctx->byte_count & 0x3f); - - mctx->byte_count += len; - - if (avail > len) { - memcpy((char *)mctx->block + (sizeof(mctx->block) - avail), - data, len); - return; - } - - memcpy((char *)mctx->block + (sizeof(mctx->block) - avail), - data, avail); - - md5_transform_helper(mctx); - data += avail; - len -= avail; - - while (len >= sizeof(mctx->block)) { - memcpy(mctx->block, data, sizeof(mctx->block)); - md5_transform_helper(mctx); - data += sizeof(mctx->block); - len -= sizeof(mctx->block); - } - - memcpy(mctx->block, data, len); -} - -/*! \fn static void md5_final(struct crypto_tfm *tfm, u8 *out) - * \ingroup IFX_MD5_FUNCTIONS - * \brief compute final md5 value - * \param tfm linux crypto algo transform - * \param out final md5 output value -*/ -static void md5_final(struct crypto_tfm *tfm, u8 *out) -{ - struct md5_ctx *mctx = crypto_tfm_ctx(tfm); - const unsigned int offset = mctx->byte_count & 0x3f; - char *p = (char *)mctx->block + offset; - int padding = 56 - (offset + 1); - volatile struct deu_hash_t *hashs = (struct deu_hash_t *) HASH_START; - u32 flag; - - *p++ = 0x80; - if (padding < 0) { - memset(p, 0x00, padding + sizeof (u64)); - md5_transform_helper(mctx); - p = (char *)mctx->block; - padding = 56; - } - - memset(p, 0, padding); - mctx->block[14] = endian_swap(mctx->byte_count << 3); - mctx->block[15] = endian_swap(mctx->byte_count >> 29); - -#if 0 - le32_to_cpu_array(mctx->block, (sizeof(mctx->block) - - sizeof(u64)) / sizeof(u32)); -#endif - - md5_transform(mctx->hash, mctx->block); - - CRTCL_SECT_START; - - *((u32 *) out + 0) = endian_swap (hashs->D1R); - *((u32 *) out + 1) = endian_swap (hashs->D2R); - *((u32 *) out + 2) = endian_swap (hashs->D3R); - *((u32 *) out + 3) = endian_swap (hashs->D4R); - - CRTCL_SECT_END; - - // Wipe context - memset(mctx, 0, sizeof(*mctx)); -} - -/* - * \brief MD5 function mappings -*/ -static struct crypto_alg ifxdeu_md5_alg = { - .cra_name = "md5", - .cra_driver_name = "ifxdeu-md5", - .cra_flags = CRYPTO_ALG_TYPE_DIGEST, - .cra_blocksize = MD5_HMAC_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct md5_ctx), - .cra_module = THIS_MODULE, - .cra_list = LIST_HEAD_INIT(ifxdeu_md5_alg.cra_list), - .cra_u = { .digest = { - .dia_digestsize = MD5_DIGEST_SIZE, - .dia_init = md5_init, - .dia_update = md5_update, - .dia_final = md5_final } } -}; - -/*! \fn int __init ifxdeu_init_md5 (void) - * \ingroup IFX_MD5_FUNCTIONS - * \brief initialize md5 driver -*/ -int __init ifxdeu_init_md5 (void) -{ - int ret; - - if ((ret = crypto_register_alg(&ifxdeu_md5_alg))) - goto md5_err; - - CRTCL_SECT_INIT; - - printk (KERN_NOTICE "IFX DEU MD5 initialized%s.\n", disable_deudma ? "" : " (DMA)"); - return ret; - -md5_err: - printk(KERN_ERR "IFX DEU MD5 initialization failed!\n"); - return ret; -} - -/*! \fn void __exit ifxdeu_fini_md5 (void) - * \ingroup IFX_MD5_FUNCTIONS - * \brief unregister md5 driver -*/ - -void __exit ifxdeu_fini_md5 (void) -{ - crypto_unregister_alg (&ifxdeu_md5_alg); -} - |