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Diffstat (limited to 'package/platform/lantiq/ltq-deu/src/ifxmips_md5_hmac.c')
| -rw-r--r-- | package/platform/lantiq/ltq-deu/src/ifxmips_md5_hmac.c | 386 |
1 files changed, 0 insertions, 386 deletions
diff --git a/package/platform/lantiq/ltq-deu/src/ifxmips_md5_hmac.c b/package/platform/lantiq/ltq-deu/src/ifxmips_md5_hmac.c deleted file mode 100644 index fc6f52ea7d..0000000000 --- a/package/platform/lantiq/ltq-deu/src/ifxmips_md5_hmac.c +++ /dev/null @@ -1,386 +0,0 @@ -/****************************************************************************** -** -** FILE NAME : ifxmips_md5_hmac.c -** PROJECT : IFX UEIP -** MODULES : DEU Module for UEIP -** -** DATE : September 8, 2009 -** AUTHOR : Mohammad Firdaus -** DESCRIPTION : Data Encryption Unit Driver -** COPYRIGHT : Copyright (c) 2009 -** Infineon Technologies AG -** Am Campeon 1-12, 85579 Neubiberg, Germany -** -** 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. -** -** HISTORY -** $Date $Author $Comment -** 08,Sept 2009 Mohammad Firdaus Initial UEIP release -** 21,March 2011 Mohammad Firdaus Changes for Kernel 2.6.32 and IPSec integration -*******************************************************************************/ -/*! - \defgroup IFX_DEU IFX_DEU_DRIVERS - \ingroup API - \brief ifx deu driver module -*/ - -/*! - \file ifxmips_md5_hmac.c - \ingroup IFX_DEU - \brief MD5-HMAC encryption deu driver file -*/ - -/*! - \defgroup IFX_MD5_HMAC_FUNCTIONS IFX_MD5_HMAC_FUNCTIONS - \ingroup IFX_DEU - \brief ifx md5-hmac driver 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 <crypto/internal/hash.h> -#include <asm/byteorder.h> - -#if defined(CONFIG_AR9) -#include "ifxmips_deu_ar9.h" -#elif defined(CONFIG_VR9) || defined(CONFIG_AR10) -#include "ifxmips_deu_vr9.h" -#else -#error "Plaform Unknwon!" -#endif - -#define MD5_DIGEST_SIZE 16 -#define MD5_HMAC_BLOCK_SIZE 64 -#define MD5_BLOCK_WORDS 16 -#define MD5_HASH_WORDS 4 -#define MD5_HMAC_DBN_TEMP_SIZE 1024 // size in dword, needed for dbn workaround -#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) - -//#define CRYPTO_DEBUG -#ifdef CRYPTO_DEBUG -extern char debug_level; -#define DPRINTF(level, format, args...) if (level < debug_level) printk(KERN_INFO "[%s %s %d]: " format, __FILE__, __func__, __LINE__, ##args); -#else -#define DPRINTF(level, format, args...) -#endif - -#define MAX_HASH_KEYLEN 64 - -struct md5_hmac_ctx { - u8 key[MAX_HASH_KEYLEN]; - u32 hash[MD5_HASH_WORDS]; - u32 block[MD5_BLOCK_WORDS]; - u64 byte_count; - u32 dbn; - unsigned int keylen; -}; - -static u32 temp[MD5_HMAC_DBN_TEMP_SIZE]; - -extern int disable_deudma; - -/*! \fn static u32 endian_swap(u32 input) - * \ingroup IFX_MD5_HMAC_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_hmac_transform(struct crypto_tfm *tfm, u32 const *in) - * \ingroup IFX_MD5_HMAC_FUNCTIONS - * \brief save input block to context - * \param tfm linux crypto algo transform - * \param in 64-byte block of input -*/ -static void md5_hmac_transform(struct shash_desc *desc, u32 const *in) -{ - struct md5_hmac_ctx *mctx = crypto_shash_ctx(desc->tfm); - - memcpy(&temp[mctx->dbn<<4], in, 64); //dbn workaround - mctx->dbn += 1; - - if ( (mctx->dbn<<4) > MD5_HMAC_DBN_TEMP_SIZE ) - { - printk("MD5_HMAC_DBN_TEMP_SIZE exceeded\n"); - } - -} - -/*! \fn int md5_hmac_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen) - * \ingroup IFX_MD5_HMAC_FUNCTIONS - * \brief sets md5 hmac key - * \param tfm linux crypto algo transform - * \param key input key - * \param keylen key length greater than 64 bytes IS NOT SUPPORTED -*/ -static int md5_hmac_setkey(struct crypto_shash *tfm, const u8 *key, unsigned int keylen) -{ - struct md5_hmac_ctx *mctx = crypto_shash_ctx(tfm); - volatile struct deu_hash_t *hash = (struct deu_hash_t *) HASH_START; - //printk("copying keys to context with length %d\n", keylen); - - if (keylen > MAX_HASH_KEYLEN) { - printk("Key length more than what DEU hash can handle\n"); - return -EINVAL; - } - - - hash->KIDX |= 0x80000000; // reset all 16 words of the key to '0' - memcpy(&mctx->key, key, keylen); - mctx->keylen = keylen; - - return 0; - -} - - -/*! \fn int md5_hmac_setkey_hw(const u8 *key, unsigned int keylen) - * \ingroup IFX_MD5_HMAC_FUNCTIONS - * \brief sets md5 hmac key into the hardware registers - * \param key input key - * \param keylen key length greater than 64 bytes IS NOT SUPPORTED -*/ - -static int md5_hmac_setkey_hw(const u8 *key, unsigned int keylen) -{ - volatile struct deu_hash_t *hash = (struct deu_hash_t *) HASH_START; - unsigned long flag; - int i, j; - u32 *in_key = (u32 *)key; - - //printk("\nsetkey keylen: %d\n key: ", keylen); - - CRTCL_SECT_START; - j = 0; - for (i = 0; i < keylen; i+=4) - { - hash->KIDX = j; - asm("sync"); - hash->KEY = *((u32 *) in_key + j); - asm("sync"); - j++; - } - CRTCL_SECT_END; - - return 0; -} - -/*! \fn void md5_hmac_init(struct crypto_tfm *tfm) - * \ingroup IFX_MD5_HMAC_FUNCTIONS - * \brief initialize md5 hmac context - * \param tfm linux crypto algo transform -*/ -static int md5_hmac_init(struct shash_desc *desc) -{ - - struct md5_hmac_ctx *mctx = crypto_shash_ctx(desc->tfm); - - - mctx->dbn = 0; //dbn workaround - md5_hmac_setkey_hw(mctx->key, mctx->keylen); - - return 0; -} -EXPORT_SYMBOL(md5_hmac_init); - -/*! \fn void md5_hmac_update(struct crypto_tfm *tfm, const u8 *data, unsigned int len) - * \ingroup IFX_MD5_HMAC_FUNCTIONS - * \brief on-the-fly md5 hmac computation - * \param tfm linux crypto algo transform - * \param data input data - * \param len size of input data -*/ -static int md5_hmac_update(struct shash_desc *desc, const u8 *data, unsigned int len) -{ - struct md5_hmac_ctx *mctx = crypto_shash_ctx(desc->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 0; - } - - memcpy((char *)mctx->block + (sizeof(mctx->block) - avail), - data, avail); - - md5_hmac_transform(desc, mctx->block); - data += avail; - len -= avail; - - while (len >= sizeof(mctx->block)) { - memcpy(mctx->block, data, sizeof(mctx->block)); - md5_hmac_transform(desc, mctx->block); - data += sizeof(mctx->block); - len -= sizeof(mctx->block); - } - - memcpy(mctx->block, data, len); - return 0; -} -EXPORT_SYMBOL(md5_hmac_update); - -/*! \fn void md5_hmac_final(struct crypto_tfm *tfm, u8 *out) - * \ingroup IFX_MD5_HMAC_FUNCTIONS - * \brief compute final md5 hmac value - * \param tfm linux crypto algo transform - * \param out final md5 hmac output value -*/ -static int md5_hmac_final(struct shash_desc *desc, u8 *out) -{ - struct md5_hmac_ctx *mctx = crypto_shash_ctx(desc->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; - unsigned long flag; - int i = 0; - int dbn; - u32 *in = &temp[0]; - - - *p++ = 0x80; - if (padding < 0) { - memset(p, 0x00, padding + sizeof (u64)); - md5_hmac_transform(desc, mctx->block); - p = (char *)mctx->block; - padding = 56; - } - - memset(p, 0, padding); - mctx->block[14] = endian_swap((mctx->byte_count + 64) << 3); // need to add 512 bit of the IPAD operation - mctx->block[15] = 0x00000000; - - md5_hmac_transform(desc, mctx->block); - - CRTCL_SECT_START; - - //printk("\ndbn = %d\n", mctx->dbn); - hashs->DBN = mctx->dbn; - asm("sync"); - - *IFX_HASH_CON = 0x0703002D; //khs, go, init, ndc, endi, kyue, hmen, md5 - - //wait for processing - while (hashs->controlr.BSY) { - // this will not take long - } - - for (dbn = 0; dbn < mctx->dbn; dbn++) - { - for (i = 0; i < 16; i++) { - hashs->MR = in[i]; - }; - - hashs->controlr.GO = 1; - asm("sync"); - - //wait for processing - while (hashs->controlr.BSY) { - // this will not take long - } - - in += 16; -} - - -#if 1 - //wait for digest ready - while (! hashs->controlr.DGRY) { - // this will not take long - } -#endif - - *((u32 *) out + 0) = hashs->D1R; - *((u32 *) out + 1) = hashs->D2R; - *((u32 *) out + 2) = hashs->D3R; - *((u32 *) out + 3) = hashs->D4R; - *((u32 *) out + 4) = hashs->D5R; - - /* reset the context after we finish with the hash */ - mctx->byte_count = 0; - memset(&mctx->hash[0], 0, sizeof(MD5_HASH_WORDS)); - memset(&mctx->block[0], 0, sizeof(MD5_BLOCK_WORDS)); - memset(&temp[0], 0, MD5_HMAC_DBN_TEMP_SIZE); - - CRTCL_SECT_END; - - - return 0; -} - -EXPORT_SYMBOL(md5_hmac_final); - -/* - * \brief MD5_HMAC function mappings -*/ - -static struct shash_alg ifxdeu_md5_hmac_alg = { - .digestsize = MD5_DIGEST_SIZE, - .init = md5_hmac_init, - .update = md5_hmac_update, - .final = md5_hmac_final, - .setkey = md5_hmac_setkey, - .descsize = sizeof(struct md5_hmac_ctx), - .base = { - .cra_name = "hmac(md5)", - .cra_driver_name= "ifxdeu-md5_hmac", - .cra_ctxsize = sizeof(struct md5_hmac_ctx), - .cra_flags = CRYPTO_ALG_TYPE_DIGEST, - .cra_blocksize = MD5_HMAC_BLOCK_SIZE, - .cra_module = THIS_MODULE, - } -}; - -/*! \fn int __init ifxdeu_init_md5_hmac (void) - * \ingroup IFX_MD5_HMAC_FUNCTIONS - * \brief initialize md5 hmac driver -*/ -int __init ifxdeu_init_md5_hmac (void) -{ - - int ret = -ENOSYS; - - - if ((ret = crypto_register_shash(&ifxdeu_md5_hmac_alg))) - goto md5_hmac_err; - - CRTCL_SECT_INIT; - - printk (KERN_NOTICE "IFX DEU MD5_HMAC initialized%s.\n", disable_deudma ? "" : " (DMA)"); - return ret; - -md5_hmac_err: - printk(KERN_ERR "IFX DEU MD5_HMAC initialization failed!\n"); - return ret; -} - -/** \fn void __exit ifxdeu_fini_md5_hmac (void) - * \ingroup IFX_MD5_HMAC_FUNCTIONS - * \brief unregister md5 hmac driver -*/ -void __exit ifxdeu_fini_md5_hmac (void) -{ - crypto_unregister_shash(&ifxdeu_md5_hmac_alg); -} - - |