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/* algorithms.c - the algorithms supported by the rhash library
*
* Copyright (c) 2011, Aleksey Kravchenko <rhash.admin@gmail.com>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#include <stdio.h>
#include <assert.h>
#include "byte_order.h"
#include "rhash.h"
#include "algorithms.h"
/* header files of all supported hash sums */
#if 0
#include "aich.h"
#include "crc32.h"
#include "ed2k.h"
#include "edonr.h"
#include "gost12.h"
#include "gost94.h"
#include "has160.h"
#include "md4.h"
#endif
#include "md5.h"
#if 0
#include "ripemd-160.h"
#include "snefru.h"
#endif
#include "sha1.h"
#include "sha256.h"
#include "sha512.h"
#include "sha3.h"
#if 0
#include "tiger.h"
#include "tth.h"
#include "whirlpool.h"
#endif
#ifdef USE_OPENSSL
/* note: BTIH and AICH depends on the used SHA1 algorithm */
# define NEED_OPENSSL_INIT (RHASH_MD4 | RHASH_MD5 | \
RHASH_SHA1 | RHASH_SHA224 | RHASH_SHA256 | RHASH_SHA384 | RHASH_SHA512 | \
RHASH_BTIH | RHASH_AICH | RHASH_RIPEMD160 | RHASH_WHIRLPOOL)
#else
# define NEED_OPENSSL_INIT 0
#endif /* USE_OPENSSL */
#ifdef GENERATE_GOST94_LOOKUP_TABLE
# define NEED_GOST94_INIT (RHASH_GOST94 | RHASH_GOST94_CRYPTOPRO)
#else
# define NEED_GOST94_INIT 0
#endif /* GENERATE_GOST94_LOOKUP_TABLE */
#define RHASH_NEED_INIT_ALG (NEED_GOST94_INIT | NEED_OPENSSL_INIT)
unsigned rhash_uninitialized_algorithms = RHASH_NEED_INIT_ALG;
rhash_hash_info* rhash_info_table = rhash_hash_info_default;
int rhash_info_size = RHASH_HASH_COUNT;
#if 0
static void rhash_crc32_init(uint32_t* crc32);
static void rhash_crc32_update(uint32_t* crc32, const unsigned char* msg, size_t size);
static void rhash_crc32_final(uint32_t* crc32, unsigned char* result);
static void rhash_crc32c_init(uint32_t* crc32);
static void rhash_crc32c_update(uint32_t* crc32, const unsigned char* msg, size_t size);
static void rhash_crc32c_final(uint32_t* crc32, unsigned char* result);
#endif
#if 0
rhash_info info_crc32 = { RHASH_CRC32, F_BE32, 4, "CRC32", "crc32" };
rhash_info info_crc32c = { RHASH_CRC32C, F_BE32, 4, "CRC32C", "crc32c" };
rhash_info info_md4 = { RHASH_MD4, F_LE32, 16, "MD4", "md4" };
#endif
rhash_info info_md5 = { RHASH_MD5, F_LE32, 16, "MD5", "md5" };
rhash_info info_sha1 = { RHASH_SHA1, F_BE32, 20, "SHA1", "sha1" };
#if 0
rhash_info info_tiger = { RHASH_TIGER, F_LE64, 24, "TIGER", "tiger" };
rhash_info info_tth = { RHASH_TTH, F_BS32, 24, "TTH", "tree:tiger" };
rhash_info info_btih = { RHASH_BTIH, 0, 20, "BTIH", "btih" };
rhash_info info_ed2k = { RHASH_ED2K, F_LE32, 16, "ED2K", "ed2k" };
rhash_info info_aich = { RHASH_AICH, F_BS32, 20, "AICH", "aich" };
rhash_info info_whirlpool = { RHASH_WHIRLPOOL, F_BE64, 64, "WHIRLPOOL", "whirlpool" };
rhash_info info_rmd160 = { RHASH_RIPEMD160, F_LE32, 20, "RIPEMD-160", "ripemd160" };
rhash_info info_gost12_256 = { RHASH_GOST12_256, F_LE64, 32, "GOST12-256", "gost12-256" };
rhash_info info_gost12_512 = { RHASH_GOST12_512, F_LE64, 64, "GOST12-512", "gost12-512" };
rhash_info info_gost94 = { RHASH_GOST94, F_LE32, 32, "GOST94", "gost94" };
rhash_info info_gost94pro = { RHASH_GOST94_CRYPTOPRO, F_LE32, 32, "GOST94-CRYPTOPRO", "gost94-cryptopro" };
rhash_info info_has160 = { RHASH_HAS160, F_LE32, 20, "HAS-160", "has160" };
rhash_info info_snf128 = { RHASH_SNEFRU128, F_BE32, 16, "SNEFRU-128", "snefru128" };
rhash_info info_snf256 = { RHASH_SNEFRU256, F_BE32, 32, "SNEFRU-256", "snefru256" };
#endif
rhash_info info_sha224 = { RHASH_SHA224, F_BE32, 28, "SHA-224", "sha224" };
rhash_info info_sha256 = { RHASH_SHA256, F_BE32, 32, "SHA-256", "sha256" };
rhash_info info_sha384 = { RHASH_SHA384, F_BE64, 48, "SHA-384", "sha384" };
rhash_info info_sha512 = { RHASH_SHA512, F_BE64, 64, "SHA-512", "sha512" };
#if 0
rhash_info info_edr256 = { RHASH_EDONR256, F_LE32, 32, "EDON-R256", "edon-r256" };
rhash_info info_edr512 = { RHASH_EDONR512, F_LE64, 64, "EDON-R512", "edon-r512" };
#endif
rhash_info info_sha3_224 = { RHASH_SHA3_224, F_LE64, 28, "SHA3-224", "sha3-224" };
rhash_info info_sha3_256 = { RHASH_SHA3_256, F_LE64, 32, "SHA3-256", "sha3-256" };
rhash_info info_sha3_384 = { RHASH_SHA3_384, F_LE64, 48, "SHA3-384", "sha3-384" };
rhash_info info_sha3_512 = { RHASH_SHA3_512, F_LE64, 64, "SHA3-512", "sha3-512" };
/* some helper macros */
#define dgshft(name) (((char*)&((name##_ctx*)0)->hash) - (char*)0)
#define dgshft2(name, field) (((char*)&((name##_ctx*)0)->field) - (char*)0)
#define ini(name) ((pinit_t)(name##_init))
#define upd(name) ((pupdate_t)(name##_update))
#define fin(name) ((pfinal_t)(name##_final))
#define iuf(name) ini(name), upd(name), fin(name)
#define iuf2(name1, name2) ini(name1), upd(name2), fin(name2)
#define diuf(name) dgshft(name), ini(name), upd(name), fin(name)
/* information about all supported hash functions */
rhash_hash_info rhash_hash_info_default[RHASH_HASH_COUNT] =
{
#if 0
{ &info_crc32, sizeof(uint32_t), 0, iuf(rhash_crc32), 0 }, /* 32 bit */
{ &info_md4, sizeof(md4_ctx), dgshft(md4), iuf(rhash_md4), 0 }, /* 128 bit */
#endif
{ &info_md5, sizeof(md5_ctx), dgshft(md5), iuf(rhash_md5), 0 }, /* 128 bit */
{ &info_sha1, sizeof(sha1_ctx), dgshft(sha1), iuf(rhash_sha1), 0 }, /* 160 bit */
#if 0
{ &info_tiger, sizeof(tiger_ctx), dgshft(tiger), iuf(rhash_tiger), 0 }, /* 192 bit */
{ &info_tth, sizeof(tth_ctx), dgshft2(tth, tiger.hash), iuf(rhash_tth), 0 }, /* 192 bit */
{ &info_ed2k, sizeof(ed2k_ctx), dgshft2(ed2k, md4_context_inner.hash), iuf(rhash_ed2k), 0 }, /* 128 bit */
{ &info_aich, sizeof(aich_ctx), dgshft2(aich, sha1_context.hash), iuf(rhash_aich), (pcleanup_t)rhash_aich_cleanup }, /* 160 bit */
{ &info_whirlpool, sizeof(whirlpool_ctx), dgshft(whirlpool), iuf(rhash_whirlpool), 0 }, /* 512 bit */
{ &info_rmd160, sizeof(ripemd160_ctx), dgshft(ripemd160), iuf(rhash_ripemd160), 0 }, /* 160 bit */
{ &info_gost94, sizeof(gost94_ctx), dgshft(gost94), iuf(rhash_gost94), 0 }, /* 256 bit */
{ &info_gost94pro, sizeof(gost94_ctx), dgshft(gost94), iuf2(rhash_gost94_cryptopro, rhash_gost94), 0 }, /* 256 bit */
{ &info_has160, sizeof(has160_ctx), dgshft(has160), iuf(rhash_has160), 0 }, /* 160 bit */
{ &info_gost12_256, sizeof(gost12_ctx), dgshft2(gost12, h) + 32, iuf2(rhash_gost12_256, rhash_gost12), 0 }, /* 256 bit */
{ &info_gost12_512, sizeof(gost12_ctx), dgshft2(gost12, h), iuf2(rhash_gost12_512, rhash_gost12), 0 }, /* 512 bit */
#endif
{ &info_sha224, sizeof(sha256_ctx), dgshft(sha256), iuf2(rhash_sha224, rhash_sha256), 0 }, /* 224 bit */
{ &info_sha256, sizeof(sha256_ctx), dgshft(sha256), iuf(rhash_sha256), 0 }, /* 256 bit */
{ &info_sha384, sizeof(sha512_ctx), dgshft(sha512), iuf2(rhash_sha384, rhash_sha512), 0 }, /* 384 bit */
{ &info_sha512, sizeof(sha512_ctx), dgshft(sha512), iuf(rhash_sha512), 0 }, /* 512 bit */
#if 0
{ &info_edr256, sizeof(edonr_ctx), dgshft2(edonr, u.data256.hash) + 32, iuf(rhash_edonr256), 0 }, /* 256 bit */
{ &info_edr512, sizeof(edonr_ctx), dgshft2(edonr, u.data512.hash) + 64, iuf(rhash_edonr512), 0 }, /* 512 bit */
#endif
{ &info_sha3_224, sizeof(sha3_ctx), dgshft(sha3), iuf2(rhash_sha3_224, rhash_sha3), 0 }, /* 224 bit */
{ &info_sha3_256, sizeof(sha3_ctx), dgshft(sha3), iuf2(rhash_sha3_256, rhash_sha3), 0 }, /* 256 bit */
{ &info_sha3_384, sizeof(sha3_ctx), dgshft(sha3), iuf2(rhash_sha3_384, rhash_sha3), 0 }, /* 384 bit */
{ &info_sha3_512, sizeof(sha3_ctx), dgshft(sha3), iuf2(rhash_sha3_512, rhash_sha3), 0 }, /* 512 bit */
#if 0
{ &info_crc32c, sizeof(uint32_t), 0, iuf(rhash_crc32c), 0 }, /* 32 bit */
{ &info_snf128, sizeof(snefru_ctx), dgshft(snefru), iuf2(rhash_snefru128, rhash_snefru), 0 }, /* 128 bit */
{ &info_snf256, sizeof(snefru_ctx), dgshft(snefru), iuf2(rhash_snefru256, rhash_snefru), 0 }, /* 256 bit */
#endif
};
/**
* Initialize requested algorithms.
*
* @param mask ids of hash sums to initialize
*/
void rhash_init_algorithms(unsigned mask)
{
(void)mask; /* unused now */
/* verify that RHASH_HASH_COUNT is the index of the major bit of RHASH_ALL_HASHES */
assert(1 == (RHASH_ALL_HASHES >> (RHASH_HASH_COUNT - 1)));
#ifdef GENERATE_GOST94_LOOKUP_TABLE
rhash_gost94_init_table();
#endif
rhash_uninitialized_algorithms = 0;
}
/**
* Returns information about a hash function by its hash_id.
*
* @param hash_id the id of hash algorithm
* @return pointer to the rhash_info structure containing the information
*/
const rhash_info* rhash_info_by_id(unsigned hash_id)
{
hash_id &= RHASH_ALL_HASHES;
/* check that one and only one bit is set */
if (!hash_id || (hash_id & (hash_id - 1)) != 0) return NULL;
return rhash_info_table[rhash_ctz(hash_id)].info;
}
#if 0
/* CRC32 helper functions */
/**
* Initialize crc32 hash.
*
* @param crc32 pointer to the hash to initialize
*/
static void rhash_crc32_init(uint32_t* crc32)
{
*crc32 = 0; /* note: context size is sizeof(uint32_t) */
}
/**
* Calculate message CRC32 hash.
* Can be called repeatedly with chunks of the message to be hashed.
*
* @param crc32 pointer to the hash
* @param msg message chunk
* @param size length of the message chunk
*/
static void rhash_crc32_update(uint32_t* crc32, const unsigned char* msg, size_t size)
{
*crc32 = rhash_get_crc32(*crc32, msg, size);
}
/**
* Store calculated hash into the given array.
*
* @param crc32 pointer to the current hash value
* @param result calculated hash in binary form
*/
static void rhash_crc32_final(uint32_t* crc32, unsigned char* result)
{
#if defined(CPU_IA32) || defined(CPU_X64)
/* intel CPUs support assigment with non 32-bit aligned pointers */
*(unsigned*)result = be2me_32(*crc32);
#else
/* correct saving BigEndian integer on all archs */
result[0] = (unsigned char)(*crc32 >> 24), result[1] = (unsigned char)(*crc32 >> 16);
result[2] = (unsigned char)(*crc32 >> 8), result[3] = (unsigned char)(*crc32);
#endif
}
/**
* Initialize crc32c hash.
*
* @param crc32c pointer to the hash to initialize
*/
static void rhash_crc32c_init(uint32_t* crc32c)
{
*crc32c = 0; /* note: context size is sizeof(uint32_t) */
}
/**
* Calculate message CRC32C hash.
* Can be called repeatedly with chunks of the message to be hashed.
*
* @param crc32c pointer to the hash
* @param msg message chunk
* @param size length of the message chunk
*/
static void rhash_crc32c_update(uint32_t* crc32c, const unsigned char* msg, size_t size)
{
*crc32c = rhash_get_crc32c(*crc32c, msg, size);
}
/**
* Store calculated hash into the given array.
*
* @param crc32c pointer to the current hash value
* @param result calculated hash in binary form
*/
static void rhash_crc32c_final(uint32_t* crc32c, unsigned char* result)
{
#if defined(CPU_IA32) || defined(CPU_X64)
/* intel CPUs support assigment with non 32-bit aligned pointers */
*(unsigned*)result = be2me_32(*crc32c);
#else
/* correct saving BigEndian integer on all archs */
result[0] = (unsigned char)(*crc32c >> 24), result[1] = (unsigned char)(*crc32c >> 16);
result[2] = (unsigned char)(*crc32c >> 8), result[3] = (unsigned char)(*crc32c);
#endif
}
#endif
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