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https://github.com/Laupetin/OpenAssetTools.git
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131 lines
3.4 KiB
C
131 lines
3.4 KiB
C
/* LibTomCrypt, modular cryptographic library -- Tom St Denis
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*
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* LibTomCrypt is a library that provides various cryptographic
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* algorithms in a highly modular and flexible manner.
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*
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* The library is free for all purposes without any express
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* guarantee it works.
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*/
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/**
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@param sha512_256.c
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SHA512/256 hash included in sha512.c
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*/
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#include "tomcrypt.h"
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#if defined(LTC_SHA512_256) && defined(LTC_SHA512)
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const struct ltc_hash_descriptor sha512_256_desc =
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{
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"sha512-256",
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16,
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32,
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128,
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/* OID */
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{ 2, 16, 840, 1, 101, 3, 4, 2, 6, },
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9,
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&sha512_256_init,
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&sha512_process,
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&sha512_256_done,
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&sha512_256_test,
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NULL
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};
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/**
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Initialize the hash state
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@param md The hash state you wish to initialize
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@return CRYPT_OK if successful
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*/
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int sha512_256_init(hash_state * md)
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{
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LTC_ARGCHK(md != NULL);
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md->sha512.curlen = 0;
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md->sha512.length = 0;
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md->sha512.state[0] = CONST64(0x22312194FC2BF72C);
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md->sha512.state[1] = CONST64(0x9F555FA3C84C64C2);
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md->sha512.state[2] = CONST64(0x2393B86B6F53B151);
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md->sha512.state[3] = CONST64(0x963877195940EABD);
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md->sha512.state[4] = CONST64(0x96283EE2A88EFFE3);
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md->sha512.state[5] = CONST64(0xBE5E1E2553863992);
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md->sha512.state[6] = CONST64(0x2B0199FC2C85B8AA);
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md->sha512.state[7] = CONST64(0x0EB72DDC81C52CA2);
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return CRYPT_OK;
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}
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/**
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Terminate the hash to get the digest
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@param md The hash state
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@param out [out] The destination of the hash (48 bytes)
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@return CRYPT_OK if successful
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*/
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int sha512_256_done(hash_state * md, unsigned char *out)
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{
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unsigned char buf[64];
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LTC_ARGCHK(md != NULL);
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LTC_ARGCHK(out != NULL);
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if (md->sha512.curlen >= sizeof(md->sha512.buf)) {
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return CRYPT_INVALID_ARG;
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}
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sha512_done(md, buf);
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XMEMCPY(out, buf, 32);
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#ifdef LTC_CLEAN_STACK
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zeromem(buf, sizeof(buf));
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#endif
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return CRYPT_OK;
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}
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/**
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Self-test the hash
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@return CRYPT_OK if successful, CRYPT_NOP if self-tests have been disabled
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*/
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int sha512_256_test(void)
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{
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#ifndef LTC_TEST
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return CRYPT_NOP;
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#else
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static const struct {
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const char *msg;
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unsigned char hash[32];
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} tests[] = {
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{ "abc",
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{ 0x53, 0x04, 0x8E, 0x26, 0x81, 0x94, 0x1E, 0xF9,
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0x9B, 0x2E, 0x29, 0xB7, 0x6B, 0x4C, 0x7D, 0xAB,
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0xE4, 0xC2, 0xD0, 0xC6, 0x34, 0xFC, 0x6D, 0x46,
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0xE0, 0xE2, 0xF1, 0x31, 0x07, 0xE7, 0xAF, 0x23 }
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},
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{ "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu",
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{ 0x39, 0x28, 0xE1, 0x84, 0xFB, 0x86, 0x90, 0xF8,
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0x40, 0xDA, 0x39, 0x88, 0x12, 0x1D, 0x31, 0xBE,
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0x65, 0xCB, 0x9D, 0x3E, 0xF8, 0x3E, 0xE6, 0x14,
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0x6F, 0xEA, 0xC8, 0x61, 0xE1, 0x9B, 0x56, 0x3A }
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},
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};
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int i;
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unsigned char tmp[32];
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hash_state md;
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for (i = 0; i < (int)(sizeof(tests) / sizeof(tests[0])); i++) {
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sha512_256_init(&md);
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sha512_256_process(&md, (unsigned char*)tests[i].msg, (unsigned long)strlen(tests[i].msg));
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sha512_256_done(&md, tmp);
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if (compare_testvector(tmp, sizeof(tmp), tests[i].hash, sizeof(tests[i].hash), "SHA512-265", i)) {
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return CRYPT_FAIL_TESTVECTOR;
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}
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}
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return CRYPT_OK;
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#endif
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}
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#endif /* defined(LTC_SHA384) && defined(LTC_SHA512) */
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/* ref: HEAD -> master, tag: v1.18.2 */
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/* git commit: 7e7eb695d581782f04b24dc444cbfde86af59853 */
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/* commit time: 2018-07-01 22:49:01 +0200 */
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