-/* LibTomCrypt, modular cryptographic library -- Tom St Denis
- *
- * LibTomCrypt is a library that provides various cryptographic
- * algorithms in a highly modular and flexible manner.
- *
- * The library is free for all purposes without any express
- * guarantee it works.
- */
-/**
- @param sha512_224.c
- SHA512/224 hash included in sha512.c
-*/
-
-#include "tomcrypt.h"
-
-#if defined(LTC_SHA512_224) && defined(LTC_SHA512)
-
-const struct ltc_hash_descriptor sha512_224_desc =
-{
- "sha512-224",
- 15,
- 28,
- 128,
-
- /* OID */
- { 2, 16, 840, 1, 101, 3, 4, 2, 5, },
- 9,
-
- &sha512_224_init,
- &sha512_process,
- &sha512_224_done,
- &sha512_224_test,
- NULL
-};
-
-/**
- Initialize the hash state
- @param md The hash state you wish to initialize
- @return CRYPT_OK if successful
-*/
-int sha512_224_init(hash_state * md)
-{
- LTC_ARGCHK(md != NULL);
-
- md->sha512.curlen = 0;
- md->sha512.length = 0;
- md->sha512.state[0] = CONST64(0x8C3D37C819544DA2);
- md->sha512.state[1] = CONST64(0x73E1996689DCD4D6);
- md->sha512.state[2] = CONST64(0x1DFAB7AE32FF9C82);
- md->sha512.state[3] = CONST64(0x679DD514582F9FCF);
- md->sha512.state[4] = CONST64(0x0F6D2B697BD44DA8);
- md->sha512.state[5] = CONST64(0x77E36F7304C48942);
- md->sha512.state[6] = CONST64(0x3F9D85A86A1D36C8);
- md->sha512.state[7] = CONST64(0x1112E6AD91D692A1);
- return CRYPT_OK;
-}
-
-/**
- Terminate the hash to get the digest
- @param md The hash state
- @param out [out] The destination of the hash (48 bytes)
- @return CRYPT_OK if successful
-*/
-int sha512_224_done(hash_state * md, unsigned char *out)
-{
- unsigned char buf[64];
-
- LTC_ARGCHK(md != NULL);
- LTC_ARGCHK(out != NULL);
-
- if (md->sha512.curlen >= sizeof(md->sha512.buf)) {
- return CRYPT_INVALID_ARG;
- }
-
- sha512_done(md, buf);
- XMEMCPY(out, buf, 28);
-#ifdef LTC_CLEAN_STACK
- zeromem(buf, sizeof(buf));
-#endif
- return CRYPT_OK;
-}
-
-/**
- Self-test the hash
- @return CRYPT_OK if successful, CRYPT_NOP if self-tests have been disabled
-*/
-int sha512_224_test(void)
-{
- #ifndef LTC_TEST
- return CRYPT_NOP;
- #else
- static const struct {
- const char *msg;
- unsigned char hash[28];
- } tests[] = {
- { "abc",
- { 0x46, 0x34, 0x27, 0x0F, 0x70, 0x7B, 0x6A, 0x54,
- 0xDA, 0xAE, 0x75, 0x30, 0x46, 0x08, 0x42, 0xE2,
- 0x0E, 0x37, 0xED, 0x26, 0x5C, 0xEE, 0xE9, 0xA4,
- 0x3E, 0x89, 0x24, 0xAA }
- },
- { "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu",
- { 0x23, 0xFE, 0xC5, 0xBB, 0x94, 0xD6, 0x0B, 0x23,
- 0x30, 0x81, 0x92, 0x64, 0x0B, 0x0C, 0x45, 0x33,
- 0x35, 0xD6, 0x64, 0x73, 0x4F, 0xE4, 0x0E, 0x72,
- 0x68, 0x67, 0x4A, 0xF9 }
- },
- };
-
- int i;
- unsigned char tmp[28];
- hash_state md;
-
- for (i = 0; i < (int)(sizeof(tests) / sizeof(tests[0])); i++) {
- sha512_224_init(&md);
- sha512_224_process(&md, (unsigned char*)tests[i].msg, (unsigned long)strlen(tests[i].msg));
- sha512_224_done(&md, tmp);
- if (compare_testvector(tmp, sizeof(tmp), tests[i].hash, sizeof(tests[i].hash), "SHA512-224", i)) {
- return CRYPT_FAIL_TESTVECTOR;
- }
- }
- return CRYPT_OK;
- #endif
-}
-
-#endif /* defined(LTC_SHA384) && defined(LTC_SHA512) */
-
-/* ref: $Format:%D$ */
-/* git commit: $Format:%H$ */
-/* commit time: $Format:%ai$ */