+
−/* 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: $Format:%ai$ */