Mercurial > dropbear
annotate libtomcrypt/src/hashes/sha2/sha512_256.c @ 1902:4a6725ac957c
Revert "Don't include sk keys at all in KEX list"
This reverts git commit f972813ecdc7bb981d25b5a63638bd158f1c8e72.
The sk algorithms need to remain in the sigalgs list so that they
are included in the server-sig-algs ext-info message sent by
the server. RFC8308 for server-sig-algs requires that all algorithms are
listed (though OpenSSH client 8.4p1 tested doesn't require that)
author | Matt Johnston <matt@ucc.asn.au> |
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date | Thu, 24 Mar 2022 13:42:08 +0800 |
parents | 6dba84798cd5 |
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rev | line source |
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1471
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1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis |
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2 * |
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3 * LibTomCrypt is a library that provides various cryptographic |
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4 * algorithms in a highly modular and flexible manner. |
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5 * |
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6 * The library is free for all purposes without any express |
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7 * guarantee it works. |
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8 */ |
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9 /** |
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10 @param sha512_256.c |
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11 SHA512/256 hash included in sha512.c |
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12 */ |
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13 |
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14 #include "tomcrypt.h" |
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15 |
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16 #if defined(LTC_SHA512_256) && defined(LTC_SHA512) |
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17 |
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18 const struct ltc_hash_descriptor sha512_256_desc = |
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19 { |
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20 "sha512-256", |
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21 16, |
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22 32, |
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23 128, |
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24 |
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25 /* OID */ |
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26 { 2, 16, 840, 1, 101, 3, 4, 2, 6, }, |
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27 9, |
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28 |
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29 &sha512_256_init, |
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30 &sha512_process, |
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31 &sha512_256_done, |
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32 &sha512_256_test, |
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33 NULL |
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34 }; |
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35 |
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36 /** |
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37 Initialize the hash state |
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38 @param md The hash state you wish to initialize |
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39 @return CRYPT_OK if successful |
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40 */ |
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41 int sha512_256_init(hash_state * md) |
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42 { |
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43 LTC_ARGCHK(md != NULL); |
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44 |
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45 md->sha512.curlen = 0; |
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46 md->sha512.length = 0; |
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47 md->sha512.state[0] = CONST64(0x22312194FC2BF72C); |
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48 md->sha512.state[1] = CONST64(0x9F555FA3C84C64C2); |
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49 md->sha512.state[2] = CONST64(0x2393B86B6F53B151); |
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50 md->sha512.state[3] = CONST64(0x963877195940EABD); |
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51 md->sha512.state[4] = CONST64(0x96283EE2A88EFFE3); |
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52 md->sha512.state[5] = CONST64(0xBE5E1E2553863992); |
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53 md->sha512.state[6] = CONST64(0x2B0199FC2C85B8AA); |
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54 md->sha512.state[7] = CONST64(0x0EB72DDC81C52CA2); |
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55 return CRYPT_OK; |
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56 } |
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57 |
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58 /** |
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59 Terminate the hash to get the digest |
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60 @param md The hash state |
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61 @param out [out] The destination of the hash (48 bytes) |
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62 @return CRYPT_OK if successful |
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63 */ |
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64 int sha512_256_done(hash_state * md, unsigned char *out) |
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65 { |
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66 unsigned char buf[64]; |
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67 |
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68 LTC_ARGCHK(md != NULL); |
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69 LTC_ARGCHK(out != NULL); |
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70 |
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71 if (md->sha512.curlen >= sizeof(md->sha512.buf)) { |
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72 return CRYPT_INVALID_ARG; |
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73 } |
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74 |
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75 sha512_done(md, buf); |
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76 XMEMCPY(out, buf, 32); |
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77 #ifdef LTC_CLEAN_STACK |
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78 zeromem(buf, sizeof(buf)); |
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79 #endif |
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80 return CRYPT_OK; |
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81 } |
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82 |
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83 /** |
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84 Self-test the hash |
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85 @return CRYPT_OK if successful, CRYPT_NOP if self-tests have been disabled |
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86 */ |
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87 int sha512_256_test(void) |
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88 { |
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89 #ifndef LTC_TEST |
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90 return CRYPT_NOP; |
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91 #else |
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92 static const struct { |
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93 const char *msg; |
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94 unsigned char hash[32]; |
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95 } tests[] = { |
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96 { "abc", |
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97 { 0x53, 0x04, 0x8E, 0x26, 0x81, 0x94, 0x1E, 0xF9, |
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98 0x9B, 0x2E, 0x29, 0xB7, 0x6B, 0x4C, 0x7D, 0xAB, |
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99 0xE4, 0xC2, 0xD0, 0xC6, 0x34, 0xFC, 0x6D, 0x46, |
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100 0xE0, 0xE2, 0xF1, 0x31, 0x07, 0xE7, 0xAF, 0x23 } |
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101 }, |
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102 { "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu", |
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103 { 0x39, 0x28, 0xE1, 0x84, 0xFB, 0x86, 0x90, 0xF8, |
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104 0x40, 0xDA, 0x39, 0x88, 0x12, 0x1D, 0x31, 0xBE, |
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105 0x65, 0xCB, 0x9D, 0x3E, 0xF8, 0x3E, 0xE6, 0x14, |
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106 0x6F, 0xEA, 0xC8, 0x61, 0xE1, 0x9B, 0x56, 0x3A } |
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107 }, |
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108 }; |
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109 |
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110 int i; |
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111 unsigned char tmp[32]; |
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112 hash_state md; |
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113 |
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114 for (i = 0; i < (int)(sizeof(tests) / sizeof(tests[0])); i++) { |
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115 sha512_256_init(&md); |
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116 sha512_256_process(&md, (unsigned char*)tests[i].msg, (unsigned long)strlen(tests[i].msg)); |
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117 sha512_256_done(&md, tmp); |
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118 if (compare_testvector(tmp, sizeof(tmp), tests[i].hash, sizeof(tests[i].hash), "SHA512-265", i)) { |
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119 return CRYPT_FAIL_TESTVECTOR; |
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120 } |
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121 } |
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122 return CRYPT_OK; |
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123 #endif |
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124 } |
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125 |
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126 #endif /* defined(LTC_SHA384) && defined(LTC_SHA512) */ |
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127 |
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128 /* ref: $Format:%D$ */ |
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129 /* git commit: $Format:%H$ */ |
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130 /* commit time: $Format:%ai$ */ |