[457] | 1 | // Copyright (c) Microsoft. All rights reserved.
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| 2 | // Licensed under the MIT license. See LICENSE file in the project root for full license information.
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| 3 |
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| 4 | /*************************** sha384-512.c ***************************/
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| 5 | /********************* See RFC 4634 for details *********************/
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| 6 | /*
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| 7 | * Description:
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| 8 | * This file implements the Secure Hash Signature Standard
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| 9 | * algorithms as defined in the National Institute of Standards
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| 10 | * and Technology Federal Information Processing Standards
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| 11 | * Publication (FIPS PUB) 180-1 published on April 17, 1995, 180-2
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| 12 | * published on August 1, 2002, and the FIPS PUB 180-2 Change
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| 13 | * Notice published on February 28, 2004.
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| 14 | *
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| 15 | * A combined document showing all algorithms is available at
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| 16 | * http://csrc.nist.gov/publications/fips/
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| 17 | * fips180-2/fips180-2withchangenotice.pdf
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| 18 | *
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| 19 | * The SHA-384 and SHA-512 algorithms produce 384-bit and 512-bit
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| 20 | * message digests for a given data stream. It should take about
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| 21 | * 2**n steps to find a message with the same digest as a given
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| 22 | * message and 2**(n/2) to find any two messages with the same
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| 23 | * digest, when n is the digest size in bits. Therefore, this
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| 24 | * algorithm can serve as a means of providing a
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| 25 | * "fingerprint" for a message.
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| 26 | *
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| 27 | * Portability Issues:
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| 28 | * SHA-384 and SHA-512 are defined in terms of 64-bit "words",
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| 29 | * but if USE_32BIT_ONLY is #defined, this code is implemented in
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| 30 | * terms of 32-bit "words". This code uses <stdint.h> (included
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| 31 | * via "sha.h") to define the 64, 32 and 8 bit unsigned integer
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| 32 | * types. If your C compiler does not support 64 bit unsigned
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| 33 | * integers, and you do not #define USE_32BIT_ONLY, this code is
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| 34 | * not appropriate.
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| 35 | *
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| 36 | * Caveats:
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| 37 | * SHA-384 and SHA-512 are designed to work with messages less
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| 38 | * than 2^128 bits long. This implementation uses
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| 39 | * SHA384/512Input() to hash the bits that are a multiple of the
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| 40 | * size of an 8-bit character, and then uses SHA384/256FinalBits()
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| 41 | * to hash the final few bits of the input.
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| 42 | *
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| 43 | */
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| 44 |
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| 45 | #include <stdlib.h>
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| 46 | #include "azure_c_shared_utility/gballoc.h"
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| 47 |
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| 48 | #include "azure_c_shared_utility/sha.h"
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| 49 | #include "azure_c_shared_utility/sha-private.h"
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| 50 |
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| 51 | #ifdef USE_32BIT_ONLY
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| 52 | #error IoTHubClient does not support USE_32BIT_ONLY flag
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| 53 | /*
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| 54 | * Define 64-bit arithmetic in terms of 32-bit arithmetic.
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| 55 | * Each 64-bit number is represented in a 2-word array.
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| 56 | * All macros are defined such that the result is the last parameter.
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| 57 | */
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| 58 |
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| 59 | /*
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| 60 | * Define shift, rotate left and rotate right functions
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| 61 | */
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| 62 | #define SHA512_SHR(bits, word, ret) ( \
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| 63 | /* (((uint64_t)((word))) >> (bits)) */ \
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| 64 | (ret)[0] = (((bits) < 32) && ((bits) >= 0)) ? \
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| 65 | ((word)[0] >> (bits)) : 0, \
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| 66 | (ret)[1] = ((bits) > 32) ? ((word)[0] >> ((bits) - 32)) : \
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| 67 | ((bits) == 32) ? (word)[0] : \
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| 68 | ((bits) >= 0) ? \
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| 69 | (((word)[0] << (32 - (bits))) | \
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| 70 | ((word)[1] >> (bits))) : 0 )
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| 71 |
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| 72 | #define SHA512_SHL(bits, word, ret) ( \
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| 73 | /* (((uint64_t)(word)) << (bits)) */ \
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| 74 | (ret)[0] = ((bits) > 32) ? ((word)[1] << ((bits) - 32)) : \
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| 75 | ((bits) == 32) ? (word)[1] : \
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| 76 | ((bits) >= 0) ? \
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| 77 | (((word)[0] << (bits)) | \
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| 78 | ((word)[1] >> (32 - (bits)))) : \
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| 79 | 0, \
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| 80 | (ret)[1] = (((bits) < 32) && ((bits) >= 0)) ? \
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| 81 | ((word)[1] << (bits)) : 0)
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| 82 |
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| 83 | /*
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| 84 | * Define 64-bit OR
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| 85 | */
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| 86 | #define SHA512_OR(word1, word2, ret) ( \
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| 87 | (ret)[0] = (word1)[0] | (word2)[0], \
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| 88 | (ret)[1] = (word1)[1] | (word2)[1] )
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| 89 |
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| 90 | /*
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| 91 | * Define 64-bit XOR
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| 92 | */
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| 93 | #define SHA512_XOR(word1, word2, ret) ( \
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| 94 | (ret)[0] = (word1)[0] ^ (word2)[0], \
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| 95 | (ret)[1] = (word1)[1] ^ (word2)[1] )
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| 96 |
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| 97 | /*
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| 98 | * Define 64-bit AND
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| 99 | */
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| 100 | #define SHA512_AND(word1, word2, ret) ( \
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| 101 | (ret)[0] = (word1)[0] & (word2)[0], \
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| 102 | (ret)[1] = (word1)[1] & (word2)[1] )
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| 103 |
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| 104 | /*
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| 105 | * Define 64-bit TILDA
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| 106 | */
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| 107 | #define SHA512_TILDA(word, ret) \
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| 108 | ( (ret)[0] = ~(word)[0], (ret)[1] = ~(word)[1] )
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| 109 |
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| 110 | /*
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| 111 | * Define 64-bit ADD
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| 112 | */
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| 113 | #define SHA512_ADD(word1, word2, ret) ( \
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| 114 | (ret)[1] = (word1)[1], (ret)[1] += (word2)[1], \
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| 115 | (ret)[0] = (word1)[0] + (word2)[0] + ((ret)[1] < (word1)[1]) )
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| 116 |
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| 117 | /*
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| 118 | * Add the 4word value in word2 to word1.
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| 119 | */
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| 120 | static uint32_t ADDTO4_temp, ADDTO4_temp2;
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| 121 | #define SHA512_ADDTO4(word1, word2) ( \
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| 122 | ADDTO4_temp = (word1)[3], \
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| 123 | (word1)[3] += (word2)[3], \
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| 124 | ADDTO4_temp2 = (word1)[2], \
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| 125 | (word1)[2] += (word2)[2] + ((word1)[3] < ADDTO4_temp), \
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| 126 | ADDTO4_temp = (word1)[1], \
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| 127 | (word1)[1] += (word2)[1] + ((word1)[2] < ADDTO4_temp2), \
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| 128 | (word1)[0] += (word2)[0] + ((word1)[1] < ADDTO4_temp))
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| 129 |
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| 130 | /*
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| 131 | * Add the 2word value in word2 to word1.
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| 132 | */
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| 133 | static uint32_t ADDTO2_temp;
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| 134 | #define SHA512_ADDTO2(word1, word2) ( \
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| 135 | ADDTO2_temp = (word1)[1], \
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| 136 | (word1)[1] += (word2)[1], \
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| 137 | (word1)[0] += (word2)[0] + ((word1)[1] < ADDTO2_temp) )
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| 138 |
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| 139 | /*
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| 140 | * SHA rotate ((word >> bits) | (word << (64-bits)))
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| 141 | */
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| 142 | static uint32_t ROTR_temp1[2], ROTR_temp2[2];
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| 143 | #define SHA512_ROTR(bits, word, ret) ( \
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| 144 | SHA512_SHR((bits), (word), ROTR_temp1), \
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| 145 | SHA512_SHL(64-(bits), (word), ROTR_temp2), \
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| 146 | SHA512_OR(ROTR_temp1, ROTR_temp2, (ret)) )
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| 147 |
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| 148 | /*
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| 149 | * Define the SHA SIGMA and sigma macros
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| 150 | * SHA512_ROTR(28,word) ^ SHA512_ROTR(34,word) ^ SHA512_ROTR(39,word)
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| 151 | */
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| 152 | static uint32_t SIGMA0_temp1[2], SIGMA0_temp2[2],
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| 153 | SIGMA0_temp3[2], SIGMA0_temp4[2];
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| 154 | #define SHA512_SIGMA0(word, ret) ( \
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| 155 | SHA512_ROTR(28, (word), SIGMA0_temp1), \
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| 156 | SHA512_ROTR(34, (word), SIGMA0_temp2), \
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| 157 | SHA512_ROTR(39, (word), SIGMA0_temp3), \
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| 158 | SHA512_XOR(SIGMA0_temp2, SIGMA0_temp3, SIGMA0_temp4), \
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| 159 | SHA512_XOR(SIGMA0_temp1, SIGMA0_temp4, (ret)) )
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| 160 |
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| 161 | /*
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| 162 | * SHA512_ROTR(14,word) ^ SHA512_ROTR(18,word) ^ SHA512_ROTR(41,word)
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| 163 | */
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| 164 | static uint32_t SIGMA1_temp1[2], SIGMA1_temp2[2],
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| 165 | SIGMA1_temp3[2], SIGMA1_temp4[2];
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| 166 | #define SHA512_SIGMA1(word, ret) ( \
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| 167 | SHA512_ROTR(14, (word), SIGMA1_temp1), \
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| 168 | SHA512_ROTR(18, (word), SIGMA1_temp2), \
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| 169 | SHA512_ROTR(41, (word), SIGMA1_temp3), \
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| 170 | SHA512_XOR(SIGMA1_temp2, SIGMA1_temp3, SIGMA1_temp4), \
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| 171 | SHA512_XOR(SIGMA1_temp1, SIGMA1_temp4, (ret)) )
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| 172 |
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| 173 | /*
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| 174 | * (SHA512_ROTR( 1,word) ^ SHA512_ROTR( 8,word) ^ SHA512_SHR( 7,word))
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| 175 | */
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| 176 | static uint32_t sigma0_temp1[2], sigma0_temp2[2],
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| 177 | sigma0_temp3[2], sigma0_temp4[2];
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| 178 | #define SHA512_sigma0(word, ret) ( \
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| 179 | SHA512_ROTR( 1, (word), sigma0_temp1), \
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| 180 | SHA512_ROTR( 8, (word), sigma0_temp2), \
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| 181 | SHA512_SHR( 7, (word), sigma0_temp3), \
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| 182 | SHA512_XOR(sigma0_temp2, sigma0_temp3, sigma0_temp4), \
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| 183 | SHA512_XOR(sigma0_temp1, sigma0_temp4, (ret)) )
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| 184 |
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| 185 | /*
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| 186 | * (SHA512_ROTR(19,word) ^ SHA512_ROTR(61,word) ^ SHA512_SHR( 6,word))
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| 187 | */
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| 188 | static uint32_t sigma1_temp1[2], sigma1_temp2[2],
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| 189 | sigma1_temp3[2], sigma1_temp4[2];
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| 190 | #define SHA512_sigma1(word, ret) ( \
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| 191 | SHA512_ROTR(19, (word), sigma1_temp1), \
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| 192 | SHA512_ROTR(61, (word), sigma1_temp2), \
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| 193 | SHA512_SHR( 6, (word), sigma1_temp3), \
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| 194 | SHA512_XOR(sigma1_temp2, sigma1_temp3, sigma1_temp4), \
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| 195 | SHA512_XOR(sigma1_temp1, sigma1_temp4, (ret)) )
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| 196 |
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| 197 | #undef SHA_Ch
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| 198 | #undef SHA_Maj
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| 199 |
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| 200 | #ifndef USE_MODIFIED_MACROS
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| 201 | /*
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| 202 | * These definitions are the ones used in FIPS-180-2, section 4.1.3
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| 203 | * Ch(x,y,z) ((x & y) ^ (~x & z))
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| 204 | */
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| 205 | static uint32_t Ch_temp1[2], Ch_temp2[2], Ch_temp3[2];
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| 206 | #define SHA_Ch(x, y, z, ret) ( \
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| 207 | SHA512_AND(x, y, Ch_temp1), \
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| 208 | SHA512_TILDA(x, Ch_temp2), \
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| 209 | SHA512_AND(Ch_temp2, z, Ch_temp3), \
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| 210 | SHA512_XOR(Ch_temp1, Ch_temp3, (ret)) )
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| 211 | /*
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| 212 | * Maj(x,y,z) (((x)&(y)) ^ ((x)&(z)) ^ ((y)&(z)))
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| 213 | */
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| 214 | static uint32_t Maj_temp1[2], Maj_temp2[2],
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| 215 | Maj_temp3[2], Maj_temp4[2];
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| 216 | #define SHA_Maj(x, y, z, ret) ( \
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| 217 | SHA512_AND(x, y, Maj_temp1), \
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| 218 | SHA512_AND(x, z, Maj_temp2), \
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| 219 | SHA512_AND(y, z, Maj_temp3), \
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| 220 | SHA512_XOR(Maj_temp2, Maj_temp3, Maj_temp4), \
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| 221 | SHA512_XOR(Maj_temp1, Maj_temp4, (ret)) )
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| 222 |
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| 223 | #else /* !USE_32BIT_ONLY */
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| 224 | /*
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| 225 | * These definitions are potentially faster equivalents for the ones
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| 226 | * used in FIPS-180-2, section 4.1.3.
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| 227 | * ((x & y) ^ (~x & z)) becomes
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| 228 | * ((x & (y ^ z)) ^ z)
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| 229 | */
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| 230 | #define SHA_Ch(x, y, z, ret) ( \
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| 231 | (ret)[0] = (((x)[0] & ((y)[0] ^ (z)[0])) ^ (z)[0]), \
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| 232 | (ret)[1] = (((x)[1] & ((y)[1] ^ (z)[1])) ^ (z)[1]) )
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| 233 |
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| 234 | /*
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| 235 | * ((x & y) ^ (x & z) ^ (y & z)) becomes
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| 236 | * ((x & (y | z)) | (y & z))
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| 237 | */
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| 238 | #define SHA_Maj(x, y, z, ret) ( \
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| 239 | ret[0] = (((x)[0] & ((y)[0] | (z)[0])) | ((y)[0] & (z)[0])), \
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| 240 | ret[1] = (((x)[1] & ((y)[1] | (z)[1])) | ((y)[1] & (z)[1])) )
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| 241 | #endif /* USE_MODIFIED_MACROS */
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| 242 |
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| 243 | /*
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| 244 | * add "length" to the length
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| 245 | */
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| 246 | static uint32_t addTemp[4] = { 0, 0, 0, 0 };
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| 247 | #define SHA384_512AddLength(context, length) ( \
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| 248 | addTemp[3] = (length), SHA512_ADDTO4((context)->Length, addTemp), \
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| 249 | (context)->Corrupted = (((context)->Length[3] == 0) && \
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| 250 | ((context)->Length[2] == 0) && ((context)->Length[1] == 0) && \
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| 251 | ((context)->Length[0] < 8)) ? 1 : 0 )
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| 252 |
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| 253 | /* Local Function Prototypes */
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| 254 | static void SHA384_512Finalize(SHA512Context *context,
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| 255 | uint8_t Pad_Byte);
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| 256 | static void SHA384_512PadMessage(SHA512Context *context,
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| 257 | uint8_t Pad_Byte);
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| 258 | static void SHA384_512ProcessMessageBlock(SHA512Context *context);
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| 259 | static int SHA384_512Reset(SHA512Context *context, uint32_t H0[]);
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| 260 | static int SHA384_512ResultN(SHA512Context *context,
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| 261 | uint8_t Message_Digest[], int HashSize);
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| 262 |
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| 263 | /* Initial Hash Values: FIPS-180-2 sections 5.3.3 and 5.3.4 */
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| 264 | static uint32_t SHA384_H0[SHA512HashSize / 4] = {
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| 265 | 0xCBBB9D5D, 0xC1059ED8, 0x629A292A, 0x367CD507, 0x9159015A,
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| 266 | 0x3070DD17, 0x152FECD8, 0xF70E5939, 0x67332667, 0xFFC00B31,
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| 267 | 0x8EB44A87, 0x68581511, 0xDB0C2E0D, 0x64F98FA7, 0x47B5481D,
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| 268 | 0xBEFA4FA4
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| 269 | };
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| 270 |
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| 271 | static uint32_t SHA512_H0[SHA512HashSize / 4] = {
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| 272 | 0x6A09E667, 0xF3BCC908, 0xBB67AE85, 0x84CAA73B, 0x3C6EF372,
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| 273 | 0xFE94F82B, 0xA54FF53A, 0x5F1D36F1, 0x510E527F, 0xADE682D1,
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| 274 | 0x9B05688C, 0x2B3E6C1F, 0x1F83D9AB, 0xFB41BD6B, 0x5BE0CD19,
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| 275 | 0x137E2179
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| 276 | };
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| 277 |
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| 278 | #else /* !USE_32BIT_ONLY */
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| 279 |
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| 280 | /* Define the SHA shift, rotate left and rotate right macro */
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| 281 | #define SHA512_SHR(bits,word) (((uint64_t)(word)) >> (bits))
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| 282 | #define SHA512_ROTR(bits,word) ((((uint64_t)(word)) >> (bits)) | \
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| 283 | (((uint64_t)(word)) << (64-(bits))))
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| 284 |
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| 285 | /* Define the SHA SIGMA and sigma macros */
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| 286 | #define SHA512_SIGMA0(word) \
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| 287 | (SHA512_ROTR(28,word) ^ SHA512_ROTR(34,word) ^ SHA512_ROTR(39,word))
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| 288 | #define SHA512_SIGMA1(word) \
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| 289 | (SHA512_ROTR(14,word) ^ SHA512_ROTR(18,word) ^ SHA512_ROTR(41,word))
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| 290 | #define SHA512_sigma0(word) \
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| 291 | (SHA512_ROTR( 1,word) ^ SHA512_ROTR( 8,word) ^ SHA512_SHR( 7,word))
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| 292 | #define SHA512_sigma1(word) \
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| 293 | (SHA512_ROTR(19,word) ^ SHA512_ROTR(61,word) ^ SHA512_SHR( 6,word))
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| 294 |
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| 295 | /*
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| 296 | * add "length" to the length
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| 297 | */
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| 298 | #define SHA384_512AddLength(context, length) \
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| 299 | (addTemp = context->Length_Low, context->Corrupted = \
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| 300 | ((context->Length_Low += length) < addTemp) && \
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| 301 | (++context->Length_High == 0) ? 1 : 0)
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| 302 |
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| 303 | /* Local Function Prototypes */
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| 304 | static void SHA384_512Finalize(SHA512Context *context,
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| 305 | uint8_t Pad_Byte);
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| 306 | static void SHA384_512PadMessage(SHA512Context *context,
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| 307 | uint8_t Pad_Byte);
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| 308 | static void SHA384_512ProcessMessageBlock(SHA512Context *context);
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| 309 | static int SHA384_512Reset(SHA512Context *context, uint64_t H0[]);
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| 310 | static int SHA384_512ResultN(SHA512Context *context,
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| 311 | uint8_t Message_Digest[], int HashSize);
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| 312 |
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| 313 | /* Initial Hash Values: FIPS-180-2 sections 5.3.3 and 5.3.4 */
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| 314 | static uint64_t SHA384_H0[] = {
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| 315 | 0xCBBB9D5DC1059ED8ull, 0x629A292A367CD507ull, 0x9159015A3070DD17ull,
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| 316 | 0x152FECD8F70E5939ull, 0x67332667FFC00B31ull, 0x8EB44A8768581511ull,
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| 317 | 0xDB0C2E0D64F98FA7ull, 0x47B5481DBEFA4FA4ull
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| 318 | };
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| 319 | static uint64_t SHA512_H0[] = {
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| 320 | 0x6A09E667F3BCC908ull, 0xBB67AE8584CAA73Bull, 0x3C6EF372FE94F82Bull,
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| 321 | 0xA54FF53A5F1D36F1ull, 0x510E527FADE682D1ull, 0x9B05688C2B3E6C1Full,
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| 322 | 0x1F83D9ABFB41BD6Bull, 0x5BE0CD19137E2179ull
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| 323 | };
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| 324 |
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| 325 | #endif /* USE_32BIT_ONLY */
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| 326 |
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| 327 | /*
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| 328 | * SHA384Reset
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| 329 | *
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| 330 | * Description:
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| 331 | * This function will initialize the SHA384Context in preparation
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| 332 | * for computing a new SHA384 message digest.
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| 333 | *
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| 334 | * Parameters:
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| 335 | * context: [in/out]
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| 336 | * The context to reset.
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| 337 | *
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| 338 | * Returns:
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| 339 | * sha Error Code.
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| 340 | *
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| 341 | */
|
---|
| 342 | int SHA384Reset(SHA384Context *context)
|
---|
| 343 | {
|
---|
| 344 | return SHA384_512Reset(context, SHA384_H0);
|
---|
| 345 | }
|
---|
| 346 |
|
---|
| 347 | /*
|
---|
| 348 | * SHA384Input
|
---|
| 349 | *
|
---|
| 350 | * Description:
|
---|
| 351 | * This function accepts an array of octets as the next portion
|
---|
| 352 | * of the message.
|
---|
| 353 | *
|
---|
| 354 | * Parameters:
|
---|
| 355 | * context: [in/out]
|
---|
| 356 | * The SHA context to update
|
---|
| 357 | * message_array: [in]
|
---|
| 358 | * An array of characters representing the next portion of
|
---|
| 359 | * the message.
|
---|
| 360 | * length: [in]
|
---|
| 361 | * The length of the message in message_array
|
---|
| 362 | *
|
---|
| 363 | * Returns:
|
---|
| 364 | * sha Error Code.
|
---|
| 365 | *
|
---|
| 366 | */
|
---|
| 367 | int SHA384Input(SHA384Context *context,
|
---|
| 368 | const uint8_t *message_array, unsigned int length)
|
---|
| 369 | {
|
---|
| 370 | return SHA512Input(context, message_array, length);
|
---|
| 371 | }
|
---|
| 372 |
|
---|
| 373 | /*
|
---|
| 374 | * SHA384FinalBits
|
---|
| 375 | *
|
---|
| 376 | * Description:
|
---|
| 377 | * This function will add in any final bits of the message.
|
---|
| 378 | *
|
---|
| 379 | * Parameters:
|
---|
| 380 | * context: [in/out]
|
---|
| 381 | * The SHA context to update
|
---|
| 382 | * message_bits: [in]
|
---|
| 383 | * The final bits of the message, in the upper portion of the
|
---|
| 384 | * byte. (Use 0b###00000 instead of 0b00000### to input the
|
---|
| 385 | * three bits ###.)
|
---|
| 386 | * length: [in]
|
---|
| 387 | * The number of bits in message_bits, between 1 and 7.
|
---|
| 388 | *
|
---|
| 389 | * Returns:
|
---|
| 390 | * sha Error Code.
|
---|
| 391 | *
|
---|
| 392 | */
|
---|
| 393 | int SHA384FinalBits(SHA384Context *context,
|
---|
| 394 | const uint8_t message_bits, unsigned int length)
|
---|
| 395 | {
|
---|
| 396 | return SHA512FinalBits(context, message_bits, length);
|
---|
| 397 | }
|
---|
| 398 |
|
---|
| 399 | /*
|
---|
| 400 | * SHA384Result
|
---|
| 401 | *
|
---|
| 402 | * Description:
|
---|
| 403 | * This function will return the 384-bit message
|
---|
| 404 | * digest into the Message_Digest array provided by the caller.
|
---|
| 405 | * NOTE: The first octet of hash is stored in the 0th element,
|
---|
| 406 | * the last octet of hash in the 48th element.
|
---|
| 407 | *
|
---|
| 408 | * Parameters:
|
---|
| 409 | * context: [in/out]
|
---|
| 410 | * The context to use to calculate the SHA hash.
|
---|
| 411 | * Message_Digest: [out]
|
---|
| 412 | * Where the digest is returned.
|
---|
| 413 | *
|
---|
| 414 | * Returns:
|
---|
| 415 | * sha Error Code.
|
---|
| 416 | *
|
---|
| 417 | */
|
---|
| 418 | int SHA384Result(SHA384Context *context,
|
---|
| 419 | uint8_t Message_Digest[SHA384HashSize])
|
---|
| 420 | {
|
---|
| 421 | return SHA384_512ResultN(context, Message_Digest, SHA384HashSize);
|
---|
| 422 | }
|
---|
| 423 |
|
---|
| 424 | /*
|
---|
| 425 | * SHA512Reset
|
---|
| 426 | *
|
---|
| 427 | * Description:
|
---|
| 428 | * This function will initialize the SHA512Context in preparation
|
---|
| 429 | * for computing a new SHA512 message digest.
|
---|
| 430 | *
|
---|
| 431 | * Parameters:
|
---|
| 432 | * context: [in/out]
|
---|
| 433 | * The context to reset.
|
---|
| 434 | *
|
---|
| 435 | * Returns:
|
---|
| 436 | * sha Error Code.
|
---|
| 437 | *
|
---|
| 438 | */
|
---|
| 439 | int SHA512Reset(SHA512Context *context)
|
---|
| 440 | {
|
---|
| 441 | return SHA384_512Reset(context, SHA512_H0);
|
---|
| 442 | }
|
---|
| 443 |
|
---|
| 444 | /*
|
---|
| 445 | * SHA512Input
|
---|
| 446 | *
|
---|
| 447 | * Description:
|
---|
| 448 | * This function accepts an array of octets as the next portion
|
---|
| 449 | * of the message.
|
---|
| 450 | *
|
---|
| 451 | * Parameters:
|
---|
| 452 | * context: [in/out]
|
---|
| 453 | * The SHA context to update
|
---|
| 454 | * message_array: [in]
|
---|
| 455 | * An array of characters representing the next portion of
|
---|
| 456 | * the message.
|
---|
| 457 | * length: [in]
|
---|
| 458 | * The length of the message in message_array
|
---|
| 459 | *
|
---|
| 460 | * Returns:
|
---|
| 461 | * sha Error Code.
|
---|
| 462 | *
|
---|
| 463 | */
|
---|
| 464 | int SHA512Input(SHA512Context *context,
|
---|
| 465 | const uint8_t *message_array,
|
---|
| 466 | unsigned int length)
|
---|
| 467 | {
|
---|
| 468 | uint64_t addTemp;
|
---|
| 469 | if (!length)
|
---|
| 470 | return shaSuccess;
|
---|
[464] | 471 |
|
---|
| 472 | if (length > (sizeof(context->Message_Block) / sizeof(context->Message_Block[0])))
|
---|
| 473 | return shaBadParam;
|
---|
[457] | 474 |
|
---|
| 475 | if (!context || !message_array)
|
---|
| 476 | return shaNull;
|
---|
| 477 |
|
---|
| 478 | if (context->Computed) {
|
---|
| 479 | context->Corrupted = shaStateError;
|
---|
| 480 | return shaStateError;
|
---|
| 481 | }
|
---|
| 482 |
|
---|
| 483 | if (context->Corrupted)
|
---|
| 484 | return context->Corrupted;
|
---|
| 485 |
|
---|
| 486 | while (length-- && !context->Corrupted) {
|
---|
| 487 | context->Message_Block[context->Message_Block_Index++] =
|
---|
| 488 | (*message_array & 0xFF);
|
---|
| 489 |
|
---|
| 490 | if (!SHA384_512AddLength(context, 8) &&
|
---|
| 491 | (context->Message_Block_Index == SHA512_Message_Block_Size))
|
---|
| 492 | SHA384_512ProcessMessageBlock(context);
|
---|
| 493 |
|
---|
| 494 | message_array++;
|
---|
| 495 | }
|
---|
| 496 |
|
---|
| 497 | return shaSuccess;
|
---|
| 498 | }
|
---|
| 499 |
|
---|
| 500 | /*
|
---|
| 501 | * SHA512FinalBits
|
---|
| 502 | *
|
---|
| 503 | * Description:
|
---|
| 504 | * This function will add in any final bits of the message.
|
---|
| 505 | *
|
---|
| 506 | * Parameters:
|
---|
| 507 | * context: [in/out]
|
---|
| 508 | * The SHA context to update
|
---|
| 509 | * message_bits: [in]
|
---|
| 510 | * The final bits of the message, in the upper portion of the
|
---|
| 511 | * byte. (Use 0b###00000 instead of 0b00000### to input the
|
---|
| 512 | * three bits ###.)
|
---|
| 513 | * length: [in]
|
---|
| 514 | * The number of bits in message_bits, between 1 and 7.
|
---|
| 515 | *
|
---|
| 516 | * Returns:
|
---|
| 517 | * sha Error Code.
|
---|
| 518 | *
|
---|
| 519 | */
|
---|
| 520 | int SHA512FinalBits(SHA512Context *context,
|
---|
| 521 | const uint8_t message_bits, unsigned int length)
|
---|
| 522 | {
|
---|
| 523 | uint64_t addTemp;
|
---|
| 524 | uint8_t masks[8] = {
|
---|
| 525 | /* 0 0b00000000 */ 0x00, /* 1 0b10000000 */ 0x80,
|
---|
| 526 | /* 2 0b11000000 */ 0xC0, /* 3 0b11100000 */ 0xE0,
|
---|
| 527 | /* 4 0b11110000 */ 0xF0, /* 5 0b11111000 */ 0xF8,
|
---|
| 528 | /* 6 0b11111100 */ 0xFC, /* 7 0b11111110 */ 0xFE
|
---|
| 529 | };
|
---|
| 530 | uint8_t markbit[8] = {
|
---|
| 531 | /* 0 0b10000000 */ 0x80, /* 1 0b01000000 */ 0x40,
|
---|
| 532 | /* 2 0b00100000 */ 0x20, /* 3 0b00010000 */ 0x10,
|
---|
| 533 | /* 4 0b00001000 */ 0x08, /* 5 0b00000100 */ 0x04,
|
---|
| 534 | /* 6 0b00000010 */ 0x02, /* 7 0b00000001 */ 0x01
|
---|
| 535 | };
|
---|
| 536 |
|
---|
| 537 | if (!length)
|
---|
| 538 | return shaSuccess;
|
---|
| 539 |
|
---|
| 540 | if (!context)
|
---|
| 541 | return shaNull;
|
---|
| 542 |
|
---|
| 543 | if ((context->Computed) || (length >= 8) || (length == 0)) {
|
---|
| 544 | context->Corrupted = shaStateError;
|
---|
| 545 | return shaStateError;
|
---|
| 546 | }
|
---|
| 547 |
|
---|
| 548 | if (context->Corrupted)
|
---|
| 549 | return context->Corrupted;
|
---|
| 550 |
|
---|
| 551 | SHA384_512AddLength(context, length);
|
---|
| 552 | SHA384_512Finalize(context, (uint8_t)
|
---|
| 553 | ((message_bits & masks[length]) | markbit[length]));
|
---|
| 554 |
|
---|
| 555 | return shaSuccess;
|
---|
| 556 | }
|
---|
| 557 |
|
---|
| 558 | /*
|
---|
| 559 | * SHA384_512Finalize
|
---|
| 560 | *
|
---|
| 561 | * Description:
|
---|
| 562 | * This helper function finishes off the digest calculations.
|
---|
| 563 | *
|
---|
| 564 | * Parameters:
|
---|
| 565 | * context: [in/out]
|
---|
| 566 | * The SHA context to update
|
---|
| 567 | * Pad_Byte: [in]
|
---|
| 568 | * The last byte to add to the digest before the 0-padding
|
---|
| 569 | * and length. This will contain the last bits of the message
|
---|
| 570 | * followed by another single bit. If the message was an
|
---|
| 571 | * exact multiple of 8-bits long, Pad_Byte will be 0x80.
|
---|
| 572 | *
|
---|
| 573 | * Returns:
|
---|
| 574 | * sha Error Code.
|
---|
| 575 | *
|
---|
| 576 | */
|
---|
| 577 | static void SHA384_512Finalize(SHA512Context *context,
|
---|
| 578 | uint8_t Pad_Byte)
|
---|
| 579 | {
|
---|
| 580 | int_least16_t i;
|
---|
| 581 | SHA384_512PadMessage(context, Pad_Byte);
|
---|
| 582 | /* message may be sensitive, clear it out */
|
---|
| 583 | for (i = 0; i < SHA512_Message_Block_Size; ++i)
|
---|
| 584 | context->Message_Block[i] = 0;
|
---|
| 585 | #ifdef USE_32BIT_ONLY /* and clear length */
|
---|
| 586 | context->Length[0] = context->Length[1] = 0;
|
---|
| 587 | context->Length[2] = context->Length[3] = 0;
|
---|
| 588 | #else /* !USE_32BIT_ONLY */
|
---|
| 589 | context->Length_Low = 0;
|
---|
| 590 | context->Length_High = 0;
|
---|
| 591 | #endif /* USE_32BIT_ONLY */
|
---|
| 592 | context->Computed = 1;
|
---|
| 593 | }
|
---|
| 594 |
|
---|
| 595 | /*
|
---|
| 596 | * SHA512Result
|
---|
| 597 | *
|
---|
| 598 | * Description:
|
---|
| 599 | * This function will return the 512-bit message
|
---|
| 600 | * digest into the Message_Digest array provided by the caller.
|
---|
| 601 | * NOTE: The first octet of hash is stored in the 0th element,
|
---|
| 602 | * the last octet of hash in the 64th element.
|
---|
| 603 | *
|
---|
| 604 | * Parameters:
|
---|
| 605 | * context: [in/out]
|
---|
| 606 | * The context to use to calculate the SHA hash.
|
---|
| 607 | * Message_Digest: [out]
|
---|
| 608 | * Where the digest is returned.
|
---|
| 609 | *
|
---|
| 610 | * Returns:
|
---|
| 611 | * sha Error Code.
|
---|
| 612 | *
|
---|
| 613 | */
|
---|
| 614 | int SHA512Result(SHA512Context *context,
|
---|
| 615 | uint8_t Message_Digest[SHA512HashSize])
|
---|
| 616 | {
|
---|
| 617 | return SHA384_512ResultN(context, Message_Digest, SHA512HashSize);
|
---|
| 618 | }
|
---|
| 619 |
|
---|
| 620 | /*
|
---|
| 621 | * SHA384_512PadMessage
|
---|
| 622 | *
|
---|
| 623 | * Description:
|
---|
| 624 | * According to the standard, the message must be padded to an
|
---|
| 625 | * even 1024 bits. The first padding bit must be a '1'. The
|
---|
| 626 | * last 128 bits represent the length of the original message.
|
---|
| 627 | * All bits in between should be 0. This helper function will
|
---|
| 628 | * pad the message according to those rules by filling the
|
---|
| 629 | * Message_Block array accordingly. When it returns, it can be
|
---|
| 630 | * assumed that the message digest has been computed.
|
---|
| 631 | *
|
---|
| 632 | * Parameters:
|
---|
| 633 | * context: [in/out]
|
---|
| 634 | * The context to pad
|
---|
| 635 | * Pad_Byte: [in]
|
---|
| 636 | * The last byte to add to the digest before the 0-padding
|
---|
| 637 | * and length. This will contain the last bits of the message
|
---|
| 638 | * followed by another single bit. If the message was an
|
---|
| 639 | * exact multiple of 8-bits long, Pad_Byte will be 0x80.
|
---|
| 640 | *
|
---|
| 641 | * Returns:
|
---|
| 642 | * Nothing.
|
---|
| 643 | *
|
---|
| 644 | */
|
---|
| 645 | static void SHA384_512PadMessage(SHA512Context *context,
|
---|
| 646 | uint8_t Pad_Byte)
|
---|
| 647 | {
|
---|
| 648 | /*
|
---|
| 649 | * Check to see if the current message block is too small to hold
|
---|
| 650 | * the initial padding bits and length. If so, we will pad the
|
---|
| 651 | * block, process it, and then continue padding into a second
|
---|
| 652 | * block.
|
---|
| 653 | */
|
---|
| 654 | if (context->Message_Block_Index >= (SHA512_Message_Block_Size - 16)) {
|
---|
| 655 | context->Message_Block[context->Message_Block_Index++] = Pad_Byte;
|
---|
| 656 | while (context->Message_Block_Index < SHA512_Message_Block_Size)
|
---|
| 657 | context->Message_Block[context->Message_Block_Index++] = 0;
|
---|
| 658 |
|
---|
| 659 | SHA384_512ProcessMessageBlock(context);
|
---|
| 660 | }
|
---|
| 661 | else
|
---|
| 662 | context->Message_Block[context->Message_Block_Index++] = Pad_Byte;
|
---|
| 663 |
|
---|
| 664 | while (context->Message_Block_Index < (SHA512_Message_Block_Size - 16))
|
---|
| 665 | context->Message_Block[context->Message_Block_Index++] = 0;
|
---|
| 666 |
|
---|
| 667 | /*
|
---|
| 668 | * Store the message length as the last 16 octets
|
---|
| 669 | */
|
---|
| 670 | #ifdef USE_32BIT_ONLY
|
---|
| 671 | context->Message_Block[112] = (uint8_t)(context->Length[0] >> 24);
|
---|
| 672 | context->Message_Block[113] = (uint8_t)(context->Length[0] >> 16);
|
---|
| 673 | context->Message_Block[114] = (uint8_t)(context->Length[0] >> 8);
|
---|
| 674 | context->Message_Block[115] = (uint8_t)(context->Length[0]);
|
---|
| 675 | context->Message_Block[116] = (uint8_t)(context->Length[1] >> 24);
|
---|
| 676 | context->Message_Block[117] = (uint8_t)(context->Length[1] >> 16);
|
---|
| 677 | context->Message_Block[118] = (uint8_t)(context->Length[1] >> 8);
|
---|
| 678 | context->Message_Block[119] = (uint8_t)(context->Length[1]);
|
---|
| 679 |
|
---|
| 680 | context->Message_Block[120] = (uint8_t)(context->Length[2] >> 24);
|
---|
| 681 | context->Message_Block[121] = (uint8_t)(context->Length[2] >> 16);
|
---|
| 682 | context->Message_Block[122] = (uint8_t)(context->Length[2] >> 8);
|
---|
| 683 | context->Message_Block[123] = (uint8_t)(context->Length[2]);
|
---|
| 684 | context->Message_Block[124] = (uint8_t)(context->Length[3] >> 24);
|
---|
| 685 | context->Message_Block[125] = (uint8_t)(context->Length[3] >> 16);
|
---|
| 686 | context->Message_Block[126] = (uint8_t)(context->Length[3] >> 8);
|
---|
| 687 | context->Message_Block[127] = (uint8_t)(context->Length[3]);
|
---|
| 688 | #else /* !USE_32BIT_ONLY */
|
---|
| 689 | context->Message_Block[112] = (uint8_t)(context->Length_High >> 56);
|
---|
| 690 | context->Message_Block[113] = (uint8_t)(context->Length_High >> 48);
|
---|
| 691 | context->Message_Block[114] = (uint8_t)(context->Length_High >> 40);
|
---|
| 692 | context->Message_Block[115] = (uint8_t)(context->Length_High >> 32);
|
---|
| 693 | context->Message_Block[116] = (uint8_t)(context->Length_High >> 24);
|
---|
| 694 | context->Message_Block[117] = (uint8_t)(context->Length_High >> 16);
|
---|
| 695 | context->Message_Block[118] = (uint8_t)(context->Length_High >> 8);
|
---|
| 696 | context->Message_Block[119] = (uint8_t)(context->Length_High);
|
---|
| 697 |
|
---|
| 698 | context->Message_Block[120] = (uint8_t)(context->Length_Low >> 56);
|
---|
| 699 | context->Message_Block[121] = (uint8_t)(context->Length_Low >> 48);
|
---|
| 700 | context->Message_Block[122] = (uint8_t)(context->Length_Low >> 40);
|
---|
| 701 | context->Message_Block[123] = (uint8_t)(context->Length_Low >> 32);
|
---|
| 702 | context->Message_Block[124] = (uint8_t)(context->Length_Low >> 24);
|
---|
| 703 | context->Message_Block[125] = (uint8_t)(context->Length_Low >> 16);
|
---|
| 704 | context->Message_Block[126] = (uint8_t)(context->Length_Low >> 8);
|
---|
| 705 | context->Message_Block[127] = (uint8_t)(context->Length_Low);
|
---|
| 706 | #endif /* USE_32BIT_ONLY */
|
---|
| 707 |
|
---|
| 708 | SHA384_512ProcessMessageBlock(context);
|
---|
| 709 | }
|
---|
| 710 |
|
---|
| 711 | /*
|
---|
| 712 | * SHA384_512ProcessMessageBlock
|
---|
| 713 | *
|
---|
| 714 | * Description:
|
---|
| 715 | * This helper function will process the next 1024 bits of the
|
---|
| 716 | * message stored in the Message_Block array.
|
---|
| 717 | *
|
---|
| 718 | * Parameters:
|
---|
| 719 | * context: [in/out]
|
---|
| 720 | * The SHA context to update
|
---|
| 721 | *
|
---|
| 722 | * Returns:
|
---|
| 723 | * Nothing.
|
---|
| 724 | *
|
---|
| 725 | * Comments:
|
---|
| 726 | * Many of the variable names in this code, especially the
|
---|
| 727 | * single character names, were used because those were the
|
---|
| 728 | * names used in the publication.
|
---|
| 729 | *
|
---|
| 730 | *
|
---|
| 731 | */
|
---|
| 732 | static void SHA384_512ProcessMessageBlock(SHA512Context *context)
|
---|
| 733 | {
|
---|
| 734 | /* Constants defined in FIPS-180-2, section 4.2.3 */
|
---|
| 735 | #ifdef USE_32BIT_ONLY
|
---|
| 736 | static const uint32_t K[80 * 2] = {
|
---|
| 737 | 0x428A2F98, 0xD728AE22, 0x71374491, 0x23EF65CD, 0xB5C0FBCF,
|
---|
| 738 | 0xEC4D3B2F, 0xE9B5DBA5, 0x8189DBBC, 0x3956C25B, 0xF348B538,
|
---|
| 739 | 0x59F111F1, 0xB605D019, 0x923F82A4, 0xAF194F9B, 0xAB1C5ED5,
|
---|
| 740 | 0xDA6D8118, 0xD807AA98, 0xA3030242, 0x12835B01, 0x45706FBE,
|
---|
| 741 | 0x243185BE, 0x4EE4B28C, 0x550C7DC3, 0xD5FFB4E2, 0x72BE5D74,
|
---|
| 742 | 0xF27B896F, 0x80DEB1FE, 0x3B1696B1, 0x9BDC06A7, 0x25C71235,
|
---|
| 743 | 0xC19BF174, 0xCF692694, 0xE49B69C1, 0x9EF14AD2, 0xEFBE4786,
|
---|
| 744 | 0x384F25E3, 0x0FC19DC6, 0x8B8CD5B5, 0x240CA1CC, 0x77AC9C65,
|
---|
| 745 | 0x2DE92C6F, 0x592B0275, 0x4A7484AA, 0x6EA6E483, 0x5CB0A9DC,
|
---|
| 746 | 0xBD41FBD4, 0x76F988DA, 0x831153B5, 0x983E5152, 0xEE66DFAB,
|
---|
| 747 | 0xA831C66D, 0x2DB43210, 0xB00327C8, 0x98FB213F, 0xBF597FC7,
|
---|
| 748 | 0xBEEF0EE4, 0xC6E00BF3, 0x3DA88FC2, 0xD5A79147, 0x930AA725,
|
---|
| 749 | 0x06CA6351, 0xE003826F, 0x14292967, 0x0A0E6E70, 0x27B70A85,
|
---|
| 750 | 0x46D22FFC, 0x2E1B2138, 0x5C26C926, 0x4D2C6DFC, 0x5AC42AED,
|
---|
| 751 | 0x53380D13, 0x9D95B3DF, 0x650A7354, 0x8BAF63DE, 0x766A0ABB,
|
---|
| 752 | 0x3C77B2A8, 0x81C2C92E, 0x47EDAEE6, 0x92722C85, 0x1482353B,
|
---|
| 753 | 0xA2BFE8A1, 0x4CF10364, 0xA81A664B, 0xBC423001, 0xC24B8B70,
|
---|
| 754 | 0xD0F89791, 0xC76C51A3, 0x0654BE30, 0xD192E819, 0xD6EF5218,
|
---|
| 755 | 0xD6990624, 0x5565A910, 0xF40E3585, 0x5771202A, 0x106AA070,
|
---|
| 756 | 0x32BBD1B8, 0x19A4C116, 0xB8D2D0C8, 0x1E376C08, 0x5141AB53,
|
---|
| 757 | 0x2748774C, 0xDF8EEB99, 0x34B0BCB5, 0xE19B48A8, 0x391C0CB3,
|
---|
| 758 | 0xC5C95A63, 0x4ED8AA4A, 0xE3418ACB, 0x5B9CCA4F, 0x7763E373,
|
---|
| 759 | 0x682E6FF3, 0xD6B2B8A3, 0x748F82EE, 0x5DEFB2FC, 0x78A5636F,
|
---|
| 760 | 0x43172F60, 0x84C87814, 0xA1F0AB72, 0x8CC70208, 0x1A6439EC,
|
---|
| 761 | 0x90BEFFFA, 0x23631E28, 0xA4506CEB, 0xDE82BDE9, 0xBEF9A3F7,
|
---|
| 762 | 0xB2C67915, 0xC67178F2, 0xE372532B, 0xCA273ECE, 0xEA26619C,
|
---|
| 763 | 0xD186B8C7, 0x21C0C207, 0xEADA7DD6, 0xCDE0EB1E, 0xF57D4F7F,
|
---|
| 764 | 0xEE6ED178, 0x06F067AA, 0x72176FBA, 0x0A637DC5, 0xA2C898A6,
|
---|
| 765 | 0x113F9804, 0xBEF90DAE, 0x1B710B35, 0x131C471B, 0x28DB77F5,
|
---|
| 766 | 0x23047D84, 0x32CAAB7B, 0x40C72493, 0x3C9EBE0A, 0x15C9BEBC,
|
---|
| 767 | 0x431D67C4, 0x9C100D4C, 0x4CC5D4BE, 0xCB3E42B6, 0x597F299C,
|
---|
| 768 | 0xFC657E2A, 0x5FCB6FAB, 0x3AD6FAEC, 0x6C44198C, 0x4A475817
|
---|
| 769 | };
|
---|
| 770 | int t, t2, t8; /* Loop counter */
|
---|
| 771 | uint32_t temp1[2], temp2[2], /* Temporary word values */
|
---|
| 772 | temp3[2], temp4[2], temp5[2];
|
---|
| 773 | uint32_t W[2 * 80]; /* Word sequence */
|
---|
| 774 | uint32_t A[2], B[2], C[2], D[2], /* Word buffers */
|
---|
| 775 | E[2], F[2], G[2], H[2];
|
---|
| 776 |
|
---|
| 777 | /* Initialize the first 16 words in the array W */
|
---|
| 778 | for (t = t2 = t8 = 0; t < 16; t++, t8 += 8) {
|
---|
| 779 | W[t2++] = ((((uint32_t)context->Message_Block[t8])) << 24) |
|
---|
| 780 | ((((uint32_t)context->Message_Block[t8 + 1])) << 16) |
|
---|
| 781 | ((((uint32_t)context->Message_Block[t8 + 2])) << 8) |
|
---|
| 782 | ((((uint32_t)context->Message_Block[t8 + 3])));
|
---|
| 783 | W[t2++] = ((((uint32_t)context->Message_Block[t8 + 4])) << 24) |
|
---|
| 784 | ((((uint32_t)context->Message_Block[t8 + 5])) << 16) |
|
---|
| 785 | ((((uint32_t)context->Message_Block[t8 + 6])) << 8) |
|
---|
| 786 | ((((uint32_t)context->Message_Block[t8 + 7])));
|
---|
| 787 | }
|
---|
| 788 |
|
---|
| 789 | for (t = 16; t < 80; t++, t2 += 2) {
|
---|
| 790 | /* W[t] = SHA512_sigma1(W[t-2]) + W[t-7] +
|
---|
| 791 | SHA512_sigma0(W[t-15]) + W[t-16]; */
|
---|
| 792 | uint32_t *Wt2 = &W[t2 - 2 * 2];
|
---|
| 793 | uint32_t *Wt7 = &W[t2 - 7 * 2];
|
---|
| 794 | uint32_t *Wt15 = &W[t2 - 15 * 2];
|
---|
| 795 | uint32_t *Wt16 = &W[t2 - 16 * 2];
|
---|
| 796 | SHA512_sigma1(Wt2, temp1);
|
---|
| 797 | SHA512_ADD(temp1, Wt7, temp2);
|
---|
| 798 | SHA512_sigma0(Wt15, temp1);
|
---|
| 799 | SHA512_ADD(temp1, Wt16, temp3);
|
---|
| 800 | SHA512_ADD(temp2, temp3, &W[t2]);
|
---|
| 801 | }
|
---|
| 802 |
|
---|
| 803 | A[0] = context->Intermediate_Hash[0];
|
---|
| 804 | A[1] = context->Intermediate_Hash[1];
|
---|
| 805 | B[0] = context->Intermediate_Hash[2];
|
---|
| 806 | B[1] = context->Intermediate_Hash[3];
|
---|
| 807 | C[0] = context->Intermediate_Hash[4];
|
---|
| 808 | C[1] = context->Intermediate_Hash[5];
|
---|
| 809 | D[0] = context->Intermediate_Hash[6];
|
---|
| 810 | D[1] = context->Intermediate_Hash[7];
|
---|
| 811 | E[0] = context->Intermediate_Hash[8];
|
---|
| 812 | E[1] = context->Intermediate_Hash[9];
|
---|
| 813 | F[0] = context->Intermediate_Hash[10];
|
---|
| 814 | F[1] = context->Intermediate_Hash[11];
|
---|
| 815 | G[0] = context->Intermediate_Hash[12];
|
---|
| 816 | G[1] = context->Intermediate_Hash[13];
|
---|
| 817 | H[0] = context->Intermediate_Hash[14];
|
---|
| 818 | H[1] = context->Intermediate_Hash[15];
|
---|
| 819 |
|
---|
| 820 | for (t = t2 = 0; t < 80; t++, t2 += 2) {
|
---|
| 821 | /*
|
---|
| 822 | * temp1 = H + SHA512_SIGMA1(E) + SHA_Ch(E,F,G) + K[t] + W[t];
|
---|
| 823 | */
|
---|
| 824 | SHA512_SIGMA1(E, temp1);
|
---|
| 825 | SHA512_ADD(H, temp1, temp2);
|
---|
| 826 | SHA_Ch(E, F, G, temp3);
|
---|
| 827 | SHA512_ADD(temp2, temp3, temp4);
|
---|
| 828 | SHA512_ADD(&K[t2], &W[t2], temp5);
|
---|
| 829 | SHA512_ADD(temp4, temp5, temp1);
|
---|
| 830 | /*
|
---|
| 831 | * temp2 = SHA512_SIGMA0(A) + SHA_Maj(A,B,C);
|
---|
| 832 | */
|
---|
| 833 | SHA512_SIGMA0(A, temp3);
|
---|
| 834 | SHA_Maj(A, B, C, temp4);
|
---|
| 835 | SHA512_ADD(temp3, temp4, temp2);
|
---|
| 836 | H[0] = G[0]; H[1] = G[1];
|
---|
| 837 | G[0] = F[0]; G[1] = F[1];
|
---|
| 838 | F[0] = E[0]; F[1] = E[1];
|
---|
| 839 | SHA512_ADD(D, temp1, E);
|
---|
| 840 | D[0] = C[0]; D[1] = C[1];
|
---|
| 841 | C[0] = B[0]; C[1] = B[1];
|
---|
| 842 | B[0] = A[0]; B[1] = A[1];
|
---|
| 843 | SHA512_ADD(temp1, temp2, A);
|
---|
| 844 | }
|
---|
| 845 |
|
---|
| 846 | SHA512_ADDTO2(&context->Intermediate_Hash[0], A);
|
---|
| 847 | SHA512_ADDTO2(&context->Intermediate_Hash[2], B);
|
---|
| 848 | SHA512_ADDTO2(&context->Intermediate_Hash[4], C);
|
---|
| 849 | SHA512_ADDTO2(&context->Intermediate_Hash[6], D);
|
---|
| 850 | SHA512_ADDTO2(&context->Intermediate_Hash[8], E);
|
---|
| 851 | SHA512_ADDTO2(&context->Intermediate_Hash[10], F);
|
---|
| 852 | SHA512_ADDTO2(&context->Intermediate_Hash[12], G);
|
---|
| 853 | SHA512_ADDTO2(&context->Intermediate_Hash[14], H);
|
---|
| 854 |
|
---|
| 855 | #else /* !USE_32BIT_ONLY */
|
---|
| 856 | static const uint64_t K[80] = {
|
---|
| 857 | 0x428A2F98D728AE22ull, 0x7137449123EF65CDull, 0xB5C0FBCFEC4D3B2Full,
|
---|
| 858 | 0xE9B5DBA58189DBBCull, 0x3956C25BF348B538ull, 0x59F111F1B605D019ull,
|
---|
| 859 | 0x923F82A4AF194F9Bull, 0xAB1C5ED5DA6D8118ull, 0xD807AA98A3030242ull,
|
---|
| 860 | 0x12835B0145706FBEull, 0x243185BE4EE4B28Cull, 0x550C7DC3D5FFB4E2ull,
|
---|
| 861 | 0x72BE5D74F27B896Full, 0x80DEB1FE3B1696B1ull, 0x9BDC06A725C71235ull,
|
---|
| 862 | 0xC19BF174CF692694ull, 0xE49B69C19EF14AD2ull, 0xEFBE4786384F25E3ull,
|
---|
| 863 | 0x0FC19DC68B8CD5B5ull, 0x240CA1CC77AC9C65ull, 0x2DE92C6F592B0275ull,
|
---|
| 864 | 0x4A7484AA6EA6E483ull, 0x5CB0A9DCBD41FBD4ull, 0x76F988DA831153B5ull,
|
---|
| 865 | 0x983E5152EE66DFABull, 0xA831C66D2DB43210ull, 0xB00327C898FB213Full,
|
---|
| 866 | 0xBF597FC7BEEF0EE4ull, 0xC6E00BF33DA88FC2ull, 0xD5A79147930AA725ull,
|
---|
| 867 | 0x06CA6351E003826Full, 0x142929670A0E6E70ull, 0x27B70A8546D22FFCull,
|
---|
| 868 | 0x2E1B21385C26C926ull, 0x4D2C6DFC5AC42AEDull, 0x53380D139D95B3DFull,
|
---|
| 869 | 0x650A73548BAF63DEull, 0x766A0ABB3C77B2A8ull, 0x81C2C92E47EDAEE6ull,
|
---|
| 870 | 0x92722C851482353Bull, 0xA2BFE8A14CF10364ull, 0xA81A664BBC423001ull,
|
---|
| 871 | 0xC24B8B70D0F89791ull, 0xC76C51A30654BE30ull, 0xD192E819D6EF5218ull,
|
---|
| 872 | 0xD69906245565A910ull, 0xF40E35855771202Aull, 0x106AA07032BBD1B8ull,
|
---|
| 873 | 0x19A4C116B8D2D0C8ull, 0x1E376C085141AB53ull, 0x2748774CDF8EEB99ull,
|
---|
| 874 | 0x34B0BCB5E19B48A8ull, 0x391C0CB3C5C95A63ull, 0x4ED8AA4AE3418ACBull,
|
---|
| 875 | 0x5B9CCA4F7763E373ull, 0x682E6FF3D6B2B8A3ull, 0x748F82EE5DEFB2FCull,
|
---|
| 876 | 0x78A5636F43172F60ull, 0x84C87814A1F0AB72ull, 0x8CC702081A6439ECull,
|
---|
| 877 | 0x90BEFFFA23631E28ull, 0xA4506CEBDE82BDE9ull, 0xBEF9A3F7B2C67915ull,
|
---|
| 878 | 0xC67178F2E372532Bull, 0xCA273ECEEA26619Cull, 0xD186B8C721C0C207ull,
|
---|
| 879 | 0xEADA7DD6CDE0EB1Eull, 0xF57D4F7FEE6ED178ull, 0x06F067AA72176FBAull,
|
---|
| 880 | 0x0A637DC5A2C898A6ull, 0x113F9804BEF90DAEull, 0x1B710B35131C471Bull,
|
---|
| 881 | 0x28DB77F523047D84ull, 0x32CAAB7B40C72493ull, 0x3C9EBE0A15C9BEBCull,
|
---|
| 882 | 0x431D67C49C100D4Cull, 0x4CC5D4BECB3E42B6ull, 0x597F299CFC657E2Aull,
|
---|
| 883 | 0x5FCB6FAB3AD6FAECull, 0x6C44198C4A475817ull
|
---|
| 884 | };
|
---|
| 885 | int t, t8; /* Loop counter */
|
---|
| 886 | uint64_t temp1, temp2; /* Temporary word value */
|
---|
| 887 | uint64_t W[80]; /* Word sequence */
|
---|
| 888 | uint64_t A, B, C, D, E, F, G, H; /* Word buffers */
|
---|
| 889 |
|
---|
| 890 | /*
|
---|
| 891 | * Initialize the first 16 words in the array W
|
---|
| 892 | */
|
---|
| 893 | for (t = t8 = 0; t < 16; t++, t8 += 8)
|
---|
| 894 | W[t] = ((uint64_t)(context->Message_Block[t8]) << 56) |
|
---|
| 895 | ((uint64_t)(context->Message_Block[t8 + 1]) << 48) |
|
---|
| 896 | ((uint64_t)(context->Message_Block[t8 + 2]) << 40) |
|
---|
| 897 | ((uint64_t)(context->Message_Block[t8 + 3]) << 32) |
|
---|
| 898 | ((uint64_t)(context->Message_Block[t8 + 4]) << 24) |
|
---|
| 899 | ((uint64_t)(context->Message_Block[t8 + 5]) << 16) |
|
---|
| 900 | ((uint64_t)(context->Message_Block[t8 + 6]) << 8) |
|
---|
| 901 | ((uint64_t)(context->Message_Block[t8 + 7]));
|
---|
| 902 |
|
---|
| 903 | for (t = 16; t < 80; t++)
|
---|
| 904 | W[t] = SHA512_sigma1(W[t - 2]) + W[t - 7] +
|
---|
| 905 | SHA512_sigma0(W[t - 15]) + W[t - 16];
|
---|
| 906 |
|
---|
| 907 | A = context->Intermediate_Hash[0];
|
---|
| 908 | B = context->Intermediate_Hash[1];
|
---|
| 909 | C = context->Intermediate_Hash[2];
|
---|
| 910 | D = context->Intermediate_Hash[3];
|
---|
| 911 | E = context->Intermediate_Hash[4];
|
---|
| 912 | F = context->Intermediate_Hash[5];
|
---|
| 913 | G = context->Intermediate_Hash[6];
|
---|
| 914 | H = context->Intermediate_Hash[7];
|
---|
| 915 |
|
---|
| 916 | for (t = 0; t < 80; t++) {
|
---|
| 917 | temp1 = H + SHA512_SIGMA1(E) + SHA_Ch(E, F, G) + K[t] + W[t];
|
---|
| 918 | temp2 = SHA512_SIGMA0(A) + SHA_Maj(A, B, C);
|
---|
| 919 | H = G;
|
---|
| 920 | G = F;
|
---|
| 921 | F = E;
|
---|
| 922 | E = D + temp1;
|
---|
| 923 | D = C;
|
---|
| 924 | C = B;
|
---|
| 925 | B = A;
|
---|
| 926 | A = temp1 + temp2;
|
---|
| 927 | }
|
---|
| 928 |
|
---|
| 929 | context->Intermediate_Hash[0] += A;
|
---|
| 930 | context->Intermediate_Hash[1] += B;
|
---|
| 931 | context->Intermediate_Hash[2] += C;
|
---|
| 932 | context->Intermediate_Hash[3] += D;
|
---|
| 933 | context->Intermediate_Hash[4] += E;
|
---|
| 934 | context->Intermediate_Hash[5] += F;
|
---|
| 935 | context->Intermediate_Hash[6] += G;
|
---|
| 936 | context->Intermediate_Hash[7] += H;
|
---|
| 937 | #endif /* USE_32BIT_ONLY */
|
---|
| 938 |
|
---|
| 939 | context->Message_Block_Index = 0;
|
---|
| 940 | }
|
---|
| 941 |
|
---|
| 942 | /*
|
---|
| 943 | * SHA384_512Reset
|
---|
| 944 | *
|
---|
| 945 | * Description:
|
---|
| 946 | * This helper function will initialize the SHA512Context in
|
---|
| 947 | * preparation for computing a new SHA384 or SHA512 message
|
---|
| 948 | * digest.
|
---|
| 949 | *
|
---|
| 950 | * Parameters:
|
---|
| 951 | * context: [in/out]
|
---|
| 952 | * The context to reset.
|
---|
| 953 | * H0
|
---|
| 954 | * The initial hash value to use.
|
---|
| 955 | *
|
---|
| 956 | * Returns:
|
---|
| 957 | * sha Error Code.
|
---|
| 958 | *
|
---|
| 959 | */
|
---|
| 960 | #ifdef USE_32BIT_ONLY
|
---|
| 961 | static int SHA384_512Reset(SHA512Context *context, uint32_t H0[])
|
---|
| 962 | #else /* !USE_32BIT_ONLY */
|
---|
| 963 | static int SHA384_512Reset(SHA512Context *context, uint64_t H0[])
|
---|
| 964 | #endif /* USE_32BIT_ONLY */
|
---|
| 965 | {
|
---|
| 966 | int i;
|
---|
| 967 | if (!context)
|
---|
| 968 | return shaNull;
|
---|
| 969 |
|
---|
| 970 | context->Message_Block_Index = 0;
|
---|
| 971 |
|
---|
| 972 | #ifdef USE_32BIT_ONLY
|
---|
| 973 | context->Length[0] = context->Length[1] = 0;
|
---|
| 974 | context->Length[2] = context->Length[3] = 0;
|
---|
| 975 |
|
---|
| 976 | for (i = 0; i < SHA512HashSize / 4; i++)
|
---|
| 977 | context->Intermediate_Hash[i] = H0[i];
|
---|
| 978 | #else /* !USE_32BIT_ONLY */
|
---|
| 979 | context->Length_High = context->Length_Low = 0;
|
---|
| 980 |
|
---|
| 981 | for (i = 0; i < SHA512HashSize / 8; i++)
|
---|
| 982 | context->Intermediate_Hash[i] = H0[i];
|
---|
| 983 | #endif /* USE_32BIT_ONLY */
|
---|
| 984 |
|
---|
| 985 | context->Computed = 0;
|
---|
| 986 | context->Corrupted = 0;
|
---|
| 987 |
|
---|
| 988 | return shaSuccess;
|
---|
| 989 | }
|
---|
| 990 |
|
---|
| 991 | /*
|
---|
| 992 | * SHA384_512ResultN
|
---|
| 993 | *
|
---|
| 994 | * Description:
|
---|
| 995 | * This helper function will return the 384-bit or 512-bit message
|
---|
| 996 | * digest into the Message_Digest array provided by the caller.
|
---|
| 997 | * NOTE: The first octet of hash is stored in the 0th element,
|
---|
| 998 | * the last octet of hash in the 48th/64th element.
|
---|
| 999 | *
|
---|
| 1000 | * Parameters:
|
---|
| 1001 | * context: [in/out]
|
---|
| 1002 | * The context to use to calculate the SHA hash.
|
---|
| 1003 | * Message_Digest: [out]
|
---|
| 1004 | * Where the digest is returned.
|
---|
| 1005 | * HashSize: [in]
|
---|
| 1006 | * The size of the hash, either 48 or 64.
|
---|
| 1007 | *
|
---|
| 1008 | * Returns:
|
---|
| 1009 | * sha Error Code.
|
---|
| 1010 | *
|
---|
| 1011 | */
|
---|
| 1012 | static int SHA384_512ResultN(SHA512Context *context,
|
---|
| 1013 | uint8_t Message_Digest[], int HashSize)
|
---|
| 1014 | {
|
---|
| 1015 | int i;
|
---|
| 1016 |
|
---|
| 1017 | #ifdef USE_32BIT_ONLY
|
---|
| 1018 | int i2;
|
---|
| 1019 | #endif /* USE_32BIT_ONLY */
|
---|
| 1020 |
|
---|
| 1021 | if (!context || !Message_Digest)
|
---|
| 1022 | return shaNull;
|
---|
| 1023 |
|
---|
| 1024 | if (context->Corrupted)
|
---|
| 1025 | return context->Corrupted;
|
---|
| 1026 |
|
---|
| 1027 | if (!context->Computed)
|
---|
| 1028 | SHA384_512Finalize(context, 0x80);
|
---|
| 1029 |
|
---|
| 1030 | #ifdef USE_32BIT_ONLY
|
---|
| 1031 | for (i = i2 = 0; i < HashSize;) {
|
---|
| 1032 | Message_Digest[i++] = (uint8_t)(context->Intermediate_Hash[i2] >> 24);
|
---|
| 1033 | Message_Digest[i++] = (uint8_t)(context->Intermediate_Hash[i2] >> 16);
|
---|
| 1034 | Message_Digest[i++] = (uint8_t)(context->Intermediate_Hash[i2] >> 8);
|
---|
| 1035 | Message_Digest[i++] = (uint8_t)(context->Intermediate_Hash[i2++]);
|
---|
| 1036 | Message_Digest[i++] = (uint8_t)(context->Intermediate_Hash[i2] >> 24);
|
---|
| 1037 | Message_Digest[i++] = (uint8_t)(context->Intermediate_Hash[i2] >> 16);
|
---|
| 1038 | Message_Digest[i++] = (uint8_t)(context->Intermediate_Hash[i2] >> 8);
|
---|
| 1039 | Message_Digest[i++] = (uint8_t)(context->Intermediate_Hash[i2++]);
|
---|
| 1040 | }
|
---|
| 1041 | #else /* !USE_32BIT_ONLY */
|
---|
| 1042 | for (i = 0; i < HashSize; ++i)
|
---|
| 1043 | Message_Digest[i] = (uint8_t)
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| 1044 | (context->Intermediate_Hash[i >> 3] >> 8 * (7 - (i % 8)));
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| 1045 | #endif /* USE_32BIT_ONLY */
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| 1046 |
|
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| 1047 | return shaSuccess;
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| 1048 | }
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| 1049 |
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