1 | /* $Id: openssl-sha256.cpp 76553 2019-01-01 01:45:53Z vboxsync $ */
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2 | /** @file
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3 | * IPRT - SHA-256 hash functions.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2009-2019 Oracle Corporation
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8 | *
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9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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10 | * available from http://www.virtualbox.org. This file is free software;
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11 | * you can redistribute it and/or modify it under the terms of the GNU
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12 | * General Public License (GPL) as published by the Free Software
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13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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16 | *
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17 | * The contents of this file may alternatively be used under the terms
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18 | * of the Common Development and Distribution License Version 1.0
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19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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20 | * VirtualBox OSE distribution, in which case the provisions of the
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21 | * CDDL are applicable instead of those of the GPL.
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22 | *
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23 | * You may elect to license modified versions of this file under the
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24 | * terms and conditions of either the GPL or the CDDL or both.
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25 | */
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26 |
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27 |
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28 | /*********************************************************************************************************************************
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29 | * Header Files *
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30 | *********************************************************************************************************************************/
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31 | #include "internal/iprt.h"
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32 |
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33 | #include <openssl/sha.h>
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34 |
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35 | #define RT_SHA256_PRIVATE_CONTEXT
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36 | #include <iprt/sha.h>
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37 |
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38 | #include <iprt/assert.h>
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39 | #include <iprt/string.h>
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40 |
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41 |
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42 | AssertCompile(RT_SIZEOFMEMB(RTSHA256CONTEXT, abPadding) >= RT_SIZEOFMEMB(RTSHA256CONTEXT, Private));
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43 |
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44 |
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45 | RTDECL(void) RTSha256(const void *pvBuf, size_t cbBuf, uint8_t pabDigest[RTSHA256_HASH_SIZE])
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46 | {
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47 | RTSHA256CONTEXT Ctx;
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48 | RTSha256Init(&Ctx);
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49 | RTSha256Update(&Ctx, pvBuf, cbBuf);
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50 | RTSha256Final(&Ctx, pabDigest);
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51 | }
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52 | RT_EXPORT_SYMBOL(RTSha256);
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53 |
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54 |
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55 | RTDECL(bool) RTSha256Check(const void *pvBuf, size_t cbBuf, uint8_t const pabDigest[RTSHA256_HASH_SIZE])
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56 | {
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57 | RTSHA256CONTEXT Ctx;
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58 | RTSha256Init(&Ctx);
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59 | RTSha256Update(&Ctx, pvBuf, cbBuf);
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60 | uint8_t abActualDigest[RTSHA256_HASH_SIZE];
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61 | RTSha256Final(&Ctx, abActualDigest);
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62 | bool fRet = memcmp(pabDigest, abActualDigest, RTSHA256_HASH_SIZE) == 0;
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63 | RT_ZERO(abActualDigest);
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64 | return fRet;
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65 | }
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66 | RT_EXPORT_SYMBOL(RTSha256Check);
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67 |
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68 |
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69 | RTDECL(void) RTSha256Init(PRTSHA256CONTEXT pCtx)
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70 | {
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71 | SHA256_Init(&pCtx->Private);
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72 | }
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73 | RT_EXPORT_SYMBOL(RTSha256Init);
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74 |
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75 |
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76 | RTDECL(void) RTSha256Update(PRTSHA256CONTEXT pCtx, const void *pvBuf, size_t cbBuf)
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77 | {
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78 | SHA256_Update(&pCtx->Private, pvBuf, cbBuf);
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79 | }
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80 | RT_EXPORT_SYMBOL(RTSha256Update);
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81 |
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82 |
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83 | RTDECL(void) RTSha256Final(PRTSHA256CONTEXT pCtx, uint8_t pabDigest[32])
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84 | {
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85 | SHA256_Final((unsigned char *)&pabDigest[0], &pCtx->Private);
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86 | }
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87 | RT_EXPORT_SYMBOL(RTSha256Final);
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88 |
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89 |
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90 | /*
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91 | * We have to expose the same API as alt-sha256.cpp, so the SHA-224
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92 | * implementation also lives here. (SHA-224 is just a truncated SHA-256 with
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93 | * different initial values.)
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94 | */
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95 | RTDECL(void) RTSha224(const void *pvBuf, size_t cbBuf, uint8_t pabDigest[RTSHA224_HASH_SIZE])
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96 | {
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97 | RTSHA224CONTEXT Ctx;
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98 | RTSha224Init(&Ctx);
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99 | RTSha224Update(&Ctx, pvBuf, cbBuf);
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100 | RTSha224Final(&Ctx, pabDigest);
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101 | }
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102 | RT_EXPORT_SYMBOL(RTSha224);
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103 |
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104 |
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105 | RTDECL(bool) RTSha224Check(const void *pvBuf, size_t cbBuf, uint8_t const pabDigest[RTSHA224_HASH_SIZE])
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106 | {
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107 | RTSHA224CONTEXT Ctx;
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108 | RTSha224Init(&Ctx);
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109 | RTSha224Update(&Ctx, pvBuf, cbBuf);
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110 | uint8_t abActualDigest[RTSHA224_HASH_SIZE];
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111 | RTSha224Final(&Ctx, abActualDigest);
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112 | bool fRet = memcmp(pabDigest, abActualDigest, RTSHA224_HASH_SIZE) == 0;
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113 | RT_ZERO(abActualDigest);
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114 | return fRet;
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115 | }
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116 | RT_EXPORT_SYMBOL(RTSha224Check);
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117 |
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118 |
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119 | RTDECL(void) RTSha224Init(PRTSHA224CONTEXT pCtx)
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120 | {
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121 | SHA224_Init(&pCtx->Private);
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122 | }
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123 | RT_EXPORT_SYMBOL(RTSha224Init);
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124 |
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125 |
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126 | RTDECL(void) RTSha224Update(PRTSHA224CONTEXT pCtx, const void *pvBuf, size_t cbBuf)
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127 | {
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128 | SHA224_Update(&pCtx->Private, pvBuf, cbBuf);
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129 | }
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130 | RT_EXPORT_SYMBOL(RTSha224Update);
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131 |
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132 |
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133 | RTDECL(void) RTSha224Final(PRTSHA224CONTEXT pCtx, uint8_t pabDigest[32])
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134 | {
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135 | SHA224_Final((unsigned char *)&pabDigest[0], &pCtx->Private);
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136 | }
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137 | RT_EXPORT_SYMBOL(RTSha224Final);
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138 |
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