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util-src/hashes.c @ 12560:1e41dd0f8353
util.hashes: Refactor HMAC bindings (fixes #1589)
HMAC() is deprecated
As with the regular hash functions, macros like this make it awkward to
apply static analysis and code formatting.
author | Kim Alvefur <zash@zash.se> |
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date | Sun, 29 Nov 2020 17:58:30 +0100 (2020-11-29) |
parent | 12559:865631ebb9f2 |
child | 12561:adfb46a3e8a7 |
rev | line source |
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1 /* Prosody IM |
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2 -- Copyright (C) 2009-2010 Matthew Wild |
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3 -- Copyright (C) 2009-2010 Waqas Hussain |
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4 -- |
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5 -- This project is MIT/X11 licensed. Please see the |
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6 -- COPYING file in the source package for more information. |
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7 -- |
520 | 8 */ |
9 | |
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10 /* |
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11 * hashes.c |
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12 * Lua library for sha1, sha256 and md5 hashes |
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13 */ |
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14 |
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15 #include <string.h> |
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16 #include <stdlib.h> |
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17 |
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18 #ifdef _MSC_VER |
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19 typedef unsigned __int32 uint32_t; |
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20 #else |
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21 #include <inttypes.h> |
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22 #endif |
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23 |
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24 #include "lua.h" |
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25 #include "lauxlib.h" |
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26 #include <openssl/crypto.h> |
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27 #include <openssl/sha.h> |
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28 #include <openssl/md5.h> |
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29 #include <openssl/hmac.h> |
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30 #include <openssl/evp.h> |
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31 |
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32 #if (LUA_VERSION_NUM == 501) |
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33 #define luaL_setfuncs(L, R, N) luaL_register(L, NULL, R) |
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34 #endif |
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35 |
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36 #define HMAC_IPAD 0x36363636 |
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37 #define HMAC_OPAD 0x5c5c5c5c |
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38 |
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39 static const char *hex_tab = "0123456789abcdef"; |
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40 static void toHex(const unsigned char *in, int length, unsigned char *out) { |
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41 int i; |
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42 |
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43 for(i = 0; i < length; i++) { |
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44 out[i * 2] = hex_tab[(in[i] >> 4) & 0xF]; |
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45 out[i * 2 + 1] = hex_tab[(in[i]) & 0xF]; |
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46 } |
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47 } |
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48 |
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49 static int Levp_hash(lua_State *L, const EVP_MD *evp) { |
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50 size_t len; |
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51 unsigned int size = EVP_MAX_MD_SIZE; |
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52 const char *s = luaL_checklstring(L, 1, &len); |
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53 int hex_out = lua_toboolean(L, 2); |
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54 |
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55 unsigned char hash[EVP_MAX_MD_SIZE], result[EVP_MAX_MD_SIZE * 2]; |
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56 |
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57 EVP_MD_CTX *ctx = EVP_MD_CTX_new(); |
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58 |
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59 if(ctx == NULL) { |
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60 goto fail; |
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61 } |
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62 |
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63 if(!EVP_DigestInit_ex(ctx, evp, NULL)) { |
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64 goto fail; |
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65 } |
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66 |
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67 if(!EVP_DigestUpdate(ctx, s, len)) { |
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68 goto fail; |
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69 } |
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70 |
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71 if(!EVP_DigestFinal_ex(ctx, hash, &size)) { |
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72 goto fail; |
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73 } |
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74 |
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75 EVP_MD_CTX_free(ctx); |
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76 |
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77 if(hex_out) { |
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78 toHex(hash, size, result); |
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79 lua_pushlstring(L, (char *)result, size * 2); |
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80 } else { |
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81 lua_pushlstring(L, (char *)hash, size); |
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82 } |
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83 |
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84 return 1; |
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85 |
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86 fail: |
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87 EVP_MD_CTX_free(ctx); |
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88 return luaL_error(L, "hash function failed"); |
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89 } |
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90 |
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91 static int Lsha1(lua_State *L) { |
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92 return Levp_hash(L, EVP_sha1()); |
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93 } |
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94 |
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95 static int Lsha224(lua_State *L) { |
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96 return Levp_hash(L, EVP_sha224()); |
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97 } |
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98 |
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99 static int Lsha256(lua_State *L) { |
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100 return Levp_hash(L, EVP_sha256()); |
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101 } |
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102 |
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103 static int Lsha384(lua_State *L) { |
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104 return Levp_hash(L, EVP_sha384()); |
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105 } |
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106 |
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107 static int Lsha512(lua_State *L) { |
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108 return Levp_hash(L, EVP_sha512()); |
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109 } |
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110 |
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111 static int Lmd5(lua_State *L) { |
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112 return Levp_hash(L, EVP_md5()); |
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113 } |
766
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Licensing/version updates for some files (forgot to commit, doh...)
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114 |
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115 struct hash_desc { |
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116 int (*Init)(void *); |
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117 int (*Update)(void *, const void *, size_t); |
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118 int (*Final)(unsigned char *, void *); |
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119 size_t digestLength; |
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120 void *ctx, *ctxo; |
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121 }; |
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122 |
12560
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123 static int Levp_hmac(lua_State *L, const EVP_MD *evp) { |
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124 unsigned char hash[EVP_MAX_MD_SIZE], result[EVP_MAX_MD_SIZE * 2]; |
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125 size_t key_len, msg_len; |
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126 size_t out_len = EVP_MAX_MD_SIZE; |
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127 const char *key = luaL_checklstring(L, 1, &key_len); |
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128 const char *msg = luaL_checklstring(L, 2, &msg_len); |
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129 const int hex_out = lua_toboolean(L, 3); |
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130 |
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131 EVP_PKEY *pkey = EVP_PKEY_new_raw_private_key(EVP_PKEY_HMAC, NULL, (unsigned char *)key, key_len); |
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132 EVP_MD_CTX *ctx = EVP_MD_CTX_new(); |
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133 |
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134 if(ctx == NULL || pkey == NULL) { |
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135 goto fail; |
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136 } |
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137 |
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138 if(!EVP_DigestSignInit(ctx, NULL, evp, NULL, pkey)) { |
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139 goto fail; |
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140 } |
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141 |
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142 if(!EVP_DigestSignUpdate(ctx, msg, msg_len)) { |
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143 goto fail; |
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144 } |
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145 |
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146 if(!EVP_DigestSignFinal(ctx, hash, &out_len)) { |
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147 goto fail; |
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148 } |
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149 |
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150 EVP_MD_CTX_free(ctx); |
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151 EVP_PKEY_free(pkey); |
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152 |
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153 if(hex_out) { |
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154 toHex(hash, out_len, result); |
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155 lua_pushlstring(L, (char *)result, out_len * 2); |
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156 } else { |
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157 lua_pushlstring(L, (char *)hash, out_len); |
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158 } |
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159 |
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160 return 1; |
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161 |
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162 fail: |
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163 EVP_MD_CTX_free(ctx); |
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164 EVP_PKEY_free(pkey); |
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165 return luaL_error(L, "hash function failed"); |
5537
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4829
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166 } |
15464633d8fb
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167 |
12560
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168 static int Lhmac_sha1(lua_State *L) { |
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169 return Levp_hmac(L, EVP_sha1()); |
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170 } |
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171 |
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172 static int Lhmac_sha256(lua_State *L) { |
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173 return Levp_hmac(L, EVP_sha256()); |
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174 } |
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175 |
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176 static int Lhmac_sha512(lua_State *L) { |
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177 return Levp_hmac(L, EVP_sha512()); |
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178 } |
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179 |
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180 static int Lhmac_md5(lua_State *L) { |
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181 return Levp_hmac(L, EVP_md5()); |
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182 } |
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183 |
5537
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184 |
9967
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util.hashes: Rename PBKDF2 function
Kim Alvefur <zash@zash.se>
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diff
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|
185 static int Lpbkdf2_sha1(lua_State *L) { |
9970
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Backed out changeset 61bc5c52c941
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|
186 unsigned char out[SHA_DIGEST_LENGTH]; |
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Backed out changeset 61bc5c52c941
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187 |
9965
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188 size_t pass_len, salt_len; |
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189 const char *pass = luaL_checklstring(L, 1, &pass_len); |
d8e645b4d195
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190 const unsigned char *salt = (unsigned char *)luaL_checklstring(L, 2, &salt_len); |
5538
62089c9c142d
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Florian Zeitz <florob@babelmonkeys.de>
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191 const int iter = luaL_checkinteger(L, 3); |
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192 |
9970
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193 if(PKCS5_PBKDF2_HMAC(pass, pass_len, salt, salt_len, iter, EVP_sha1(), SHA_DIGEST_LENGTH, out) == 0) { |
9965
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194 return luaL_error(L, "PKCS5_PBKDF2_HMAC() failed"); |
6615
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util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
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195 } |
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196 |
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Backed out changeset 61bc5c52c941
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197 lua_pushlstring(L, (char *)out, SHA_DIGEST_LENGTH); |
5538
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198 |
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199 return 1; |
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200 } |
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201 |
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202 |
9968
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util.hashes: Add PBKDF2-HMAC-SHA256
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203 static int Lpbkdf2_sha256(lua_State *L) { |
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Backed out changeset 61bc5c52c941
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changeset
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204 unsigned char out[SHA256_DIGEST_LENGTH]; |
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205 |
9968
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changeset
|
206 size_t pass_len, salt_len; |
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changeset
|
207 const char *pass = luaL_checklstring(L, 1, &pass_len); |
d536796a305f
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208 const unsigned char *salt = (unsigned char *)luaL_checklstring(L, 2, &salt_len); |
d536796a305f
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Kim Alvefur <zash@zash.se>
parents:
9967
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209 const int iter = luaL_checkinteger(L, 3); |
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210 |
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211 if(PKCS5_PBKDF2_HMAC(pass, pass_len, salt, salt_len, iter, EVP_sha256(), SHA256_DIGEST_LENGTH, out) == 0) { |
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212 return luaL_error(L, "PKCS5_PBKDF2_HMAC() failed"); |
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213 } |
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214 |
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215 lua_pushlstring(L, (char *)out, SHA256_DIGEST_LENGTH); |
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216 return 1; |
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217 } |
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218 |
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219 static int Lhash_equals(lua_State *L) { |
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220 size_t len1, len2; |
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221 const char *s1 = luaL_checklstring(L, 1, &len1); |
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222 const char *s2 = luaL_checklstring(L, 2, &len2); |
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223 if(len1 == len2) { |
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224 lua_pushboolean(L, CRYPTO_memcmp(s1, s2, len1) == 0); |
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225 } else { |
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226 lua_pushboolean(L, 0); |
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227 } |
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228 return 1; |
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229 } |
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230 |
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231 static const luaL_Reg Reg[] = { |
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232 { "sha1", Lsha1 }, |
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233 { "sha224", Lsha224 }, |
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234 { "sha256", Lsha256 }, |
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235 { "sha384", Lsha384 }, |
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236 { "sha512", Lsha512 }, |
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237 { "md5", Lmd5 }, |
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238 { "hmac_sha1", Lhmac_sha1 }, |
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239 { "hmac_sha256", Lhmac_sha256 }, |
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240 { "hmac_sha512", Lhmac_sha512 }, |
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241 { "hmac_md5", Lhmac_md5 }, |
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242 { "scram_Hi_sha1", Lpbkdf2_sha1 }, /* COMPAT */ |
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243 { "pbkdf2_hmac_sha1", Lpbkdf2_sha1 }, |
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244 { "pbkdf2_hmac_sha256", Lpbkdf2_sha256 }, |
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245 { "equals", Lhash_equals }, |
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246 { NULL, NULL } |
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247 }; |
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248 |
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249 LUALIB_API int luaopen_util_hashes(lua_State *L) { |
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250 #if (LUA_VERSION_NUM > 501) |
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251 luaL_checkversion(L); |
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252 #endif |
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253 lua_newtable(L); |
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254 luaL_setfuncs(L, Reg, 0); |
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255 lua_pushliteral(L, "-3.14"); |
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256 lua_setfield(L, -2, "version"); |
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257 #ifdef OPENSSL_VERSION |
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258 lua_pushstring(L, OpenSSL_version(OPENSSL_VERSION)); |
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259 lua_setfield(L, -2, "_LIBCRYPTO_VERSION"); |
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260 #endif |
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261 return 1; |
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262 } |