Xuyi Wang
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wolfSSL
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wolfcrypt/src/pwdbased.c@15:117db924cf7c, 2018-08-18 (annotated)
- Committer:
- wolfSSL
- Date:
- Sat Aug 18 22:20:43 2018 +0000
- Revision:
- 15:117db924cf7c
wolfSSL 3.15.3
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| wolfSSL | 15:117db924cf7c | 1 | /* pwdbased.c |
| wolfSSL | 15:117db924cf7c | 2 | * |
| wolfSSL | 15:117db924cf7c | 3 | * Copyright (C) 2006-2017 wolfSSL Inc. |
| wolfSSL | 15:117db924cf7c | 4 | * |
| wolfSSL | 15:117db924cf7c | 5 | * This file is part of wolfSSL. |
| wolfSSL | 15:117db924cf7c | 6 | * |
| wolfSSL | 15:117db924cf7c | 7 | * wolfSSL is free software; you can redistribute it and/or modify |
| wolfSSL | 15:117db924cf7c | 8 | * it under the terms of the GNU General Public License as published by |
| wolfSSL | 15:117db924cf7c | 9 | * the Free Software Foundation; either version 2 of the License, or |
| wolfSSL | 15:117db924cf7c | 10 | * (at your option) any later version. |
| wolfSSL | 15:117db924cf7c | 11 | * |
| wolfSSL | 15:117db924cf7c | 12 | * wolfSSL is distributed in the hope that it will be useful, |
| wolfSSL | 15:117db924cf7c | 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| wolfSSL | 15:117db924cf7c | 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| wolfSSL | 15:117db924cf7c | 15 | * GNU General Public License for more details. |
| wolfSSL | 15:117db924cf7c | 16 | * |
| wolfSSL | 15:117db924cf7c | 17 | * You should have received a copy of the GNU General Public License |
| wolfSSL | 15:117db924cf7c | 18 | * along with this program; if not, write to the Free Software |
| wolfSSL | 15:117db924cf7c | 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA |
| wolfSSL | 15:117db924cf7c | 20 | */ |
| wolfSSL | 15:117db924cf7c | 21 | |
| wolfSSL | 15:117db924cf7c | 22 | |
| wolfSSL | 15:117db924cf7c | 23 | #ifdef HAVE_CONFIG_H |
| wolfSSL | 15:117db924cf7c | 24 | #include <config.h> |
| wolfSSL | 15:117db924cf7c | 25 | #endif |
| wolfSSL | 15:117db924cf7c | 26 | |
| wolfSSL | 15:117db924cf7c | 27 | #include <wolfssl/wolfcrypt/settings.h> |
| wolfSSL | 15:117db924cf7c | 28 | |
| wolfSSL | 15:117db924cf7c | 29 | #ifndef NO_PWDBASED |
| wolfSSL | 15:117db924cf7c | 30 | |
| wolfSSL | 15:117db924cf7c | 31 | #include <wolfssl/wolfcrypt/pwdbased.h> |
| wolfSSL | 15:117db924cf7c | 32 | #include <wolfssl/wolfcrypt/hmac.h> |
| wolfSSL | 15:117db924cf7c | 33 | #include <wolfssl/wolfcrypt/hash.h> |
| wolfSSL | 15:117db924cf7c | 34 | #include <wolfssl/wolfcrypt/integer.h> |
| wolfSSL | 15:117db924cf7c | 35 | #include <wolfssl/wolfcrypt/error-crypt.h> |
| wolfSSL | 15:117db924cf7c | 36 | |
| wolfSSL | 15:117db924cf7c | 37 | #ifdef NO_INLINE |
| wolfSSL | 15:117db924cf7c | 38 | #include <wolfssl/wolfcrypt/misc.h> |
| wolfSSL | 15:117db924cf7c | 39 | #else |
| wolfSSL | 15:117db924cf7c | 40 | #define WOLFSSL_MISC_INCLUDED |
| wolfSSL | 15:117db924cf7c | 41 | #include <wolfcrypt/src/misc.c> |
| wolfSSL | 15:117db924cf7c | 42 | #endif |
| wolfSSL | 15:117db924cf7c | 43 | |
| wolfSSL | 15:117db924cf7c | 44 | |
| wolfSSL | 15:117db924cf7c | 45 | /* PKCS#5 v1.5 with non standard extension to optionally derive the extra data (IV) */ |
| wolfSSL | 15:117db924cf7c | 46 | int wc_PBKDF1_ex(byte* key, int keyLen, byte* iv, int ivLen, |
| wolfSSL | 15:117db924cf7c | 47 | const byte* passwd, int passwdLen, const byte* salt, int saltLen, |
| wolfSSL | 15:117db924cf7c | 48 | int iterations, int hashType, void* heap) |
| wolfSSL | 15:117db924cf7c | 49 | { |
| wolfSSL | 15:117db924cf7c | 50 | int err; |
| wolfSSL | 15:117db924cf7c | 51 | int keyLeft, ivLeft, i; |
| wolfSSL | 15:117db924cf7c | 52 | int digestLeft, store; |
| wolfSSL | 15:117db924cf7c | 53 | int keyOutput = 0; |
| wolfSSL | 15:117db924cf7c | 54 | int diestLen; |
| wolfSSL | 15:117db924cf7c | 55 | byte digest[WC_MAX_DIGEST_SIZE]; |
| wolfSSL | 15:117db924cf7c | 56 | #ifdef WOLFSSL_SMALL_STACK |
| wolfSSL | 15:117db924cf7c | 57 | wc_HashAlg* hash = NULL; |
| wolfSSL | 15:117db924cf7c | 58 | #else |
| wolfSSL | 15:117db924cf7c | 59 | wc_HashAlg hash[1]; |
| wolfSSL | 15:117db924cf7c | 60 | #endif |
| wolfSSL | 15:117db924cf7c | 61 | enum wc_HashType hashT; |
| wolfSSL | 15:117db924cf7c | 62 | |
| wolfSSL | 15:117db924cf7c | 63 | (void)heap; |
| wolfSSL | 15:117db924cf7c | 64 | |
| wolfSSL | 15:117db924cf7c | 65 | if (key == NULL || keyLen < 0 || passwdLen < 0 || saltLen < 0 || ivLen < 0){ |
| wolfSSL | 15:117db924cf7c | 66 | return BAD_FUNC_ARG; |
| wolfSSL | 15:117db924cf7c | 67 | } |
| wolfSSL | 15:117db924cf7c | 68 | |
| wolfSSL | 15:117db924cf7c | 69 | if (iterations <= 0) |
| wolfSSL | 15:117db924cf7c | 70 | iterations = 1; |
| wolfSSL | 15:117db924cf7c | 71 | |
| wolfSSL | 15:117db924cf7c | 72 | hashT = wc_HashTypeConvert(hashType); |
| wolfSSL | 15:117db924cf7c | 73 | err = wc_HashGetDigestSize(hashT); |
| wolfSSL | 15:117db924cf7c | 74 | if (err < 0) |
| wolfSSL | 15:117db924cf7c | 75 | return err; |
| wolfSSL | 15:117db924cf7c | 76 | diestLen = err; |
| wolfSSL | 15:117db924cf7c | 77 | |
| wolfSSL | 15:117db924cf7c | 78 | /* initialize hash */ |
| wolfSSL | 15:117db924cf7c | 79 | #ifdef WOLFSSL_SMALL_STACK |
| wolfSSL | 15:117db924cf7c | 80 | hash = (wc_HashAlg*)XMALLOC(sizeof(wc_HashAlg), heap, |
| wolfSSL | 15:117db924cf7c | 81 | DYNAMIC_TYPE_HASHCTX); |
| wolfSSL | 15:117db924cf7c | 82 | if (hash == NULL) |
| wolfSSL | 15:117db924cf7c | 83 | return MEMORY_E; |
| wolfSSL | 15:117db924cf7c | 84 | #endif |
| wolfSSL | 15:117db924cf7c | 85 | |
| wolfSSL | 15:117db924cf7c | 86 | err = wc_HashInit(hash, hashT); |
| wolfSSL | 15:117db924cf7c | 87 | if (err != 0) { |
| wolfSSL | 15:117db924cf7c | 88 | #ifdef WOLFSSL_SMALL_STACK |
| wolfSSL | 15:117db924cf7c | 89 | XFREE(hash, heap, DYNAMIC_TYPE_HASHCTX); |
| wolfSSL | 15:117db924cf7c | 90 | #endif |
| wolfSSL | 15:117db924cf7c | 91 | return err; |
| wolfSSL | 15:117db924cf7c | 92 | } |
| wolfSSL | 15:117db924cf7c | 93 | |
| wolfSSL | 15:117db924cf7c | 94 | keyLeft = keyLen; |
| wolfSSL | 15:117db924cf7c | 95 | ivLeft = ivLen; |
| wolfSSL | 15:117db924cf7c | 96 | while (keyOutput < (keyLen + ivLen)) { |
| wolfSSL | 15:117db924cf7c | 97 | digestLeft = diestLen; |
| wolfSSL | 15:117db924cf7c | 98 | /* D_(i - 1) */ |
| wolfSSL | 15:117db924cf7c | 99 | if (keyOutput) { /* first time D_0 is empty */ |
| wolfSSL | 15:117db924cf7c | 100 | err = wc_HashUpdate(hash, hashT, digest, diestLen); |
| wolfSSL | 15:117db924cf7c | 101 | if (err != 0) break; |
| wolfSSL | 15:117db924cf7c | 102 | } |
| wolfSSL | 15:117db924cf7c | 103 | |
| wolfSSL | 15:117db924cf7c | 104 | /* data */ |
| wolfSSL | 15:117db924cf7c | 105 | err = wc_HashUpdate(hash, hashT, passwd, passwdLen); |
| wolfSSL | 15:117db924cf7c | 106 | if (err != 0) break; |
| wolfSSL | 15:117db924cf7c | 107 | |
| wolfSSL | 15:117db924cf7c | 108 | /* salt */ |
| wolfSSL | 15:117db924cf7c | 109 | if (salt) { |
| wolfSSL | 15:117db924cf7c | 110 | err = wc_HashUpdate(hash, hashT, salt, saltLen); |
| wolfSSL | 15:117db924cf7c | 111 | if (err != 0) break; |
| wolfSSL | 15:117db924cf7c | 112 | } |
| wolfSSL | 15:117db924cf7c | 113 | |
| wolfSSL | 15:117db924cf7c | 114 | err = wc_HashFinal(hash, hashT, digest); |
| wolfSSL | 15:117db924cf7c | 115 | if (err != 0) break; |
| wolfSSL | 15:117db924cf7c | 116 | |
| wolfSSL | 15:117db924cf7c | 117 | /* count */ |
| wolfSSL | 15:117db924cf7c | 118 | for (i = 1; i < iterations; i++) { |
| wolfSSL | 15:117db924cf7c | 119 | err = wc_HashUpdate(hash, hashT, digest, diestLen); |
| wolfSSL | 15:117db924cf7c | 120 | if (err != 0) break; |
| wolfSSL | 15:117db924cf7c | 121 | |
| wolfSSL | 15:117db924cf7c | 122 | err = wc_HashFinal(hash, hashT, digest); |
| wolfSSL | 15:117db924cf7c | 123 | if (err != 0) break; |
| wolfSSL | 15:117db924cf7c | 124 | } |
| wolfSSL | 15:117db924cf7c | 125 | |
| wolfSSL | 15:117db924cf7c | 126 | if (keyLeft) { |
| wolfSSL | 15:117db924cf7c | 127 | store = min(keyLeft, diestLen); |
| wolfSSL | 15:117db924cf7c | 128 | XMEMCPY(&key[keyLen - keyLeft], digest, store); |
| wolfSSL | 15:117db924cf7c | 129 | |
| wolfSSL | 15:117db924cf7c | 130 | keyOutput += store; |
| wolfSSL | 15:117db924cf7c | 131 | keyLeft -= store; |
| wolfSSL | 15:117db924cf7c | 132 | digestLeft -= store; |
| wolfSSL | 15:117db924cf7c | 133 | } |
| wolfSSL | 15:117db924cf7c | 134 | |
| wolfSSL | 15:117db924cf7c | 135 | if (ivLeft && digestLeft) { |
| wolfSSL | 15:117db924cf7c | 136 | store = min(ivLeft, digestLeft); |
| wolfSSL | 15:117db924cf7c | 137 | if (iv != NULL) |
| wolfSSL | 15:117db924cf7c | 138 | XMEMCPY(&iv[ivLen - ivLeft], |
| wolfSSL | 15:117db924cf7c | 139 | &digest[diestLen - digestLeft], store); |
| wolfSSL | 15:117db924cf7c | 140 | keyOutput += store; |
| wolfSSL | 15:117db924cf7c | 141 | ivLeft -= store; |
| wolfSSL | 15:117db924cf7c | 142 | } |
| wolfSSL | 15:117db924cf7c | 143 | } |
| wolfSSL | 15:117db924cf7c | 144 | |
| wolfSSL | 15:117db924cf7c | 145 | #ifdef WOLFSSL_SMALL_STACK |
| wolfSSL | 15:117db924cf7c | 146 | XFREE(hash, heap, DYNAMIC_TYPE_HASHCTX); |
| wolfSSL | 15:117db924cf7c | 147 | #endif |
| wolfSSL | 15:117db924cf7c | 148 | |
| wolfSSL | 15:117db924cf7c | 149 | if (err != 0) |
| wolfSSL | 15:117db924cf7c | 150 | return err; |
| wolfSSL | 15:117db924cf7c | 151 | |
| wolfSSL | 15:117db924cf7c | 152 | if (keyOutput != (keyLen + ivLen)) |
| wolfSSL | 15:117db924cf7c | 153 | return BUFFER_E; |
| wolfSSL | 15:117db924cf7c | 154 | |
| wolfSSL | 15:117db924cf7c | 155 | return err; |
| wolfSSL | 15:117db924cf7c | 156 | } |
| wolfSSL | 15:117db924cf7c | 157 | |
| wolfSSL | 15:117db924cf7c | 158 | /* PKCS#5 v1.5 */ |
| wolfSSL | 15:117db924cf7c | 159 | int wc_PBKDF1(byte* output, const byte* passwd, int pLen, const byte* salt, |
| wolfSSL | 15:117db924cf7c | 160 | int sLen, int iterations, int kLen, int hashType) |
| wolfSSL | 15:117db924cf7c | 161 | { |
| wolfSSL | 15:117db924cf7c | 162 | return wc_PBKDF1_ex(output, kLen, NULL, 0, |
| wolfSSL | 15:117db924cf7c | 163 | passwd, pLen, salt, sLen, iterations, hashType, NULL); |
| wolfSSL | 15:117db924cf7c | 164 | } |
| wolfSSL | 15:117db924cf7c | 165 | |
| wolfSSL | 15:117db924cf7c | 166 | |
| wolfSSL | 15:117db924cf7c | 167 | int wc_PBKDF2(byte* output, const byte* passwd, int pLen, const byte* salt, |
| wolfSSL | 15:117db924cf7c | 168 | int sLen, int iterations, int kLen, int hashType) |
| wolfSSL | 15:117db924cf7c | 169 | { |
| wolfSSL | 15:117db924cf7c | 170 | word32 i = 1; |
| wolfSSL | 15:117db924cf7c | 171 | int hLen; |
| wolfSSL | 15:117db924cf7c | 172 | int j, ret; |
| wolfSSL | 15:117db924cf7c | 173 | #ifdef WOLFSSL_SMALL_STACK |
| wolfSSL | 15:117db924cf7c | 174 | byte* buffer; |
| wolfSSL | 15:117db924cf7c | 175 | Hmac* hmac; |
| wolfSSL | 15:117db924cf7c | 176 | #else |
| wolfSSL | 15:117db924cf7c | 177 | byte buffer[WC_MAX_DIGEST_SIZE]; |
| wolfSSL | 15:117db924cf7c | 178 | Hmac hmac[1]; |
| wolfSSL | 15:117db924cf7c | 179 | #endif |
| wolfSSL | 15:117db924cf7c | 180 | enum wc_HashType hashT; |
| wolfSSL | 15:117db924cf7c | 181 | |
| wolfSSL | 15:117db924cf7c | 182 | if (output == NULL || pLen < 0 || sLen < 0 || kLen < 0) { |
| wolfSSL | 15:117db924cf7c | 183 | return BAD_FUNC_ARG; |
| wolfSSL | 15:117db924cf7c | 184 | } |
| wolfSSL | 15:117db924cf7c | 185 | |
| wolfSSL | 15:117db924cf7c | 186 | if (iterations <= 0) |
| wolfSSL | 15:117db924cf7c | 187 | iterations = 1; |
| wolfSSL | 15:117db924cf7c | 188 | |
| wolfSSL | 15:117db924cf7c | 189 | hashT = wc_HashTypeConvert(hashType); |
| wolfSSL | 15:117db924cf7c | 190 | hLen = wc_HashGetDigestSize(hashT); |
| wolfSSL | 15:117db924cf7c | 191 | if (hLen < 0) |
| wolfSSL | 15:117db924cf7c | 192 | return BAD_FUNC_ARG; |
| wolfSSL | 15:117db924cf7c | 193 | |
| wolfSSL | 15:117db924cf7c | 194 | #ifdef WOLFSSL_SMALL_STACK |
| wolfSSL | 15:117db924cf7c | 195 | buffer = (byte*)XMALLOC(WC_MAX_DIGEST_SIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
| wolfSSL | 15:117db924cf7c | 196 | if (buffer == NULL) |
| wolfSSL | 15:117db924cf7c | 197 | return MEMORY_E; |
| wolfSSL | 15:117db924cf7c | 198 | hmac = (Hmac*)XMALLOC(sizeof(Hmac), NULL, DYNAMIC_TYPE_HMAC); |
| wolfSSL | 15:117db924cf7c | 199 | if (buffer == NULL) |
| wolfSSL | 15:117db924cf7c | 200 | return MEMORY_E; |
| wolfSSL | 15:117db924cf7c | 201 | #endif |
| wolfSSL | 15:117db924cf7c | 202 | |
| wolfSSL | 15:117db924cf7c | 203 | ret = wc_HmacInit(hmac, NULL, INVALID_DEVID); |
| wolfSSL | 15:117db924cf7c | 204 | if (ret == 0) { |
| wolfSSL | 15:117db924cf7c | 205 | /* use int hashType here, since HMAC FIPS uses the old unique value */ |
| wolfSSL | 15:117db924cf7c | 206 | ret = wc_HmacSetKey(hmac, hashType, passwd, pLen); |
| wolfSSL | 15:117db924cf7c | 207 | |
| wolfSSL | 15:117db924cf7c | 208 | while (ret == 0 && kLen) { |
| wolfSSL | 15:117db924cf7c | 209 | int currentLen; |
| wolfSSL | 15:117db924cf7c | 210 | |
| wolfSSL | 15:117db924cf7c | 211 | ret = wc_HmacUpdate(hmac, salt, sLen); |
| wolfSSL | 15:117db924cf7c | 212 | if (ret != 0) |
| wolfSSL | 15:117db924cf7c | 213 | break; |
| wolfSSL | 15:117db924cf7c | 214 | |
| wolfSSL | 15:117db924cf7c | 215 | /* encode i */ |
| wolfSSL | 15:117db924cf7c | 216 | for (j = 0; j < 4; j++) { |
| wolfSSL | 15:117db924cf7c | 217 | byte b = (byte)(i >> ((3-j) * 8)); |
| wolfSSL | 15:117db924cf7c | 218 | |
| wolfSSL | 15:117db924cf7c | 219 | ret = wc_HmacUpdate(hmac, &b, 1); |
| wolfSSL | 15:117db924cf7c | 220 | if (ret != 0) |
| wolfSSL | 15:117db924cf7c | 221 | break; |
| wolfSSL | 15:117db924cf7c | 222 | } |
| wolfSSL | 15:117db924cf7c | 223 | |
| wolfSSL | 15:117db924cf7c | 224 | /* check ret from inside for loop */ |
| wolfSSL | 15:117db924cf7c | 225 | if (ret != 0) |
| wolfSSL | 15:117db924cf7c | 226 | break; |
| wolfSSL | 15:117db924cf7c | 227 | |
| wolfSSL | 15:117db924cf7c | 228 | ret = wc_HmacFinal(hmac, buffer); |
| wolfSSL | 15:117db924cf7c | 229 | if (ret != 0) |
| wolfSSL | 15:117db924cf7c | 230 | break; |
| wolfSSL | 15:117db924cf7c | 231 | |
| wolfSSL | 15:117db924cf7c | 232 | currentLen = min(kLen, hLen); |
| wolfSSL | 15:117db924cf7c | 233 | XMEMCPY(output, buffer, currentLen); |
| wolfSSL | 15:117db924cf7c | 234 | |
| wolfSSL | 15:117db924cf7c | 235 | for (j = 1; j < iterations; j++) { |
| wolfSSL | 15:117db924cf7c | 236 | ret = wc_HmacUpdate(hmac, buffer, hLen); |
| wolfSSL | 15:117db924cf7c | 237 | if (ret != 0) |
| wolfSSL | 15:117db924cf7c | 238 | break; |
| wolfSSL | 15:117db924cf7c | 239 | ret = wc_HmacFinal(hmac, buffer); |
| wolfSSL | 15:117db924cf7c | 240 | if (ret != 0) |
| wolfSSL | 15:117db924cf7c | 241 | break; |
| wolfSSL | 15:117db924cf7c | 242 | xorbuf(output, buffer, currentLen); |
| wolfSSL | 15:117db924cf7c | 243 | } |
| wolfSSL | 15:117db924cf7c | 244 | |
| wolfSSL | 15:117db924cf7c | 245 | /* check ret from inside for loop */ |
| wolfSSL | 15:117db924cf7c | 246 | if (ret != 0) |
| wolfSSL | 15:117db924cf7c | 247 | break; |
| wolfSSL | 15:117db924cf7c | 248 | |
| wolfSSL | 15:117db924cf7c | 249 | output += currentLen; |
| wolfSSL | 15:117db924cf7c | 250 | kLen -= currentLen; |
| wolfSSL | 15:117db924cf7c | 251 | i++; |
| wolfSSL | 15:117db924cf7c | 252 | } |
| wolfSSL | 15:117db924cf7c | 253 | wc_HmacFree(hmac); |
| wolfSSL | 15:117db924cf7c | 254 | } |
| wolfSSL | 15:117db924cf7c | 255 | |
| wolfSSL | 15:117db924cf7c | 256 | #ifdef WOLFSSL_SMALL_STACK |
| wolfSSL | 15:117db924cf7c | 257 | XFREE(buffer, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
| wolfSSL | 15:117db924cf7c | 258 | XFREE(hmac, NULL, DYNAMIC_TYPE_HMAC); |
| wolfSSL | 15:117db924cf7c | 259 | #endif |
| wolfSSL | 15:117db924cf7c | 260 | |
| wolfSSL | 15:117db924cf7c | 261 | return ret; |
| wolfSSL | 15:117db924cf7c | 262 | } |
| wolfSSL | 15:117db924cf7c | 263 | |
| wolfSSL | 15:117db924cf7c | 264 | /* helper for PKCS12_PBKDF(), does hash operation */ |
| wolfSSL | 15:117db924cf7c | 265 | static int DoPKCS12Hash(int hashType, byte* buffer, word32 totalLen, |
| wolfSSL | 15:117db924cf7c | 266 | byte* Ai, word32 u, int iterations) |
| wolfSSL | 15:117db924cf7c | 267 | { |
| wolfSSL | 15:117db924cf7c | 268 | int i; |
| wolfSSL | 15:117db924cf7c | 269 | int ret = 0; |
| wolfSSL | 15:117db924cf7c | 270 | #ifdef WOLFSSL_SMALL_STACK |
| wolfSSL | 15:117db924cf7c | 271 | wc_HashAlg* hash = NULL; |
| wolfSSL | 15:117db924cf7c | 272 | #else |
| wolfSSL | 15:117db924cf7c | 273 | wc_HashAlg hash[1]; |
| wolfSSL | 15:117db924cf7c | 274 | #endif |
| wolfSSL | 15:117db924cf7c | 275 | enum wc_HashType hashT; |
| wolfSSL | 15:117db924cf7c | 276 | |
| wolfSSL | 15:117db924cf7c | 277 | if (buffer == NULL || Ai == NULL) { |
| wolfSSL | 15:117db924cf7c | 278 | return BAD_FUNC_ARG; |
| wolfSSL | 15:117db924cf7c | 279 | } |
| wolfSSL | 15:117db924cf7c | 280 | |
| wolfSSL | 15:117db924cf7c | 281 | hashT = wc_HashTypeConvert(hashType); |
| wolfSSL | 15:117db924cf7c | 282 | |
| wolfSSL | 15:117db924cf7c | 283 | /* initialize hash */ |
| wolfSSL | 15:117db924cf7c | 284 | #ifdef WOLFSSL_SMALL_STACK |
| wolfSSL | 15:117db924cf7c | 285 | hash = (wc_HashAlg*)XMALLOC(sizeof(wc_HashAlg), NULL, |
| wolfSSL | 15:117db924cf7c | 286 | DYNAMIC_TYPE_HASHCTX); |
| wolfSSL | 15:117db924cf7c | 287 | if (hash == NULL) |
| wolfSSL | 15:117db924cf7c | 288 | return MEMORY_E; |
| wolfSSL | 15:117db924cf7c | 289 | #endif |
| wolfSSL | 15:117db924cf7c | 290 | |
| wolfSSL | 15:117db924cf7c | 291 | ret = wc_HashInit(hash, hashT); |
| wolfSSL | 15:117db924cf7c | 292 | if (ret != 0) { |
| wolfSSL | 15:117db924cf7c | 293 | #ifdef WOLFSSL_SMALL_STACK |
| wolfSSL | 15:117db924cf7c | 294 | XFREE(hash, NULL, DYNAMIC_TYPE_HASHCTX); |
| wolfSSL | 15:117db924cf7c | 295 | #endif |
| wolfSSL | 15:117db924cf7c | 296 | return ret; |
| wolfSSL | 15:117db924cf7c | 297 | } |
| wolfSSL | 15:117db924cf7c | 298 | |
| wolfSSL | 15:117db924cf7c | 299 | ret = wc_HashUpdate(hash, hashT, buffer, totalLen); |
| wolfSSL | 15:117db924cf7c | 300 | |
| wolfSSL | 15:117db924cf7c | 301 | if (ret == 0) |
| wolfSSL | 15:117db924cf7c | 302 | ret = wc_HashFinal(hash, hashT, Ai); |
| wolfSSL | 15:117db924cf7c | 303 | |
| wolfSSL | 15:117db924cf7c | 304 | for (i = 1; i < iterations; i++) { |
| wolfSSL | 15:117db924cf7c | 305 | if (ret == 0) |
| wolfSSL | 15:117db924cf7c | 306 | ret = wc_HashUpdate(hash, hashT, Ai, u); |
| wolfSSL | 15:117db924cf7c | 307 | if (ret == 0) |
| wolfSSL | 15:117db924cf7c | 308 | ret = wc_HashFinal(hash, hashT, Ai); |
| wolfSSL | 15:117db924cf7c | 309 | } |
| wolfSSL | 15:117db924cf7c | 310 | |
| wolfSSL | 15:117db924cf7c | 311 | #ifdef WOLFSSL_SMALL_STACK |
| wolfSSL | 15:117db924cf7c | 312 | XFREE(hash, NULL, DYNAMIC_TYPE_HASHCTX); |
| wolfSSL | 15:117db924cf7c | 313 | #endif |
| wolfSSL | 15:117db924cf7c | 314 | |
| wolfSSL | 15:117db924cf7c | 315 | return ret; |
| wolfSSL | 15:117db924cf7c | 316 | } |
| wolfSSL | 15:117db924cf7c | 317 | |
| wolfSSL | 15:117db924cf7c | 318 | |
| wolfSSL | 15:117db924cf7c | 319 | int wc_PKCS12_PBKDF(byte* output, const byte* passwd, int passLen, |
| wolfSSL | 15:117db924cf7c | 320 | const byte* salt, int saltLen, int iterations, int kLen, int hashType, |
| wolfSSL | 15:117db924cf7c | 321 | int id) |
| wolfSSL | 15:117db924cf7c | 322 | { |
| wolfSSL | 15:117db924cf7c | 323 | return wc_PKCS12_PBKDF_ex(output, passwd, passLen, salt, saltLen, |
| wolfSSL | 15:117db924cf7c | 324 | iterations, kLen, hashType, id, NULL); |
| wolfSSL | 15:117db924cf7c | 325 | } |
| wolfSSL | 15:117db924cf7c | 326 | |
| wolfSSL | 15:117db924cf7c | 327 | |
| wolfSSL | 15:117db924cf7c | 328 | /* extended API that allows a heap hint to be used */ |
| wolfSSL | 15:117db924cf7c | 329 | int wc_PKCS12_PBKDF_ex(byte* output, const byte* passwd, int passLen, |
| wolfSSL | 15:117db924cf7c | 330 | const byte* salt, int saltLen, int iterations, int kLen, |
| wolfSSL | 15:117db924cf7c | 331 | int hashType, int id, void* heap) |
| wolfSSL | 15:117db924cf7c | 332 | { |
| wolfSSL | 15:117db924cf7c | 333 | /* all in bytes instead of bits */ |
| wolfSSL | 15:117db924cf7c | 334 | word32 u, v, dLen, pLen, iLen, sLen, totalLen; |
| wolfSSL | 15:117db924cf7c | 335 | int dynamic = 0; |
| wolfSSL | 15:117db924cf7c | 336 | int ret = 0; |
| wolfSSL | 15:117db924cf7c | 337 | int i; |
| wolfSSL | 15:117db924cf7c | 338 | byte *D, *S, *P, *I; |
| wolfSSL | 15:117db924cf7c | 339 | #ifdef WOLFSSL_SMALL_STACK |
| wolfSSL | 15:117db924cf7c | 340 | byte staticBuffer[1]; /* force dynamic usage */ |
| wolfSSL | 15:117db924cf7c | 341 | #else |
| wolfSSL | 15:117db924cf7c | 342 | byte staticBuffer[1024]; |
| wolfSSL | 15:117db924cf7c | 343 | #endif |
| wolfSSL | 15:117db924cf7c | 344 | byte* buffer = staticBuffer; |
| wolfSSL | 15:117db924cf7c | 345 | |
| wolfSSL | 15:117db924cf7c | 346 | #ifdef WOLFSSL_SMALL_STACK |
| wolfSSL | 15:117db924cf7c | 347 | byte* Ai; |
| wolfSSL | 15:117db924cf7c | 348 | byte* B; |
| wolfSSL | 15:117db924cf7c | 349 | #else |
| wolfSSL | 15:117db924cf7c | 350 | byte Ai[WC_MAX_DIGEST_SIZE]; |
| wolfSSL | 15:117db924cf7c | 351 | byte B[WC_MAX_BLOCK_SIZE]; |
| wolfSSL | 15:117db924cf7c | 352 | #endif |
| wolfSSL | 15:117db924cf7c | 353 | enum wc_HashType hashT; |
| wolfSSL | 15:117db924cf7c | 354 | |
| wolfSSL | 15:117db924cf7c | 355 | (void)heap; |
| wolfSSL | 15:117db924cf7c | 356 | |
| wolfSSL | 15:117db924cf7c | 357 | if (output == NULL || passLen < 0 || saltLen < 0 || kLen < 0) { |
| wolfSSL | 15:117db924cf7c | 358 | return BAD_FUNC_ARG; |
| wolfSSL | 15:117db924cf7c | 359 | } |
| wolfSSL | 15:117db924cf7c | 360 | |
| wolfSSL | 15:117db924cf7c | 361 | if (iterations <= 0) |
| wolfSSL | 15:117db924cf7c | 362 | iterations = 1; |
| wolfSSL | 15:117db924cf7c | 363 | |
| wolfSSL | 15:117db924cf7c | 364 | hashT = wc_HashTypeConvert(hashType); |
| wolfSSL | 15:117db924cf7c | 365 | ret = wc_HashGetDigestSize(hashT); |
| wolfSSL | 15:117db924cf7c | 366 | if (ret < 0) |
| wolfSSL | 15:117db924cf7c | 367 | return ret; |
| wolfSSL | 15:117db924cf7c | 368 | u = ret; |
| wolfSSL | 15:117db924cf7c | 369 | |
| wolfSSL | 15:117db924cf7c | 370 | ret = wc_HashGetBlockSize(hashT); |
| wolfSSL | 15:117db924cf7c | 371 | if (ret < 0) |
| wolfSSL | 15:117db924cf7c | 372 | return ret; |
| wolfSSL | 15:117db924cf7c | 373 | v = ret; |
| wolfSSL | 15:117db924cf7c | 374 | |
| wolfSSL | 15:117db924cf7c | 375 | #ifdef WOLFSSL_SMALL_STACK |
| wolfSSL | 15:117db924cf7c | 376 | Ai = (byte*)XMALLOC(WC_MAX_DIGEST_SIZE, heap, DYNAMIC_TYPE_TMP_BUFFER); |
| wolfSSL | 15:117db924cf7c | 377 | if (Ai == NULL) |
| wolfSSL | 15:117db924cf7c | 378 | return MEMORY_E; |
| wolfSSL | 15:117db924cf7c | 379 | |
| wolfSSL | 15:117db924cf7c | 380 | B = (byte*)XMALLOC(WC_MAX_BLOCK_SIZE, heap, DYNAMIC_TYPE_TMP_BUFFER); |
| wolfSSL | 15:117db924cf7c | 381 | if (B == NULL) { |
| wolfSSL | 15:117db924cf7c | 382 | XFREE(Ai, heap, DYNAMIC_TYPE_TMP_BUFFER); |
| wolfSSL | 15:117db924cf7c | 383 | return MEMORY_E; |
| wolfSSL | 15:117db924cf7c | 384 | } |
| wolfSSL | 15:117db924cf7c | 385 | #endif |
| wolfSSL | 15:117db924cf7c | 386 | |
| wolfSSL | 15:117db924cf7c | 387 | XMEMSET(Ai, 0, WC_MAX_DIGEST_SIZE); |
| wolfSSL | 15:117db924cf7c | 388 | XMEMSET(B, 0, WC_MAX_BLOCK_SIZE); |
| wolfSSL | 15:117db924cf7c | 389 | |
| wolfSSL | 15:117db924cf7c | 390 | dLen = v; |
| wolfSSL | 15:117db924cf7c | 391 | sLen = v * ((saltLen + v - 1) / v); |
| wolfSSL | 15:117db924cf7c | 392 | if (passLen) |
| wolfSSL | 15:117db924cf7c | 393 | pLen = v * ((passLen + v - 1) / v); |
| wolfSSL | 15:117db924cf7c | 394 | else |
| wolfSSL | 15:117db924cf7c | 395 | pLen = 0; |
| wolfSSL | 15:117db924cf7c | 396 | iLen = sLen + pLen; |
| wolfSSL | 15:117db924cf7c | 397 | |
| wolfSSL | 15:117db924cf7c | 398 | totalLen = dLen + sLen + pLen; |
| wolfSSL | 15:117db924cf7c | 399 | |
| wolfSSL | 15:117db924cf7c | 400 | if (totalLen > sizeof(staticBuffer)) { |
| wolfSSL | 15:117db924cf7c | 401 | buffer = (byte*)XMALLOC(totalLen, heap, DYNAMIC_TYPE_KEY); |
| wolfSSL | 15:117db924cf7c | 402 | if (buffer == NULL) { |
| wolfSSL | 15:117db924cf7c | 403 | #ifdef WOLFSSL_SMALL_STACK |
| wolfSSL | 15:117db924cf7c | 404 | XFREE(Ai, heap, DYNAMIC_TYPE_TMP_BUFFER); |
| wolfSSL | 15:117db924cf7c | 405 | XFREE(B, heap, DYNAMIC_TYPE_TMP_BUFFER); |
| wolfSSL | 15:117db924cf7c | 406 | #endif |
| wolfSSL | 15:117db924cf7c | 407 | return MEMORY_E; |
| wolfSSL | 15:117db924cf7c | 408 | } |
| wolfSSL | 15:117db924cf7c | 409 | dynamic = 1; |
| wolfSSL | 15:117db924cf7c | 410 | } |
| wolfSSL | 15:117db924cf7c | 411 | |
| wolfSSL | 15:117db924cf7c | 412 | D = buffer; |
| wolfSSL | 15:117db924cf7c | 413 | S = D + dLen; |
| wolfSSL | 15:117db924cf7c | 414 | P = S + sLen; |
| wolfSSL | 15:117db924cf7c | 415 | I = S; |
| wolfSSL | 15:117db924cf7c | 416 | |
| wolfSSL | 15:117db924cf7c | 417 | XMEMSET(D, id, dLen); |
| wolfSSL | 15:117db924cf7c | 418 | |
| wolfSSL | 15:117db924cf7c | 419 | for (i = 0; i < (int)sLen; i++) |
| wolfSSL | 15:117db924cf7c | 420 | S[i] = salt[i % saltLen]; |
| wolfSSL | 15:117db924cf7c | 421 | for (i = 0; i < (int)pLen; i++) |
| wolfSSL | 15:117db924cf7c | 422 | P[i] = passwd[i % passLen]; |
| wolfSSL | 15:117db924cf7c | 423 | |
| wolfSSL | 15:117db924cf7c | 424 | while (kLen > 0) { |
| wolfSSL | 15:117db924cf7c | 425 | word32 currentLen; |
| wolfSSL | 15:117db924cf7c | 426 | mp_int B1; |
| wolfSSL | 15:117db924cf7c | 427 | |
| wolfSSL | 15:117db924cf7c | 428 | ret = DoPKCS12Hash(hashType, buffer, totalLen, Ai, u, iterations); |
| wolfSSL | 15:117db924cf7c | 429 | if (ret < 0) |
| wolfSSL | 15:117db924cf7c | 430 | break; |
| wolfSSL | 15:117db924cf7c | 431 | |
| wolfSSL | 15:117db924cf7c | 432 | for (i = 0; i < (int)v; i++) |
| wolfSSL | 15:117db924cf7c | 433 | B[i] = Ai[i % u]; |
| wolfSSL | 15:117db924cf7c | 434 | |
| wolfSSL | 15:117db924cf7c | 435 | if (mp_init(&B1) != MP_OKAY) |
| wolfSSL | 15:117db924cf7c | 436 | ret = MP_INIT_E; |
| wolfSSL | 15:117db924cf7c | 437 | else if (mp_read_unsigned_bin(&B1, B, v) != MP_OKAY) |
| wolfSSL | 15:117db924cf7c | 438 | ret = MP_READ_E; |
| wolfSSL | 15:117db924cf7c | 439 | else if (mp_add_d(&B1, (mp_digit)1, &B1) != MP_OKAY) |
| wolfSSL | 15:117db924cf7c | 440 | ret = MP_ADD_E; |
| wolfSSL | 15:117db924cf7c | 441 | |
| wolfSSL | 15:117db924cf7c | 442 | if (ret != 0) { |
| wolfSSL | 15:117db924cf7c | 443 | mp_clear(&B1); |
| wolfSSL | 15:117db924cf7c | 444 | break; |
| wolfSSL | 15:117db924cf7c | 445 | } |
| wolfSSL | 15:117db924cf7c | 446 | |
| wolfSSL | 15:117db924cf7c | 447 | for (i = 0; i < (int)iLen; i += v) { |
| wolfSSL | 15:117db924cf7c | 448 | int outSz; |
| wolfSSL | 15:117db924cf7c | 449 | mp_int i1; |
| wolfSSL | 15:117db924cf7c | 450 | mp_int res; |
| wolfSSL | 15:117db924cf7c | 451 | |
| wolfSSL | 15:117db924cf7c | 452 | if (mp_init_multi(&i1, &res, NULL, NULL, NULL, NULL) != MP_OKAY) { |
| wolfSSL | 15:117db924cf7c | 453 | ret = MP_INIT_E; |
| wolfSSL | 15:117db924cf7c | 454 | break; |
| wolfSSL | 15:117db924cf7c | 455 | } |
| wolfSSL | 15:117db924cf7c | 456 | if (mp_read_unsigned_bin(&i1, I + i, v) != MP_OKAY) |
| wolfSSL | 15:117db924cf7c | 457 | ret = MP_READ_E; |
| wolfSSL | 15:117db924cf7c | 458 | else if (mp_add(&i1, &B1, &res) != MP_OKAY) |
| wolfSSL | 15:117db924cf7c | 459 | ret = MP_ADD_E; |
| wolfSSL | 15:117db924cf7c | 460 | else if ( (outSz = mp_unsigned_bin_size(&res)) < 0) |
| wolfSSL | 15:117db924cf7c | 461 | ret = MP_TO_E; |
| wolfSSL | 15:117db924cf7c | 462 | else { |
| wolfSSL | 15:117db924cf7c | 463 | if (outSz > (int)v) { |
| wolfSSL | 15:117db924cf7c | 464 | /* take off MSB */ |
| wolfSSL | 15:117db924cf7c | 465 | byte tmp[129]; |
| wolfSSL | 15:117db924cf7c | 466 | ret = mp_to_unsigned_bin(&res, tmp); |
| wolfSSL | 15:117db924cf7c | 467 | XMEMCPY(I + i, tmp + 1, v); |
| wolfSSL | 15:117db924cf7c | 468 | } |
| wolfSSL | 15:117db924cf7c | 469 | else if (outSz < (int)v) { |
| wolfSSL | 15:117db924cf7c | 470 | XMEMSET(I + i, 0, v - outSz); |
| wolfSSL | 15:117db924cf7c | 471 | ret = mp_to_unsigned_bin(&res, I + i + v - outSz); |
| wolfSSL | 15:117db924cf7c | 472 | } |
| wolfSSL | 15:117db924cf7c | 473 | else |
| wolfSSL | 15:117db924cf7c | 474 | ret = mp_to_unsigned_bin(&res, I + i); |
| wolfSSL | 15:117db924cf7c | 475 | } |
| wolfSSL | 15:117db924cf7c | 476 | |
| wolfSSL | 15:117db924cf7c | 477 | mp_clear(&i1); |
| wolfSSL | 15:117db924cf7c | 478 | mp_clear(&res); |
| wolfSSL | 15:117db924cf7c | 479 | if (ret < 0) break; |
| wolfSSL | 15:117db924cf7c | 480 | } |
| wolfSSL | 15:117db924cf7c | 481 | |
| wolfSSL | 15:117db924cf7c | 482 | currentLen = min(kLen, (int)u); |
| wolfSSL | 15:117db924cf7c | 483 | XMEMCPY(output, Ai, currentLen); |
| wolfSSL | 15:117db924cf7c | 484 | output += currentLen; |
| wolfSSL | 15:117db924cf7c | 485 | kLen -= currentLen; |
| wolfSSL | 15:117db924cf7c | 486 | mp_clear(&B1); |
| wolfSSL | 15:117db924cf7c | 487 | } |
| wolfSSL | 15:117db924cf7c | 488 | |
| wolfSSL | 15:117db924cf7c | 489 | if (dynamic) XFREE(buffer, heap, DYNAMIC_TYPE_KEY); |
| wolfSSL | 15:117db924cf7c | 490 | |
| wolfSSL | 15:117db924cf7c | 491 | #ifdef WOLFSSL_SMALL_STACK |
| wolfSSL | 15:117db924cf7c | 492 | XFREE(Ai, heap, DYNAMIC_TYPE_TMP_BUFFER); |
| wolfSSL | 15:117db924cf7c | 493 | XFREE(B, heap, DYNAMIC_TYPE_TMP_BUFFER); |
| wolfSSL | 15:117db924cf7c | 494 | #endif |
| wolfSSL | 15:117db924cf7c | 495 | |
| wolfSSL | 15:117db924cf7c | 496 | return ret; |
| wolfSSL | 15:117db924cf7c | 497 | } |
| wolfSSL | 15:117db924cf7c | 498 | |
| wolfSSL | 15:117db924cf7c | 499 | #ifdef HAVE_SCRYPT |
| wolfSSL | 15:117db924cf7c | 500 | /* Rotate the 32-bit value a by b bits to the left. |
| wolfSSL | 15:117db924cf7c | 501 | * |
| wolfSSL | 15:117db924cf7c | 502 | * a 32-bit value. |
| wolfSSL | 15:117db924cf7c | 503 | * b Number of bits to rotate. |
| wolfSSL | 15:117db924cf7c | 504 | * returns rotated value. |
| wolfSSL | 15:117db924cf7c | 505 | */ |
| wolfSSL | 15:117db924cf7c | 506 | #define R(a, b) rotlFixed(a, b) |
| wolfSSL | 15:117db924cf7c | 507 | |
| wolfSSL | 15:117db924cf7c | 508 | /* One round of Salsa20/8. |
| wolfSSL | 15:117db924cf7c | 509 | * Code taken from RFC 7914: scrypt PBKDF. |
| wolfSSL | 15:117db924cf7c | 510 | * |
| wolfSSL | 15:117db924cf7c | 511 | * out Output buffer. |
| wolfSSL | 15:117db924cf7c | 512 | * in Input data to hash. |
| wolfSSL | 15:117db924cf7c | 513 | */ |
| wolfSSL | 15:117db924cf7c | 514 | static void scryptSalsa(word32* out, word32* in) |
| wolfSSL | 15:117db924cf7c | 515 | { |
| wolfSSL | 15:117db924cf7c | 516 | int i; |
| wolfSSL | 15:117db924cf7c | 517 | word32 x[16]; |
| wolfSSL | 15:117db924cf7c | 518 | |
| wolfSSL | 15:117db924cf7c | 519 | #ifdef LITTLE_ENDIAN_ORDER |
| wolfSSL | 15:117db924cf7c | 520 | for (i = 0; i < 16; ++i) |
| wolfSSL | 15:117db924cf7c | 521 | x[i] = in[i]; |
| wolfSSL | 15:117db924cf7c | 522 | #else |
| wolfSSL | 15:117db924cf7c | 523 | for (i = 0; i < 16; i++) |
| wolfSSL | 15:117db924cf7c | 524 | x[i] = ByteReverseWord32(in[i]); |
| wolfSSL | 15:117db924cf7c | 525 | #endif |
| wolfSSL | 15:117db924cf7c | 526 | for (i = 8; i > 0; i -= 2) { |
| wolfSSL | 15:117db924cf7c | 527 | x[ 4] ^= R(x[ 0] + x[12], 7); x[ 8] ^= R(x[ 4] + x[ 0], 9); |
| wolfSSL | 15:117db924cf7c | 528 | x[12] ^= R(x[ 8] + x[ 4], 13); x[ 0] ^= R(x[12] + x[ 8], 18); |
| wolfSSL | 15:117db924cf7c | 529 | x[ 9] ^= R(x[ 5] + x[ 1], 7); x[13] ^= R(x[ 9] + x[ 5], 9); |
| wolfSSL | 15:117db924cf7c | 530 | x[ 1] ^= R(x[13] + x[ 9], 13); x[ 5] ^= R(x[ 1] + x[13], 18); |
| wolfSSL | 15:117db924cf7c | 531 | x[14] ^= R(x[10] + x[ 6], 7); x[ 2] ^= R(x[14] + x[10], 9); |
| wolfSSL | 15:117db924cf7c | 532 | x[ 6] ^= R(x[ 2] + x[14], 13); x[10] ^= R(x[ 6] + x[ 2], 18); |
| wolfSSL | 15:117db924cf7c | 533 | x[ 3] ^= R(x[15] + x[11], 7); x[ 7] ^= R(x[ 3] + x[15], 9); |
| wolfSSL | 15:117db924cf7c | 534 | x[11] ^= R(x[ 7] + x[ 3], 13); x[15] ^= R(x[11] + x[ 7], 18); |
| wolfSSL | 15:117db924cf7c | 535 | x[ 1] ^= R(x[ 0] + x[ 3], 7); x[ 2] ^= R(x[ 1] + x[ 0], 9); |
| wolfSSL | 15:117db924cf7c | 536 | x[ 3] ^= R(x[ 2] + x[ 1], 13); x[ 0] ^= R(x[ 3] + x[ 2], 18); |
| wolfSSL | 15:117db924cf7c | 537 | x[ 6] ^= R(x[ 5] + x[ 4], 7); x[ 7] ^= R(x[ 6] + x[ 5], 9); |
| wolfSSL | 15:117db924cf7c | 538 | x[ 4] ^= R(x[ 7] + x[ 6], 13); x[ 5] ^= R(x[ 4] + x[ 7], 18); |
| wolfSSL | 15:117db924cf7c | 539 | x[11] ^= R(x[10] + x[ 9], 7); x[ 8] ^= R(x[11] + x[10], 9); |
| wolfSSL | 15:117db924cf7c | 540 | x[ 9] ^= R(x[ 8] + x[11], 13); x[10] ^= R(x[ 9] + x[ 8], 18); |
| wolfSSL | 15:117db924cf7c | 541 | x[12] ^= R(x[15] + x[14], 7); x[13] ^= R(x[12] + x[15], 9); |
| wolfSSL | 15:117db924cf7c | 542 | x[14] ^= R(x[13] + x[12], 13); x[15] ^= R(x[14] + x[13], 18); |
| wolfSSL | 15:117db924cf7c | 543 | } |
| wolfSSL | 15:117db924cf7c | 544 | #ifdef LITTLE_ENDIAN_ORDER |
| wolfSSL | 15:117db924cf7c | 545 | for (i = 0; i < 16; ++i) |
| wolfSSL | 15:117db924cf7c | 546 | out[i] = in[i] + x[i]; |
| wolfSSL | 15:117db924cf7c | 547 | #else |
| wolfSSL | 15:117db924cf7c | 548 | for (i = 0; i < 16; i++) |
| wolfSSL | 15:117db924cf7c | 549 | out[i] = ByteReverseWord32(ByteReverseWord32(in[i]) + x[i]); |
| wolfSSL | 15:117db924cf7c | 550 | #endif |
| wolfSSL | 15:117db924cf7c | 551 | } |
| wolfSSL | 15:117db924cf7c | 552 | |
| wolfSSL | 15:117db924cf7c | 553 | /* Mix a block using Salsa20/8. |
| wolfSSL | 15:117db924cf7c | 554 | * Based on RFC 7914: scrypt PBKDF. |
| wolfSSL | 15:117db924cf7c | 555 | * |
| wolfSSL | 15:117db924cf7c | 556 | * b Blocks to mix. |
| wolfSSL | 15:117db924cf7c | 557 | * y Temporary storage. |
| wolfSSL | 15:117db924cf7c | 558 | * r Size of the block. |
| wolfSSL | 15:117db924cf7c | 559 | */ |
| wolfSSL | 15:117db924cf7c | 560 | static void scryptBlockMix(byte* b, byte* y, int r) |
| wolfSSL | 15:117db924cf7c | 561 | { |
| wolfSSL | 15:117db924cf7c | 562 | byte x[64]; |
| wolfSSL | 15:117db924cf7c | 563 | #ifdef WORD64_AVAILABLE |
| wolfSSL | 15:117db924cf7c | 564 | word64* b64 = (word64*)b; |
| wolfSSL | 15:117db924cf7c | 565 | word64* y64 = (word64*)y; |
| wolfSSL | 15:117db924cf7c | 566 | word64* x64 = (word64*)x; |
| wolfSSL | 15:117db924cf7c | 567 | #else |
| wolfSSL | 15:117db924cf7c | 568 | word32* b32 = (word32*)b; |
| wolfSSL | 15:117db924cf7c | 569 | word32* y32 = (word32*)y; |
| wolfSSL | 15:117db924cf7c | 570 | word32* x32 = (word32*)x; |
| wolfSSL | 15:117db924cf7c | 571 | #endif |
| wolfSSL | 15:117db924cf7c | 572 | int i; |
| wolfSSL | 15:117db924cf7c | 573 | int j; |
| wolfSSL | 15:117db924cf7c | 574 | |
| wolfSSL | 15:117db924cf7c | 575 | /* Step 1. */ |
| wolfSSL | 15:117db924cf7c | 576 | XMEMCPY(x, b + (2 * r - 1) * 64, sizeof(x)); |
| wolfSSL | 15:117db924cf7c | 577 | /* Step 2. */ |
| wolfSSL | 15:117db924cf7c | 578 | for (i = 0; i < 2 * r; i++) |
| wolfSSL | 15:117db924cf7c | 579 | { |
| wolfSSL | 15:117db924cf7c | 580 | #ifdef WORD64_AVAILABLE |
| wolfSSL | 15:117db924cf7c | 581 | for (j = 0; j < 8; j++) |
| wolfSSL | 15:117db924cf7c | 582 | x64[j] ^= b64[i * 8 + j]; |
| wolfSSL | 15:117db924cf7c | 583 | #else |
| wolfSSL | 15:117db924cf7c | 584 | for (j = 0; j < 16; j++) |
| wolfSSL | 15:117db924cf7c | 585 | x32[j] ^= b32[i * 16 + j]; |
| wolfSSL | 15:117db924cf7c | 586 | #endif |
| wolfSSL | 15:117db924cf7c | 587 | scryptSalsa((word32*)x, (word32*)x); |
| wolfSSL | 15:117db924cf7c | 588 | XMEMCPY(y + i * 64, x, sizeof(x)); |
| wolfSSL | 15:117db924cf7c | 589 | } |
| wolfSSL | 15:117db924cf7c | 590 | /* Step 3. */ |
| wolfSSL | 15:117db924cf7c | 591 | for (i = 0; i < r; i++) { |
| wolfSSL | 15:117db924cf7c | 592 | #ifdef WORD64_AVAILABLE |
| wolfSSL | 15:117db924cf7c | 593 | for (j = 0; j < 8; j++) { |
| wolfSSL | 15:117db924cf7c | 594 | b64[i * 8 + j] = y64[2 * i * 8 + j]; |
| wolfSSL | 15:117db924cf7c | 595 | b64[(r + i) * 8 + j] = y64[(2 * i + 1) * 8 + j]; |
| wolfSSL | 15:117db924cf7c | 596 | } |
| wolfSSL | 15:117db924cf7c | 597 | #else |
| wolfSSL | 15:117db924cf7c | 598 | for (j = 0; j < 16; j++) { |
| wolfSSL | 15:117db924cf7c | 599 | b32[i * 16 + j] = y32[2 * i * 16 + j]; |
| wolfSSL | 15:117db924cf7c | 600 | b32[(r + i) * 16 + j] = y32[(2 * i + 1) * 16 + j]; |
| wolfSSL | 15:117db924cf7c | 601 | } |
| wolfSSL | 15:117db924cf7c | 602 | #endif |
| wolfSSL | 15:117db924cf7c | 603 | } |
| wolfSSL | 15:117db924cf7c | 604 | } |
| wolfSSL | 15:117db924cf7c | 605 | |
| wolfSSL | 15:117db924cf7c | 606 | /* Random oracles mix. |
| wolfSSL | 15:117db924cf7c | 607 | * Based on RFC 7914: scrypt PBKDF. |
| wolfSSL | 15:117db924cf7c | 608 | * |
| wolfSSL | 15:117db924cf7c | 609 | * x Data to mix. |
| wolfSSL | 15:117db924cf7c | 610 | * v Temporary buffer. |
| wolfSSL | 15:117db924cf7c | 611 | * y Temporary buffer for the block mix. |
| wolfSSL | 15:117db924cf7c | 612 | * r Block size parameter. |
| wolfSSL | 15:117db924cf7c | 613 | * n CPU/Memory cost parameter. |
| wolfSSL | 15:117db924cf7c | 614 | */ |
| wolfSSL | 15:117db924cf7c | 615 | static void scryptROMix(byte* x, byte* v, byte* y, int r, word32 n) |
| wolfSSL | 15:117db924cf7c | 616 | { |
| wolfSSL | 15:117db924cf7c | 617 | word32 i; |
| wolfSSL | 15:117db924cf7c | 618 | word32 j; |
| wolfSSL | 15:117db924cf7c | 619 | word32 k; |
| wolfSSL | 15:117db924cf7c | 620 | word32 bSz = 128 * r; |
| wolfSSL | 15:117db924cf7c | 621 | #ifdef WORD64_AVAILABLE |
| wolfSSL | 15:117db924cf7c | 622 | word64* x64 = (word64*)x; |
| wolfSSL | 15:117db924cf7c | 623 | word64* v64 = (word64*)v; |
| wolfSSL | 15:117db924cf7c | 624 | #else |
| wolfSSL | 15:117db924cf7c | 625 | word32* x32 = (word32*)x; |
| wolfSSL | 15:117db924cf7c | 626 | word32* v32 = (word32*)v; |
| wolfSSL | 15:117db924cf7c | 627 | #endif |
| wolfSSL | 15:117db924cf7c | 628 | |
| wolfSSL | 15:117db924cf7c | 629 | /* Step 1. X = B (B not needed therefore not implemented) */ |
| wolfSSL | 15:117db924cf7c | 630 | /* Step 2. */ |
| wolfSSL | 15:117db924cf7c | 631 | for (i = 0; i < n; i++) |
| wolfSSL | 15:117db924cf7c | 632 | { |
| wolfSSL | 15:117db924cf7c | 633 | XMEMCPY(v + i * bSz, x, bSz); |
| wolfSSL | 15:117db924cf7c | 634 | scryptBlockMix(x, y, r); |
| wolfSSL | 15:117db924cf7c | 635 | } |
| wolfSSL | 15:117db924cf7c | 636 | |
| wolfSSL | 15:117db924cf7c | 637 | /* Step 3. */ |
| wolfSSL | 15:117db924cf7c | 638 | for (i = 0; i < n; i++) |
| wolfSSL | 15:117db924cf7c | 639 | { |
| wolfSSL | 15:117db924cf7c | 640 | #ifdef LITTLE_ENDIAN_ORDER |
| wolfSSL | 15:117db924cf7c | 641 | #ifdef WORD64_AVAILABLE |
| wolfSSL | 15:117db924cf7c | 642 | j = *(word64*)(x + (2*r - 1) * 64) & (n-1); |
| wolfSSL | 15:117db924cf7c | 643 | #else |
| wolfSSL | 15:117db924cf7c | 644 | j = *(word32*)(x + (2*r - 1) * 64) & (n-1); |
| wolfSSL | 15:117db924cf7c | 645 | #endif |
| wolfSSL | 15:117db924cf7c | 646 | #else |
| wolfSSL | 15:117db924cf7c | 647 | byte* t = x + (2*r - 1) * 64; |
| wolfSSL | 15:117db924cf7c | 648 | j = (t[0] | (t[1] << 8) | (t[2] << 16) | ((word32)t[3] << 24)) & (n-1); |
| wolfSSL | 15:117db924cf7c | 649 | #endif |
| wolfSSL | 15:117db924cf7c | 650 | #ifdef WORD64_AVAILABLE |
| wolfSSL | 15:117db924cf7c | 651 | for (k = 0; k < bSz / 8; k++) |
| wolfSSL | 15:117db924cf7c | 652 | x64[k] ^= v64[j * bSz / 8 + k]; |
| wolfSSL | 15:117db924cf7c | 653 | #else |
| wolfSSL | 15:117db924cf7c | 654 | for (k = 0; k < bSz / 4; k++) |
| wolfSSL | 15:117db924cf7c | 655 | x32[k] ^= v32[j * bSz / 4 + k]; |
| wolfSSL | 15:117db924cf7c | 656 | #endif |
| wolfSSL | 15:117db924cf7c | 657 | scryptBlockMix(x, y, r); |
| wolfSSL | 15:117db924cf7c | 658 | } |
| wolfSSL | 15:117db924cf7c | 659 | /* Step 4. B' = X (B = X = B' so not needed, therefore not implemented) */ |
| wolfSSL | 15:117db924cf7c | 660 | } |
| wolfSSL | 15:117db924cf7c | 661 | |
| wolfSSL | 15:117db924cf7c | 662 | /* Generates an key derived from a password and salt using a memory hard |
| wolfSSL | 15:117db924cf7c | 663 | * algorithm. |
| wolfSSL | 15:117db924cf7c | 664 | * Implements RFC 7914: scrypt PBKDF. |
| wolfSSL | 15:117db924cf7c | 665 | * |
| wolfSSL | 15:117db924cf7c | 666 | * output The derived key. |
| wolfSSL | 15:117db924cf7c | 667 | * passwd The password to derive key from. |
| wolfSSL | 15:117db924cf7c | 668 | * passLen The length of the password. |
| wolfSSL | 15:117db924cf7c | 669 | * salt The key specific data. |
| wolfSSL | 15:117db924cf7c | 670 | * saltLen The length of the salt data. |
| wolfSSL | 15:117db924cf7c | 671 | * cost The CPU/memory cost parameter. Range: 1..(128*r/8-1) |
| wolfSSL | 15:117db924cf7c | 672 | * (Iterations = 2^cost) |
| wolfSSL | 15:117db924cf7c | 673 | * blockSize The number of 128 byte octets in a working block. |
| wolfSSL | 15:117db924cf7c | 674 | * parallel The number of parallel mix operations to perform. |
| wolfSSL | 15:117db924cf7c | 675 | * (Note: this implementation does not use threads.) |
| wolfSSL | 15:117db924cf7c | 676 | * dkLen The length of the derived key in bytes. |
| wolfSSL | 15:117db924cf7c | 677 | * returns BAD_FUNC_ARG when: parallel not 1, blockSize is too large for cost. |
| wolfSSL | 15:117db924cf7c | 678 | */ |
| wolfSSL | 15:117db924cf7c | 679 | int wc_scrypt(byte* output, const byte* passwd, int passLen, |
| wolfSSL | 15:117db924cf7c | 680 | const byte* salt, int saltLen, int cost, int blockSize, |
| wolfSSL | 15:117db924cf7c | 681 | int parallel, int dkLen) |
| wolfSSL | 15:117db924cf7c | 682 | { |
| wolfSSL | 15:117db924cf7c | 683 | int ret = 0; |
| wolfSSL | 15:117db924cf7c | 684 | int i; |
| wolfSSL | 15:117db924cf7c | 685 | byte* v = NULL; |
| wolfSSL | 15:117db924cf7c | 686 | byte* y = NULL; |
| wolfSSL | 15:117db924cf7c | 687 | byte* blocks = NULL; |
| wolfSSL | 15:117db924cf7c | 688 | word32 blocksSz; |
| wolfSSL | 15:117db924cf7c | 689 | word32 bSz; |
| wolfSSL | 15:117db924cf7c | 690 | |
| wolfSSL | 15:117db924cf7c | 691 | if (blockSize > 8) |
| wolfSSL | 15:117db924cf7c | 692 | return BAD_FUNC_ARG; |
| wolfSSL | 15:117db924cf7c | 693 | |
| wolfSSL | 15:117db924cf7c | 694 | if (cost < 1 || cost >= 128 * blockSize / 8) |
| wolfSSL | 15:117db924cf7c | 695 | return BAD_FUNC_ARG; |
| wolfSSL | 15:117db924cf7c | 696 | |
| wolfSSL | 15:117db924cf7c | 697 | bSz = 128 * blockSize; |
| wolfSSL | 15:117db924cf7c | 698 | blocksSz = bSz * parallel; |
| wolfSSL | 15:117db924cf7c | 699 | blocks = (byte*)XMALLOC(blocksSz, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
| wolfSSL | 15:117db924cf7c | 700 | if (blocks == NULL) |
| wolfSSL | 15:117db924cf7c | 701 | goto end; |
| wolfSSL | 15:117db924cf7c | 702 | /* Temporary for scryptROMix. */ |
| wolfSSL | 15:117db924cf7c | 703 | v = (byte*)XMALLOC((1 << cost) * bSz, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
| wolfSSL | 15:117db924cf7c | 704 | if (v == NULL) |
| wolfSSL | 15:117db924cf7c | 705 | goto end; |
| wolfSSL | 15:117db924cf7c | 706 | /* Temporary for scryptBlockMix. */ |
| wolfSSL | 15:117db924cf7c | 707 | y = (byte*)XMALLOC(blockSize * 128, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
| wolfSSL | 15:117db924cf7c | 708 | if (y == NULL) |
| wolfSSL | 15:117db924cf7c | 709 | goto end; |
| wolfSSL | 15:117db924cf7c | 710 | |
| wolfSSL | 15:117db924cf7c | 711 | /* Step 1. */ |
| wolfSSL | 15:117db924cf7c | 712 | ret = wc_PBKDF2(blocks, passwd, passLen, salt, saltLen, 1, blocksSz, |
| wolfSSL | 15:117db924cf7c | 713 | WC_SHA256); |
| wolfSSL | 15:117db924cf7c | 714 | if (ret != 0) |
| wolfSSL | 15:117db924cf7c | 715 | goto end; |
| wolfSSL | 15:117db924cf7c | 716 | |
| wolfSSL | 15:117db924cf7c | 717 | /* Step 2. */ |
| wolfSSL | 15:117db924cf7c | 718 | for (i = 0; i < parallel; i++) |
| wolfSSL | 15:117db924cf7c | 719 | scryptROMix(blocks + i * bSz, v, y, blockSize, 1 << cost); |
| wolfSSL | 15:117db924cf7c | 720 | |
| wolfSSL | 15:117db924cf7c | 721 | /* Step 3. */ |
| wolfSSL | 15:117db924cf7c | 722 | ret = wc_PBKDF2(output, passwd, passLen, blocks, blocksSz, 1, dkLen, |
| wolfSSL | 15:117db924cf7c | 723 | WC_SHA256); |
| wolfSSL | 15:117db924cf7c | 724 | end: |
| wolfSSL | 15:117db924cf7c | 725 | if (blocks != NULL) |
| wolfSSL | 15:117db924cf7c | 726 | XFREE(blocks, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
| wolfSSL | 15:117db924cf7c | 727 | if (v != NULL) |
| wolfSSL | 15:117db924cf7c | 728 | XFREE(v, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
| wolfSSL | 15:117db924cf7c | 729 | if (y != NULL) |
| wolfSSL | 15:117db924cf7c | 730 | XFREE(y, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
| wolfSSL | 15:117db924cf7c | 731 | |
| wolfSSL | 15:117db924cf7c | 732 | return ret; |
| wolfSSL | 15:117db924cf7c | 733 | } |
| wolfSSL | 15:117db924cf7c | 734 | #endif |
| wolfSSL | 15:117db924cf7c | 735 | |
| wolfSSL | 15:117db924cf7c | 736 | #undef WC_MAX_DIGEST_SIZE |
| wolfSSL | 15:117db924cf7c | 737 | |
| wolfSSL | 15:117db924cf7c | 738 | #endif /* NO_PWDBASED */ |
| wolfSSL | 15:117db924cf7c | 739 | |
| wolfSSL | 15:117db924cf7c | 740 |