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| 1 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL | |
| 2 * project 2006. | |
| 3 */ | |
| 4 /* ==================================================================== | |
| 5 * Copyright (c) 2006 The OpenSSL Project. All rights reserved. | |
| 6 * | |
| 7 * Redistribution and use in source and binary forms, with or without | |
| 8 * modification, are permitted provided that the following conditions | |
| 9 * are met: | |
| 10 * | |
| 11 * 1. Redistributions of source code must retain the above copyright | |
| 12 * notice, this list of conditions and the following disclaimer. | |
| 13 * | |
| 14 * 2. Redistributions in binary form must reproduce the above copyright | |
| 15 * notice, this list of conditions and the following disclaimer in | |
| 16 * the documentation and/or other materials provided with the | |
| 17 * distribution. | |
| 18 * | |
| 19 * 3. All advertising materials mentioning features or use of this | |
| 20 * software must display the following acknowledgment: | |
| 21 * "This product includes software developed by the OpenSSL Project | |
| 22 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" | |
| 23 * | |
| 24 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
| 25 * endorse or promote products derived from this software without | |
| 26 * prior written permission. For written permission, please contact | |
| 27 * licensing@OpenSSL.org. | |
| 28 * | |
| 29 * 5. Products derived from this software may not be called "OpenSSL" | |
| 30 * nor may "OpenSSL" appear in their names without prior written | |
| 31 * permission of the OpenSSL Project. | |
| 32 * | |
| 33 * 6. Redistributions of any form whatsoever must retain the following | |
| 34 * acknowledgment: | |
| 35 * "This product includes software developed by the OpenSSL Project | |
| 36 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" | |
| 37 * | |
| 38 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
| 39 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 40 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 41 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
| 42 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 43 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
| 44 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
| 45 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 46 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
| 47 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 48 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
| 49 * OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 50 * ==================================================================== | |
| 51 * | |
| 52 * This product includes cryptographic software written by Eric Young | |
| 53 * (eay@cryptsoft.com). This product includes software written by Tim | |
| 54 * Hudson (tjh@cryptsoft.com). | |
| 55 * | |
| 56 */ | |
| 57 | |
| 58 #include <stdio.h> | |
| 59 #include "cryptlib.h" | |
| 60 #include <openssl/asn1t.h> | |
| 61 #include <openssl/x509.h> | |
| 62 #include <openssl/evp.h> | |
| 63 #include <openssl/bn.h> | |
| 64 #include "evp_locl.h" | |
| 65 #include "dsa_locl.h" | |
| 66 | |
| 67 /* DSA pkey context structure */ | |
| 68 | |
| 69 typedef struct | |
| 70 { | |
| 71 /* Parameter gen parameters */ | |
| 72 int nbits; /* size of p in bits (default: 1024) */ | |
| 73 int qbits; /* size of q in bits (default: 160) */ | |
| 74 const EVP_MD *pmd; /* MD for parameter generation */ | |
| 75 /* Keygen callback info */ | |
| 76 int gentmp[2]; | |
| 77 /* message digest */ | |
| 78 const EVP_MD *md; /* MD for the signature */ | |
| 79 } DSA_PKEY_CTX; | |
| 80 | |
| 81 static int pkey_dsa_init(EVP_PKEY_CTX *ctx) | |
| 82 { | |
| 83 DSA_PKEY_CTX *dctx; | |
| 84 dctx = OPENSSL_malloc(sizeof(DSA_PKEY_CTX)); | |
| 85 if (!dctx) | |
| 86 return 0; | |
| 87 dctx->nbits = 1024; | |
| 88 dctx->qbits = 160; | |
| 89 dctx->pmd = NULL; | |
| 90 dctx->md = NULL; | |
| 91 | |
| 92 ctx->data = dctx; | |
| 93 ctx->keygen_info = dctx->gentmp; | |
| 94 ctx->keygen_info_count = 2; | |
| 95 | |
| 96 return 1; | |
| 97 } | |
| 98 | |
| 99 static int pkey_dsa_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src) | |
| 100 { | |
| 101 DSA_PKEY_CTX *dctx, *sctx; | |
| 102 if (!pkey_dsa_init(dst)) | |
| 103 return 0; | |
| 104 sctx = src->data; | |
| 105 dctx = dst->data; | |
| 106 dctx->nbits = sctx->nbits; | |
| 107 dctx->qbits = sctx->qbits; | |
| 108 dctx->pmd = sctx->pmd; | |
| 109 dctx->md = sctx->md; | |
| 110 return 1; | |
| 111 } | |
| 112 | |
| 113 static void pkey_dsa_cleanup(EVP_PKEY_CTX *ctx) | |
| 114 { | |
| 115 DSA_PKEY_CTX *dctx = ctx->data; | |
| 116 if (dctx) | |
| 117 OPENSSL_free(dctx); | |
| 118 } | |
| 119 | |
| 120 static int pkey_dsa_sign(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen, | |
| 121 const unsigned char *tbs, size_t tbslen) | |
| 122 { | |
| 123 int ret, type; | |
| 124 unsigned int sltmp; | |
| 125 DSA_PKEY_CTX *dctx = ctx->data; | |
| 126 DSA *dsa = ctx->pkey->pkey.dsa; | |
| 127 | |
| 128 if (dctx->md) | |
| 129 type = EVP_MD_type(dctx->md); | |
| 130 else | |
| 131 type = NID_sha1; | |
| 132 | |
| 133 ret = DSA_sign(type, tbs, tbslen, sig, &sltmp, dsa); | |
| 134 | |
| 135 if (ret <= 0) | |
| 136 return ret; | |
| 137 *siglen = sltmp; | |
| 138 return 1; | |
| 139 } | |
| 140 | |
| 141 static int pkey_dsa_verify(EVP_PKEY_CTX *ctx, | |
| 142 const unsigned char *sig, size_t siglen, | |
| 143 const unsigned char *tbs, size_t tbslen) | |
| 144 { | |
| 145 int ret, type; | |
| 146 DSA_PKEY_CTX *dctx = ctx->data; | |
| 147 DSA *dsa = ctx->pkey->pkey.dsa; | |
| 148 | |
| 149 if (dctx->md) | |
| 150 type = EVP_MD_type(dctx->md); | |
| 151 else | |
| 152 type = NID_sha1; | |
| 153 | |
| 154 ret = DSA_verify(type, tbs, tbslen, sig, siglen, dsa); | |
| 155 | |
| 156 return ret; | |
| 157 } | |
| 158 | |
| 159 static int pkey_dsa_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2) | |
| 160 { | |
| 161 DSA_PKEY_CTX *dctx = ctx->data; | |
| 162 switch (type) | |
| 163 { | |
| 164 case EVP_PKEY_CTRL_DSA_PARAMGEN_BITS: | |
| 165 if (p1 < 256) | |
| 166 return -2; | |
| 167 dctx->nbits = p1; | |
| 168 return 1; | |
| 169 | |
| 170 case EVP_PKEY_CTRL_DSA_PARAMGEN_Q_BITS: | |
| 171 if (p1 != 160 && p1 != 224 && p1 && p1 != 256) | |
| 172 return -2; | |
| 173 dctx->qbits = p1; | |
| 174 return 1; | |
| 175 | |
| 176 case EVP_PKEY_CTRL_DSA_PARAMGEN_MD: | |
| 177 if (EVP_MD_type((const EVP_MD *)p2) != NID_sha1 && | |
| 178 EVP_MD_type((const EVP_MD *)p2) != NID_sha224 && | |
| 179 EVP_MD_type((const EVP_MD *)p2) != NID_sha256) | |
| 180 { | |
| 181 DSAerr(DSA_F_PKEY_DSA_CTRL, DSA_R_INVALID_DIGEST_TYPE); | |
| 182 return 0; | |
| 183 } | |
| 184 dctx->md = p2; | |
| 185 return 1; | |
| 186 | |
| 187 case EVP_PKEY_CTRL_MD: | |
| 188 if (EVP_MD_type((const EVP_MD *)p2) != NID_sha1 && | |
| 189 EVP_MD_type((const EVP_MD *)p2) != NID_dsa && | |
| 190 EVP_MD_type((const EVP_MD *)p2) != NID_dsaWithSHA && | |
| 191 EVP_MD_type((const EVP_MD *)p2) != NID_sha224 && | |
| 192 EVP_MD_type((const EVP_MD *)p2) != NID_sha256 && | |
| 193 EVP_MD_type((const EVP_MD *)p2) != NID_sha384 && | |
| 194 EVP_MD_type((const EVP_MD *)p2) != NID_sha512) | |
| 195 { | |
| 196 DSAerr(DSA_F_PKEY_DSA_CTRL, DSA_R_INVALID_DIGEST_TYPE); | |
| 197 return 0; | |
| 198 } | |
| 199 dctx->md = p2; | |
| 200 return 1; | |
| 201 | |
| 202 case EVP_PKEY_CTRL_DIGESTINIT: | |
| 203 case EVP_PKEY_CTRL_PKCS7_SIGN: | |
| 204 case EVP_PKEY_CTRL_CMS_SIGN: | |
| 205 return 1; | |
| 206 | |
| 207 case EVP_PKEY_CTRL_PEER_KEY: | |
| 208 DSAerr(DSA_F_PKEY_DSA_CTRL, | |
| 209 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); | |
| 210 return -2; | |
| 211 default: | |
| 212 return -2; | |
| 213 | |
| 214 } | |
| 215 } | |
| 216 | |
| 217 static int pkey_dsa_ctrl_str(EVP_PKEY_CTX *ctx, | |
| 218 const char *type, const char *value) | |
| 219 { | |
| 220 if (!strcmp(type, "dsa_paramgen_bits")) | |
| 221 { | |
| 222 int nbits; | |
| 223 nbits = atoi(value); | |
| 224 return EVP_PKEY_CTX_set_dsa_paramgen_bits(ctx, nbits); | |
| 225 } | |
| 226 if (!strcmp(type, "dsa_paramgen_q_bits")) | |
| 227 { | |
| 228 int qbits = atoi(value); | |
| 229 return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DSA, EVP_PKEY_OP_PARAMGEN
, | |
| 230 EVP_PKEY_CTRL_DSA_PARAMGEN_Q_BITS, qbit
s, NULL); | |
| 231 } | |
| 232 if (!strcmp(type, "dsa_paramgen_md")) | |
| 233 { | |
| 234 return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DSA, EVP_PKEY_OP_PARAMGEN
, | |
| 235 EVP_PKEY_CTRL_DSA_PARAMGEN_MD, 0, | |
| 236 (void *)EVP_get_digestbyname(value)); | |
| 237 } | |
| 238 return -2; | |
| 239 } | |
| 240 | |
| 241 static int pkey_dsa_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey) | |
| 242 { | |
| 243 DSA *dsa = NULL; | |
| 244 DSA_PKEY_CTX *dctx = ctx->data; | |
| 245 BN_GENCB *pcb, cb; | |
| 246 int ret; | |
| 247 if (ctx->pkey_gencb) | |
| 248 { | |
| 249 pcb = &cb; | |
| 250 evp_pkey_set_cb_translate(pcb, ctx); | |
| 251 } | |
| 252 else | |
| 253 pcb = NULL; | |
| 254 dsa = DSA_new(); | |
| 255 if (!dsa) | |
| 256 return 0; | |
| 257 ret = dsa_builtin_paramgen(dsa, dctx->nbits, dctx->qbits, dctx->pmd, | |
| 258 NULL, 0, NULL, NULL, NULL, pcb); | |
| 259 if (ret) | |
| 260 EVP_PKEY_assign_DSA(pkey, dsa); | |
| 261 else | |
| 262 DSA_free(dsa); | |
| 263 return ret; | |
| 264 } | |
| 265 | |
| 266 static int pkey_dsa_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey) | |
| 267 { | |
| 268 DSA *dsa = NULL; | |
| 269 if (ctx->pkey == NULL) | |
| 270 { | |
| 271 DSAerr(DSA_F_PKEY_DSA_KEYGEN, DSA_R_NO_PARAMETERS_SET); | |
| 272 return 0; | |
| 273 } | |
| 274 dsa = DSA_new(); | |
| 275 if (!dsa) | |
| 276 return 0; | |
| 277 EVP_PKEY_assign_DSA(pkey, dsa); | |
| 278 /* Note: if error return, pkey is freed by parent routine */ | |
| 279 if (!EVP_PKEY_copy_parameters(pkey, ctx->pkey)) | |
| 280 return 0; | |
| 281 return DSA_generate_key(pkey->pkey.dsa); | |
| 282 } | |
| 283 | |
| 284 const EVP_PKEY_METHOD dsa_pkey_meth = | |
| 285 { | |
| 286 EVP_PKEY_DSA, | |
| 287 EVP_PKEY_FLAG_AUTOARGLEN, | |
| 288 pkey_dsa_init, | |
| 289 pkey_dsa_copy, | |
| 290 pkey_dsa_cleanup, | |
| 291 | |
| 292 0, | |
| 293 pkey_dsa_paramgen, | |
| 294 | |
| 295 0, | |
| 296 pkey_dsa_keygen, | |
| 297 | |
| 298 0, | |
| 299 pkey_dsa_sign, | |
| 300 | |
| 301 0, | |
| 302 pkey_dsa_verify, | |
| 303 | |
| 304 0,0, | |
| 305 | |
| 306 0,0,0,0, | |
| 307 | |
| 308 0,0, | |
| 309 | |
| 310 0,0, | |
| 311 | |
| 312 0,0, | |
| 313 | |
| 314 pkey_dsa_ctrl, | |
| 315 pkey_dsa_ctrl_str | |
| 316 | |
| 317 | |
| 318 }; | |
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Chromium Code Reviews
Issue 2072073002:
Delete bundled copy of OpenSSL and replace with README. (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/openssl@master