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| 1 /* m_sigver.c */ | |
| 2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL | |
| 3 * project 2006. | |
| 4 */ | |
| 5 /* ==================================================================== | |
| 6 * Copyright (c) 2006,2007 The OpenSSL Project. All rights reserved. | |
| 7 * | |
| 8 * Redistribution and use in source and binary forms, with or without | |
| 9 * modification, are permitted provided that the following conditions | |
| 10 * are met: | |
| 11 * | |
| 12 * 1. Redistributions of source code must retain the above copyright | |
| 13 * notice, this list of conditions and the following disclaimer. | |
| 14 * | |
| 15 * 2. Redistributions in binary form must reproduce the above copyright | |
| 16 * notice, this list of conditions and the following disclaimer in | |
| 17 * the documentation and/or other materials provided with the | |
| 18 * distribution. | |
| 19 * | |
| 20 * 3. All advertising materials mentioning features or use of this | |
| 21 * software must display the following acknowledgment: | |
| 22 * "This product includes software developed by the OpenSSL Project | |
| 23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" | |
| 24 * | |
| 25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
| 26 * endorse or promote products derived from this software without | |
| 27 * prior written permission. For written permission, please contact | |
| 28 * licensing@OpenSSL.org. | |
| 29 * | |
| 30 * 5. Products derived from this software may not be called "OpenSSL" | |
| 31 * nor may "OpenSSL" appear in their names without prior written | |
| 32 * permission of the OpenSSL Project. | |
| 33 * | |
| 34 * 6. Redistributions of any form whatsoever must retain the following | |
| 35 * acknowledgment: | |
| 36 * "This product includes software developed by the OpenSSL Project | |
| 37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" | |
| 38 * | |
| 39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
| 40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
| 43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
| 45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
| 46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
| 48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
| 50 * OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 51 * ==================================================================== | |
| 52 * | |
| 53 * This product includes cryptographic software written by Eric Young | |
| 54 * (eay@cryptsoft.com). This product includes software written by Tim | |
| 55 * Hudson (tjh@cryptsoft.com). | |
| 56 * | |
| 57 */ | |
| 58 | |
| 59 #include <stdio.h> | |
| 60 #include "cryptlib.h" | |
| 61 #include <openssl/evp.h> | |
| 62 #include <openssl/objects.h> | |
| 63 #include <openssl/x509.h> | |
| 64 #include "evp_locl.h" | |
| 65 | |
| 66 static int do_sigver_init(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx, | |
| 67 const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey, | |
| 68 int ver) | |
| 69 { | |
| 70 if (ctx->pctx == NULL) | |
| 71 ctx->pctx = EVP_PKEY_CTX_new(pkey, e); | |
| 72 if (ctx->pctx == NULL) | |
| 73 return 0; | |
| 74 | |
| 75 if (type == NULL) | |
| 76 { | |
| 77 int def_nid; | |
| 78 if (EVP_PKEY_get_default_digest_nid(pkey, &def_nid) > 0) | |
| 79 type = EVP_get_digestbynid(def_nid); | |
| 80 } | |
| 81 | |
| 82 if (type == NULL) | |
| 83 { | |
| 84 EVPerr(EVP_F_DO_SIGVER_INIT, EVP_R_NO_DEFAULT_DIGEST); | |
| 85 return 0; | |
| 86 } | |
| 87 | |
| 88 if (ver) | |
| 89 { | |
| 90 if (ctx->pctx->pmeth->verifyctx_init) | |
| 91 { | |
| 92 if (ctx->pctx->pmeth->verifyctx_init(ctx->pctx, ctx) <=0
) | |
| 93 return 0; | |
| 94 ctx->pctx->operation = EVP_PKEY_OP_VERIFYCTX; | |
| 95 } | |
| 96 else if (EVP_PKEY_verify_init(ctx->pctx) <= 0) | |
| 97 return 0; | |
| 98 } | |
| 99 else | |
| 100 { | |
| 101 if (ctx->pctx->pmeth->signctx_init) | |
| 102 { | |
| 103 if (ctx->pctx->pmeth->signctx_init(ctx->pctx, ctx) <= 0) | |
| 104 return 0; | |
| 105 ctx->pctx->operation = EVP_PKEY_OP_SIGNCTX; | |
| 106 } | |
| 107 else if (EVP_PKEY_sign_init(ctx->pctx) <= 0) | |
| 108 return 0; | |
| 109 } | |
| 110 if (EVP_PKEY_CTX_set_signature_md(ctx->pctx, type) <= 0) | |
| 111 return 0; | |
| 112 if (pctx) | |
| 113 *pctx = ctx->pctx; | |
| 114 if (!EVP_DigestInit_ex(ctx, type, e)) | |
| 115 return 0; | |
| 116 return 1; | |
| 117 } | |
| 118 | |
| 119 int EVP_DigestSignInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx, | |
| 120 const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey) | |
| 121 { | |
| 122 return do_sigver_init(ctx, pctx, type, e, pkey, 0); | |
| 123 } | |
| 124 | |
| 125 int EVP_DigestVerifyInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx, | |
| 126 const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey) | |
| 127 { | |
| 128 return do_sigver_init(ctx, pctx, type, e, pkey, 1); | |
| 129 } | |
| 130 | |
| 131 int EVP_DigestSignFinal(EVP_MD_CTX *ctx, unsigned char *sigret, size_t *siglen) | |
| 132 { | |
| 133 int sctx, r = 0; | |
| 134 if (ctx->pctx->pmeth->signctx) | |
| 135 sctx = 1; | |
| 136 else | |
| 137 sctx = 0; | |
| 138 if (sigret) | |
| 139 { | |
| 140 EVP_MD_CTX tmp_ctx; | |
| 141 unsigned char md[EVP_MAX_MD_SIZE]; | |
| 142 unsigned int mdlen; | |
| 143 EVP_MD_CTX_init(&tmp_ctx); | |
| 144 if (!EVP_MD_CTX_copy_ex(&tmp_ctx,ctx)) | |
| 145 return 0; | |
| 146 if (sctx) | |
| 147 r = tmp_ctx.pctx->pmeth->signctx(tmp_ctx.pctx, | |
| 148 sigret, siglen, &tmp_ctx); | |
| 149 else | |
| 150 r = EVP_DigestFinal_ex(&tmp_ctx,md,&mdlen); | |
| 151 EVP_MD_CTX_cleanup(&tmp_ctx); | |
| 152 if (sctx || !r) | |
| 153 return r; | |
| 154 if (EVP_PKEY_sign(ctx->pctx, sigret, siglen, md, mdlen) <= 0) | |
| 155 return 0; | |
| 156 } | |
| 157 else | |
| 158 { | |
| 159 if (sctx) | |
| 160 { | |
| 161 if (ctx->pctx->pmeth->signctx(ctx->pctx, sigret, siglen,
ctx) <= 0) | |
| 162 return 0; | |
| 163 } | |
| 164 else | |
| 165 { | |
| 166 int s = EVP_MD_size(ctx->digest); | |
| 167 if (s < 0 || EVP_PKEY_sign(ctx->pctx, sigret, siglen, NU
LL, s) <= 0) | |
| 168 return 0; | |
| 169 } | |
| 170 } | |
| 171 return 1; | |
| 172 } | |
| 173 | |
| 174 int EVP_DigestVerifyFinal(EVP_MD_CTX *ctx, unsigned char *sig, size_t siglen) | |
| 175 { | |
| 176 EVP_MD_CTX tmp_ctx; | |
| 177 unsigned char md[EVP_MAX_MD_SIZE]; | |
| 178 int r; | |
| 179 unsigned int mdlen; | |
| 180 int vctx; | |
| 181 | |
| 182 if (ctx->pctx->pmeth->verifyctx) | |
| 183 vctx = 1; | |
| 184 else | |
| 185 vctx = 0; | |
| 186 EVP_MD_CTX_init(&tmp_ctx); | |
| 187 if (!EVP_MD_CTX_copy_ex(&tmp_ctx,ctx)) | |
| 188 return -1; | |
| 189 if (vctx) | |
| 190 { | |
| 191 r = tmp_ctx.pctx->pmeth->verifyctx(tmp_ctx.pctx, | |
| 192 sig, siglen, &tmp_ctx); | |
| 193 } | |
| 194 else | |
| 195 r = EVP_DigestFinal_ex(&tmp_ctx,md,&mdlen); | |
| 196 EVP_MD_CTX_cleanup(&tmp_ctx); | |
| 197 if (vctx || !r) | |
| 198 return r; | |
| 199 return EVP_PKEY_verify(ctx->pctx, sig, siglen, md, mdlen); | |
| 200 } | |
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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