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| 1 /* crypto/dsa/dsa_key.c */ | |
| 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | |
| 3 * All rights reserved. | |
| 4 * | |
| 5 * This package is an SSL implementation written | |
| 6 * by Eric Young (eay@cryptsoft.com). | |
| 7 * The implementation was written so as to conform with Netscapes SSL. | |
| 8 * | |
| 9 * This library is free for commercial and non-commercial use as long as | |
| 10 * the following conditions are aheared to. The following conditions | |
| 11 * apply to all code found in this distribution, be it the RC4, RSA, | |
| 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
| 13 * included with this distribution is covered by the same copyright terms | |
| 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
| 15 * | |
| 16 * Copyright remains Eric Young's, and as such any Copyright notices in | |
| 17 * the code are not to be removed. | |
| 18 * If this package is used in a product, Eric Young should be given attribution | |
| 19 * as the author of the parts of the library used. | |
| 20 * This can be in the form of a textual message at program startup or | |
| 21 * in documentation (online or textual) provided with the package. | |
| 22 * | |
| 23 * Redistribution and use in source and binary forms, with or without | |
| 24 * modification, are permitted provided that the following conditions | |
| 25 * are met: | |
| 26 * 1. Redistributions of source code must retain the copyright | |
| 27 * notice, this list of conditions and the following disclaimer. | |
| 28 * 2. Redistributions in binary form must reproduce the above copyright | |
| 29 * notice, this list of conditions and the following disclaimer in the | |
| 30 * documentation and/or other materials provided with the distribution. | |
| 31 * 3. All advertising materials mentioning features or use of this software | |
| 32 * must display the following acknowledgement: | |
| 33 * "This product includes cryptographic software written by | |
| 34 * Eric Young (eay@cryptsoft.com)" | |
| 35 * The word 'cryptographic' can be left out if the rouines from the library | |
| 36 * being used are not cryptographic related :-). | |
| 37 * 4. If you include any Windows specific code (or a derivative thereof) from | |
| 38 * the apps directory (application code) you must include an acknowledgement: | |
| 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
| 40 * | |
| 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |
| 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
| 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 51 * SUCH DAMAGE. | |
| 52 * | |
| 53 * The licence and distribution terms for any publically available version or | |
| 54 * derivative of this code cannot be changed. i.e. this code cannot simply be | |
| 55 * copied and put under another distribution licence | |
| 56 * [including the GNU Public Licence.] | |
| 57 */ | |
| 58 | |
| 59 #include <stdio.h> | |
| 60 #include <time.h> | |
| 61 #ifndef OPENSSL_NO_SHA | |
| 62 #include <openssl/bn.h> | |
| 63 #include <openssl/dsa.h> | |
| 64 #include <openssl/rand.h> | |
| 65 #include <openssl/err.h> | |
| 66 #include <openssl/evp.h> | |
| 67 #include <openssl/fips.h> | |
| 68 #include "fips_locl.h" | |
| 69 | |
| 70 #ifdef OPENSSL_FIPS | |
| 71 | |
| 72 static int fips_dsa_pairwise_fail = 0; | |
| 73 | |
| 74 void FIPS_corrupt_dsa_keygen(void) | |
| 75 { | |
| 76 fips_dsa_pairwise_fail = 1; | |
| 77 } | |
| 78 | |
| 79 static int dsa_builtin_keygen(DSA *dsa); | |
| 80 | |
| 81 static int fips_check_dsa(DSA *dsa) | |
| 82 { | |
| 83 EVP_PKEY pk; | |
| 84 unsigned char tbs[] = "DSA Pairwise Check Data"; | |
| 85 pk.type = EVP_PKEY_DSA; | |
| 86 pk.pkey.dsa = dsa; | |
| 87 | |
| 88 if (!fips_pkey_signature_test(&pk, tbs, -1, | |
| 89 NULL, 0, EVP_dss1(), 0, NULL)) | |
| 90 { | |
| 91 FIPSerr(FIPS_F_FIPS_CHECK_DSA,FIPS_R_PAIRWISE_TEST_FAILED); | |
| 92 fips_set_selftest_fail(); | |
| 93 return 0; | |
| 94 } | |
| 95 return 1; | |
| 96 } | |
| 97 | |
| 98 int DSA_generate_key(DSA *dsa) | |
| 99 { | |
| 100 if(dsa->meth->dsa_keygen) | |
| 101 return dsa->meth->dsa_keygen(dsa); | |
| 102 return dsa_builtin_keygen(dsa); | |
| 103 } | |
| 104 | |
| 105 static int dsa_builtin_keygen(DSA *dsa) | |
| 106 { | |
| 107 int ok=0; | |
| 108 BN_CTX *ctx=NULL; | |
| 109 BIGNUM *pub_key=NULL,*priv_key=NULL; | |
| 110 | |
| 111 if (FIPS_mode() && (BN_num_bits(dsa->p) < OPENSSL_DSA_FIPS_MIN_MODULUS_B
ITS)) | |
| 112 { | |
| 113 DSAerr(DSA_F_DSA_BUILTIN_KEYGEN, DSA_R_KEY_SIZE_TOO_SMALL); | |
| 114 goto err; | |
| 115 } | |
| 116 | |
| 117 if ((ctx=BN_CTX_new()) == NULL) goto err; | |
| 118 | |
| 119 if (dsa->priv_key == NULL) | |
| 120 { | |
| 121 if ((priv_key=BN_new()) == NULL) goto err; | |
| 122 } | |
| 123 else | |
| 124 priv_key=dsa->priv_key; | |
| 125 | |
| 126 do | |
| 127 if (!BN_rand_range(priv_key,dsa->q)) goto err; | |
| 128 while (BN_is_zero(priv_key)); | |
| 129 | |
| 130 if (dsa->pub_key == NULL) | |
| 131 { | |
| 132 if ((pub_key=BN_new()) == NULL) goto err; | |
| 133 } | |
| 134 else | |
| 135 pub_key=dsa->pub_key; | |
| 136 | |
| 137 { | |
| 138 BIGNUM local_prk; | |
| 139 BIGNUM *prk; | |
| 140 | |
| 141 if ((dsa->flags & DSA_FLAG_NO_EXP_CONSTTIME) == 0) | |
| 142 { | |
| 143 BN_init(&local_prk); | |
| 144 prk = &local_prk; | |
| 145 BN_with_flags(prk, priv_key, BN_FLG_CONSTTIME); | |
| 146 } | |
| 147 else | |
| 148 prk = priv_key; | |
| 149 | |
| 150 if (!BN_mod_exp(pub_key,dsa->g,prk,dsa->p,ctx)) goto err; | |
| 151 } | |
| 152 | |
| 153 dsa->priv_key=priv_key; | |
| 154 dsa->pub_key=pub_key; | |
| 155 if (fips_dsa_pairwise_fail) | |
| 156 BN_add_word(dsa->pub_key, 1); | |
| 157 if(!fips_check_dsa(dsa)) | |
| 158 goto err; | |
| 159 ok=1; | |
| 160 | |
| 161 err: | |
| 162 if ((pub_key != NULL) && (dsa->pub_key == NULL)) BN_free(pub_key); | |
| 163 if ((priv_key != NULL) && (dsa->priv_key == NULL)) BN_free(priv_key); | |
| 164 if (ctx != NULL) BN_CTX_free(ctx); | |
| 165 return(ok); | |
| 166 } | |
| 167 #endif | |
| 168 | |
| 169 #endif | |
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Chromium Code Reviews
Issue 9254031:
Upgrade chrome's OpenSSL to same version Android ships with. (Closed)
Base URL: http://src.chromium.org/svn/trunk/deps/third_party/openssl/