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| 1 /* crypto/pem/pem_seal.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 <openssl/opensslconf.h> /* for OPENSSL_NO_RSA */ | |
| 60 #ifndef OPENSSL_NO_RSA | |
| 61 #include <stdio.h> | |
| 62 #include "cryptlib.h" | |
| 63 #include <openssl/evp.h> | |
| 64 #include <openssl/rand.h> | |
| 65 #include <openssl/objects.h> | |
| 66 #include <openssl/x509.h> | |
| 67 #include <openssl/pem.h> | |
| 68 #include <openssl/rsa.h> | |
| 69 | |
| 70 int PEM_SealInit(PEM_ENCODE_SEAL_CTX *ctx, EVP_CIPHER *type, EVP_MD *md_type, | |
| 71 unsigned char **ek, int *ekl, unsigned char *iv, EVP_PKEY **pubk, | |
| 72 int npubk) | |
| 73 { | |
| 74 unsigned char key[EVP_MAX_KEY_LENGTH]; | |
| 75 int ret= -1; | |
| 76 int i,j,max=0; | |
| 77 char *s=NULL; | |
| 78 | |
| 79 for (i=0; i<npubk; i++) | |
| 80 { | |
| 81 if (pubk[i]->type != EVP_PKEY_RSA) | |
| 82 { | |
| 83 PEMerr(PEM_F_PEM_SEALINIT,PEM_R_PUBLIC_KEY_NO_RSA); | |
| 84 goto err; | |
| 85 } | |
| 86 j=RSA_size(pubk[i]->pkey.rsa); | |
| 87 if (j > max) max=j; | |
| 88 } | |
| 89 s=(char *)OPENSSL_malloc(max*2); | |
| 90 if (s == NULL) | |
| 91 { | |
| 92 PEMerr(PEM_F_PEM_SEALINIT,ERR_R_MALLOC_FAILURE); | |
| 93 goto err; | |
| 94 } | |
| 95 | |
| 96 EVP_EncodeInit(&ctx->encode); | |
| 97 | |
| 98 EVP_MD_CTX_init(&ctx->md); | |
| 99 if (!EVP_SignInit(&ctx->md,md_type)) | |
| 100 goto err; | |
| 101 | |
| 102 EVP_CIPHER_CTX_init(&ctx->cipher); | |
| 103 ret=EVP_SealInit(&ctx->cipher,type,ek,ekl,iv,pubk,npubk); | |
| 104 if (ret <= 0) goto err; | |
| 105 | |
| 106 /* base64 encode the keys */ | |
| 107 for (i=0; i<npubk; i++) | |
| 108 { | |
| 109 j=EVP_EncodeBlock((unsigned char *)s,ek[i], | |
| 110 RSA_size(pubk[i]->pkey.rsa)); | |
| 111 ekl[i]=j; | |
| 112 memcpy(ek[i],s,j+1); | |
| 113 } | |
| 114 | |
| 115 ret=npubk; | |
| 116 err: | |
| 117 if (s != NULL) OPENSSL_free(s); | |
| 118 OPENSSL_cleanse(key,EVP_MAX_KEY_LENGTH); | |
| 119 return(ret); | |
| 120 } | |
| 121 | |
| 122 void PEM_SealUpdate(PEM_ENCODE_SEAL_CTX *ctx, unsigned char *out, int *outl, | |
| 123 unsigned char *in, int inl) | |
| 124 { | |
| 125 unsigned char buffer[1600]; | |
| 126 int i,j; | |
| 127 | |
| 128 *outl=0; | |
| 129 EVP_SignUpdate(&ctx->md,in,inl); | |
| 130 for (;;) | |
| 131 { | |
| 132 if (inl <= 0) break; | |
| 133 if (inl > 1200) | |
| 134 i=1200; | |
| 135 else | |
| 136 i=inl; | |
| 137 EVP_EncryptUpdate(&ctx->cipher,buffer,&j,in,i); | |
| 138 EVP_EncodeUpdate(&ctx->encode,out,&j,buffer,j); | |
| 139 *outl+=j; | |
| 140 out+=j; | |
| 141 in+=i; | |
| 142 inl-=i; | |
| 143 } | |
| 144 } | |
| 145 | |
| 146 int PEM_SealFinal(PEM_ENCODE_SEAL_CTX *ctx, unsigned char *sig, int *sigl, | |
| 147 unsigned char *out, int *outl, EVP_PKEY *priv) | |
| 148 { | |
| 149 unsigned char *s=NULL; | |
| 150 int ret=0,j; | |
| 151 unsigned int i; | |
| 152 | |
| 153 if (priv->type != EVP_PKEY_RSA) | |
| 154 { | |
| 155 PEMerr(PEM_F_PEM_SEALFINAL,PEM_R_PUBLIC_KEY_NO_RSA); | |
| 156 goto err; | |
| 157 } | |
| 158 i=RSA_size(priv->pkey.rsa); | |
| 159 if (i < 100) i=100; | |
| 160 s=(unsigned char *)OPENSSL_malloc(i*2); | |
| 161 if (s == NULL) | |
| 162 { | |
| 163 PEMerr(PEM_F_PEM_SEALFINAL,ERR_R_MALLOC_FAILURE); | |
| 164 goto err; | |
| 165 } | |
| 166 | |
| 167 if (!EVP_EncryptFinal_ex(&ctx->cipher,s,(int *)&i)) | |
| 168 goto err; | |
| 169 EVP_EncodeUpdate(&ctx->encode,out,&j,s,i); | |
| 170 *outl=j; | |
| 171 out+=j; | |
| 172 EVP_EncodeFinal(&ctx->encode,out,&j); | |
| 173 *outl+=j; | |
| 174 | |
| 175 if (!EVP_SignFinal(&ctx->md,s,&i,priv)) goto err; | |
| 176 *sigl=EVP_EncodeBlock(sig,s,i); | |
| 177 | |
| 178 ret=1; | |
| 179 err: | |
| 180 EVP_MD_CTX_cleanup(&ctx->md); | |
| 181 EVP_CIPHER_CTX_cleanup(&ctx->cipher); | |
| 182 if (s != NULL) OPENSSL_free(s); | |
| 183 return(ret); | |
| 184 } | |
| 185 #else /* !OPENSSL_NO_RSA */ | |
| 186 | |
| 187 # if PEDANTIC | |
| 188 static void *dummy=&dummy; | |
| 189 # endif | |
| 190 | |
| 191 #endif | |
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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