crypto/evp/pmeth_fn.c

   1 /* pmeth_fn.c */
   2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
   3  * project 2006.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 2006 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 <stdlib.h>
  61 #include <openssl/objects.h>
  62 #include "cryptlib.h"
  63 #include <openssl/evp.h>
  64 #include "evp_locl.h"
  65
  66 int EVP_PKEY_sign_init(EVP_PKEY_CTX *ctx)
  67         {
  68         int ret;
  69         if (!ctx || !ctx->pmeth || !ctx->pmeth->sign)
  70                 {
  71                 EVPerr(EVP_F_EVP_PKEY_SIGN_INIT,
  72                         EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
  73                 return -2;
  74                 }
  75         ctx->operation = EVP_PKEY_OP_SIGN;
  76         if (!ctx->pmeth->sign_init)
  77                 return 1;
  78         ret = ctx->pmeth->sign_init(ctx);
  79         if (ret <= 0)
  80                 ctx->operation = EVP_PKEY_OP_UNDEFINED;
  81         return ret;
  82         }
  83
  84 int EVP_PKEY_sign(EVP_PKEY_CTX *ctx,
  85                         unsigned char *sig, int *siglen,
  86                         unsigned char *tbs, int tbslen)
  87         {
  88         if (!ctx || !ctx->pmeth || !ctx->pmeth->sign)
  89                 {
  90                 EVPerr(EVP_F_EVP_PKEY_SIGN,
  91                         EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
  92                 return -2;
  93                 }
  94         if (ctx->operation != EVP_PKEY_OP_SIGN)
  95                 {
  96                 EVPerr(EVP_F_EVP_PKEY_SIGN, EVP_R_OPERATON_NOT_INITIALIZED);
  97                 return -1;
  98                 }
  99         return ctx->pmeth->sign(ctx, sig, siglen, tbs, tbslen);
 100         }
 101
 102 int EVP_PKEY_verify_init(EVP_PKEY_CTX *ctx)
 103         {
 104         int ret;
 105         if (!ctx || !ctx->pmeth || !ctx->pmeth->verify)
 106                 {
 107                 EVPerr(EVP_F_EVP_PKEY_VERIFY_INIT,
 108                         EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
 109                 return -2;
 110                 }
 111         ctx->operation = EVP_PKEY_OP_VERIFY;
 112         if (!ctx->pmeth->verify_init)
 113                 return 1;
 114         ret = ctx->pmeth->verify_init(ctx);
 115         if (ret <= 0)
 116                 ctx->operation = EVP_PKEY_OP_UNDEFINED;
 117         return ret;
 118         }
 119
 120 int EVP_PKEY_verify(EVP_PKEY_CTX *ctx,
 121                         unsigned char *sig, int siglen,
 122                         unsigned char *tbs, int tbslen)
 123         {
 124         if (!ctx || !ctx->pmeth || !ctx->pmeth->verify)
 125                 {
 126                 EVPerr(EVP_F_EVP_PKEY_VERIFY,
 127                         EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
 128                 return -2;
 129                 }
 130         if (ctx->operation != EVP_PKEY_OP_VERIFY)
 131                 {
 132                 EVPerr(EVP_F_EVP_PKEY_VERIFY, EVP_R_OPERATON_NOT_INITIALIZED);
 133                 return -1;
 134                 }
 135         return ctx->pmeth->verify(ctx, sig, siglen, tbs, tbslen);
 136         }
 137
 138 int EVP_PKEY_verify_recover_init(EVP_PKEY_CTX *ctx)
 139         {
 140         int ret;
 141         if (!ctx || !ctx->pmeth || !ctx->pmeth->verify_recover)
 142                 {
 143                 EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER_INIT,
 144                         EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
 145                 return -2;
 146                 }
 147         ctx->operation = EVP_PKEY_OP_VERIFYRECOVER;
 148         if (!ctx->pmeth->verify_recover_init)
 149                 return 1;
 150         ret = ctx->pmeth->verify_recover_init(ctx);
 151         if (ret <= 0)
 152                 ctx->operation = EVP_PKEY_OP_UNDEFINED;
 153         return ret;
 154         }
 155
 156 int EVP_PKEY_verify_recover(EVP_PKEY_CTX *ctx,
 157                         unsigned char *rout, int *routlen,
 158                         unsigned char *sig, int siglen)
 159         {
 160         if (!ctx || !ctx->pmeth || !ctx->pmeth->verify_recover)
 161                 {
 162                 EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER,
 163                         EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
 164                 return -2;
 165                 }
 166         if (ctx->operation != EVP_PKEY_OP_VERIFYRECOVER)
 167                 {
 168                 EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER, EVP_R_OPERATON_NOT_INITIALIZED);
 169                 return -1;
 170                 }
 171         return ctx->pmeth->verify_recover(ctx, rout, routlen, sig, siglen);
 172         }
 173
 174 int EVP_PKEY_encrypt_init(EVP_PKEY_CTX *ctx)
 175         {
 176         int ret;
 177         if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt)
 178                 {
 179                 EVPerr(EVP_F_EVP_PKEY_ENCRYPT_INIT,
 180                         EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
 181                 return -2;
 182                 }
 183         ctx->operation = EVP_PKEY_OP_ENCRYPT;
 184         if (!ctx->pmeth->encrypt_init)
 185                 return 1;
 186         ret = ctx->pmeth->encrypt_init(ctx);
 187         if (ret <= 0)
 188                 ctx->operation = EVP_PKEY_OP_UNDEFINED;
 189         return ret;
 190         }
 191
 192 int EVP_PKEY_encrypt(EVP_PKEY_CTX *ctx,
 193                         unsigned char *out, int *outlen,
 194                         unsigned char *in, int inlen)
 195         {
 196         if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt)
 197                 {
 198                 EVPerr(EVP_F_EVP_PKEY_ENCRYPT,
 199                         EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
 200                 return -2;
 201                 }
 202         if (ctx->operation != EVP_PKEY_OP_ENCRYPT)
 203                 {
 204                 EVPerr(EVP_F_EVP_PKEY_ENCRYPT, EVP_R_OPERATON_NOT_INITIALIZED);
 205                 return -1;
 206                 }
 207         return ctx->pmeth->encrypt(ctx, out, outlen, in, inlen);
 208         }
 209
 210 int EVP_PKEY_decrypt_init(EVP_PKEY_CTX *ctx)
 211         {
 212         int ret;
 213         if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt)
 214                 {
 215                 EVPerr(EVP_F_EVP_PKEY_DECRYPT_INIT,
 216                         EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
 217                 return -2;
 218                 }
 219         ctx->operation = EVP_PKEY_OP_DECRYPT;
 220         if (!ctx->pmeth->decrypt_init)
 221                 return 1;
 222         ret = ctx->pmeth->decrypt_init(ctx);
 223         if (ret <= 0)
 224                 ctx->operation = EVP_PKEY_OP_UNDEFINED;
 225         return ret;
 226         }
 227
 228 int EVP_PKEY_decrypt(EVP_PKEY_CTX *ctx,
 229                         unsigned char *out, int *outlen,
 230                         unsigned char *in, int inlen)
 231         {
 232         if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt)
 233                 {
 234                 EVPerr(EVP_F_EVP_PKEY_DECRYPT,
 235                         EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
 236                 return -2;
 237                 }
 238         if (ctx->operation != EVP_PKEY_OP_DECRYPT)
 239                 {
 240                 EVPerr(EVP_F_EVP_PKEY_DECRYPT, EVP_R_OPERATON_NOT_INITIALIZED);
 241                 return -1;
 242                 }
 243         return ctx->pmeth->decrypt(ctx, out, outlen, in, inlen);
 244         }
 245