release/src/router/openssl/crypto/pem/pem_pkey.c

   1 /* crypto/pem/pem_pkey.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 "cryptlib.h"
  61 #include <openssl/buffer.h>
  62 #include <openssl/objects.h>
  63 #include <openssl/evp.h>
  64 #include <openssl/rand.h>
  65 #include <openssl/x509.h>
  66 #include <openssl/pkcs12.h>
  67 #include <openssl/pem.h>
  68 #ifndef OPENSSL_NO_ENGINE
  69 #include <openssl/engine.h>
  70 #endif
  71 #include "asn1_locl.h"
  72
  73 int pem_check_suffix(const char *pem_str, const char *suffix);
  74
  75 EVP_PKEY *PEM_read_bio_PrivateKey(BIO *bp, EVP_PKEY **x, pem_password_cb *cb, void *u)
  76         {
  77         char *nm=NULL;
  78         const unsigned char *p=NULL;
  79         unsigned char *data=NULL;
  80         long len;
  81         int slen;
  82         EVP_PKEY *ret=NULL;
  83
  84         if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_EVP_PKEY, bp, cb, u))
  85                 return NULL;
  86         p = data;
  87
  88         if (strcmp(nm,PEM_STRING_PKCS8INF) == 0) {
  89                 PKCS8_PRIV_KEY_INFO *p8inf;
  90                 p8inf=d2i_PKCS8_PRIV_KEY_INFO(NULL, &p, len);
  91                 if(!p8inf) goto p8err;
  92                 ret = EVP_PKCS82PKEY(p8inf);
  93                 if(x) {
  94                         if(*x) EVP_PKEY_free((EVP_PKEY *)*x);
  95                         *x = ret;
  96                 }
  97                 PKCS8_PRIV_KEY_INFO_free(p8inf);
  98         } else if (strcmp(nm,PEM_STRING_PKCS8) == 0) {
  99                 PKCS8_PRIV_KEY_INFO *p8inf;
 100                 X509_SIG *p8;
 101                 int klen;
 102                 char psbuf[PEM_BUFSIZE];
 103                 p8 = d2i_X509_SIG(NULL, &p, len);
 104                 if(!p8) goto p8err;
 105                 if (cb) klen=cb(psbuf,PEM_BUFSIZE,0,u);
 106                 else klen=PEM_def_callback(psbuf,PEM_BUFSIZE,0,u);
 107                 if (klen <= 0) {
 108                         PEMerr(PEM_F_PEM_READ_BIO_PRIVATEKEY,
 109                                         PEM_R_BAD_PASSWORD_READ);
 110                         X509_SIG_free(p8);
 111                         goto err;
 112                 }
 113                 p8inf = PKCS8_decrypt(p8, psbuf, klen);
 114                 X509_SIG_free(p8);
 115                 if(!p8inf) goto p8err;
 116                 ret = EVP_PKCS82PKEY(p8inf);
 117                 if(x) {
 118                         if(*x) EVP_PKEY_free((EVP_PKEY *)*x);
 119                         *x = ret;
 120                 }
 121                 PKCS8_PRIV_KEY_INFO_free(p8inf);
 122         } else if ((slen = pem_check_suffix(nm, "PRIVATE KEY")) > 0)
 123                 {
 124                 const EVP_PKEY_ASN1_METHOD *ameth;
 125                 ameth = EVP_PKEY_asn1_find_str(NULL, nm, slen);
 126                 if (!ameth || !ameth->old_priv_decode)
 127                         goto p8err;
 128                 ret=d2i_PrivateKey(ameth->pkey_id,x,&p,len);
 129                 }
 130 p8err:
 131         if (ret == NULL)
 132                 PEMerr(PEM_F_PEM_READ_BIO_PRIVATEKEY,ERR_R_ASN1_LIB);
 133 err:
 134         OPENSSL_free(nm);
 135         OPENSSL_cleanse(data, len);
 136         OPENSSL_free(data);
 137         return(ret);
 138         }
 139
 140 int PEM_write_bio_PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
 141                                                unsigned char *kstr, int klen,
 142                                                pem_password_cb *cb, void *u)
 143         {
 144         char pem_str[80];
 145         if (!x->ameth || x->ameth->priv_encode)
 146                 return PEM_write_bio_PKCS8PrivateKey(bp, x, enc,
 147                                                         (char *)kstr, klen,
 148                                                         cb, u);
 149
 150         BIO_snprintf(pem_str, 80, "%s PRIVATE KEY", x->ameth->pem_str);
 151         return PEM_ASN1_write_bio((i2d_of_void *)i2d_PrivateKey,
 152                                 pem_str,bp,x,enc,kstr,klen,cb,u);
 153         }
 154
 155 EVP_PKEY *PEM_read_bio_Parameters(BIO *bp, EVP_PKEY **x)
 156         {
 157         char *nm=NULL;
 158         const unsigned char *p=NULL;
 159         unsigned char *data=NULL;
 160         long len;
 161         int slen;
 162         EVP_PKEY *ret=NULL;
 163
 164         if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_PARAMETERS,
 165                                                                 bp, 0, NULL))
 166                 return NULL;
 167         p = data;
 168
 169         if ((slen = pem_check_suffix(nm, "PARAMETERS")) > 0)
 170                 {
 171                 ret = EVP_PKEY_new();
 172                 if (!ret)
 173                         goto err;
 174                 if (!EVP_PKEY_set_type_str(ret, nm, slen)
 175                         || !ret->ameth->param_decode
 176                         || !ret->ameth->param_decode(ret, &p, len))
 177                         {
 178                         EVP_PKEY_free(ret);
 179                         ret = NULL;
 180                         goto err;
 181                         }
 182                 if(x)
 183                         {
 184                         if(*x) EVP_PKEY_free((EVP_PKEY *)*x);
 185                         *x = ret;
 186                         }
 187                 }
 188 err:
 189         if (ret == NULL)
 190                 PEMerr(PEM_F_PEM_READ_BIO_PARAMETERS,ERR_R_ASN1_LIB);
 191         OPENSSL_free(nm);
 192         OPENSSL_free(data);
 193         return(ret);
 194         }
 195
 196 int PEM_write_bio_Parameters(BIO *bp, EVP_PKEY *x)
 197         {
 198         char pem_str[80];
 199         if (!x->ameth || !x->ameth->param_encode)
 200                 return 0;
 201
 202         BIO_snprintf(pem_str, 80, "%s PARAMETERS", x->ameth->pem_str);
 203         return PEM_ASN1_write_bio(
 204                 (i2d_of_void *)x->ameth->param_encode,
 205                                 pem_str,bp,x,NULL,NULL,0,0,NULL);
 206         }
 207
 208 #ifndef OPENSSL_NO_FP_API
 209 EVP_PKEY *PEM_read_PrivateKey(FILE *fp, EVP_PKEY **x, pem_password_cb *cb, void *u)
 210         {
 211         BIO *b;
 212         EVP_PKEY *ret;
 213
 214         if ((b=BIO_new(BIO_s_file())) == NULL)
 215                 {
 216                 PEMerr(PEM_F_PEM_READ_PRIVATEKEY,ERR_R_BUF_LIB);
 217                 return(0);
 218                 }
 219         BIO_set_fp(b,fp,BIO_NOCLOSE);
 220         ret=PEM_read_bio_PrivateKey(b,x,cb,u);
 221         BIO_free(b);
 222         return(ret);
 223         }
 224
 225 int PEM_write_PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
 226                                                unsigned char *kstr, int klen,
 227                                                pem_password_cb *cb, void *u)
 228         {
 229         BIO *b;
 230         int ret;
 231
 232         if ((b=BIO_new_fp(fp, BIO_NOCLOSE)) == NULL)
 233                 {
 234                 PEMerr(PEM_F_PEM_WRITE_PRIVATEKEY,ERR_R_BUF_LIB);
 235                 return 0;
 236                 }
 237         ret=PEM_write_bio_PrivateKey(b, x, enc, kstr, klen, cb, u);
 238         BIO_free(b);
 239         return ret;
 240         }
 241
 242 #endif