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
  69
  70 EVP_PKEY *PEM_read_bio_PrivateKey(BIO *bp, EVP_PKEY **x, pem_password_cb *cb, void *u)
  71         {
  72         char *nm=NULL;
  73         unsigned char *p=NULL,*data=NULL;
  74         long len;
  75         EVP_PKEY *ret=NULL;
  76
  77         if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_EVP_PKEY, bp, cb, u))
  78                 return NULL;
  79         p = data;
  80
  81         if (strcmp(nm,PEM_STRING_RSA) == 0)
  82                 ret=d2i_PrivateKey(EVP_PKEY_RSA,x,&p,len);
  83         else if (strcmp(nm,PEM_STRING_DSA) == 0)
  84                 ret=d2i_PrivateKey(EVP_PKEY_DSA,x,&p,len);
  85         else if (strcmp(nm,PEM_STRING_ECPRIVATEKEY) == 0)
  86                 ret=d2i_PrivateKey(EVP_PKEY_EC,x,&p,len);
  87         else if (strcmp(nm,PEM_STRING_PKCS8INF) == 0) {
  88                 PKCS8_PRIV_KEY_INFO *p8inf;
  89                 p8inf=d2i_PKCS8_PRIV_KEY_INFO(NULL, &p, len);
  90                 if(!p8inf) goto p8err;
  91                 ret = EVP_PKCS82PKEY(p8inf);
  92                 PKCS8_PRIV_KEY_INFO_free(p8inf);
  93         } else if (strcmp(nm,PEM_STRING_PKCS8) == 0) {
  94                 PKCS8_PRIV_KEY_INFO *p8inf;
  95                 X509_SIG *p8;
  96                 int klen;
  97                 char psbuf[PEM_BUFSIZE];
  98                 p8 = d2i_X509_SIG(NULL, &p, len);
  99                 if(!p8) goto p8err;
 100                 if (cb) klen=cb(psbuf,PEM_BUFSIZE,0,u);
 101                 else klen=PEM_def_callback(psbuf,PEM_BUFSIZE,0,u);
 102                 if (klen <= 0) {
 103                         PEMerr(PEM_F_PEM_ASN1_READ_BIO,
 104                                         PEM_R_BAD_PASSWORD_READ);
 105                         goto err;
 106                 }
 107                 p8inf = PKCS8_decrypt(p8, psbuf, klen);
 108                 X509_SIG_free(p8);
 109                 if(!p8inf) goto p8err;
 110                 ret = EVP_PKCS82PKEY(p8inf);
 111                 if(x) {
 112                         if(*x) EVP_PKEY_free((EVP_PKEY *)*x);
 113                         *x = ret;
 114                 }
 115                 PKCS8_PRIV_KEY_INFO_free(p8inf);
 116         }
 117 p8err:
 118         if (ret == NULL)
 119                 PEMerr(PEM_F_PEM_ASN1_READ_BIO,ERR_R_ASN1_LIB);
 120 err:
 121         OPENSSL_free(nm);
 122         OPENSSL_free(data);
 123         return(ret);
 124         }
 125
 126 #ifndef OPENSSL_NO_FP_API
 127 EVP_PKEY *PEM_read_PrivateKey(FILE *fp, EVP_PKEY **x, pem_password_cb *cb, void *u)
 128         {
 129         BIO *b;
 130         EVP_PKEY *ret;
 131
 132         if ((b=BIO_new(BIO_s_file())) == NULL)
 133                 {
 134                 PEMerr(PEM_F_PEM_ASN1_READ,ERR_R_BUF_LIB);
 135                 return(0);
 136                 }
 137         BIO_set_fp(b,fp,BIO_NOCLOSE);
 138         ret=PEM_read_bio_PrivateKey(b,x,cb,u);
 139         BIO_free(b);
 140         return(ret);
 141         }
 142 #endif