release/src/router/openssl/crypto/pem/pem_pk8.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 static int do_pk8pkey(BIO *bp, EVP_PKEY *x, int isder,
  70                                 int nid, const EVP_CIPHER *enc,
  71                                 char *kstr, int klen,
  72                                 pem_password_cb *cb, void *u);
  73 static int do_pk8pkey_fp(FILE *bp, EVP_PKEY *x, int isder,
  74                                 int nid, const EVP_CIPHER *enc,
  75                                 char *kstr, int klen,
  76                                 pem_password_cb *cb, void *u);
  77
  78 /* These functions write a private key in PKCS#8 format: it is a "drop in"
  79  * replacement for PEM_write_bio_PrivateKey() and friends. As usual if 'enc'
  80  * is NULL then it uses the unencrypted private key form. The 'nid' versions
  81  * uses PKCS#5 v1.5 PBE algorithms whereas the others use PKCS#5 v2.0.
  82  */
  83
  84 int PEM_write_bio_PKCS8PrivateKey_nid(BIO *bp, EVP_PKEY *x, int nid,
  85                                   char *kstr, int klen,
  86                                   pem_password_cb *cb, void *u)
  87 {
  88         return do_pk8pkey(bp, x, 0, nid, NULL, kstr, klen, cb, u);
  89 }
  90
  91 int PEM_write_bio_PKCS8PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
  92                                   char *kstr, int klen,
  93                                   pem_password_cb *cb, void *u)
  94 {
  95         return do_pk8pkey(bp, x, 0, -1, enc, kstr, klen, cb, u);
  96 }
  97
  98 int i2d_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
  99                                   char *kstr, int klen,
 100                                   pem_password_cb *cb, void *u)
 101 {
 102         return do_pk8pkey(bp, x, 1, -1, enc, kstr, klen, cb, u);
 103 }
 104
 105 int i2d_PKCS8PrivateKey_nid_bio(BIO *bp, EVP_PKEY *x, int nid,
 106                                   char *kstr, int klen,
 107                                   pem_password_cb *cb, void *u)
 108 {
 109         return do_pk8pkey(bp, x, 1, nid, NULL, kstr, klen, cb, u);
 110 }
 111
 112 static int do_pk8pkey(BIO *bp, EVP_PKEY *x, int isder, int nid, const EVP_CIPHER *enc,
 113                                   char *kstr, int klen,
 114                                   pem_password_cb *cb, void *u)
 115 {
 116         X509_SIG *p8;
 117         PKCS8_PRIV_KEY_INFO *p8inf;
 118         char buf[PEM_BUFSIZE];
 119         int ret;
 120         if(!(p8inf = EVP_PKEY2PKCS8(x))) {
 121                 PEMerr(PEM_F_DO_PK8PKEY,
 122                                         PEM_R_ERROR_CONVERTING_PRIVATE_KEY);
 123                 return 0;
 124         }
 125         if(enc || (nid != -1)) {
 126                 if(!kstr) {
 127                         if(!cb) klen = PEM_def_callback(buf, PEM_BUFSIZE, 1, u);
 128                         else klen = cb(buf, PEM_BUFSIZE, 1, u);
 129                         if(klen <= 0) {
 130                                 PEMerr(PEM_F_DO_PK8PKEY,PEM_R_READ_KEY);
 131                                 PKCS8_PRIV_KEY_INFO_free(p8inf);
 132                                 return 0;
 133                         }
 134
 135                         kstr = buf;
 136                 }
 137                 p8 = PKCS8_encrypt(nid, enc, kstr, klen, NULL, 0, 0, p8inf);
 138                 if(kstr == buf) OPENSSL_cleanse(buf, klen);
 139                 PKCS8_PRIV_KEY_INFO_free(p8inf);
 140                 if(isder) ret = i2d_PKCS8_bio(bp, p8);
 141                 else ret = PEM_write_bio_PKCS8(bp, p8);
 142                 X509_SIG_free(p8);
 143                 return ret;
 144         } else {
 145                 if(isder) ret = i2d_PKCS8_PRIV_KEY_INFO_bio(bp, p8inf);
 146                 else ret = PEM_write_bio_PKCS8_PRIV_KEY_INFO(bp, p8inf);
 147                 PKCS8_PRIV_KEY_INFO_free(p8inf);
 148                 return ret;
 149         }
 150 }
 151
 152 EVP_PKEY *d2i_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY **x, pem_password_cb *cb, void *u)
 153 {
 154         PKCS8_PRIV_KEY_INFO *p8inf = NULL;
 155         X509_SIG *p8 = NULL;
 156         int klen;
 157         EVP_PKEY *ret;
 158         char psbuf[PEM_BUFSIZE];
 159         p8 = d2i_PKCS8_bio(bp, NULL);
 160         if(!p8) return NULL;
 161         if (cb) klen=cb(psbuf,PEM_BUFSIZE,0,u);
 162         else klen=PEM_def_callback(psbuf,PEM_BUFSIZE,0,u);
 163         if (klen <= 0) {
 164                 PEMerr(PEM_F_D2I_PKCS8PRIVATEKEY_BIO, PEM_R_BAD_PASSWORD_READ);
 165                 X509_SIG_free(p8);
 166                 return NULL;
 167         }
 168         p8inf = PKCS8_decrypt(p8, psbuf, klen);
 169         X509_SIG_free(p8);
 170         if(!p8inf) return NULL;
 171         ret = EVP_PKCS82PKEY(p8inf);
 172         PKCS8_PRIV_KEY_INFO_free(p8inf);
 173         if(!ret) return NULL;
 174         if(x) {
 175                 if(*x) EVP_PKEY_free(*x);
 176                 *x = ret;
 177         }
 178         return ret;
 179 }
 180
 181 #ifndef OPENSSL_NO_FP_API
 182
 183 int i2d_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
 184                                   char *kstr, int klen,
 185                                   pem_password_cb *cb, void *u)
 186 {
 187         return do_pk8pkey_fp(fp, x, 1, -1, enc, kstr, klen, cb, u);
 188 }
 189
 190 int i2d_PKCS8PrivateKey_nid_fp(FILE *fp, EVP_PKEY *x, int nid,
 191                                   char *kstr, int klen,
 192                                   pem_password_cb *cb, void *u)
 193 {
 194         return do_pk8pkey_fp(fp, x, 1, nid, NULL, kstr, klen, cb, u);
 195 }
 196
 197 int PEM_write_PKCS8PrivateKey_nid(FILE *fp, EVP_PKEY *x, int nid,
 198                                   char *kstr, int klen,
 199                                   pem_password_cb *cb, void *u)
 200 {
 201         return do_pk8pkey_fp(fp, x, 0, nid, NULL, kstr, klen, cb, u);
 202 }
 203
 204 int PEM_write_PKCS8PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
 205                               char *kstr, int klen, pem_password_cb *cb, void *u)
 206 {
 207         return do_pk8pkey_fp(fp, x, 0, -1, enc, kstr, klen, cb, u);
 208 }
 209
 210 static int do_pk8pkey_fp(FILE *fp, EVP_PKEY *x, int isder, int nid, const EVP_CIPHER *enc,
 211                                   char *kstr, int klen,
 212                                   pem_password_cb *cb, void *u)
 213 {
 214         BIO *bp;
 215         int ret;
 216         if(!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) {
 217                 PEMerr(PEM_F_DO_PK8PKEY_FP,ERR_R_BUF_LIB);
 218                 return(0);
 219         }
 220         ret = do_pk8pkey(bp, x, isder, nid, enc, kstr, klen, cb, u);
 221         BIO_free(bp);
 222         return ret;
 223 }
 224
 225 EVP_PKEY *d2i_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY **x, pem_password_cb *cb, void *u)
 226 {
 227         BIO *bp;
 228         EVP_PKEY *ret;
 229         if(!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) {
 230                 PEMerr(PEM_F_D2I_PKCS8PRIVATEKEY_FP,ERR_R_BUF_LIB);
 231                 return NULL;
 232         }
 233         ret = d2i_PKCS8PrivateKey_bio(bp, x, cb, u);
 234         BIO_free(bp);
 235         return ret;
 236 }
 237
 238 #endif
 239
 240 IMPLEMENT_PEM_rw(PKCS8, X509_SIG, PEM_STRING_PKCS8, X509_SIG)
 241 IMPLEMENT_PEM_rw(PKCS8_PRIV_KEY_INFO, PKCS8_PRIV_KEY_INFO, PEM_STRING_PKCS8INF,
 242                                                          PKCS8_PRIV_KEY_INFO)