Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 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) |