pem_pk8.c revision 109998
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 69static 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); 73static 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 84int 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 91int 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 98int 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 105int 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 112static 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_PEM_WRITE_BIO_PKCS8PRIVATEKEY, 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_PEM_WRITE_BIO_PKCS8PRIVATEKEY, 131 PEM_R_READ_KEY); 132 PKCS8_PRIV_KEY_INFO_free(p8inf); 133 return 0; 134 } 135 136 kstr = buf; 137 } 138 p8 = PKCS8_encrypt(nid, enc, kstr, klen, NULL, 0, 0, p8inf); 139 if(kstr == buf) OPENSSL_cleanse(buf, klen); 140 PKCS8_PRIV_KEY_INFO_free(p8inf); 141 if(isder) ret = i2d_PKCS8_bio(bp, p8); 142 else ret = PEM_write_bio_PKCS8(bp, p8); 143 X509_SIG_free(p8); 144 return ret; 145 } else { 146 if(isder) ret = i2d_PKCS8_PRIV_KEY_INFO_bio(bp, p8inf); 147 else ret = PEM_write_bio_PKCS8_PRIV_KEY_INFO(bp, p8inf); 148 PKCS8_PRIV_KEY_INFO_free(p8inf); 149 return ret; 150 } 151} 152 153EVP_PKEY *d2i_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY **x, pem_password_cb *cb, void *u) 154{ 155 PKCS8_PRIV_KEY_INFO *p8inf = NULL; 156 X509_SIG *p8 = NULL; 157 int klen; 158 EVP_PKEY *ret; 159 char psbuf[PEM_BUFSIZE]; 160 p8 = d2i_PKCS8_bio(bp, NULL); 161 if(!p8) return NULL; 162 if (cb) klen=cb(psbuf,PEM_BUFSIZE,0,u); 163 else klen=PEM_def_callback(psbuf,PEM_BUFSIZE,0,u); 164 if (klen <= 0) { 165 PEMerr(PEM_F_D2I_PKCS8PRIVATEKEY_BIO, PEM_R_BAD_PASSWORD_READ); 166 X509_SIG_free(p8); 167 return NULL; 168 } 169 p8inf = PKCS8_decrypt(p8, psbuf, klen); 170 X509_SIG_free(p8); 171 if(!p8inf) return NULL; 172 ret = EVP_PKCS82PKEY(p8inf); 173 PKCS8_PRIV_KEY_INFO_free(p8inf); 174 if(!ret) return NULL; 175 if(x) { 176 if(*x) EVP_PKEY_free(*x); 177 *x = ret; 178 } 179 return ret; 180} 181 182#ifndef OPENSSL_NO_FP_API 183 184int i2d_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc, 185 char *kstr, int klen, 186 pem_password_cb *cb, void *u) 187{ 188 return do_pk8pkey_fp(fp, x, 1, -1, enc, kstr, klen, cb, u); 189} 190 191int i2d_PKCS8PrivateKey_nid_fp(FILE *fp, EVP_PKEY *x, int nid, 192 char *kstr, int klen, 193 pem_password_cb *cb, void *u) 194{ 195 return do_pk8pkey_fp(fp, x, 1, nid, NULL, kstr, klen, cb, u); 196} 197 198int PEM_write_PKCS8PrivateKey_nid(FILE *fp, EVP_PKEY *x, int nid, 199 char *kstr, int klen, 200 pem_password_cb *cb, void *u) 201{ 202 return do_pk8pkey_fp(fp, x, 0, nid, NULL, kstr, klen, cb, u); 203} 204 205int PEM_write_PKCS8PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc, 206 char *kstr, int klen, pem_password_cb *cb, void *u) 207{ 208 return do_pk8pkey_fp(fp, x, 0, -1, enc, kstr, klen, cb, u); 209} 210 211static int do_pk8pkey_fp(FILE *fp, EVP_PKEY *x, int isder, int nid, const EVP_CIPHER *enc, 212 char *kstr, int klen, 213 pem_password_cb *cb, void *u) 214{ 215 BIO *bp; 216 int ret; 217 if(!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) { 218 PEMerr(PEM_F_PEM_F_DO_PK8KEY_FP,ERR_R_BUF_LIB); 219 return(0); 220 } 221 ret = do_pk8pkey(bp, x, isder, nid, enc, kstr, klen, cb, u); 222 BIO_free(bp); 223 return ret; 224} 225 226EVP_PKEY *d2i_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY **x, pem_password_cb *cb, void *u) 227{ 228 BIO *bp; 229 EVP_PKEY *ret; 230 if(!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) { 231 PEMerr(PEM_F_D2I_PKCS8PRIVATEKEY_FP,ERR_R_BUF_LIB); 232 return NULL; 233 } 234 ret = d2i_PKCS8PrivateKey_bio(bp, x, cb, u); 235 BIO_free(bp); 236 return ret; 237} 238 239#endif 240 241IMPLEMENT_PEM_rw(PKCS8, X509_SIG, PEM_STRING_PKCS8, X509_SIG) 242IMPLEMENT_PEM_rw(PKCS8_PRIV_KEY_INFO, PKCS8_PRIV_KEY_INFO, PEM_STRING_PKCS8INF, 243 PKCS8_PRIV_KEY_INFO) 244