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 73int pem_check_suffix(const char *pem_str, const char *suffix); 74 75EVP_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 } 130p8err: 131 if (ret == NULL) 132 PEMerr(PEM_F_PEM_READ_BIO_PRIVATEKEY,ERR_R_ASN1_LIB); 133err: 134 OPENSSL_free(nm); 135 OPENSSL_cleanse(data, len); 136 OPENSSL_free(data); 137 return(ret); 138 } 139 140int 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 155EVP_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 } 188err: 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 196int 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 209EVP_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 225int 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 243