1 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 2 * All rights reserved. 3 * 4 * This package is an SSL implementation written 5 * by Eric Young (eay (at) cryptsoft.com). 6 * The implementation was written so as to conform with Netscapes SSL. 7 * 8 * This library is free for commercial and non-commercial use as long as 9 * the following conditions are aheared to. The following conditions 10 * apply to all code found in this distribution, be it the RC4, RSA, 11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 12 * included with this distribution is covered by the same copyright terms 13 * except that the holder is Tim Hudson (tjh (at) cryptsoft.com). 14 * 15 * Copyright remains Eric Young's, and as such any Copyright notices in 16 * the code are not to be removed. 17 * If this package is used in a product, Eric Young should be given attribution 18 * as the author of the parts of the library used. 19 * This can be in the form of a textual message at program startup or 20 * in documentation (online or textual) provided with the package. 21 * 22 * Redistribution and use in source and binary forms, with or without 23 * modification, are permitted provided that the following conditions 24 * are met: 25 * 1. Redistributions of source code must retain the copyright 26 * notice, this list of conditions and the following disclaimer. 27 * 2. Redistributions in binary form must reproduce the above copyright 28 * notice, this list of conditions and the following disclaimer in the 29 * documentation and/or other materials provided with the distribution. 30 * 3. All advertising materials mentioning features or use of this software 31 * must display the following acknowledgement: 32 * "This product includes cryptographic software written by 33 * Eric Young (eay (at) cryptsoft.com)" 34 * The word 'cryptographic' can be left out if the rouines from the library 35 * being used are not cryptographic related :-). 36 * 4. If you include any Windows specific code (or a derivative thereof) from 37 * the apps directory (application code) you must include an acknowledgement: 38 * "This product includes software written by Tim Hudson (tjh (at) cryptsoft.com)" 39 * 40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 50 * SUCH DAMAGE. 51 * 52 * The licence and distribution terms for any publically available version or 53 * derivative of this code cannot be changed. i.e. this code cannot simply be 54 * copied and put under another distribution licence 55 * [including the GNU Public Licence.] */ 56 57 #include <openssl/pem.h> 58 59 #include <stdio.h> 60 61 #include <openssl/buf.h> 62 #include <openssl/dh.h> 63 #include <openssl/err.h> 64 #include <openssl/evp.h> 65 #include <openssl/mem.h> 66 #include <openssl/obj.h> 67 #include <openssl/pkcs8.h> 68 #include <openssl/rand.h> 69 #include <openssl/x509.h> 70 71 #include "../evp/internal.h" 72 73 74 int pem_check_suffix(const char *pem_str, const char *suffix); 75 76 EVP_PKEY *PEM_read_bio_PrivateKey(BIO *bp, EVP_PKEY **x, pem_password_cb *cb, void *u) 77 { 78 char *nm=NULL; 79 const unsigned char *p=NULL; 80 unsigned char *data=NULL; 81 long len; 82 int slen; 83 EVP_PKEY *ret=NULL; 84 85 if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_EVP_PKEY, bp, cb, u)) 86 return NULL; 87 p = data; 88 89 if (strcmp(nm,PEM_STRING_PKCS8INF) == 0) { 90 PKCS8_PRIV_KEY_INFO *p8inf; 91 p8inf=d2i_PKCS8_PRIV_KEY_INFO(NULL, &p, len); 92 if(!p8inf) goto p8err; 93 ret = EVP_PKCS82PKEY(p8inf); 94 if(x) { 95 if(*x) EVP_PKEY_free((EVP_PKEY *)*x); 96 *x = ret; 97 } 98 PKCS8_PRIV_KEY_INFO_free(p8inf); 99 } else if (strcmp(nm,PEM_STRING_PKCS8) == 0) { 100 PKCS8_PRIV_KEY_INFO *p8inf; 101 X509_SIG *p8; 102 int klen; 103 char psbuf[PEM_BUFSIZE]; 104 p8 = d2i_X509_SIG(NULL, &p, len); 105 if(!p8) goto p8err; 106 107 klen = 0; 108 if (cb) klen=cb(psbuf,PEM_BUFSIZE,0,u); 109 if (klen <= 0) { 110 OPENSSL_PUT_ERROR(PEM, PEM_read_bio_PrivateKey, PEM_R_BAD_PASSWORD_READ); 111 X509_SIG_free(p8); 112 goto err; 113 } 114 p8inf = PKCS8_decrypt(p8, psbuf, klen); 115 X509_SIG_free(p8); 116 if(!p8inf) goto p8err; 117 ret = EVP_PKCS82PKEY(p8inf); 118 if(x) { 119 if(*x) EVP_PKEY_free((EVP_PKEY *)*x); 120 *x = ret; 121 } 122 PKCS8_PRIV_KEY_INFO_free(p8inf); 123 } else if ((slen = pem_check_suffix(nm, "PRIVATE KEY")) > 0) 124 { 125 const EVP_PKEY_ASN1_METHOD *ameth; 126 ameth = EVP_PKEY_asn1_find_str(NULL, nm, slen); 127 if (!ameth || !ameth->old_priv_decode) 128 goto p8err; 129 ret=d2i_PrivateKey(ameth->pkey_id,x,&p,len); 130 } 131 p8err: 132 if (ret == NULL) 133 OPENSSL_PUT_ERROR(PEM, PEM_read_bio_PrivateKey, ERR_R_ASN1_LIB); 134 135 err: 136 OPENSSL_free(nm); 137 OPENSSL_cleanse(data, len); 138 OPENSSL_free(data); 139 return(ret); 140 } 141 142 int PEM_write_bio_PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc, 143 unsigned char *kstr, int klen, 144 pem_password_cb *cb, void *u) 145 { 146 char pem_str[80]; 147 if (!x->ameth || x->ameth->priv_encode) 148 return PEM_write_bio_PKCS8PrivateKey(bp, x, enc, 149 (char *)kstr, klen, 150 cb, u); 151 152 BIO_snprintf(pem_str, 80, "%s PRIVATE KEY", x->ameth->pem_str); 153 return PEM_ASN1_write_bio((i2d_of_void *)i2d_PrivateKey, 154 pem_str,bp,x,enc,kstr,klen,cb,u); 155 } 156 157 static int public_key_type_from_str(const char *name, size_t len) { 158 if (len == 3 && memcmp(name, "RSA", 3) == 0) { 159 return EVP_PKEY_RSA; 160 } else if (len == 2 && memcmp(name, "DH", 2) == 0) { 161 return EVP_PKEY_DH; 162 } else if (len == 2 && memcmp(name, "EC", 2) == 0) { 163 return EVP_PKEY_EC; 164 } 165 return NID_undef; 166 } 167 168 static int set_pkey_type_from_str(EVP_PKEY *pkey, const char *name, size_t len) { 169 int nid = public_key_type_from_str(name, len); 170 if (nid == NID_undef) { 171 return 0; 172 } 173 return EVP_PKEY_set_type(pkey, nid); 174 } 175 176 EVP_PKEY *PEM_read_bio_Parameters(BIO *bp, EVP_PKEY **x) 177 { 178 char *nm=NULL; 179 const unsigned char *p=NULL; 180 unsigned char *data=NULL; 181 long len; 182 int slen; 183 EVP_PKEY *ret=NULL; 184 185 if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_PARAMETERS, 186 bp, 0, NULL)) 187 return NULL; 188 p = data; 189 190 if ((slen = pem_check_suffix(nm, "PARAMETERS")) > 0) 191 { 192 ret = EVP_PKEY_new(); 193 if (!ret) 194 goto err; 195 if (!set_pkey_type_from_str(ret, nm, slen) 196 || !ret->ameth->param_decode 197 || !ret->ameth->param_decode(ret, &p, len)) 198 { 199 EVP_PKEY_free(ret); 200 ret = NULL; 201 goto err; 202 } 203 if(x) 204 { 205 if(*x) EVP_PKEY_free((EVP_PKEY *)*x); 206 *x = ret; 207 } 208 } 209 err: 210 if (ret == NULL) 211 OPENSSL_PUT_ERROR(PEM, PEM_read_bio_Parameters, ERR_R_ASN1_LIB); 212 OPENSSL_free(nm); 213 OPENSSL_free(data); 214 return(ret); 215 } 216 217 int PEM_write_bio_Parameters(BIO *bp, EVP_PKEY *x) 218 { 219 char pem_str[80]; 220 if (!x->ameth || !x->ameth->param_encode) 221 return 0; 222 223 BIO_snprintf(pem_str, 80, "%s PARAMETERS", x->ameth->pem_str); 224 return PEM_ASN1_write_bio( 225 (i2d_of_void *)x->ameth->param_encode, 226 pem_str,bp,x,NULL,NULL,0,0,NULL); 227 } 228 229 #ifndef OPENSSL_NO_FP_API 230 EVP_PKEY *PEM_read_PrivateKey(FILE *fp, EVP_PKEY **x, pem_password_cb *cb, void *u) 231 { 232 BIO *b; 233 EVP_PKEY *ret; 234 235 if ((b=BIO_new(BIO_s_file())) == NULL) 236 { 237 OPENSSL_PUT_ERROR(PEM, PEM_read_PrivateKey, ERR_R_BUF_LIB); 238 return(0); 239 } 240 BIO_set_fp(b,fp,BIO_NOCLOSE); 241 ret=PEM_read_bio_PrivateKey(b,x,cb,u); 242 BIO_free(b); 243 return(ret); 244 } 245 246 int PEM_write_PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc, 247 unsigned char *kstr, int klen, 248 pem_password_cb *cb, void *u) 249 { 250 BIO *b; 251 int ret; 252 253 if ((b=BIO_new_fp(fp, BIO_NOCLOSE)) == NULL) 254 { 255 OPENSSL_PUT_ERROR(PEM, PEM_write_PrivateKey, ERR_R_BUF_LIB); 256 return 0; 257 } 258 ret=PEM_write_bio_PrivateKey(b, x, enc, kstr, klen, cb, u); 259 BIO_free(b); 260 return ret; 261 } 262 263 #endif 264 265 266 /* Transparently read in PKCS#3 or X9.42 DH parameters */ 267 268 DH *PEM_read_bio_DHparams(BIO *bp, DH **x, pem_password_cb *cb, void *u) 269 { 270 char *nm=NULL; 271 const unsigned char *p=NULL; 272 unsigned char *data=NULL; 273 long len; 274 DH *ret=NULL; 275 276 if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_DHPARAMS, 277 bp, cb, u)) 278 return NULL; 279 p = data; 280 281 /* TODO(fork): remove? */ 282 /*if (!strcmp(nm, PEM_STRING_DHXPARAMS)) 283 ret = d2i_DHxparams(x, &p, len); 284 else */ 285 ret = d2i_DHparams(x, &p, len); 286 287 if (ret == NULL) 288 OPENSSL_PUT_ERROR(PEM, PEM_read_bio_DHparams, ERR_R_ASN1_LIB); 289 OPENSSL_free(nm); 290 OPENSSL_free(data); 291 return ret; 292 } 293 294 #ifndef OPENSSL_NO_FP_API 295 DH *PEM_read_DHparams(FILE *fp, DH **x, pem_password_cb *cb, void *u) 296 { 297 BIO *b; 298 DH *ret; 299 300 if ((b=BIO_new(BIO_s_file())) == NULL) 301 { 302 OPENSSL_PUT_ERROR(PEM, PEM_read_DHparams, ERR_R_BUF_LIB); 303 return(0); 304 } 305 BIO_set_fp(b,fp,BIO_NOCLOSE); 306 ret=PEM_read_bio_DHparams(b,x,cb,u); 307 BIO_free(b); 308 return(ret); 309 } 310 #endif 311 312
