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 <openssl/buf.h> 60 #include <openssl/err.h> 61 #include <openssl/evp.h> 62 #include <openssl/mem.h> 63 #include <openssl/obj.h> 64 #include <openssl/pkcs8.h> 65 #include <openssl/rand.h> 66 #include <openssl/x509.h> 67 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 OPENSSL_PUT_ERROR(PEM, PEM_R_ERROR_CONVERTING_PRIVATE_KEY); 122 return 0; 123 } 124 if(enc || (nid != -1)) { 125 if(!kstr) { 126 klen = 0; 127 if (!cb) cb = PEM_def_callback; 128 klen = cb(buf, PEM_BUFSIZE, 1, u); 129 if(klen <= 0) { 130 OPENSSL_PUT_ERROR(PEM, 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; 161 162 klen = 0; 163 if (!cb) cb = PEM_def_callback; 164 klen=cb(psbuf,PEM_BUFSIZE,0,u); 165 if (klen <= 0) { 166 OPENSSL_PUT_ERROR(PEM, PEM_R_BAD_PASSWORD_READ); 167 X509_SIG_free(p8); 168 return NULL; 169 } 170 p8inf = PKCS8_decrypt(p8, psbuf, klen); 171 X509_SIG_free(p8); 172 if(!p8inf) return NULL; 173 ret = EVP_PKCS82PKEY(p8inf); 174 PKCS8_PRIV_KEY_INFO_free(p8inf); 175 if(!ret) return NULL; 176 if(x) { 177 if(*x) EVP_PKEY_free(*x); 178 *x = ret; 179 } 180 return ret; 181 } 182 183 #ifndef OPENSSL_NO_FP_API 184 185 int i2d_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc, 186 char *kstr, int klen, 187 pem_password_cb *cb, void *u) 188 { 189 return do_pk8pkey_fp(fp, x, 1, -1, enc, kstr, klen, cb, u); 190 } 191 192 int i2d_PKCS8PrivateKey_nid_fp(FILE *fp, EVP_PKEY *x, int nid, 193 char *kstr, int klen, 194 pem_password_cb *cb, void *u) 195 { 196 return do_pk8pkey_fp(fp, x, 1, nid, NULL, kstr, klen, cb, u); 197 } 198 199 int PEM_write_PKCS8PrivateKey_nid(FILE *fp, EVP_PKEY *x, int nid, 200 char *kstr, int klen, 201 pem_password_cb *cb, void *u) 202 { 203 return do_pk8pkey_fp(fp, x, 0, nid, NULL, kstr, klen, cb, u); 204 } 205 206 int PEM_write_PKCS8PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc, 207 char *kstr, int klen, pem_password_cb *cb, void *u) 208 { 209 return do_pk8pkey_fp(fp, x, 0, -1, enc, kstr, klen, cb, u); 210 } 211 212 static int do_pk8pkey_fp(FILE *fp, EVP_PKEY *x, int isder, int nid, const EVP_CIPHER *enc, 213 char *kstr, int klen, 214 pem_password_cb *cb, void *u) 215 { 216 BIO *bp; 217 int ret; 218 if(!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) { 219 OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB); 220 return(0); 221 } 222 ret = do_pk8pkey(bp, x, isder, nid, enc, kstr, klen, cb, u); 223 BIO_free(bp); 224 return ret; 225 } 226 227 EVP_PKEY *d2i_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY **x, pem_password_cb *cb, void *u) 228 { 229 BIO *bp; 230 EVP_PKEY *ret; 231 if(!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) { 232 OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB); 233 return NULL; 234 } 235 ret = d2i_PKCS8PrivateKey_bio(bp, x, cb, u); 236 BIO_free(bp); 237 return ret; 238 } 239 240 #endif 241 242 IMPLEMENT_PEM_rw(PKCS8, X509_SIG, PEM_STRING_PKCS8, X509_SIG) 243 IMPLEMENT_PEM_rw(PKCS8_PRIV_KEY_INFO, PKCS8_PRIV_KEY_INFO, PEM_STRING_PKCS8INF, 244 PKCS8_PRIV_KEY_INFO) 245
