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 static int do_pk8pkey(BIO *bp, EVP_PKEY *x, int isder, 69 int nid, const EVP_CIPHER *enc, 70 char *kstr, int klen, pem_password_cb *cb, void *u); 71 static int do_pk8pkey_fp(FILE *bp, EVP_PKEY *x, int isder, 72 int nid, const EVP_CIPHER *enc, 73 char *kstr, int klen, pem_password_cb *cb, void *u); 74 75 /* 76 * These functions write a private key in PKCS#8 format: it is a "drop in" 77 * replacement for PEM_write_bio_PrivateKey() and friends. As usual if 'enc' 78 * is NULL then it uses the unencrypted private key form. The 'nid' versions 79 * uses PKCS#5 v1.5 PBE algorithms whereas the others use PKCS#5 v2.0. 80 */ 81 82 int PEM_write_bio_PKCS8PrivateKey_nid(BIO *bp, EVP_PKEY *x, int nid, 83 char *kstr, int klen, 84 pem_password_cb *cb, void *u) 85 { 86 return do_pk8pkey(bp, x, 0, nid, NULL, kstr, klen, cb, u); 87 } 88 89 int PEM_write_bio_PKCS8PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc, 90 char *kstr, int klen, 91 pem_password_cb *cb, void *u) 92 { 93 return do_pk8pkey(bp, x, 0, -1, enc, kstr, klen, cb, u); 94 } 95 96 int i2d_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc, 97 char *kstr, int klen, 98 pem_password_cb *cb, void *u) 99 { 100 return do_pk8pkey(bp, x, 1, -1, enc, kstr, klen, cb, u); 101 } 102 103 int i2d_PKCS8PrivateKey_nid_bio(BIO *bp, EVP_PKEY *x, int nid, 104 char *kstr, int klen, 105 pem_password_cb *cb, void *u) 106 { 107 return do_pk8pkey(bp, x, 1, nid, NULL, kstr, klen, cb, u); 108 } 109 110 static int do_pk8pkey(BIO *bp, EVP_PKEY *x, int isder, int nid, 111 const EVP_CIPHER *enc, char *kstr, int klen, 112 pem_password_cb *cb, void *u) 113 { 114 X509_SIG *p8; 115 PKCS8_PRIV_KEY_INFO *p8inf; 116 char buf[PEM_BUFSIZE]; 117 int ret; 118 if (!(p8inf = EVP_PKEY2PKCS8(x))) { 119 OPENSSL_PUT_ERROR(PEM, PEM_R_ERROR_CONVERTING_PRIVATE_KEY); 120 return 0; 121 } 122 if (enc || (nid != -1)) { 123 if (!kstr) { 124 klen = 0; 125 if (!cb) 126 cb = PEM_def_callback; 127 klen = cb(buf, PEM_BUFSIZE, 1, u); 128 if (klen <= 0) { 129 OPENSSL_PUT_ERROR(PEM, PEM_R_READ_KEY); 130 PKCS8_PRIV_KEY_INFO_free(p8inf); 131 return 0; 132 } 133 134 kstr = buf; 135 } 136 p8 = PKCS8_encrypt(nid, enc, kstr, klen, NULL, 0, 0, p8inf); 137 if (kstr == buf) 138 OPENSSL_cleanse(buf, klen); 139 PKCS8_PRIV_KEY_INFO_free(p8inf); 140 if (isder) 141 ret = i2d_PKCS8_bio(bp, p8); 142 else 143 ret = PEM_write_bio_PKCS8(bp, p8); 144 X509_SIG_free(p8); 145 return ret; 146 } else { 147 if (isder) 148 ret = i2d_PKCS8_PRIV_KEY_INFO_bio(bp, p8inf); 149 else 150 ret = PEM_write_bio_PKCS8_PRIV_KEY_INFO(bp, p8inf); 151 PKCS8_PRIV_KEY_INFO_free(p8inf); 152 return ret; 153 } 154 } 155 156 EVP_PKEY *d2i_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY **x, pem_password_cb *cb, 157 void *u) 158 { 159 PKCS8_PRIV_KEY_INFO *p8inf = NULL; 160 X509_SIG *p8 = NULL; 161 int klen; 162 EVP_PKEY *ret; 163 char psbuf[PEM_BUFSIZE]; 164 p8 = d2i_PKCS8_bio(bp, NULL); 165 if (!p8) 166 return NULL; 167 168 klen = 0; 169 if (!cb) 170 cb = PEM_def_callback; 171 klen = cb(psbuf, PEM_BUFSIZE, 0, u); 172 if (klen <= 0) { 173 OPENSSL_PUT_ERROR(PEM, PEM_R_BAD_PASSWORD_READ); 174 X509_SIG_free(p8); 175 return NULL; 176 } 177 p8inf = PKCS8_decrypt(p8, psbuf, klen); 178 X509_SIG_free(p8); 179 OPENSSL_cleanse(psbuf, klen); 180 if (!p8inf) 181 return NULL; 182 ret = EVP_PKCS82PKEY(p8inf); 183 PKCS8_PRIV_KEY_INFO_free(p8inf); 184 if (!ret) 185 return NULL; 186 if (x) { 187 if (*x) 188 EVP_PKEY_free(*x); 189 *x = ret; 190 } 191 return ret; 192 } 193 194 #ifndef OPENSSL_NO_FP_API 195 196 int i2d_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc, 197 char *kstr, int klen, pem_password_cb *cb, void *u) 198 { 199 return do_pk8pkey_fp(fp, x, 1, -1, enc, kstr, klen, cb, u); 200 } 201 202 int i2d_PKCS8PrivateKey_nid_fp(FILE *fp, EVP_PKEY *x, int nid, 203 char *kstr, int klen, 204 pem_password_cb *cb, void *u) 205 { 206 return do_pk8pkey_fp(fp, x, 1, nid, NULL, kstr, klen, cb, u); 207 } 208 209 int PEM_write_PKCS8PrivateKey_nid(FILE *fp, EVP_PKEY *x, int nid, 210 char *kstr, int klen, 211 pem_password_cb *cb, void *u) 212 { 213 return do_pk8pkey_fp(fp, x, 0, nid, NULL, kstr, klen, cb, u); 214 } 215 216 int PEM_write_PKCS8PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc, 217 char *kstr, int klen, pem_password_cb *cb, 218 void *u) 219 { 220 return do_pk8pkey_fp(fp, x, 0, -1, enc, kstr, klen, cb, u); 221 } 222 223 static int do_pk8pkey_fp(FILE *fp, EVP_PKEY *x, int isder, int nid, 224 const EVP_CIPHER *enc, char *kstr, int klen, 225 pem_password_cb *cb, void *u) 226 { 227 BIO *bp; 228 int ret; 229 if (!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) { 230 OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB); 231 return (0); 232 } 233 ret = do_pk8pkey(bp, x, isder, nid, enc, kstr, klen, cb, u); 234 BIO_free(bp); 235 return ret; 236 } 237 238 EVP_PKEY *d2i_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY **x, pem_password_cb *cb, 239 void *u) 240 { 241 BIO *bp; 242 EVP_PKEY *ret; 243 if (!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) { 244 OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB); 245 return NULL; 246 } 247 ret = d2i_PKCS8PrivateKey_bio(bp, x, cb, u); 248 BIO_free(bp); 249 return ret; 250 } 251 252 #endif 253 254 IMPLEMENT_PEM_rw(PKCS8, X509_SIG, PEM_STRING_PKCS8, X509_SIG) 255 256 257 IMPLEMENT_PEM_rw(PKCS8_PRIV_KEY_INFO, PKCS8_PRIV_KEY_INFO, PEM_STRING_PKCS8INF, 258 PKCS8_PRIV_KEY_INFO) 259
