1 /* $OpenBSD: pem_pk8.c,v 1.9 2014/10/18 17:20:40 jsing Exp $ */ 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 <string.h> 61 62 #include <openssl/buffer.h> 63 #include <openssl/err.h> 64 #include <openssl/evp.h> 65 #include <openssl/objects.h> 66 #include <openssl/pem.h> 67 #include <openssl/pkcs12.h> 68 #include <openssl/x509.h> 69 70 static int do_pk8pkey(BIO *bp, EVP_PKEY *x, int isder, int nid, 71 const EVP_CIPHER *enc, char *kstr, int klen, pem_password_cb *cb, void *u); 72 static int do_pk8pkey_fp(FILE *bp, EVP_PKEY *x, int isder, int nid, 73 const EVP_CIPHER *enc, char *kstr, int klen, pem_password_cb *cb, void *u); 74 75 /* These functions write a private key in PKCS#8 format: it is a "drop in" 76 * replacement for PEM_write_bio_PrivateKey() and friends. As usual if 'enc' 77 * is NULL then it uses the unencrypted private key form. The 'nid' versions 78 * uses PKCS#5 v1.5 PBE algorithms whereas the others use PKCS#5 v2.0. 79 */ 80 81 int 82 PEM_write_bio_PKCS8PrivateKey_nid(BIO *bp, EVP_PKEY *x, int nid, char *kstr, 83 int klen, pem_password_cb *cb, void *u) 84 { 85 return do_pk8pkey(bp, x, 0, nid, NULL, kstr, klen, cb, u); 86 } 87 88 int 89 PEM_write_bio_PKCS8PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc, 90 char *kstr, int klen, pem_password_cb *cb, void *u) 91 { 92 return do_pk8pkey(bp, x, 0, -1, enc, kstr, klen, cb, u); 93 } 94 95 int 96 i2d_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc, 97 char *kstr, int klen, pem_password_cb *cb, void *u) 98 { 99 return do_pk8pkey(bp, x, 1, -1, enc, kstr, klen, cb, u); 100 } 101 102 int 103 i2d_PKCS8PrivateKey_nid_bio(BIO *bp, EVP_PKEY *x, int nid, 104 char *kstr, int klen, pem_password_cb *cb, void *u) 105 { 106 return do_pk8pkey(bp, x, 1, nid, NULL, kstr, klen, cb, u); 107 } 108 109 static int 110 do_pk8pkey(BIO *bp, EVP_PKEY *x, int isder, int nid, const EVP_CIPHER *enc, 111 char *kstr, int klen, pem_password_cb *cb, void *u) 112 { 113 X509_SIG *p8; 114 PKCS8_PRIV_KEY_INFO *p8inf; 115 char buf[PEM_BUFSIZE]; 116 int ret; 117 118 if (!(p8inf = EVP_PKEY2PKCS8(x))) { 119 PEMerr(PEM_F_DO_PK8PKEY, 120 PEM_R_ERROR_CONVERTING_PRIVATE_KEY); 121 return 0; 122 } 123 if (enc || (nid != -1)) { 124 if (!kstr) { 125 if (!cb) 126 klen = PEM_def_callback(buf, PEM_BUFSIZE, 1, u); 127 else 128 klen = cb(buf, PEM_BUFSIZE, 1, u); 129 if (klen <= 0) { 130 PEMerr(PEM_F_DO_PK8PKEY, 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) 139 explicit_bzero(buf, klen); 140 PKCS8_PRIV_KEY_INFO_free(p8inf); 141 if (isder) 142 ret = i2d_PKCS8_bio(bp, p8); 143 else 144 ret = PEM_write_bio_PKCS8(bp, p8); 145 X509_SIG_free(p8); 146 return ret; 147 } else { 148 if (isder) 149 ret = i2d_PKCS8_PRIV_KEY_INFO_bio(bp, p8inf); 150 else 151 ret = PEM_write_bio_PKCS8_PRIV_KEY_INFO(bp, p8inf); 152 PKCS8_PRIV_KEY_INFO_free(p8inf); 153 return ret; 154 } 155 } 156 157 EVP_PKEY * 158 d2i_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY **x, pem_password_cb *cb, void *u) 159 { 160 PKCS8_PRIV_KEY_INFO *p8inf = NULL; 161 X509_SIG *p8 = NULL; 162 int klen; 163 EVP_PKEY *ret; 164 char psbuf[PEM_BUFSIZE]; 165 166 p8 = d2i_PKCS8_bio(bp, NULL); 167 if (!p8) 168 return NULL; 169 if (cb) 170 klen = cb(psbuf, PEM_BUFSIZE, 0, u); 171 else 172 klen = PEM_def_callback(psbuf, PEM_BUFSIZE, 0, u); 173 if (klen <= 0) { 174 PEMerr(PEM_F_D2I_PKCS8PRIVATEKEY_BIO, PEM_R_BAD_PASSWORD_READ); 175 X509_SIG_free(p8); 176 return NULL; 177 } 178 p8inf = PKCS8_decrypt(p8, psbuf, klen); 179 X509_SIG_free(p8); 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 EVP_PKEY_free(*x); 188 *x = ret; 189 } 190 return ret; 191 } 192 193 194 int 195 i2d_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc, 196 char *kstr, int klen, pem_password_cb *cb, void *u) 197 { 198 return do_pk8pkey_fp(fp, x, 1, -1, enc, kstr, klen, cb, u); 199 } 200 201 int 202 i2d_PKCS8PrivateKey_nid_fp(FILE *fp, EVP_PKEY *x, int nid, char *kstr, 203 int klen, pem_password_cb *cb, void *u) 204 { 205 return do_pk8pkey_fp(fp, x, 1, nid, NULL, kstr, klen, cb, u); 206 } 207 208 int 209 PEM_write_PKCS8PrivateKey_nid(FILE *fp, EVP_PKEY *x, int nid, char *kstr, 210 int klen, pem_password_cb *cb, void *u) 211 { 212 return do_pk8pkey_fp(fp, x, 0, nid, NULL, kstr, klen, cb, u); 213 } 214 215 int 216 PEM_write_PKCS8PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc, 217 char *kstr, int klen, pem_password_cb *cb, void *u) 218 { 219 return do_pk8pkey_fp(fp, x, 0, -1, enc, kstr, klen, cb, u); 220 } 221 222 static int 223 do_pk8pkey_fp(FILE *fp, EVP_PKEY *x, int isder, int nid, const EVP_CIPHER *enc, 224 char *kstr, int klen, pem_password_cb *cb, void *u) 225 { 226 BIO *bp; 227 int ret; 228 229 if (!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) { 230 PEMerr(PEM_F_DO_PK8PKEY_FP, 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 * 239 d2i_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY **x, pem_password_cb *cb, void *u) 240 { 241 BIO *bp; 242 EVP_PKEY *ret; 243 244 if (!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) { 245 PEMerr(PEM_F_D2I_PKCS8PRIVATEKEY_FP, ERR_R_BUF_LIB); 246 return NULL; 247 } 248 ret = d2i_PKCS8PrivateKey_bio(bp, x, cb, u); 249 BIO_free(bp); 250 return ret; 251 } 252 253 254 IMPLEMENT_PEM_rw(PKCS8, X509_SIG, PEM_STRING_PKCS8, X509_SIG) 255 IMPLEMENT_PEM_rw(PKCS8_PRIV_KEY_INFO, PKCS8_PRIV_KEY_INFO, PEM_STRING_PKCS8INF, 256 PKCS8_PRIV_KEY_INFO) 257