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 

    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 EXPORT_C 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 EXPORT_C 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 EXPORT_C 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 EXPORT_C 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 		PEMerr(PEM_F_DO_PK8PKEY,

   122 					PEM_R_ERROR_CONVERTING_PRIVATE_KEY);

   123 		return 0;

   124 	}

   125 	if(enc || (nid != -1)) {

   126 		if(!kstr) {

   127 			if(!cb) klen = PEM_def_callback(buf, PEM_BUFSIZE, 1, u);

   128 			else 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) 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 EXPORT_C 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 

   161 /* NOTE!!!!! - 12/2/09

   162  *

   163  * Not sure this is bug or intentional in the code to enforce the key storage in file should be password protected.

   164  * Be carefull while merging this code with any latest OpenSSL streams in the future. 

   165  * -Madhu

   166 */

   167 #if 0 //bug fix, unencryted private key read - START - 12/2/09

   168 	if(!p8) return NULL;

   169 	if (cb) klen=cb(psbuf,PEM_BUFSIZE,0,u);

   170 	else klen=PEM_def_callback(psbuf,PEM_BUFSIZE,0,u);

   171 	if (klen <= 0) {

   172 		PEMerr(PEM_F_D2I_PKCS8PRIVATEKEY_BIO, PEM_R_BAD_PASSWORD_READ);

   173 #endif //bug fix, unencryted private key read - END - 12/2/09		

   174 

   175 		if (!p8) {

   176        /* try unencrypted */

   177        BIO_reset(bp);

   178        p8inf = d2i_PKCS8_PRIV_KEY_INFO_bio(bp, NULL);

   179 		} else {

   180        if (cb) klen=cb(psbuf,PEM_BUFSIZE,0,u);

   181        else klen=PEM_def_callback(psbuf,PEM_BUFSIZE,0,u);

   182        if (klen <= 0) {

   183                PEMerr(PEM_F_D2I_PKCS8PRIVATEKEY_BIO, PEM_R_BAD_PASSWORD_READ);

   184                X509_SIG_free(p8);

   185                return NULL;

   186        }

   187       p8inf = PKCS8_decrypt(p8, psbuf, klen);

   188     }

   189 			X509_SIG_free(p8);

   190 //			return NULL;	//bug fix, unencryted private key read - 12/2/09               

   191 #if 0 //bug fix, unencryted private key read - START - 12/2/09               

   192 		p8inf = PKCS8_decrypt(p8, psbuf, klen);

   193 	  X509_SIG_free(p8); 

   194 #endif 	//bug fix, unencryted private key read - END - 12/2/09               

   195 	if(!p8inf) return NULL;

   196 	ret = EVP_PKCS82PKEY(p8inf);

   197 	PKCS8_PRIV_KEY_INFO_free(p8inf);

   198 	if(!ret) return NULL;

   199 	if(x) {

   200 		if(*x) EVP_PKEY_free(*x);

   201 		*x = ret;

   202 	}

   203 	return ret;

   204 }

   205 

   206 #ifndef OPENSSL_NO_FP_API

   207 

   208 EXPORT_C int i2d_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,

   209 				  char *kstr, int klen,

   210 				  pem_password_cb *cb, void *u)

   211 {

   212 	return do_pk8pkey_fp(fp, x, 1, -1, enc, kstr, klen, cb, u);

   213 }

   214 

   215 EXPORT_C int i2d_PKCS8PrivateKey_nid_fp(FILE *fp, EVP_PKEY *x, int nid,

   216 				  char *kstr, int klen,

   217 				  pem_password_cb *cb, void *u)

   218 {

   219 	return do_pk8pkey_fp(fp, x, 1, nid, NULL, kstr, klen, cb, u);

   220 }

   221 

   222 EXPORT_C int PEM_write_PKCS8PrivateKey_nid(FILE *fp, EVP_PKEY *x, int nid,

   223 				  char *kstr, int klen,

   224 				  pem_password_cb *cb, void *u)

   225 {

   226 	return do_pk8pkey_fp(fp, x, 0, nid, NULL, kstr, klen, cb, u);

   227 }

   228 

   229 EXPORT_C int PEM_write_PKCS8PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,

   230 			      char *kstr, int klen, pem_password_cb *cb, void *u)

   231 {

   232 	return do_pk8pkey_fp(fp, x, 0, -1, enc, kstr, klen, cb, u);

   233 }

   234 

   235 static int do_pk8pkey_fp(FILE *fp, EVP_PKEY *x, int isder, int nid, const EVP_CIPHER *enc,

   236 				  char *kstr, int klen,

   237 				  pem_password_cb *cb, void *u)

   238 {

   239 	BIO *bp;

   240 	int ret;

   241 	if(!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) {

   242 		PEMerr(PEM_F_DO_PK8PKEY_FP,ERR_R_BUF_LIB);

   243                 return(0);

   244 	}

   245 	ret = do_pk8pkey(bp, x, isder, nid, enc, kstr, klen, cb, u);

   246 	BIO_free(bp);

   247 	return ret;

   248 }

   249 

   250 EXPORT_C EVP_PKEY *d2i_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY **x, pem_password_cb *cb, void *u)

   251 {

   252 	BIO *bp;

   253 	EVP_PKEY *ret;

   254 	if(!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) {

   255 		PEMerr(PEM_F_D2I_PKCS8PRIVATEKEY_FP,ERR_R_BUF_LIB);

   256                 return NULL;

   257 	}

   258 	ret = d2i_PKCS8PrivateKey_bio(bp, x, cb, u);

   259 	BIO_free(bp);

   260 	return ret;

   261 }

   262 

   263 #endif

   264 

   265 IMPLEMENT_PEM_rw(PKCS8, X509_SIG, PEM_STRING_PKCS8, X509_SIG)

   266 IMPLEMENT_PEM_rw(PKCS8_PRIV_KEY_INFO, PKCS8_PRIV_KEY_INFO, PEM_STRING_PKCS8INF,

   267 							 PKCS8_PRIV_KEY_INFO)