sl@0: /* crypto/pem/pem_pkey.c */
sl@0: /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
sl@0:  * All rights reserved.
sl@0:  *
sl@0:  * This package is an SSL implementation written
sl@0:  * by Eric Young (eay@cryptsoft.com).
sl@0:  * The implementation was written so as to conform with Netscapes SSL.
sl@0:  * 
sl@0:  * This library is free for commercial and non-commercial use as long as
sl@0:  * the following conditions are aheared to.  The following conditions
sl@0:  * apply to all code found in this distribution, be it the RC4, RSA,
sl@0:  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
sl@0:  * included with this distribution is covered by the same copyright terms
sl@0:  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
sl@0:  * 
sl@0:  * Copyright remains Eric Young's, and as such any Copyright notices in
sl@0:  * the code are not to be removed.
sl@0:  * If this package is used in a product, Eric Young should be given attribution
sl@0:  * as the author of the parts of the library used.
sl@0:  * This can be in the form of a textual message at program startup or
sl@0:  * in documentation (online or textual) provided with the package.
sl@0:  * 
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  * 1. Redistributions of source code must retain the copyright
sl@0:  *    notice, this list of conditions and the following disclaimer.
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in the
sl@0:  *    documentation and/or other materials provided with the distribution.
sl@0:  * 3. All advertising materials mentioning features or use of this software
sl@0:  *    must display the following acknowledgement:
sl@0:  *    "This product includes cryptographic software written by
sl@0:  *     Eric Young (eay@cryptsoft.com)"
sl@0:  *    The word 'cryptographic' can be left out if the rouines from the library
sl@0:  *    being used are not cryptographic related :-).
sl@0:  * 4. If you include any Windows specific code (or a derivative thereof) from 
sl@0:  *    the apps directory (application code) you must include an acknowledgement:
sl@0:  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
sl@0:  * 
sl@0:  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
sl@0:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sl@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
sl@0:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
sl@0:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
sl@0:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
sl@0:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
sl@0:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
sl@0:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
sl@0:  * SUCH DAMAGE.
sl@0:  * 
sl@0:  * The licence and distribution terms for any publically available version or
sl@0:  * derivative of this code cannot be changed.  i.e. this code cannot simply be
sl@0:  * copied and put under another distribution licence
sl@0:  * [including the GNU Public Licence.]
sl@0:  */
sl@0: 
sl@0: #include <stdio.h>
sl@0: #include "cryptlib.h"
sl@0: #include <openssl/buffer.h>
sl@0: #include <openssl/objects.h>
sl@0: #include <openssl/evp.h>
sl@0: #include <openssl/rand.h>
sl@0: #include <openssl/x509.h>
sl@0: #include <openssl/pkcs12.h>
sl@0: #include <openssl/pem.h>
sl@0: 
sl@0: static int do_pk8pkey(BIO *bp, EVP_PKEY *x, int isder,
sl@0: 				int nid, const EVP_CIPHER *enc,
sl@0: 				char *kstr, int klen,
sl@0: 				pem_password_cb *cb, void *u);
sl@0: static int do_pk8pkey_fp(FILE *bp, EVP_PKEY *x, int isder,
sl@0: 				int nid, const EVP_CIPHER *enc,
sl@0: 				char *kstr, int klen,
sl@0: 				pem_password_cb *cb, void *u);
sl@0: 
sl@0: /* These functions write a private key in PKCS#8 format: it is a "drop in"
sl@0:  * replacement for PEM_write_bio_PrivateKey() and friends. As usual if 'enc'
sl@0:  * is NULL then it uses the unencrypted private key form. The 'nid' versions
sl@0:  * uses PKCS#5 v1.5 PBE algorithms whereas the others use PKCS#5 v2.0.
sl@0:  */
sl@0: 
sl@0: EXPORT_C int PEM_write_bio_PKCS8PrivateKey_nid(BIO *bp, EVP_PKEY *x, int nid,
sl@0: 				  char *kstr, int klen,
sl@0: 				  pem_password_cb *cb, void *u)
sl@0: {
sl@0: 	return do_pk8pkey(bp, x, 0, nid, NULL, kstr, klen, cb, u);
sl@0: }
sl@0: 
sl@0: EXPORT_C int PEM_write_bio_PKCS8PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
sl@0: 				  char *kstr, int klen,
sl@0: 				  pem_password_cb *cb, void *u)
sl@0: {
sl@0: 	return do_pk8pkey(bp, x, 0, -1, enc, kstr, klen, cb, u);
sl@0: }
sl@0: 
sl@0: EXPORT_C int i2d_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
sl@0: 				  char *kstr, int klen,
sl@0: 				  pem_password_cb *cb, void *u)
sl@0: {
sl@0: 	return do_pk8pkey(bp, x, 1, -1, enc, kstr, klen, cb, u);
sl@0: }
sl@0: 
sl@0: EXPORT_C int i2d_PKCS8PrivateKey_nid_bio(BIO *bp, EVP_PKEY *x, int nid,
sl@0: 				  char *kstr, int klen,
sl@0: 				  pem_password_cb *cb, void *u)
sl@0: {
sl@0: 	return do_pk8pkey(bp, x, 1, nid, NULL, kstr, klen, cb, u);
sl@0: }
sl@0: 
sl@0: static int do_pk8pkey(BIO *bp, EVP_PKEY *x, int isder, int nid, const EVP_CIPHER *enc,
sl@0: 				  char *kstr, int klen,
sl@0: 				  pem_password_cb *cb, void *u)
sl@0: {
sl@0: 	X509_SIG *p8;
sl@0: 	PKCS8_PRIV_KEY_INFO *p8inf;
sl@0: 	char buf[PEM_BUFSIZE];
sl@0: 	int ret;
sl@0: 	if(!(p8inf = EVP_PKEY2PKCS8(x))) {
sl@0: 		PEMerr(PEM_F_DO_PK8PKEY,
sl@0: 					PEM_R_ERROR_CONVERTING_PRIVATE_KEY);
sl@0: 		return 0;
sl@0: 	}
sl@0: 	if(enc || (nid != -1)) {
sl@0: 		if(!kstr) {
sl@0: 			if(!cb) klen = PEM_def_callback(buf, PEM_BUFSIZE, 1, u);
sl@0: 			else klen = cb(buf, PEM_BUFSIZE, 1, u);
sl@0: 			if(klen <= 0) {
sl@0: 				PEMerr(PEM_F_DO_PK8PKEY,PEM_R_READ_KEY);
sl@0: 				PKCS8_PRIV_KEY_INFO_free(p8inf);
sl@0: 				return 0;
sl@0: 			}
sl@0: 				
sl@0: 			kstr = buf;
sl@0: 		}
sl@0: 		p8 = PKCS8_encrypt(nid, enc, kstr, klen, NULL, 0, 0, p8inf);
sl@0: 		if(kstr == buf) OPENSSL_cleanse(buf, klen);
sl@0: 		PKCS8_PRIV_KEY_INFO_free(p8inf);
sl@0: 		if(isder) ret = i2d_PKCS8_bio(bp, p8);
sl@0: 		else ret = PEM_write_bio_PKCS8(bp, p8);
sl@0: 		X509_SIG_free(p8);
sl@0: 		return ret;
sl@0: 	} else {
sl@0: 		if(isder) ret = i2d_PKCS8_PRIV_KEY_INFO_bio(bp, p8inf);
sl@0: 		else ret = PEM_write_bio_PKCS8_PRIV_KEY_INFO(bp, p8inf);
sl@0: 		PKCS8_PRIV_KEY_INFO_free(p8inf);
sl@0: 		return ret;
sl@0: 	}
sl@0: }
sl@0: 
sl@0: EXPORT_C EVP_PKEY *d2i_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY **x, pem_password_cb *cb, void *u)
sl@0: {
sl@0: 	PKCS8_PRIV_KEY_INFO *p8inf = NULL;
sl@0: 	X509_SIG *p8 = NULL;
sl@0: 	int klen;
sl@0: 	EVP_PKEY *ret;
sl@0: 	char psbuf[PEM_BUFSIZE];
sl@0: 	p8 = d2i_PKCS8_bio(bp, NULL);
sl@0: 
sl@0: /* NOTE!!!!! - 12/2/09
sl@0:  *
sl@0:  * Not sure this is bug or intentional in the code to enforce the key storage in file should be password protected.
sl@0:  * Be carefull while merging this code with any latest OpenSSL streams in the future. 
sl@0:  * -Madhu
sl@0: */
sl@0: #if 0 //bug fix, unencryted private key read - START - 12/2/09
sl@0: 	if(!p8) return NULL;
sl@0: 	if (cb) klen=cb(psbuf,PEM_BUFSIZE,0,u);
sl@0: 	else klen=PEM_def_callback(psbuf,PEM_BUFSIZE,0,u);
sl@0: 	if (klen <= 0) {
sl@0: 		PEMerr(PEM_F_D2I_PKCS8PRIVATEKEY_BIO, PEM_R_BAD_PASSWORD_READ);
sl@0: #endif //bug fix, unencryted private key read - END - 12/2/09		
sl@0: 
sl@0: 		if (!p8) {
sl@0:        /* try unencrypted */
sl@0:        BIO_reset(bp);
sl@0:        p8inf = d2i_PKCS8_PRIV_KEY_INFO_bio(bp, NULL);
sl@0: 		} else {
sl@0:        if (cb) klen=cb(psbuf,PEM_BUFSIZE,0,u);
sl@0:        else klen=PEM_def_callback(psbuf,PEM_BUFSIZE,0,u);
sl@0:        if (klen <= 0) {
sl@0:                PEMerr(PEM_F_D2I_PKCS8PRIVATEKEY_BIO, PEM_R_BAD_PASSWORD_READ);
sl@0:                X509_SIG_free(p8);
sl@0:                return NULL;
sl@0:        }
sl@0:       p8inf = PKCS8_decrypt(p8, psbuf, klen);
sl@0:     }
sl@0: 			X509_SIG_free(p8);
sl@0: //			return NULL;	//bug fix, unencryted private key read - 12/2/09               
sl@0: #if 0 //bug fix, unencryted private key read - START - 12/2/09               
sl@0: 		p8inf = PKCS8_decrypt(p8, psbuf, klen);
sl@0: 	  X509_SIG_free(p8); 
sl@0: #endif 	//bug fix, unencryted private key read - END - 12/2/09               
sl@0: 	if(!p8inf) return NULL;
sl@0: 	ret = EVP_PKCS82PKEY(p8inf);
sl@0: 	PKCS8_PRIV_KEY_INFO_free(p8inf);
sl@0: 	if(!ret) return NULL;
sl@0: 	if(x) {
sl@0: 		if(*x) EVP_PKEY_free(*x);
sl@0: 		*x = ret;
sl@0: 	}
sl@0: 	return ret;
sl@0: }
sl@0: 
sl@0: #ifndef OPENSSL_NO_FP_API
sl@0: 
sl@0: EXPORT_C int i2d_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
sl@0: 				  char *kstr, int klen,
sl@0: 				  pem_password_cb *cb, void *u)
sl@0: {
sl@0: 	return do_pk8pkey_fp(fp, x, 1, -1, enc, kstr, klen, cb, u);
sl@0: }
sl@0: 
sl@0: EXPORT_C int i2d_PKCS8PrivateKey_nid_fp(FILE *fp, EVP_PKEY *x, int nid,
sl@0: 				  char *kstr, int klen,
sl@0: 				  pem_password_cb *cb, void *u)
sl@0: {
sl@0: 	return do_pk8pkey_fp(fp, x, 1, nid, NULL, kstr, klen, cb, u);
sl@0: }
sl@0: 
sl@0: EXPORT_C int PEM_write_PKCS8PrivateKey_nid(FILE *fp, EVP_PKEY *x, int nid,
sl@0: 				  char *kstr, int klen,
sl@0: 				  pem_password_cb *cb, void *u)
sl@0: {
sl@0: 	return do_pk8pkey_fp(fp, x, 0, nid, NULL, kstr, klen, cb, u);
sl@0: }
sl@0: 
sl@0: EXPORT_C int PEM_write_PKCS8PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
sl@0: 			      char *kstr, int klen, pem_password_cb *cb, void *u)
sl@0: {
sl@0: 	return do_pk8pkey_fp(fp, x, 0, -1, enc, kstr, klen, cb, u);
sl@0: }
sl@0: 
sl@0: static int do_pk8pkey_fp(FILE *fp, EVP_PKEY *x, int isder, int nid, const EVP_CIPHER *enc,
sl@0: 				  char *kstr, int klen,
sl@0: 				  pem_password_cb *cb, void *u)
sl@0: {
sl@0: 	BIO *bp;
sl@0: 	int ret;
sl@0: 	if(!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) {
sl@0: 		PEMerr(PEM_F_DO_PK8PKEY_FP,ERR_R_BUF_LIB);
sl@0:                 return(0);
sl@0: 	}
sl@0: 	ret = do_pk8pkey(bp, x, isder, nid, enc, kstr, klen, cb, u);
sl@0: 	BIO_free(bp);
sl@0: 	return ret;
sl@0: }
sl@0: 
sl@0: EXPORT_C EVP_PKEY *d2i_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY **x, pem_password_cb *cb, void *u)
sl@0: {
sl@0: 	BIO *bp;
sl@0: 	EVP_PKEY *ret;
sl@0: 	if(!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) {
sl@0: 		PEMerr(PEM_F_D2I_PKCS8PRIVATEKEY_FP,ERR_R_BUF_LIB);
sl@0:                 return NULL;
sl@0: 	}
sl@0: 	ret = d2i_PKCS8PrivateKey_bio(bp, x, cb, u);
sl@0: 	BIO_free(bp);
sl@0: 	return ret;
sl@0: }
sl@0: 
sl@0: #endif
sl@0: 
sl@0: IMPLEMENT_PEM_rw(PKCS8, X509_SIG, PEM_STRING_PKCS8, X509_SIG)
sl@0: IMPLEMENT_PEM_rw(PKCS8_PRIV_KEY_INFO, PKCS8_PRIV_KEY_INFO, PEM_STRING_PKCS8INF,
sl@0: 							 PKCS8_PRIV_KEY_INFO)