sl@0: /* crypto/asn1/n_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:  © Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.
sl@0:  */
sl@0: 
sl@0: #include <stdio.h>
sl@0: #include "cryptlib.h"
sl@0: #ifndef OPENSSL_NO_RSA
sl@0: #include <openssl/rsa.h>
sl@0: #include <openssl/objects.h>
sl@0: #include <openssl/asn1t.h>
sl@0: #include <openssl/asn1_mac.h>
sl@0: #include <openssl/evp.h>
sl@0: #include <openssl/x509.h>
sl@0: 
sl@0: 
sl@0: #ifndef OPENSSL_NO_RC4
sl@0: 
sl@0: typedef struct netscape_pkey_st
sl@0: 	{
sl@0: 	long version;
sl@0: 	X509_ALGOR *algor;
sl@0: 	ASN1_OCTET_STRING *private_key;
sl@0: 	} NETSCAPE_PKEY;
sl@0: 
sl@0: typedef struct netscape_encrypted_pkey_st
sl@0: 	{
sl@0: 	ASN1_OCTET_STRING *os;
sl@0: 	/* This is the same structure as DigestInfo so use it:
sl@0: 	 * although this isn't really anything to do with
sl@0: 	 * digests.
sl@0: 	 */
sl@0: 	X509_SIG *enckey;
sl@0: 	} NETSCAPE_ENCRYPTED_PKEY;
sl@0: 
sl@0: 
sl@0: ASN1_BROKEN_SEQUENCE(NETSCAPE_ENCRYPTED_PKEY) = {
sl@0: 	ASN1_SIMPLE(NETSCAPE_ENCRYPTED_PKEY, os, ASN1_OCTET_STRING),
sl@0: 	ASN1_SIMPLE(NETSCAPE_ENCRYPTED_PKEY, enckey, X509_SIG)
sl@0: } ASN1_BROKEN_SEQUENCE_END(NETSCAPE_ENCRYPTED_PKEY)
sl@0: 
sl@0: DECLARE_ASN1_FUNCTIONS_const(NETSCAPE_ENCRYPTED_PKEY)
sl@0: DECLARE_ASN1_ENCODE_FUNCTIONS_const(NETSCAPE_ENCRYPTED_PKEY,NETSCAPE_ENCRYPTED_PKEY)
sl@0: IMPLEMENT_ASN1_FUNCTIONS_const(NETSCAPE_ENCRYPTED_PKEY)
sl@0: 
sl@0: ASN1_SEQUENCE(NETSCAPE_PKEY) = {
sl@0: 	ASN1_SIMPLE(NETSCAPE_PKEY, version, LONG),
sl@0: 	ASN1_SIMPLE(NETSCAPE_PKEY, algor, X509_ALGOR),
sl@0: 	ASN1_SIMPLE(NETSCAPE_PKEY, private_key, ASN1_OCTET_STRING)
sl@0: } ASN1_SEQUENCE_END(NETSCAPE_PKEY)
sl@0: 
sl@0: DECLARE_ASN1_FUNCTIONS_const(NETSCAPE_PKEY)
sl@0: DECLARE_ASN1_ENCODE_FUNCTIONS_const(NETSCAPE_PKEY,NETSCAPE_PKEY)
sl@0: IMPLEMENT_ASN1_FUNCTIONS_const(NETSCAPE_PKEY)
sl@0: 
sl@0: static RSA *d2i_RSA_NET_2(RSA **a, ASN1_OCTET_STRING *os,
sl@0: 			  int (*cb)(char *buf, int len, const char *prompt,
sl@0: 				    int verify),
sl@0: 			  int sgckey);
sl@0: 
sl@0: EXPORT_C int i2d_Netscape_RSA(const RSA *a, unsigned char **pp,
sl@0: 		     int (*cb)(char *buf, int len, const char *prompt,
sl@0: 			       int verify))
sl@0: {
sl@0: 	return i2d_RSA_NET(a, pp, cb, 0);
sl@0: }
sl@0: 
sl@0: EXPORT_C int i2d_RSA_NET(const RSA *a, unsigned char **pp,
sl@0: 		int (*cb)(char *buf, int len, const char *prompt, int verify),
sl@0: 		int sgckey)
sl@0: 	{
sl@0: 	int i, j, ret = 0;
sl@0: 	int rsalen, pkeylen, olen;
sl@0: 	NETSCAPE_PKEY *pkey = NULL;
sl@0: 	NETSCAPE_ENCRYPTED_PKEY *enckey = NULL;
sl@0: 	unsigned char buf[256],*zz;
sl@0: 	unsigned char key[EVP_MAX_KEY_LENGTH];
sl@0: 	EVP_CIPHER_CTX ctx;
sl@0: 
sl@0: 	if (a == NULL) return(0);
sl@0: 
sl@0: 	if ((pkey=NETSCAPE_PKEY_new()) == NULL) goto err;
sl@0: 	if ((enckey=NETSCAPE_ENCRYPTED_PKEY_new()) == NULL) goto err;
sl@0: 	pkey->version = 0;
sl@0: 
sl@0: 	pkey->algor->algorithm=OBJ_nid2obj(NID_rsaEncryption);
sl@0: 	if ((pkey->algor->parameter=ASN1_TYPE_new()) == NULL) goto err;
sl@0: 	pkey->algor->parameter->type=V_ASN1_NULL;
sl@0: 
sl@0: 	rsalen = i2d_RSAPrivateKey(a, NULL);
sl@0: 
sl@0: 	/* Fake some octet strings just for the initial length
sl@0: 	 * calculation.
sl@0:  	 */
sl@0: 
sl@0: 	pkey->private_key->length=rsalen;
sl@0: 
sl@0: 	pkeylen=i2d_NETSCAPE_PKEY(pkey,NULL);
sl@0: 
sl@0: 	enckey->enckey->digest->length = pkeylen;
sl@0: 
sl@0: 	enckey->os->length = 11;	/* "private-key" */
sl@0: 
sl@0: 	enckey->enckey->algor->algorithm=OBJ_nid2obj(NID_rc4);
sl@0: 	if ((enckey->enckey->algor->parameter=ASN1_TYPE_new()) == NULL) goto err;
sl@0: 	enckey->enckey->algor->parameter->type=V_ASN1_NULL;
sl@0: 
sl@0: 	if (pp == NULL)
sl@0: 		{
sl@0: 		olen = i2d_NETSCAPE_ENCRYPTED_PKEY(enckey, NULL);
sl@0: 		NETSCAPE_PKEY_free(pkey);
sl@0: 		NETSCAPE_ENCRYPTED_PKEY_free(enckey);
sl@0: 		return olen;
sl@0: 		}
sl@0: 
sl@0: 
sl@0: 	/* Since its RC4 encrypted length is actual length */
sl@0: 	if ((zz=(unsigned char *)OPENSSL_malloc(rsalen)) == NULL)
sl@0: 		{
sl@0: 		ASN1err(ASN1_F_I2D_RSA_NET,ERR_R_MALLOC_FAILURE);
sl@0: 		goto err;
sl@0: 		}
sl@0: 
sl@0: 	pkey->private_key->data = zz;
sl@0: 	/* Write out private key encoding */
sl@0: 	i2d_RSAPrivateKey(a,&zz);
sl@0: 
sl@0: 	if ((zz=OPENSSL_malloc(pkeylen)) == NULL)
sl@0: 		{
sl@0: 		ASN1err(ASN1_F_I2D_RSA_NET,ERR_R_MALLOC_FAILURE);
sl@0: 		goto err;
sl@0: 		}
sl@0: 
sl@0: 	if (!ASN1_STRING_set(enckey->os, "private-key", -1)) 
sl@0: 		{
sl@0: 		ASN1err(ASN1_F_I2D_RSA_NET,ERR_R_MALLOC_FAILURE);
sl@0: 		goto err;
sl@0: 		}
sl@0: 	enckey->enckey->digest->data = zz;
sl@0: 	i2d_NETSCAPE_PKEY(pkey,&zz);
sl@0: 
sl@0: 	/* Wipe the private key encoding */
sl@0: 	OPENSSL_cleanse(pkey->private_key->data, rsalen);
sl@0: 		
sl@0: 	if (cb == NULL)
sl@0: 		cb=EVP_read_pw_string;
sl@0: 	i=cb((char *)buf,256,"Enter Private Key password:",1);
sl@0: 	if (i != 0)
sl@0: 		{
sl@0: 		ASN1err(ASN1_F_I2D_RSA_NET,ASN1_R_BAD_PASSWORD_READ);
sl@0: 		goto err;
sl@0: 		}
sl@0: 	i = strlen((char *)buf);
sl@0: 	/* If the key is used for SGC the algorithm is modified a little. */
sl@0: 	if(sgckey) {
sl@0: 		EVP_Digest(buf, i, buf, NULL, EVP_md5(), NULL);
sl@0: 		memcpy(buf + 16, "SGCKEYSALT", 10);
sl@0: 		i = 26;
sl@0: 	}
sl@0: 
sl@0: 	EVP_BytesToKey(EVP_rc4(),EVP_md5(),NULL,buf,i,1,key,NULL);
sl@0: 	OPENSSL_cleanse(buf,256);
sl@0: 
sl@0: 	/* Encrypt private key in place */
sl@0: 	zz = enckey->enckey->digest->data;
sl@0: 	EVP_CIPHER_CTX_init(&ctx);
sl@0: 	EVP_EncryptInit_ex(&ctx,EVP_rc4(),NULL,key,NULL);
sl@0: 	EVP_EncryptUpdate(&ctx,zz,&i,zz,pkeylen);
sl@0: 	EVP_EncryptFinal_ex(&ctx,zz + i,&j);
sl@0: 	EVP_CIPHER_CTX_cleanup(&ctx);
sl@0: 
sl@0: 	ret = i2d_NETSCAPE_ENCRYPTED_PKEY(enckey, pp);
sl@0: err:
sl@0: 	NETSCAPE_ENCRYPTED_PKEY_free(enckey);
sl@0: 	NETSCAPE_PKEY_free(pkey);
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: 
sl@0: EXPORT_C RSA *d2i_Netscape_RSA(RSA **a, const unsigned char **pp, long length,
sl@0: 		      int (*cb)(char *buf, int len, const char *prompt,
sl@0: 				int verify))
sl@0: {
sl@0: 	return d2i_RSA_NET(a, pp, length, cb, 0);
sl@0: }
sl@0: 
sl@0: EXPORT_C RSA *d2i_RSA_NET(RSA **a, const unsigned char **pp, long length,
sl@0: 		 int (*cb)(char *buf, int len, const char *prompt, int verify),
sl@0: 		 int sgckey)
sl@0: 	{
sl@0: 	RSA *ret=NULL;
sl@0: 	const unsigned char *p, *kp;
sl@0: 	NETSCAPE_ENCRYPTED_PKEY *enckey = NULL;
sl@0: 
sl@0: 	p = *pp;
sl@0: 
sl@0: 	enckey = d2i_NETSCAPE_ENCRYPTED_PKEY(NULL, &p, length);
sl@0: 	if(!enckey) {
sl@0: 		ASN1err(ASN1_F_D2I_RSA_NET,ASN1_R_DECODING_ERROR);
sl@0: 		return NULL;
sl@0: 	}
sl@0: 
sl@0: 	if ((enckey->os->length != 11) || (strncmp("private-key",
sl@0: 		(char *)enckey->os->data,11) != 0))
sl@0: 		{
sl@0: 		ASN1err(ASN1_F_D2I_RSA_NET,ASN1_R_PRIVATE_KEY_HEADER_MISSING);
sl@0: 		NETSCAPE_ENCRYPTED_PKEY_free(enckey);
sl@0: 		return NULL;
sl@0: 		}
sl@0: 	if (OBJ_obj2nid(enckey->enckey->algor->algorithm) != NID_rc4)
sl@0: 		{
sl@0: 		ASN1err(ASN1_F_D2I_RSA_NET,ASN1_R_UNSUPPORTED_ENCRYPTION_ALGORITHM);
sl@0: 		goto err;
sl@0: 	}
sl@0: 	kp = enckey->enckey->digest->data;
sl@0: 	if (cb == NULL)
sl@0: 		cb=EVP_read_pw_string;
sl@0: 	if ((ret=d2i_RSA_NET_2(a, enckey->enckey->digest,cb, sgckey)) == NULL) goto err;
sl@0: 
sl@0: 	*pp = p;
sl@0: 
sl@0: 	err:
sl@0: 	NETSCAPE_ENCRYPTED_PKEY_free(enckey);
sl@0: 	return ret;
sl@0: 
sl@0: 	}
sl@0: 
sl@0: static RSA *d2i_RSA_NET_2(RSA **a, ASN1_OCTET_STRING *os,
sl@0: 			  int (*cb)(char *buf, int len, const char *prompt,
sl@0: 				    int verify), int sgckey)
sl@0: 	{
sl@0: 	NETSCAPE_PKEY *pkey=NULL;
sl@0: 	RSA *ret=NULL;
sl@0: 	int i,j;
sl@0: 	unsigned char buf[256];
sl@0: 	const unsigned char *zz;
sl@0: 	unsigned char key[EVP_MAX_KEY_LENGTH];
sl@0: 	EVP_CIPHER_CTX ctx;
sl@0: 
sl@0: 	i=cb((char *)buf,256,"Enter Private Key password:",0);
sl@0: 	if (i != 0)
sl@0: 		{
sl@0: 		ASN1err(ASN1_F_D2I_RSA_NET_2,ASN1_R_BAD_PASSWORD_READ);
sl@0: 		goto err;
sl@0: 		}
sl@0: 
sl@0: 	i = strlen((char *)buf);
sl@0: 	if(sgckey){
sl@0: 		EVP_Digest(buf, i, buf, NULL, EVP_md5(), NULL);
sl@0: 		memcpy(buf + 16, "SGCKEYSALT", 10);
sl@0: 		i = 26;
sl@0: 	}
sl@0: 		
sl@0: 	EVP_BytesToKey(EVP_rc4(),EVP_md5(),NULL,buf,i,1,key,NULL);
sl@0: 	OPENSSL_cleanse(buf,256);
sl@0: 
sl@0: 	EVP_CIPHER_CTX_init(&ctx);
sl@0: 	EVP_DecryptInit_ex(&ctx,EVP_rc4(),NULL, key,NULL);
sl@0: 	EVP_DecryptUpdate(&ctx,os->data,&i,os->data,os->length);
sl@0: 	EVP_DecryptFinal_ex(&ctx,&(os->data[i]),&j);
sl@0: 	EVP_CIPHER_CTX_cleanup(&ctx);
sl@0: 	os->length=i+j;
sl@0: 
sl@0: 	zz=os->data;
sl@0: 
sl@0: 	if ((pkey=d2i_NETSCAPE_PKEY(NULL,&zz,os->length)) == NULL)
sl@0: 		{
sl@0: 		ASN1err(ASN1_F_D2I_RSA_NET_2,ASN1_R_UNABLE_TO_DECODE_RSA_PRIVATE_KEY);
sl@0: 		goto err;
sl@0: 		}
sl@0: 		
sl@0: 	zz=pkey->private_key->data;
sl@0: 	if ((ret=d2i_RSAPrivateKey(a,&zz,pkey->private_key->length)) == NULL)
sl@0: 		{
sl@0: 		ASN1err(ASN1_F_D2I_RSA_NET_2,ASN1_R_UNABLE_TO_DECODE_RSA_KEY);
sl@0: 		goto err;
sl@0: 		}
sl@0: 		
sl@0: err:
sl@0: 	NETSCAPE_PKEY_free(pkey);
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: #endif /* OPENSSL_NO_RC4 */
sl@0: 
sl@0: #else /* !OPENSSL_NO_RSA */
sl@0: 
sl@0: # if PEDANTIC
sl@0: static void *dummy=&dummy;
sl@0: # endif
sl@0: 
sl@0: #endif