/* crypto/asn1/n_pkey.c *//* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. * * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. *  * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to.  The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code.  The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). *  * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. *  * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the copyright *    notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright *    notice, this list of conditions and the following disclaimer in the *    documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software *    must display the following acknowledgement: *    "This product includes cryptographic software written by *     Eric Young (eay@cryptsoft.com)" *    The word 'cryptographic' can be left out if the rouines from the library *    being used are not cryptographic related :-). * 4. If you include any Windows specific code (or a derivative thereof) from  *    the apps directory (application code) you must include an acknowledgement: *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" *  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. *  * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed.  i.e. this code cannot simply be * copied and put under another distribution licence * [including the GNU Public Licence.] */#ifndef OPENSSL_NO_RSA#include <stdio.h>#include "cryptlib.h"#include <openssl/rsa.h>#include <openssl/objects.h>#include <openssl/asn1t.h>#include <openssl/asn1_mac.h>#include <openssl/evp.h>#include <openssl/x509.h>#ifndef OPENSSL_NO_RC4typedef struct netscape_pkey_st	{	long version;	X509_ALGOR *algor;	ASN1_OCTET_STRING *private_key;	} NETSCAPE_PKEY;typedef struct netscape_encrypted_pkey_st	{	ASN1_OCTET_STRING *os;	/* This is the same structure as DigestInfo so use it:	 * although this isn't really anything to do with	 * digests.	 */	X509_SIG *enckey;	} NETSCAPE_ENCRYPTED_PKEY;ASN1_BROKEN_SEQUENCE(NETSCAPE_ENCRYPTED_PKEY) = {	ASN1_SIMPLE(NETSCAPE_ENCRYPTED_PKEY, os, ASN1_OCTET_STRING),	ASN1_SIMPLE(NETSCAPE_ENCRYPTED_PKEY, enckey, X509_SIG)} ASN1_BROKEN_SEQUENCE_END(NETSCAPE_ENCRYPTED_PKEY)DECLARE_ASN1_FUNCTIONS_const(NETSCAPE_ENCRYPTED_PKEY)DECLARE_ASN1_ENCODE_FUNCTIONS_const(NETSCAPE_ENCRYPTED_PKEY,NETSCAPE_ENCRYPTED_PKEY)IMPLEMENT_ASN1_FUNCTIONS_const(NETSCAPE_ENCRYPTED_PKEY)ASN1_SEQUENCE(NETSCAPE_PKEY) = {	ASN1_SIMPLE(NETSCAPE_PKEY, version, LONG),	ASN1_SIMPLE(NETSCAPE_PKEY, algor, X509_ALGOR),	ASN1_SIMPLE(NETSCAPE_PKEY, private_key, ASN1_OCTET_STRING)} ASN1_SEQUENCE_END(NETSCAPE_PKEY)DECLARE_ASN1_FUNCTIONS_const(NETSCAPE_PKEY)DECLARE_ASN1_ENCODE_FUNCTIONS_const(NETSCAPE_PKEY,NETSCAPE_PKEY)IMPLEMENT_ASN1_FUNCTIONS_const(NETSCAPE_PKEY)static RSA *d2i_RSA_NET_2(RSA **a, ASN1_OCTET_STRING *os,	     int (*cb)(), int sgckey);int i2d_Netscape_RSA(const RSA *a, unsigned char **pp, int (*cb)()){	return i2d_RSA_NET(a, pp, cb, 0);}int i2d_RSA_NET(const RSA *a, unsigned char **pp, int (*cb)(), int sgckey)	{	int i, j, ret = 0;	int rsalen, pkeylen, olen;	NETSCAPE_PKEY *pkey = NULL;	NETSCAPE_ENCRYPTED_PKEY *enckey = NULL;	unsigned char buf[256],*zz;	unsigned char key[EVP_MAX_KEY_LENGTH];	EVP_CIPHER_CTX ctx;	if (a == NULL) return(0);	if ((pkey=NETSCAPE_PKEY_new()) == NULL) goto err;	if ((enckey=NETSCAPE_ENCRYPTED_PKEY_new()) == NULL) goto err;	pkey->version = 0;	pkey->algor->algorithm=OBJ_nid2obj(NID_rsaEncryption);	if ((pkey->algor->parameter=ASN1_TYPE_new()) == NULL) goto err;	pkey->algor->parameter->type=V_ASN1_NULL;	rsalen = i2d_RSAPrivateKey(a, NULL);	/* Fake some octet strings just for the initial length	 * calculation. 	 */	pkey->private_key->length=rsalen;	pkeylen=i2d_NETSCAPE_PKEY(pkey,NULL);	enckey->enckey->digest->length = pkeylen;	enckey->os->length = 11;	/* "private-key" */	enckey->enckey->algor->algorithm=OBJ_nid2obj(NID_rc4);	if ((enckey->enckey->algor->parameter=ASN1_TYPE_new()) == NULL) goto err;	enckey->enckey->algor->parameter->type=V_ASN1_NULL;	if (pp == NULL)		{		olen = i2d_NETSCAPE_ENCRYPTED_PKEY(enckey, NULL);		NETSCAPE_PKEY_free(pkey);		NETSCAPE_ENCRYPTED_PKEY_free(enckey);		return olen;		}	/* Since its RC4 encrypted length is actual length */	if ((zz=(unsigned char *)OPENSSL_malloc(rsalen)) == NULL)		{		ASN1err(ASN1_F_I2D_NETSCAPE_RSA,ERR_R_MALLOC_FAILURE);		goto err;		}	pkey->private_key->data = zz;	/* Write out private key encoding */	i2d_RSAPrivateKey(a,&zz);	if ((zz=OPENSSL_malloc(pkeylen)) == NULL)		{		ASN1err(ASN1_F_I2D_NETSCAPE_RSA,ERR_R_MALLOC_FAILURE);		goto err;		}	if (!ASN1_STRING_set(enckey->os, "private-key", -1)) 		{		ASN1err(ASN1_F_I2D_NETSCAPE_RSA,ERR_R_MALLOC_FAILURE);		goto err;		}	enckey->enckey->digest->data = zz;	i2d_NETSCAPE_PKEY(pkey,&zz);	/* Wipe the private key encoding */	OPENSSL_cleanse(pkey->private_key->data, rsalen);			if (cb == NULL)		cb=EVP_read_pw_string;	i=cb(buf,256,"Enter Private Key password:",1);	if (i != 0)		{		ASN1err(ASN1_F_I2D_NETSCAPE_RSA,ASN1_R_BAD_PASSWORD_READ);		goto err;		}	i = strlen((char *)buf);	/* If the key is used for SGC the algorithm is modified a little. */	if(sgckey) {		EVP_Digest(buf, i, buf, NULL, EVP_md5(), NULL);		memcpy(buf + 16, "SGCKEYSALT", 10);		i = 26;	}	EVP_BytesToKey(EVP_rc4(),EVP_md5(),NULL,buf,i,1,key,NULL);	OPENSSL_cleanse(buf,256);	/* Encrypt private key in place */	zz = enckey->enckey->digest->data;	EVP_CIPHER_CTX_init(&ctx);	EVP_EncryptInit_ex(&ctx,EVP_rc4(),NULL,key,NULL);	EVP_EncryptUpdate(&ctx,zz,&i,zz,pkeylen);	EVP_EncryptFinal_ex(&ctx,zz + i,&j);	EVP_CIPHER_CTX_cleanup(&ctx);	ret = i2d_NETSCAPE_ENCRYPTED_PKEY(enckey, pp);err:	NETSCAPE_ENCRYPTED_PKEY_free(enckey);	NETSCAPE_PKEY_free(pkey);	return(ret);	}RSA *d2i_Netscape_RSA(RSA **a, const unsigned char **pp, long length, int (*cb)()){	return d2i_RSA_NET(a, pp, length, cb, 0);}RSA *d2i_RSA_NET(RSA **a, const unsigned char **pp, long length, int (*cb)(), int sgckey)	{	RSA *ret=NULL;	const unsigned char *p, *kp;	NETSCAPE_ENCRYPTED_PKEY *enckey = NULL;	p = *pp;	enckey = d2i_NETSCAPE_ENCRYPTED_PKEY(NULL, &p, length);	if(!enckey) {		ASN1err(ASN1_F_D2I_NETSCAPE_RSA,ASN1_R_DECODING_ERROR);		return NULL;	}	if ((enckey->os->length != 11) || (strncmp("private-key",		(char *)enckey->os->data,11) != 0))		{		ASN1err(ASN1_F_D2I_NETSCAPE_RSA,ASN1_R_PRIVATE_KEY_HEADER_MISSING);		NETSCAPE_ENCRYPTED_PKEY_free(enckey);		return NULL;		}	if (OBJ_obj2nid(enckey->enckey->algor->algorithm) != NID_rc4)		{		ASN1err(ASN1_F_D2I_NETSCAPE_RSA_2,ASN1_R_UNSUPPORTED_ENCRYPTION_ALGORITHM);		goto err;	}	kp = enckey->enckey->digest->data;	if (cb == NULL)		cb=EVP_read_pw_string;	if ((ret=d2i_RSA_NET_2(a, enckey->enckey->digest,cb, sgckey)) == NULL) goto err;	*pp = p;	err:	NETSCAPE_ENCRYPTED_PKEY_free(enckey);	return ret;	}static RSA *d2i_RSA_NET_2(RSA **a, ASN1_OCTET_STRING *os,	     int (*cb)(), int sgckey)	{	NETSCAPE_PKEY *pkey=NULL;	RSA *ret=NULL;	int i,j;	unsigned char buf[256];	const unsigned char *zz;	unsigned char key[EVP_MAX_KEY_LENGTH];	EVP_CIPHER_CTX ctx;	i=cb(buf,256,"Enter Private Key password:",0);	if (i != 0)		{		ASN1err(ASN1_F_D2I_NETSCAPE_RSA_2,ASN1_R_BAD_PASSWORD_READ);		goto err;		}	i = strlen((char *)buf);	if(sgckey){		EVP_Digest(buf, i, buf, NULL, EVP_md5(), NULL);		memcpy(buf + 16, "SGCKEYSALT", 10);		i = 26;	}			EVP_BytesToKey(EVP_rc4(),EVP_md5(),NULL,buf,i,1,key,NULL);	OPENSSL_cleanse(buf,256);	EVP_CIPHER_CTX_init(&ctx);	EVP_DecryptInit_ex(&ctx,EVP_rc4(),NULL, key,NULL);	EVP_DecryptUpdate(&ctx,os->data,&i,os->data,os->length);	EVP_DecryptFinal_ex(&ctx,&(os->data[i]),&j);	EVP_CIPHER_CTX_cleanup(&ctx);	os->length=i+j;	zz=os->data;	if ((pkey=d2i_NETSCAPE_PKEY(NULL,&zz,os->length)) == NULL)		{		ASN1err(ASN1_F_D2I_NETSCAPE_RSA_2,ASN1_R_UNABLE_TO_DECODE_RSA_PRIVATE_KEY);		goto err;		}			zz=pkey->private_key->data;	if ((ret=d2i_RSAPrivateKey(a,&zz,pkey->private_key->length)) == NULL)		{		ASN1err(ASN1_F_D2I_NETSCAPE_RSA_2,ASN1_R_UNABLE_TO_DECODE_RSA_KEY);		goto err;		}err:	NETSCAPE_PKEY_free(pkey);	return(ret);	}#endif /* OPENSSL_NO_RC4 */#else /* !OPENSSL_NO_RSA */# if PEDANTICstatic void *dummy=&dummy;# endif#endif