/* crypto/asn1/t_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.]

 */

/* ====================================================================

 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.

 * Binary polynomial ECC support in OpenSSL originally developed by 

 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.

 */

/*

 © Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.

 */

#include <stdio.h>

#include "cryptlib.h"

#include <openssl/objects.h>

#include <openssl/buffer.h>

#include <openssl/bn.h>

#ifndef OPENSSL_NO_RSA

#include <openssl/rsa.h>

#endif

#ifndef OPENSSL_NO_DH

#include <openssl/dh.h>

#endif

#ifndef OPENSSL_NO_DSA

#include <openssl/dsa.h>

#endif

#ifndef OPENSSL_NO_EC

#include <openssl/ec.h>

#endif

static int print(BIO *fp,const char *str, const BIGNUM *num,

		unsigned char *buf,int off);

#ifndef OPENSSL_NO_EC

static int print_bin(BIO *fp, const char *str, const unsigned char *num,

		size_t len, int off);

#endif

#ifndef OPENSSL_NO_RSA

#ifndef OPENSSL_NO_FP_API

EXPORT_C int RSA_print_fp(FILE *fp, const RSA *x, int off)

	{

	BIO *b;

	int ret;

	if ((b=BIO_new(BIO_s_file())) == NULL)

		{

		RSAerr(RSA_F_RSA_PRINT_FP,ERR_R_BUF_LIB);

		return(0);

		}

	BIO_set_fp(b,fp,BIO_NOCLOSE);

	ret=RSA_print(b,x,off);

	BIO_free(b);

	return(ret);

	}

#endif

EXPORT_C int RSA_print(BIO *bp, const RSA *x, int off)

	{

#ifndef SYMBAIN		

	char str[128];

#else

  char str[50];

#endif	

		const char *s;

	unsigned char *m=NULL;

	int ret=0, mod_len = 0;

	size_t buf_len=0, i;

	if (x->n)

		buf_len = (size_t)BN_num_bytes(x->n);

	if (x->e)

		if (buf_len < (i = (size_t)BN_num_bytes(x->e)))

			buf_len = i;

	if (x->d)

		if (buf_len < (i = (size_t)BN_num_bytes(x->d)))

			buf_len = i;

	if (x->p)

		if (buf_len < (i = (size_t)BN_num_bytes(x->p)))

			buf_len = i;

	if (x->q)

		if (buf_len < (i = (size_t)BN_num_bytes(x->q)))

			buf_len = i;

	if (x->dmp1)

		if (buf_len < (i = (size_t)BN_num_bytes(x->dmp1)))

			buf_len = i;

	if (x->dmq1)

		if (buf_len < (i = (size_t)BN_num_bytes(x->dmq1)))

			buf_len = i;

	if (x->iqmp)

		if (buf_len < (i = (size_t)BN_num_bytes(x->iqmp)))

			buf_len = i;

	m=(unsigned char *)OPENSSL_malloc(buf_len+10);

	if (m == NULL)

		{

		RSAerr(RSA_F_RSA_PRINT,ERR_R_MALLOC_FAILURE);

		goto err;

		}

	if (x->n != NULL)

		mod_len = BN_num_bits(x->n);

	if (x->d != NULL)

		{

		if(!BIO_indent(bp,off,128))

		   goto err;

		if (BIO_printf(bp,"Private-Key: (%d bit)\n", mod_len)

			<= 0) goto err;

		}

	if (x->d == NULL)

		BIO_snprintf(str,sizeof str,"Modulus (%d bit):", mod_len);

	else

		BUF_strlcpy(str,"modulus:",sizeof str);

	if (!print(bp,str,x->n,m,off)) goto err;

	s=(x->d == NULL)?"Exponent:":"publicExponent:";

	if ((x->e != NULL) && !print(bp,s,x->e,m,off))

		goto err;

	if ((x->d != NULL) && !print(bp,"privateExponent:",x->d,m,off))

		goto err;

	if ((x->p != NULL) && !print(bp,"prime1:",x->p,m,off))

		goto err;

	if ((x->q != NULL) && !print(bp,"prime2:",x->q,m,off))

		goto err;

	if ((x->dmp1 != NULL) && !print(bp,"exponent1:",x->dmp1,m,off))

		goto err;

	if ((x->dmq1 != NULL) && !print(bp,"exponent2:",x->dmq1,m,off))

		goto err;

	if ((x->iqmp != NULL) && !print(bp,"coefficient:",x->iqmp,m,off))

		goto err;

	ret=1;

err:

	if (m != NULL) OPENSSL_free(m);

	return(ret);

	}

#endif /* OPENSSL_NO_RSA */

#ifndef OPENSSL_NO_DSA

#ifndef OPENSSL_NO_FP_API

EXPORT_C int DSA_print_fp(FILE *fp, const DSA *x, int off)

	{

	BIO *b;

	int ret;

	if ((b=BIO_new(BIO_s_file())) == NULL)

		{

		DSAerr(DSA_F_DSA_PRINT_FP,ERR_R_BUF_LIB);

		return(0);

		}

	BIO_set_fp(b,fp,BIO_NOCLOSE);

	ret=DSA_print(b,x,off);

	BIO_free(b);

	return(ret);

	}

#endif

EXPORT_C int DSA_print(BIO *bp, const DSA *x, int off)

	{

	unsigned char *m=NULL;

	int ret=0;

	size_t buf_len=0,i;

	if (x->p)

		buf_len = (size_t)BN_num_bytes(x->p);

	else

		{

		DSAerr(DSA_F_DSA_PRINT,DSA_R_MISSING_PARAMETERS);

		goto err;

		}

	if (x->q)

		if (buf_len < (i = (size_t)BN_num_bytes(x->q)))

			buf_len = i;

	if (x->g)

		if (buf_len < (i = (size_t)BN_num_bytes(x->g)))

			buf_len = i;

	if (x->priv_key)

		if (buf_len < (i = (size_t)BN_num_bytes(x->priv_key)))

			buf_len = i;

	if (x->pub_key)

		if (buf_len < (i = (size_t)BN_num_bytes(x->pub_key)))

			buf_len = i;

	m=(unsigned char *)OPENSSL_malloc(buf_len+10);

	if (m == NULL)

		{

		DSAerr(DSA_F_DSA_PRINT,ERR_R_MALLOC_FAILURE);

		goto err;

		}

	if (x->priv_key != NULL)

		{

		if(!BIO_indent(bp,off,128))

		   goto err;

		if (BIO_printf(bp,"Private-Key: (%d bit)\n",BN_num_bits(x->p))

			<= 0) goto err;

		}

	if ((x->priv_key != NULL) && !print(bp,"priv:",x->priv_key,m,off))

		goto err;

	if ((x->pub_key  != NULL) && !print(bp,"pub: ",x->pub_key,m,off))

		goto err;

	if ((x->p != NULL) && !print(bp,"P:   ",x->p,m,off)) goto err;

	if ((x->q != NULL) && !print(bp,"Q:   ",x->q,m,off)) goto err;

	if ((x->g != NULL) && !print(bp,"G:   ",x->g,m,off)) goto err;

	ret=1;

err:

	if (m != NULL) OPENSSL_free(m);

	return(ret);

	}

#endif /* !OPENSSL_NO_DSA */

#ifndef OPENSSL_NO_EC

#ifndef OPENSSL_NO_FP_API

EXPORT_C int ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x, int off)

	{

	BIO *b;

	int ret;

	if ((b=BIO_new(BIO_s_file())) == NULL)

		{

		ECerr(EC_F_ECPKPARAMETERS_PRINT_FP,ERR_R_BUF_LIB);

		return(0);

		}

	BIO_set_fp(b, fp, BIO_NOCLOSE);

	ret = ECPKParameters_print(b, x, off);

	BIO_free(b);

	return(ret);

	}

EXPORT_C int EC_KEY_print_fp(FILE *fp, const EC_KEY *x, int off)

	{

	BIO *b;

	int ret;

	if ((b=BIO_new(BIO_s_file())) == NULL)

		{

		ECerr(EC_F_EC_KEY_PRINT_FP, ERR_R_BIO_LIB);

		return(0);

		}

	BIO_set_fp(b, fp, BIO_NOCLOSE);

	ret = EC_KEY_print(b, x, off);

	BIO_free(b);

	return(ret);

	}

#endif

EXPORT_C int ECPKParameters_print(BIO *bp, const EC_GROUP *x, int off)

	{

	unsigned char *buffer=NULL;

	size_t	buf_len=0, i;

	int     ret=0, reason=ERR_R_BIO_LIB;

	BN_CTX  *ctx=NULL;

	const EC_POINT *point=NULL;

	BIGNUM	*p=NULL, *a=NULL, *b=NULL, *gen=NULL,

		*order=NULL, *cofactor=NULL;

	const unsigned char *seed;

	size_t	seed_len=0;

	static const char *gen_compressed = "Generator (compressed):";

	static const char *gen_uncompressed = "Generator (uncompressed):";

	static const char *gen_hybrid = "Generator (hybrid):";

	if (!x)

		{

		reason = ERR_R_PASSED_NULL_PARAMETER;

		goto err;

		}

	if (EC_GROUP_get_asn1_flag(x))

		{

		/* the curve parameter are given by an asn1 OID */

		int nid;

		if (!BIO_indent(bp, off, 128))

			goto err;

		nid = EC_GROUP_get_curve_name(x);

		if (nid == 0)

			goto err;

		if (BIO_printf(bp, "ASN1 OID: %s", OBJ_nid2sn(nid)) <= 0)

			goto err;

		if (BIO_printf(bp, "\n") <= 0)

			goto err;

		}

	else

		{

		/* explicit parameters */

		int is_char_two = 0;

		point_conversion_form_t form;

		int tmp_nid = EC_METHOD_get_field_type(EC_GROUP_method_of(x));

		if (tmp_nid == NID_X9_62_characteristic_two_field)

			is_char_two = 1;

		if ((p = BN_new()) == NULL || (a = BN_new()) == NULL ||

			(b = BN_new()) == NULL || (order = BN_new()) == NULL ||

			(cofactor = BN_new()) == NULL)

			{

			reason = ERR_R_MALLOC_FAILURE;

			goto err;

			}

		if (is_char_two)

			{

			if (!EC_GROUP_get_curve_GF2m(x, p, a, b, ctx))

				{

				reason = ERR_R_EC_LIB;

				goto err;

				}

			}

		else /* prime field */

			{

			if (!EC_GROUP_get_curve_GFp(x, p, a, b, ctx))

				{

				reason = ERR_R_EC_LIB;

				goto err;

				}

			}

		if ((point = EC_GROUP_get0_generator(x)) == NULL)

			{

			reason = ERR_R_EC_LIB;

			goto err;

			}

		if (!EC_GROUP_get_order(x, order, NULL) || 

            		!EC_GROUP_get_cofactor(x, cofactor, NULL))

			{

			reason = ERR_R_EC_LIB;

			goto err;

			}

		form = EC_GROUP_get_point_conversion_form(x);

		if ((gen = EC_POINT_point2bn(x, point, 

				form, NULL, ctx)) == NULL)

			{

			reason = ERR_R_EC_LIB;

			goto err;

			}

		buf_len = (size_t)BN_num_bytes(p);

		if (buf_len < (i = (size_t)BN_num_bytes(a)))

			buf_len = i;

		if (buf_len < (i = (size_t)BN_num_bytes(b)))

			buf_len = i;

		if (buf_len < (i = (size_t)BN_num_bytes(gen)))

			buf_len = i;

		if (buf_len < (i = (size_t)BN_num_bytes(order)))

			buf_len = i;

		if (buf_len < (i = (size_t)BN_num_bytes(cofactor))) 

			buf_len = i;

		if ((seed = EC_GROUP_get0_seed(x)) != NULL)

			seed_len = EC_GROUP_get_seed_len(x);

		buf_len += 10;

		if ((buffer = OPENSSL_malloc(buf_len)) == NULL)

			{

			reason = ERR_R_MALLOC_FAILURE;

			goto err;

			}

		if (!BIO_indent(bp, off, 128))

			goto err;

		/* print the 'short name' of the field type */

		if (BIO_printf(bp, "Field Type: %s\n", OBJ_nid2sn(tmp_nid))

			<= 0)

			goto err;  

		if (is_char_two)

			{

			/* print the 'short name' of the base type OID */

			int basis_type = EC_GROUP_get_basis_type(x);

			if (basis_type == 0)

				goto err;

			if (!BIO_indent(bp, off, 128))

				goto err;

			if (BIO_printf(bp, "Basis Type: %s\n", 

				OBJ_nid2sn(basis_type)) <= 0)

				goto err;

			/* print the polynomial */

			if ((p != NULL) && !print(bp, "Polynomial:", p, buffer,

				off))

				goto err;

			}

		else

			{

			if ((p != NULL) && !print(bp, "Prime:", p, buffer,off))

				goto err;

			}

		if ((a != NULL) && !print(bp, "A:   ", a, buffer, off)) 

			goto err;

		if ((b != NULL) && !print(bp, "B:   ", b, buffer, off))

			goto err;

		if (form == POINT_CONVERSION_COMPRESSED)

			{

			if ((gen != NULL) && !print(bp, gen_compressed, gen,

				buffer, off))

				goto err;

			}

		else if (form == POINT_CONVERSION_UNCOMPRESSED)

			{

			if ((gen != NULL) && !print(bp, gen_uncompressed, gen,

				buffer, off))

				goto err;

			}

		else /* form == POINT_CONVERSION_HYBRID */

			{

			if ((gen != NULL) && !print(bp, gen_hybrid, gen,

				buffer, off))

				goto err;

			}

		if ((order != NULL) && !print(bp, "Order: ", order, 

			buffer, off)) goto err;

		if ((cofactor != NULL) && !print(bp, "Cofactor: ", cofactor, 

			buffer, off)) goto err;

		if (seed && !print_bin(bp, "Seed:", seed, seed_len, off))

			goto err;

		}

	ret=1;

err:

	if (!ret)

 		ECerr(EC_F_ECPKPARAMETERS_PRINT, reason);

	if (p) 

		BN_free(p);

	if (a) 

		BN_free(a);

	if (b)

		BN_free(b);

	if (gen)

		BN_free(gen);

	if (order)

		BN_free(order);

	if (cofactor)

		BN_free(cofactor);

	if (ctx)

		BN_CTX_free(ctx);

	if (buffer != NULL) 

		OPENSSL_free(buffer);

	return(ret);	

	}

EXPORT_C int EC_KEY_print(BIO *bp, const EC_KEY *x, int off)

	{

	unsigned char *buffer=NULL;

	size_t	buf_len=0, i;

	int     ret=0, reason=ERR_R_BIO_LIB;

	BIGNUM  *pub_key=NULL, *order=NULL;

	BN_CTX  *ctx=NULL;

	const EC_GROUP *group;

	const EC_POINT *public_key;

	const BIGNUM *priv_key;

	if (x == NULL || (group = EC_KEY_get0_group(x)) == NULL)

		{

		reason = ERR_R_PASSED_NULL_PARAMETER;

		goto err;

		}

	public_key = EC_KEY_get0_public_key(x);

	if ((pub_key = EC_POINT_point2bn(group, public_key,

		EC_KEY_get_conv_form(x), NULL, ctx)) == NULL)

		{

		reason = ERR_R_EC_LIB;

		goto err;

		}

	buf_len = (size_t)BN_num_bytes(pub_key);

	priv_key = EC_KEY_get0_private_key(x);

	if (priv_key != NULL)