/* 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)

 		{

 		if ((i = (size_t)BN_num_bytes(priv_key)) > buf_len)

 			buf_len = i;

 		}

 	buf_len += 10;

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

 		{

 		reason = ERR_R_MALLOC_FAILURE;

 		goto err;

 		}

 	if (priv_key != NULL)

 		{

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

 			goto err;

 		if ((order = BN_new()) == NULL)

 			goto err;

 		if (!EC_GROUP_get_order(group, order, NULL))

 			goto err;

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

 			BN_num_bits(order)) <= 0) goto err;

 		}

 	if ((priv_key != NULL) && !print(bp, "priv:", priv_key, 

 		buffer, off))

 		goto err;

 	if ((pub_key != NULL) && !print(bp, "pub: ", pub_key,

 		buffer, off))

 		goto err;

 	if (!ECPKParameters_print(bp, group, off))

 		goto err;

 	ret=1;

 err:

 	if (!ret)

  		ECerr(EC_F_EC_KEY_PRINT, reason);

 	if (pub_key) 

 		BN_free(pub_key);

 	if (order)

 		BN_free(order);

 	if (ctx)

 		BN_CTX_free(ctx);

 	if (buffer != NULL)

 		OPENSSL_free(buffer);

 	return(ret);

 	}

 #endif /* OPENSSL_NO_EC */

 static int print(BIO *bp, const char *number, const BIGNUM *num, unsigned char *buf,

 	     int off)

 	{

 	int n,i;

 	const char *neg;

 	if (num == NULL) return(1);

 	neg = (BN_is_negative(num))?"-":"";

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

 		return 0;

 	if (BN_is_zero(num))

 		{

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

 			return 0;

 		return 1;

 		}

 	if (BN_num_bytes(num) <= BN_BYTES)

 		{

 		if (BIO_printf(bp,"%s %s%lu (%s0x%lx)\n",number,neg,

 			(unsigned long)num->d[0],neg,(unsigned long)num->d[0])

 			<= 0) return(0);

 		}

 	else

 		{

 		buf[0]=0;

 		if (BIO_printf(bp,"%s%s",number,

 			(neg[0] == '-')?" (Negative)":"") <= 0)

 			return(0);

 		n=BN_bn2bin(num,&buf[1]);

 		if (buf[1] & 0x80)

 			n++;

 		else	buf++;

 		for (i=0; i<n; i++)

 			{

 			if ((i%15) == 0)

 				{

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

 				   || !BIO_indent(bp,off+4,128))

 				    return 0;

 				}

 			if (BIO_printf(bp,"%02x%s",buf[i],((i+1) == n)?"":":")

 				<= 0) return(0);

 			}

 		if (BIO_write(bp,"\n",1) <= 0) return(0);

 		}

 	return(1);

 	}

 #ifndef OPENSSL_NO_EC

 static int print_bin(BIO *fp, const char *name, const unsigned char *buf,

 		size_t len, int off)

 	{

 	size_t i;

 #ifndef SYMBIAN	

 	char str[128];

 #else

   char str[80];

 #endif	

 	if (buf == NULL)

 		return 1;

 	if (off)

 		{

 #ifndef SYMBIAN			

 		if (off > 128)

 			off=128;

 #else

 if (off > 80)

 			off=80;

 #endif			

 		memset(str,' ',off);

 		if (BIO_write(fp, str, off) <= 0)

 			return 0;

 		}

 	if (BIO_printf(fp,"%s", name) <= 0)

 		return 0;

 	for (i=0; i<len; i++)

 		{

 		if ((i%15) == 0)

 			{

 			str[0]='\n';

 			memset(&(str[1]),' ',off+4);

 			if (BIO_write(fp, str, off+1+4) <= 0)

 				return 0;

 			}

 		if (BIO_printf(fp,"%02x%s",buf[i],((i+1) == len)?"":":") <= 0)

 			return 0;

 		}

 	if (BIO_write(fp,"\n",1) <= 0)

 		return 0;

 	return 1;

 	}

 #endif

 #ifndef OPENSSL_NO_DH

 #ifndef OPENSSL_NO_FP_API

 EXPORT_C int DHparams_print_fp(FILE *fp, const DH *x)

 	{

 	BIO *b;

 	int ret;

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

 		{

 		DHerr(DH_F_DHPARAMS_PRINT_FP,ERR_R_BUF_LIB);

 		return(0);

 		}

 	BIO_set_fp(b,fp,BIO_NOCLOSE);

 	ret=DHparams_print(b, x);

 	BIO_free(b);

 	return(ret);

 	}

 #endif

 EXPORT_C int DHparams_print(BIO *bp, const DH *x)

 	{

 	unsigned char *m=NULL;

 	int reason=ERR_R_BUF_LIB,ret=0;

 	size_t buf_len=0, i;

 	if (x->p)

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

 	else

 		{

 		reason = ERR_R_PASSED_NULL_PARAMETER;

 		goto err;

 		}

 	if (x->g)

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

 			buf_len = i;

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

 	if (m == NULL)

 		{

 		reason=ERR_R_MALLOC_FAILURE;

 		goto err;

 		}

 	if (BIO_printf(bp,"Diffie-Hellman-Parameters: (%d bit)\n",

 		BN_num_bits(x->p)) <= 0)

 		goto err;

 	if (!print(bp,"prime:",x->p,m,4)) goto err;

 	if (!print(bp,"generator:",x->g,m,4)) goto err;

 	if (x->length != 0)

 		{

 		if (BIO_printf(bp,"    recommended-private-length: %d bits\n",

 			(int)x->length) <= 0) goto err;

 		}

 	ret=1;

 	if (0)

 		{

 err:

 		DHerr(DH_F_DHPARAMS_PRINT,reason);

 		}

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

 	return(ret);

 	}

 #endif

 #ifndef OPENSSL_NO_DSA

 #ifndef OPENSSL_NO_FP_API

 EXPORT_C int DSAparams_print_fp(FILE *fp, const DSA *x)

 	{

 	BIO *b;

 	int ret;

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

 		{

 		DSAerr(DSA_F_DSAPARAMS_PRINT_FP,ERR_R_BUF_LIB);

 		return(0);

 		}

 	BIO_set_fp(b,fp,BIO_NOCLOSE);

 	ret=DSAparams_print(b, x);

 	BIO_free(b);

 	return(ret);

 	}

 #endif

 EXPORT_C int DSAparams_print(BIO *bp, const DSA *x)

 	{

 	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_DSAPARAMS_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;

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

 	if (m == NULL)

 		{

 		DSAerr(DSA_F_DSAPARAMS_PRINT,ERR_R_MALLOC_FAILURE);

 		goto err;

 		}

 	if (BIO_printf(bp,"DSA-Parameters: (%d bit)\n",

 		BN_num_bits(x->p)) <= 0)

 		goto err;

 	if (!print(bp,"p:",x->p,m,4)) goto err;

 	if ((x->q != NULL) && !print(bp,"q:",x->q,m,4)) goto err;

 	if ((x->g != NULL) && !print(bp,"g:",x->g,m,4)) 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 ECParameters_print_fp(FILE *fp, const EC_KEY *x)

 	{

 	BIO *b;

 	int ret;

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

 		{

 		ECerr(EC_F_ECPARAMETERS_PRINT_FP, ERR_R_BIO_LIB);

 		return(0);

 		}

 	BIO_set_fp(b, fp, BIO_NOCLOSE);

 	ret = ECParameters_print(b, x);

 	BIO_free(b);

 	return(ret);

 	}

 #endif

 EXPORT_C int ECParameters_print(BIO *bp, const EC_KEY *x)

 	{

 	int     reason=ERR_R_EC_LIB, ret=0;

 	BIGNUM	*order=NULL;

 	const EC_GROUP *group;

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

 		{

 		reason = ERR_R_PASSED_NULL_PARAMETER;;

 		goto err;

 		}

 	if ((order = BN_new()) == NULL)

 		{

 		reason = ERR_R_MALLOC_FAILURE;

 		goto err;

 		}

 	if (!EC_GROUP_get_order(group, order, NULL))

 		{

 		reason = ERR_R_EC_LIB;

 		goto err;

 		}

 	if (BIO_printf(bp, "ECDSA-Parameters: (%d bit)\n", 

 		BN_num_bits(order)) <= 0)

 		goto err;

 	if (!ECPKParameters_print(bp, group, 4))

 		goto err;

 	ret=1;

 err:

 	if (order)

 		BN_free(order);

 	ECerr(EC_F_ECPARAMETERS_PRINT, reason);

 	return(ret);

 	}

 #endif