text: /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
   * project 2006.
   */
  /* ====================================================================
   * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
   *
   * 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 above 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 acknowledgment:
   *    "This product includes software developed by the OpenSSL Project
   *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
   *
   * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
   *    endorse or promote products derived from this software without
   *    prior written permission. For written permission, please contact
   *    licensing@OpenSSL.org.
   *
   * 5. Products derived from this software may not be called "OpenSSL"
   *    nor may "OpenSSL" appear in their names without prior written
   *    permission of the OpenSSL Project.
   *
   * 6. Redistributions of any form whatsoever must retain the following
   *    acknowledgment:
   *    "This product includes software developed by the OpenSSL Project
   *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
   *
   * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
   * EXPRESSED 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 OpenSSL PROJECT OR
   * ITS 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.
   * ====================================================================
   *
   * This product includes cryptographic software written by Eric Young
   * (eay@cryptsoft.com).  This product includes software written by Tim
   * Hudson (tjh@cryptsoft.com).
   *
   */
  
  #include <stdio.h>
  #include "cryptlib.h"
  #include <openssl/x509.h>
  #include <openssl/asn1.h>
  #include <openssl/dsa.h>
  #include <openssl/bn.h>
  #ifndef OPENSSL_NO_CMS
  #include <openssl/cms.h>
  #endif
  #include "asn1_locl.h"
  
  static int dsa_pub_decode(EVP_PKEY *pkey, X509_PUBKEY *pubkey)
  	{
  	const unsigned char *p, *pm;
  	int pklen, pmlen;
  	int ptype;
  	void *pval;
  	ASN1_STRING *pstr;
  	X509_ALGOR *palg;
  	ASN1_INTEGER *public_key = NULL;
  
  	DSA *dsa = NULL;
  
  	if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, &palg, pubkey))
  		return 0;
  	X509_ALGOR_get0(NULL, &ptype, &pval, palg);
  
  
  	if (ptype == V_ASN1_SEQUENCE)
  		{
  		pstr = pval;	
  		pm = pstr->data;
  		pmlen = pstr->length;
  
  		if (!(dsa = d2i_DSAparams(NULL, &pm, pmlen)))
  			{
  			DSAerr(DSA_F_DSA_PUB_DECODE, DSA_R_DECODE_ERROR);
  			goto err;
  			}
  
  		}
  	else if ((ptype == V_ASN1_NULL) || (ptype == V_ASN1_UNDEF))
  		{
  		if (!(dsa = DSA_new()))
  			{
  			DSAerr(DSA_F_DSA_PUB_DECODE, ERR_R_MALLOC_FAILURE);
  			goto err;
  			}
  		}
  	else
  		{
  		DSAerr(DSA_F_DSA_PUB_DECODE, DSA_R_PARAMETER_ENCODING_ERROR);
  		goto err;
  		}
  
  	if (!(public_key=d2i_ASN1_INTEGER(NULL, &p, pklen)))
  		{
  		DSAerr(DSA_F_DSA_PUB_DECODE, DSA_R_DECODE_ERROR);
  		goto err;
  		}
  
  	if (!(dsa->pub_key = ASN1_INTEGER_to_BN(public_key, NULL)))
  		{
  		DSAerr(DSA_F_DSA_PUB_DECODE, DSA_R_BN_DECODE_ERROR);
  		goto err;
  		}
  
  	ASN1_INTEGER_free(public_key);
  	EVP_PKEY_assign_DSA(pkey, dsa);
  	return 1;
  
  	err:
  	if (public_key)
  		ASN1_INTEGER_free(public_key);
  	if (dsa)
  		DSA_free(dsa);
  	return 0;
  
  	}
  
  static int dsa_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey)
  	{
  	DSA *dsa;
  	void *pval = NULL;
  	int ptype;
  	unsigned char *penc = NULL;
  	int penclen;
  
  	dsa=pkey->pkey.dsa;
  	if (pkey->save_parameters && dsa->p && dsa->q && dsa->g)
  		{
  		ASN1_STRING *str;
  		str = ASN1_STRING_new();
  		str->length = i2d_DSAparams(dsa, &str->data);
  		if (str->length <= 0)
  			{
  			DSAerr(DSA_F_DSA_PUB_ENCODE, ERR_R_MALLOC_FAILURE);
  			goto err;
  			}
  		pval = str;
  		ptype = V_ASN1_SEQUENCE;
  		}
  	else
  		ptype = V_ASN1_UNDEF;
  
  	dsa->write_params=0;
  
  	penclen = i2d_DSAPublicKey(dsa, &penc);
  
  	if (penclen <= 0)
  		{
  		DSAerr(DSA_F_DSA_PUB_ENCODE, ERR_R_MALLOC_FAILURE);
  		goto err;
  		}
  
  	if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(EVP_PKEY_DSA),
  				ptype, pval, penc, penclen))
  		return 1;
  
  	err:
  	if (penc)
  		OPENSSL_free(penc);
  	if (pval)
  		ASN1_STRING_free(pval);
  
  	return 0;
  	}
  
  /* In PKCS#8 DSA: you just get a private key integer and parameters in the
   * AlgorithmIdentifier the pubkey must be recalculated.
   */
  	
  static int dsa_priv_decode(EVP_PKEY *pkey, PKCS8_PRIV_KEY_INFO *p8)
  	{
  	const unsigned char *p, *pm;
  	int pklen, pmlen;
  	int ptype;
  	void *pval;
  	ASN1_STRING *pstr;
  	X509_ALGOR *palg;
  	ASN1_INTEGER *privkey = NULL;
  	BN_CTX *ctx = NULL;
  
  	STACK_OF(ASN1_TYPE) *ndsa = NULL;
  	DSA *dsa = NULL;
  
  	if (!PKCS8_pkey_get0(NULL, &p, &pklen, &palg, p8))
  		return 0;
  	X509_ALGOR_get0(NULL, &ptype, &pval, palg);
  
  	/* Check for broken DSA PKCS#8, UGH! */
  	if (*p == (V_ASN1_SEQUENCE|V_ASN1_CONSTRUCTED))
  		{
  		ASN1_TYPE *t1, *t2;
  	    	if(!(ndsa = d2i_ASN1_SEQUENCE_ANY(NULL, &p, pklen)))
  			goto decerr;
  		if (sk_ASN1_TYPE_num(ndsa) != 2)
  			goto decerr;
  		/* Handle Two broken types:
  	    	 * SEQUENCE {parameters, priv_key}
  		 * SEQUENCE {pub_key, priv_key}
  		 */
  
  		t1 = sk_ASN1_TYPE_value(ndsa, 0);
  		t2 = sk_ASN1_TYPE_value(ndsa, 1);
  		if (t1->type == V_ASN1_SEQUENCE)
  			{
  			p8->broken = PKCS8_EMBEDDED_PARAM;
  			pval = t1->value.ptr;
  			}
  		else if (ptype == V_ASN1_SEQUENCE)
  			p8->broken = PKCS8_NS_DB;
  		else
  			goto decerr;
  
  		if (t2->type != V_ASN1_INTEGER)
  			goto decerr;
  
  		privkey = t2->value.integer;
  		}
  	else
  		{
  		const unsigned char *q = p;
  		if (!(privkey=d2i_ASN1_INTEGER(NULL, &p, pklen)))
  			goto decerr;
  		if (privkey->type == V_ASN1_NEG_INTEGER)
  			{
  			p8->broken = PKCS8_NEG_PRIVKEY;
  			ASN1_INTEGER_free(privkey);
  			if (!(privkey=d2i_ASN1_UINTEGER(NULL, &q, pklen)))
  				goto decerr;
  			}
  		if (ptype != V_ASN1_SEQUENCE)
  			goto decerr;
  		}
  
  	pstr = pval;	
  	pm = pstr->data;
  	pmlen = pstr->length;
  	if (!(dsa = d2i_DSAparams(NULL, &pm, pmlen)))
  		goto decerr;
  	/* We have parameters now set private key */
  	if (!(dsa->priv_key = ASN1_INTEGER_to_BN(privkey, NULL)))
  		{
  		DSAerr(DSA_F_DSA_PRIV_DECODE,DSA_R_BN_ERROR);
  		goto dsaerr;
  		}
  	/* Calculate public key */
  	if (!(dsa->pub_key = BN_new()))
  		{
  		DSAerr(DSA_F_DSA_PRIV_DECODE, ERR_R_MALLOC_FAILURE);
  		goto dsaerr;
  		}
  	if (!(ctx = BN_CTX_new()))
  		{
  		DSAerr(DSA_F_DSA_PRIV_DECODE, ERR_R_MALLOC_FAILURE);
  		goto dsaerr;
  		}
  			
  	if (!BN_mod_exp(dsa->pub_key, dsa->g, dsa->priv_key, dsa->p, ctx))
  		{
  		DSAerr(DSA_F_DSA_PRIV_DECODE,DSA_R_BN_ERROR);
  		goto dsaerr;
  		}
  
  	EVP_PKEY_assign_DSA(pkey, dsa);
  	BN_CTX_free (ctx);
  	if(ndsa)
  		sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
  	else
  		ASN1_INTEGER_free(privkey);
  
  	return 1;
  
  	decerr:
  	DSAerr(DSA_F_DSA_PRIV_DECODE, EVP_R_DECODE_ERROR);
  	dsaerr:
  	BN_CTX_free (ctx);
  	if (privkey)
  		ASN1_INTEGER_free(privkey);
  	sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
  	DSA_free(dsa);
  	return 0;
  	}
  
  static int dsa_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey)
  {
  	ASN1_STRING *params = NULL;
  	ASN1_INTEGER *prkey = NULL;
  	unsigned char *dp = NULL;
  	int dplen;
  
  	params = ASN1_STRING_new();
  
  	if (!params)
  		{
  		DSAerr(DSA_F_DSA_PRIV_ENCODE,ERR_R_MALLOC_FAILURE);
  		goto err;
  		}
  
  	params->length = i2d_DSAparams(pkey->pkey.dsa, &params->data);
  	if (params->length <= 0)
  		{
  		DSAerr(DSA_F_DSA_PRIV_ENCODE,ERR_R_MALLOC_FAILURE);
  		goto err;
  		}
  	params->type = V_ASN1_SEQUENCE;
  
  	/* Get private key into integer */
  	prkey = BN_to_ASN1_INTEGER(pkey->pkey.dsa->priv_key, NULL);
  
  	if (!prkey)
  		{
  		DSAerr(DSA_F_DSA_PRIV_ENCODE,DSA_R_BN_ERROR);
  		goto err;
  		}
  
  	dplen = i2d_ASN1_INTEGER(prkey, &dp);
  
  	ASN1_INTEGER_free(prkey);
  
  	if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(NID_dsa), 0,
  				V_ASN1_SEQUENCE, params, dp, dplen))
  		goto err;
  
  	return 1;
  
  err:
  	if (dp != NULL)
  		OPENSSL_free(dp);
  	if (params != NULL)
  		ASN1_STRING_free(params);
  	if (prkey != NULL)
  		ASN1_INTEGER_free(prkey);
  	return 0;
  }
  
  static int int_dsa_size(const EVP_PKEY *pkey)
  	{
  	return(DSA_size(pkey->pkey.dsa));
  	}
  
  static int dsa_bits(const EVP_PKEY *pkey)
  	{
  	return BN_num_bits(pkey->pkey.dsa->p);
  	}
  
  static int dsa_missing_parameters(const EVP_PKEY *pkey)
  	{
  	DSA *dsa;
  	dsa=pkey->pkey.dsa;
  	if ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL))
  			return 1;
  	return 0;
  	}
  
  static int dsa_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from)
  	{
  	BIGNUM *a;
  
  	if ((a=BN_dup(from->pkey.dsa->p)) == NULL)
  		return 0;
  	if (to->pkey.dsa->p != NULL)
  		BN_free(to->pkey.dsa->p);
  	to->pkey.dsa->p=a;
  
  	if ((a=BN_dup(from->pkey.dsa->q)) == NULL)
  		return 0;
  	if (to->pkey.dsa->q != NULL)
  		BN_free(to->pkey.dsa->q);
  	to->pkey.dsa->q=a;
  
  	if ((a=BN_dup(from->pkey.dsa->g)) == NULL)
  		return 0;
  	if (to->pkey.dsa->g != NULL)
  		BN_free(to->pkey.dsa->g);
  	to->pkey.dsa->g=a;
  	return 1;
  	}
  
  static int dsa_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b)
  	{
  	if (	BN_cmp(a->pkey.dsa->p,b->pkey.dsa->p) ||
  		BN_cmp(a->pkey.dsa->q,b->pkey.dsa->q) ||
  		BN_cmp(a->pkey.dsa->g,b->pkey.dsa->g))
  		return 0;
  	else
  		return 1;
  	}
  
  static int dsa_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
  	{
  	if (BN_cmp(b->pkey.dsa->pub_key,a->pkey.dsa->pub_key) != 0)
  		return 0;
  	else
  		return 1;
  	}
  
  static void int_dsa_free(EVP_PKEY *pkey)
  	{
  	DSA_free(pkey->pkey.dsa);
  	}
  
  static void update_buflen(const BIGNUM *b, size_t *pbuflen)
  	{
  	size_t i;
  	if (!b)
  		return;
  	if (*pbuflen < (i = (size_t)BN_num_bytes(b)))
  			*pbuflen = i;
  	}
  
  static int do_dsa_print(BIO *bp, const DSA *x, int off, int ptype)
  	{
  	unsigned char *m=NULL;
  	int ret=0;
  	size_t buf_len=0;
  	const char *ktype = NULL;
  
  	const BIGNUM *priv_key, *pub_key;
  
  	if (ptype == 2)
  		priv_key = x->priv_key;
  	else
  		priv_key = NULL;
  
  	if (ptype > 0)
  		pub_key = x->pub_key;
  	else
  		pub_key = NULL;
  
  	if (ptype == 2)
  		ktype = "Private-Key";
  	else if (ptype == 1)
  		ktype = "Public-Key";
  	else
  		ktype = "DSA-Parameters";
  
  	update_buflen(x->p, &buf_len);
  	update_buflen(x->q, &buf_len);
  	update_buflen(x->g, &buf_len);
  	update_buflen(priv_key, &buf_len);
  	update_buflen(pub_key, &buf_len);
  
  	m=(unsigned char *)OPENSSL_malloc(buf_len+10);
  	if (m == NULL)
  		{
  		DSAerr(DSA_F_DO_DSA_PRINT,ERR_R_MALLOC_FAILURE);
  		goto err;
  		}
  
  	if (priv_key)
  		{
  		if(!BIO_indent(bp,off,128))
  		   goto err;
  		if (BIO_printf(bp,"%s: (%d bit)\n",ktype, BN_num_bits(x->p))
  			<= 0) goto err;
  		}
  
  	if (!ASN1_bn_print(bp,"priv:",priv_key,m,off))
  		goto err;
  	if (!ASN1_bn_print(bp,"pub: ",pub_key,m,off))
  		goto err;
  	if (!ASN1_bn_print(bp,"P:   ",x->p,m,off)) goto err;
  	if (!ASN1_bn_print(bp,"Q:   ",x->q,m,off)) goto err;
  	if (!ASN1_bn_print(bp,"G:   ",x->g,m,off)) goto err;
  	ret=1;
  err:
  	if (m != NULL) OPENSSL_free(m);
  	return(ret);
  	}
  
  static int dsa_param_decode(EVP_PKEY *pkey,
  					const unsigned char **pder, int derlen)
  	{
  	DSA *dsa;
  	if (!(dsa = d2i_DSAparams(NULL, pder, derlen)))
  		{
  		DSAerr(DSA_F_DSA_PARAM_DECODE, ERR_R_DSA_LIB);
  		return 0;
  		}
  	EVP_PKEY_assign_DSA(pkey, dsa);
  	return 1;
  	}
  
  static int dsa_param_encode(const EVP_PKEY *pkey, unsigned char **pder)
  	{
  	return i2d_DSAparams(pkey->pkey.dsa, pder);
  	}
  
  static int dsa_param_print(BIO *bp, const EVP_PKEY *pkey, int indent,
  							ASN1_PCTX *ctx)
  	{
  	return do_dsa_print(bp, pkey->pkey.dsa, indent, 0);
  	}
  
  static int dsa_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent,
  							ASN1_PCTX *ctx)
  	{
  	return do_dsa_print(bp, pkey->pkey.dsa, indent, 1);
  	}
  
  
  static int dsa_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent,
  							ASN1_PCTX *ctx)
  	{
  	return do_dsa_print(bp, pkey->pkey.dsa, indent, 2);
  	}
  
  static int old_dsa_priv_decode(EVP_PKEY *pkey,
  					const unsigned char **pder, int derlen)
  	{
  	DSA *dsa;
  	if (!(dsa = d2i_DSAPrivateKey (NULL, pder, derlen)))
  		{
  		DSAerr(DSA_F_OLD_DSA_PRIV_DECODE, ERR_R_DSA_LIB);
  		return 0;
  		}
  	EVP_PKEY_assign_DSA(pkey, dsa);
  	return 1;
  	}
  
  static int old_dsa_priv_encode(const EVP_PKEY *pkey, unsigned char **pder)
  	{
  	return i2d_DSAPrivateKey(pkey->pkey.dsa, pder);
  	}
  
  static int dsa_sig_print(BIO *bp, const X509_ALGOR *sigalg,
  					const ASN1_STRING *sig,
  					int indent, ASN1_PCTX *pctx)
  	{
  	DSA_SIG *dsa_sig;
  	const unsigned char *p;
  	if (!sig)
  		{
  		if (BIO_puts(bp, "\n") <= 0)
  			return 0;
  		else
  			return 1;
  		}
  	p = sig->data;
  	dsa_sig = d2i_DSA_SIG(NULL, &p, sig->length);
  	if (dsa_sig)
  		{
  		int rv = 0;
  		size_t buf_len = 0;
  		unsigned char *m=NULL;
  		update_buflen(dsa_sig->r, &buf_len);
  		update_buflen(dsa_sig->s, &buf_len);
  		m = OPENSSL_malloc(buf_len+10);
  		if (m == NULL)
  			{
  			DSAerr(DSA_F_DSA_SIG_PRINT,ERR_R_MALLOC_FAILURE);
  			goto err;
  			}
  
  		if (BIO_write(bp, "\n", 1) != 1)
  			goto err;
  
  		if (!ASN1_bn_print(bp,"r:   ",dsa_sig->r,m,indent))
  			goto err;
  		if (!ASN1_bn_print(bp,"s:   ",dsa_sig->s,m,indent))
  			goto err;
  		rv = 1;
  		err:
  		if (m)
  			OPENSSL_free(m);
  		DSA_SIG_free(dsa_sig);
  		return rv;
  		}
  	return X509_signature_dump(bp, sig, indent);
  	}
  
  static int dsa_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2)
  	{
  	switch (op)
  		{
  		case ASN1_PKEY_CTRL_PKCS7_SIGN:
  		if (arg1 == 0)
  			{
  			int snid, hnid;
  			X509_ALGOR *alg1, *alg2;
  			PKCS7_SIGNER_INFO_get0_algs(arg2, NULL, &alg1, &alg2);
  			if (alg1 == NULL || alg1->algorithm == NULL)
  				return -1;
  			hnid = OBJ_obj2nid(alg1->algorithm);
  			if (hnid == NID_undef)
  				return -1;
  			if (!OBJ_find_sigid_by_algs(&snid, hnid, EVP_PKEY_id(pkey)))
  				return -1; 
  			X509_ALGOR_set0(alg2, OBJ_nid2obj(snid), V_ASN1_UNDEF, 0);
  			}
  		return 1;
  #ifndef OPENSSL_NO_CMS
  		case ASN1_PKEY_CTRL_CMS_SIGN:
  		if (arg1 == 0)
  			{
  			int snid, hnid;
  			X509_ALGOR *alg1, *alg2;
  			CMS_SignerInfo_get0_algs(arg2, NULL, NULL, &alg1, &alg2);
  			if (alg1 == NULL || alg1->algorithm == NULL)
  				return -1;
  			hnid = OBJ_obj2nid(alg1->algorithm);
  			if (hnid == NID_undef)
  				return -1;
  			if (!OBJ_find_sigid_by_algs(&snid, hnid, EVP_PKEY_id(pkey)))
  				return -1; 
  			X509_ALGOR_set0(alg2, OBJ_nid2obj(snid), V_ASN1_UNDEF, 0);
  			}
  		return 1;
  
  		case ASN1_PKEY_CTRL_CMS_RI_TYPE:
  		*(int *)arg2 = CMS_RECIPINFO_NONE;
  		return 1;
  #endif
  
  		case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
  		*(int *)arg2 = NID_sha1;
  		return 2;
  
  		default:
  		return -2;
  
  		}
  
  	}
  
  /* NB these are sorted in pkey_id order, lowest first */
  
  const EVP_PKEY_ASN1_METHOD dsa_asn1_meths[] = 
  	{
  
  		{
  		EVP_PKEY_DSA2,
  		EVP_PKEY_DSA,
  		ASN1_PKEY_ALIAS
  		},
  
  		{
  		EVP_PKEY_DSA1,
  		EVP_PKEY_DSA,
  		ASN1_PKEY_ALIAS
  		},
  
  		{
  		EVP_PKEY_DSA4,
  		EVP_PKEY_DSA,
  		ASN1_PKEY_ALIAS
  		},
  
  		{
  		EVP_PKEY_DSA3,
  		EVP_PKEY_DSA,
  		ASN1_PKEY_ALIAS
  		},
  
  		{
  		EVP_PKEY_DSA,
  		EVP_PKEY_DSA,
  		0,
  
  		"DSA",
  		"OpenSSL DSA method",
  
  		dsa_pub_decode,
  		dsa_pub_encode,
  		dsa_pub_cmp,
  		dsa_pub_print,
  
  		dsa_priv_decode,
  		dsa_priv_encode,
  		dsa_priv_print,
  
  		int_dsa_size,
  		dsa_bits,
  
  		dsa_param_decode,
  		dsa_param_encode,
  		dsa_missing_parameters,
  		dsa_copy_parameters,
  		dsa_cmp_parameters,
  		dsa_param_print,
  		dsa_sig_print,
  
  		int_dsa_free,
  		dsa_pkey_ctrl,
  		old_dsa_priv_decode,
  		old_dsa_priv_encode
  		}
  	};
  
  