text: /**********************************************************************
   *                          gost_pmeth.c                              *
   *             Copyright (c) 2005-2006 Cryptocom LTD                  *
   *         This file is distributed under the same license as OpenSSL *
   *                                                                    *
   *   Implementation of RFC 4357 (GOST R 34.10) Publick key method     *
   *       for OpenSSL                                                  *
   *          Requires OpenSSL 0.9.9 for compilation                    *
   **********************************************************************/
  #include <openssl/evp.h>
  #include <openssl/objects.h>
  #include <openssl/ec.h>
  #include <openssl/x509v3.h> /*For string_to_hex */
  #include <stdlib.h>
  #include <string.h>
  #include <ctype.h>
  #include "gost_params.h"
  #include "gost_lcl.h"
  #include "e_gost_err.h"
  /*-------init, cleanup, copy - uniform for all algs  ---------------*/
  /* Allocates new gost_pmeth_data structure and assigns it as data */
  static int pkey_gost_init(EVP_PKEY_CTX *ctx)
  	{
  	struct gost_pmeth_data *data;
  	EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx);
  	data = OPENSSL_malloc(sizeof(struct gost_pmeth_data));
  	if (!data) return 0;
  	memset(data,0,sizeof(struct gost_pmeth_data));
  	if (pkey && EVP_PKEY_get0(pkey)) 
  		{
  		switch (EVP_PKEY_base_id(pkey)) {
  		case NID_id_GostR3410_94:
  		  data->sign_param_nid = gost94_nid_by_params(EVP_PKEY_get0(pkey));
  		  break;
  		case NID_id_GostR3410_2001:
  		   data->sign_param_nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(EVP_PKEY_get0((EVP_PKEY *)pkey)));
  		break;
  		default:
  			return 0;
  		}	  
  		}
  	EVP_PKEY_CTX_set_data(ctx,data);
  	return 1;
  	}
  
  /* Copies contents of gost_pmeth_data structure */
  static int pkey_gost_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)
  	{
  	struct gost_pmeth_data *dst_data,*src_data;
  	if (!pkey_gost_init(dst))
  		{
  		return 0;
  		}
  	src_data = EVP_PKEY_CTX_get_data(src);
  	dst_data = EVP_PKEY_CTX_get_data(dst);
  	*dst_data = *src_data;
  	if (src_data -> shared_ukm) {
  		dst_data->shared_ukm=NULL;
  	}	
  	return 1;
  	}
  
  /* Frees up gost_pmeth_data structure */
  static void pkey_gost_cleanup (EVP_PKEY_CTX *ctx)
  	{
  	struct gost_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
  	if (data->shared_ukm) OPENSSL_free(data->shared_ukm);
  	OPENSSL_free(data);
  	}	
  
  /* --------------------- control functions  ------------------------------*/
  static int pkey_gost_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
  	{
  	struct gost_pmeth_data *pctx = (struct gost_pmeth_data*)EVP_PKEY_CTX_get_data(ctx);
  	switch (type)
  		{
  		case EVP_PKEY_CTRL_MD:
  		{
  		if (EVP_MD_type((const EVP_MD *)p2) != NID_id_GostR3411_94)
  			{
  			GOSTerr(GOST_F_PKEY_GOST_CTRL, GOST_R_INVALID_DIGEST_TYPE);
  			return 0;
  			}
  		pctx->md = (EVP_MD *)p2;
  		return 1;
  		}
  		break;
  
  		case EVP_PKEY_CTRL_PKCS7_ENCRYPT:
  		case EVP_PKEY_CTRL_PKCS7_DECRYPT:
  		case EVP_PKEY_CTRL_PKCS7_SIGN:
  		case EVP_PKEY_CTRL_DIGESTINIT:
  #ifndef OPENSSL_NO_CMS		
  		case EVP_PKEY_CTRL_CMS_ENCRYPT:
  		case EVP_PKEY_CTRL_CMS_DECRYPT:
  		case EVP_PKEY_CTRL_CMS_SIGN:
  #endif		
  			return 1;
  
  		case EVP_PKEY_CTRL_GOST_PARAMSET:
  			pctx->sign_param_nid = (int)p1;
  			return 1;
  		case EVP_PKEY_CTRL_SET_IV:
  			pctx->shared_ukm=OPENSSL_malloc((int)p1);
  			memcpy(pctx->shared_ukm,p2,(int) p1);
  			return 1;
  		case EVP_PKEY_CTRL_PEER_KEY:
  			if (p1 == 0 || p1 == 1) /* call from EVP_PKEY_derive_set_peer */
  				return 1;
  			if (p1 == 2)		/* TLS: peer key used? */
  				return pctx->peer_key_used;
  			if (p1 == 3)		/* TLS: peer key used! */
  				return (pctx->peer_key_used = 1);
  			return -2;
  		}
  	return -2;
  	}
  
  
  static int pkey_gost_ctrl94_str(EVP_PKEY_CTX *ctx,
  	const char *type, const char *value)
  	{
  	int param_nid=0;
  	if(!strcmp(type, param_ctrl_string))
  		{
  		if (!value)
  			{
  			return 0;
  			}
  		if (strlen(value) == 1)
  			{
  			switch(toupper((unsigned char)value[0]))
  				{
  				case 'A':
  					param_nid = NID_id_GostR3410_94_CryptoPro_A_ParamSet;
  					break;
  				case 'B':
  					param_nid = NID_id_GostR3410_94_CryptoPro_B_ParamSet;
  					break;
  				case 'C':
  					param_nid = NID_id_GostR3410_94_CryptoPro_C_ParamSet;
  					break;
  				case 'D':
  					param_nid = NID_id_GostR3410_94_CryptoPro_D_ParamSet;
  					break;
  				default:
  					return 0;
  					break;
  				}
  			}
  		else if ((strlen(value) == 2) && (toupper((unsigned char)value[0]) == 'X'))
  			{
  			switch (toupper((unsigned char)value[1]))
  				{
  				case 'A':
  					param_nid = NID_id_GostR3410_94_CryptoPro_XchA_ParamSet;
  					break;
  				case 'B':
  					param_nid = NID_id_GostR3410_94_CryptoPro_XchB_ParamSet;
  					break;
  				case 'C':
  					param_nid = NID_id_GostR3410_94_CryptoPro_XchC_ParamSet;
  					break;
  				default:
  					return 0;
  					break;
  				}
  			}
  		else
  			{
  			R3410_params *p = R3410_paramset;
  			param_nid = OBJ_txt2nid(value);
  			if (param_nid == NID_undef)
  				{
  				return 0;
  				}
  			for (;p->nid != NID_undef;p++)
  				{
  				if (p->nid == param_nid) break;
  				}
  			if (p->nid == NID_undef)
  				{
  				GOSTerr(GOST_F_PKEY_GOST_CTRL94_STR,
  					GOST_R_INVALID_PARAMSET);
  				return 0;
  				}
  			}
  
  		return pkey_gost_ctrl(ctx, EVP_PKEY_CTRL_GOST_PARAMSET,
  			param_nid, NULL);
  		}
  	return -2;
  	}
  
  static int pkey_gost_ctrl01_str(EVP_PKEY_CTX *ctx,
  	const char *type, const char *value)
  	{
  	int param_nid=0;
  	if(!strcmp(type, param_ctrl_string))
  		{
  		if (!value)
  			{
  			return 0;
  			}
  		if (strlen(value) == 1)
  			{
  			switch(toupper((unsigned char)value[0]))
  				{
  				case 'A':
  					param_nid = NID_id_GostR3410_2001_CryptoPro_A_ParamSet;
  					break;	
  				case 'B':
  					param_nid = NID_id_GostR3410_2001_CryptoPro_B_ParamSet;
  					break;
  				case 'C':
  					param_nid = NID_id_GostR3410_2001_CryptoPro_C_ParamSet;
  					break;
  				case '0':
  					param_nid = NID_id_GostR3410_2001_TestParamSet;
  					break;
  				default:
  					return 0;
  					break;
  				}
  			}
  		else if ((strlen(value) == 2) && (toupper((unsigned char)value[0]) == 'X'))
  			{
  			switch (toupper((unsigned char)value[1]))
  				{
  				case 'A':
  					param_nid = NID_id_GostR3410_2001_CryptoPro_XchA_ParamSet;
  					break;
  				case 'B':
  					param_nid = NID_id_GostR3410_2001_CryptoPro_XchB_ParamSet;
  					break;
  				default:
  					return 0;
  					break;
  				}
  			}
  		else
  			{
  			R3410_2001_params *p = R3410_2001_paramset;
  			param_nid = OBJ_txt2nid(value);
  			if (param_nid == NID_undef)
  				{
  				return 0;
  				}
  			for (;p->nid != NID_undef;p++)
  				{
  				if (p->nid == param_nid) break;
  				}
  			if (p->nid == NID_undef)
  				{
  				GOSTerr(GOST_F_PKEY_GOST_CTRL01_STR,
  					GOST_R_INVALID_PARAMSET);
  				return 0;
  				}
  			}
  
  		return pkey_gost_ctrl(ctx, EVP_PKEY_CTRL_GOST_PARAMSET,
  			param_nid, NULL);
  		}
  	return -2;
  	}
  
  /* --------------------- key generation  --------------------------------*/
  
  static int pkey_gost_paramgen_init(EVP_PKEY_CTX *ctx) {
  	return 1;
  }	
  static int pkey_gost94_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey) 
  	{
  	struct gost_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
  	DSA *dsa=NULL;
  	if (data->sign_param_nid == NID_undef)
  		{
  			GOSTerr(GOST_F_PKEY_GOST94_PARAMGEN,
  				GOST_R_NO_PARAMETERS_SET);
  			return 0;
  		}
  	dsa = DSA_new();
  	if (!fill_GOST94_params(dsa,data->sign_param_nid))
  		{
  		DSA_free(dsa);
  		return 0;
  		}
  	EVP_PKEY_assign(pkey,NID_id_GostR3410_94,dsa);
  	return 1;
  	}
  static int pkey_gost01_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
  	{
  	struct gost_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
  	EC_KEY *ec=NULL;
  
  	if (data->sign_param_nid == NID_undef)
  		{
  			GOSTerr(GOST_F_PKEY_GOST01_PARAMGEN,
  				GOST_R_NO_PARAMETERS_SET);
  			return 0;
  		}
  	if (!ec) 	
  		ec = EC_KEY_new();
  	if (!fill_GOST2001_params(ec,data->sign_param_nid))
  		{
  		EC_KEY_free(ec);
  		return 0;
  		}
  	EVP_PKEY_assign(pkey,NID_id_GostR3410_2001,ec);
  	return 1;
  	}
  
  /* Generates Gost_R3410_94_cp key */
  static int pkey_gost94cp_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
  	{
  	DSA *dsa;
  	if (!pkey_gost94_paramgen(ctx,pkey)) return 0;
  	dsa = EVP_PKEY_get0(pkey);
  	gost_sign_keygen(dsa);
  	return 1;
  	}
  
  /* Generates GOST_R3410 2001 key and assigns it using specified type */
  static int pkey_gost01cp_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
  	{
  	EC_KEY *ec;
      if (!pkey_gost01_paramgen(ctx,pkey)) return 0;
  	ec = EVP_PKEY_get0(pkey);
  	gost2001_keygen(ec);
  	return 1;
  	}
  
  
  
  /* ----------- sign callbacks --------------------------------------*/
  
  static int pkey_gost94_cp_sign(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
  	const unsigned char *tbs, size_t tbs_len)
  	{
  	DSA_SIG *unpacked_sig=NULL;
  	EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx);
  	if (!siglen) return 0;
  	if (!sig)
  		{
  		*siglen= 64; /* better to check size of pkey->pkey.dsa-q */
  		return 1;
  		}	
  	unpacked_sig = gost_do_sign(tbs,tbs_len,EVP_PKEY_get0(pkey));
  	if (!unpacked_sig)
  		{
  		return 0;
  		}
  	return pack_sign_cp(unpacked_sig,32,sig,siglen);
  	}
  
  static int pkey_gost01_cp_sign(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
  	const unsigned char *tbs, size_t tbs_len)
  	{
  	DSA_SIG *unpacked_sig=NULL;
  	EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx);
  	if (!siglen) return 0;
  	if (!sig)
  		{
  		*siglen= 64; /* better to check size of curve order*/
  		return 1;
  		}	
  	unpacked_sig = gost2001_do_sign(tbs,tbs_len,EVP_PKEY_get0(pkey));
  	if (!unpacked_sig)
  		{
  		return 0;
  		}
  	return pack_sign_cp(unpacked_sig,32,sig,siglen);
  	}
  
  /* ------------------- verify callbacks ---------------------------*/
  
  static int pkey_gost94_cp_verify(EVP_PKEY_CTX *ctx, const unsigned char *sig,
  	size_t siglen, const unsigned char *tbs, size_t tbs_len)
  	{
  	int ok = 0;
  	EVP_PKEY* pub_key = EVP_PKEY_CTX_get0_pkey(ctx);
  	DSA_SIG *s=unpack_cp_signature(sig,siglen);
  	if (!s) return 0;
  	if (pub_key) ok = gost_do_verify(tbs,tbs_len,s,EVP_PKEY_get0(pub_key));
  	DSA_SIG_free(s);
  	return ok;
  	}
  
  
  static int pkey_gost01_cp_verify(EVP_PKEY_CTX *ctx, const unsigned char *sig,
  	size_t siglen, const unsigned char *tbs, size_t tbs_len)
  	{
  	int ok = 0;
  	EVP_PKEY* pub_key = EVP_PKEY_CTX_get0_pkey(ctx);
  	DSA_SIG *s=unpack_cp_signature(sig,siglen);
  	if (!s) return 0;
  #ifdef DEBUG_SIGN	
  	fprintf(stderr,"R=");
  	BN_print_fp(stderr,s->r);
  	fprintf(stderr,"\nS=");
  	BN_print_fp(stderr,s->s);
  	fprintf(stderr,"\n");
  #endif	
  	if (pub_key) ok = gost2001_do_verify(tbs,tbs_len,s,EVP_PKEY_get0(pub_key));
  	DSA_SIG_free(s);
  	return ok;
  	}
  
  /* ------------- encrypt init -------------------------------------*/
  /* Generates ephermeral key */
  static int pkey_gost_encrypt_init(EVP_PKEY_CTX *ctx)
  	{
  	return 1;
  	}
  /* --------------- Derive init ------------------------------------*/
  static int pkey_gost_derive_init(EVP_PKEY_CTX *ctx)
  {
  	return 1;
  }
  /* -------- PKEY_METHOD for GOST MAC algorithm --------------------*/
  static int pkey_gost_mac_init(EVP_PKEY_CTX *ctx)
  	{
  	struct gost_mac_pmeth_data *data;
  	data = OPENSSL_malloc(sizeof(struct gost_mac_pmeth_data));
  	if (!data) return 0;
  	memset(data,0,sizeof(struct gost_mac_pmeth_data));
  	EVP_PKEY_CTX_set_data(ctx,data);
  	return 1;
  	}	
  static void pkey_gost_mac_cleanup (EVP_PKEY_CTX *ctx)
  	{
  	struct gost_mac_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
  	OPENSSL_free(data);
  	}	
  static int pkey_gost_mac_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)
  	{
  	struct gost_mac_pmeth_data *dst_data,*src_data;
  	if (!pkey_gost_mac_init(dst))
  		{
  		return 0;
  		}
  	src_data = EVP_PKEY_CTX_get_data(src);
  	dst_data = EVP_PKEY_CTX_get_data(dst);
  	*dst_data = *src_data;
  	return 1;
  	}
  	
  static int pkey_gost_mac_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
  	{
  	struct gost_mac_pmeth_data *data =
  (struct gost_mac_pmeth_data*)EVP_PKEY_CTX_get_data(ctx);
  
  	switch (type)
  		{
  		case EVP_PKEY_CTRL_MD:
  		{
  		if (EVP_MD_type((const EVP_MD *)p2) != NID_id_Gost28147_89_MAC)
  			{
  			GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL, GOST_R_INVALID_DIGEST_TYPE);
  			return 0;
  			}
  		data->md = (EVP_MD *)p2;
  		return 1;
  		}
  		break;
  
  		case EVP_PKEY_CTRL_PKCS7_ENCRYPT:
  		case EVP_PKEY_CTRL_PKCS7_DECRYPT:
  		case EVP_PKEY_CTRL_PKCS7_SIGN:
  			return 1;
  		case EVP_PKEY_CTRL_SET_MAC_KEY:
  			if (p1 != 32) 
  				{
  				GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL,
  					GOST_R_INVALID_MAC_KEY_LENGTH);
  				return 0;
  				}
  
  			memcpy(data->key,p2,32);
  			data->key_set = 1;
  			return 1;
  		case EVP_PKEY_CTRL_DIGESTINIT:
  			{ 
  			EVP_MD_CTX *mctx = p2;
  			void *key;
  			if (!data->key_set)
  				{ 
  				EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx);
  				if (!pkey) 
  					{
  					GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL,GOST_R_MAC_KEY_NOT_SET);
  					return 0;
  					}
  				key = EVP_PKEY_get0(pkey);
  				if (!key) 
  					{
  					GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL,GOST_R_MAC_KEY_NOT_SET);
  					return 0;
  					}
  				} else {
  				key = &(data->key);
  				}
  			return mctx->digest->md_ctrl(mctx,EVP_MD_CTRL_SET_KEY,32,key);
  			}  
  		}	
  	return -2;
  	}
  static int pkey_gost_mac_ctrl_str(EVP_PKEY_CTX *ctx,
  	const char *type, const char *value)
  	{
  	if (!strcmp(type, key_ctrl_string)) 
  		{
  		if (strlen(value)!=32) 
  			{
  			GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL_STR,
  				GOST_R_INVALID_MAC_KEY_LENGTH);
  			return 0;	
  			}
  		return pkey_gost_mac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY,
  			32,(char *)value);
  		}
  	if (!strcmp(type, hexkey_ctrl_string)) 
  		{
  			long keylen; int ret;
  			unsigned char *keybuf=string_to_hex(value,&keylen);
  			if (keylen != 32) 
  				{
  				GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL_STR,
  					GOST_R_INVALID_MAC_KEY_LENGTH);
  				OPENSSL_free(keybuf);
  				return 0;	
  				}
  			ret= pkey_gost_mac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY,
  				32,keybuf);
  			OPENSSL_free(keybuf);
  			return ret;
  	
  		}
  	return -2;
  	}	
  
  static int pkey_gost_mac_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
  	{
  		struct gost_mac_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
  		unsigned char *keydata;
  		if (!data->key_set) 
  		{
  			GOSTerr(GOST_F_PKEY_GOST_MAC_KEYGEN,GOST_R_MAC_KEY_NOT_SET);
  			return 0;
  		}
  		keydata = OPENSSL_malloc(32);
  		memcpy(keydata,data->key,32);
  		EVP_PKEY_assign(pkey, NID_id_Gost28147_89_MAC, keydata);
  		return 1;
  	}
  
  static int pkey_gost_mac_signctx_init(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx)
  	{
  	return 1;
  }
  
  static int pkey_gost_mac_signctx(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen, EVP_MD_CTX *mctx)
  	{
  		unsigned int tmpsiglen=*siglen; /* for platforms where sizeof(int)!=sizeof(size_t)*/
  		int ret;
  		if (!sig) 
  			{
  			*siglen = 4;
  			return 1;
  			}
  		ret=EVP_DigestFinal_ex(mctx,sig,&tmpsiglen);
  		*siglen = tmpsiglen;
  		return ret;
  	}
  /* ----------------------------------------------------------------*/
  int register_pmeth_gost(int id, EVP_PKEY_METHOD **pmeth,int flags)
  	{
  	*pmeth = EVP_PKEY_meth_new(id, flags);
  	if (!*pmeth) return 0;
  
  	switch (id)
  		{
  		case NID_id_GostR3410_94:
  			EVP_PKEY_meth_set_ctrl(*pmeth,pkey_gost_ctrl, pkey_gost_ctrl94_str);
  			EVP_PKEY_meth_set_keygen(*pmeth,NULL,pkey_gost94cp_keygen);
  			EVP_PKEY_meth_set_sign(*pmeth, NULL, pkey_gost94_cp_sign);
  			EVP_PKEY_meth_set_verify(*pmeth, NULL, pkey_gost94_cp_verify);
  			EVP_PKEY_meth_set_encrypt(*pmeth,
  				pkey_gost_encrypt_init, pkey_GOST94cp_encrypt);
  			EVP_PKEY_meth_set_decrypt(*pmeth, NULL, pkey_GOST94cp_decrypt);
  			EVP_PKEY_meth_set_derive(*pmeth,
  				pkey_gost_derive_init, pkey_gost94_derive);
  			EVP_PKEY_meth_set_paramgen(*pmeth, pkey_gost_paramgen_init,pkey_gost94_paramgen);	
  			break;
  		case NID_id_GostR3410_2001:
  			EVP_PKEY_meth_set_ctrl(*pmeth,pkey_gost_ctrl, pkey_gost_ctrl01_str);
  			EVP_PKEY_meth_set_sign(*pmeth, NULL, pkey_gost01_cp_sign);
  			EVP_PKEY_meth_set_verify(*pmeth, NULL, pkey_gost01_cp_verify);
  
  			EVP_PKEY_meth_set_keygen(*pmeth, NULL, pkey_gost01cp_keygen);
  
  			EVP_PKEY_meth_set_encrypt(*pmeth,
  				pkey_gost_encrypt_init, pkey_GOST01cp_encrypt);
  			EVP_PKEY_meth_set_decrypt(*pmeth, NULL, pkey_GOST01cp_decrypt);
  			EVP_PKEY_meth_set_derive(*pmeth,
  				pkey_gost_derive_init, pkey_gost2001_derive);
  			EVP_PKEY_meth_set_paramgen(*pmeth, pkey_gost_paramgen_init,pkey_gost01_paramgen);	
  			break;
  		case NID_id_Gost28147_89_MAC:
  			EVP_PKEY_meth_set_ctrl(*pmeth,pkey_gost_mac_ctrl, pkey_gost_mac_ctrl_str);
  			EVP_PKEY_meth_set_signctx(*pmeth,pkey_gost_mac_signctx_init, pkey_gost_mac_signctx);
  			EVP_PKEY_meth_set_keygen(*pmeth,NULL, pkey_gost_mac_keygen);
  			EVP_PKEY_meth_set_init(*pmeth,pkey_gost_mac_init);
  			EVP_PKEY_meth_set_cleanup(*pmeth,pkey_gost_mac_cleanup);
  			EVP_PKEY_meth_set_copy(*pmeth,pkey_gost_mac_copy);
  			return 1;
  		default: /*Unsupported method*/
  			return 0;
  		}
  	EVP_PKEY_meth_set_init(*pmeth, pkey_gost_init);
  	EVP_PKEY_meth_set_cleanup(*pmeth, pkey_gost_cleanup);
  
  	EVP_PKEY_meth_set_copy(*pmeth, pkey_gost_copy);
  	/*FIXME derive etc...*/
  	
  	return 1;
  	}
  
  