Submitted by: "Victor B. Wagner" <vitus@cryptocom.ru>

Reviewed by: steve@openssl.org

Update ccgost engine to support parameter files.

CHANGES

@@ -4,6 +4,9 @@
 
  Changes between 0.9.8j and 0.9.9  [xx XXX xxxx]
 
+  *) Update Gost ENGINE to support parameter files.
+     [Victor B. Wagner <vitus@cryptocom.ru>]
+
   *) Support GeneralizedTime in ca utility. 
      [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
 

engines/ccgost/README.gost

@@ -80,9 +80,7 @@ And section which describes configuration of the engine should contain
 Where engine_id parameter specifies name of engine (should be "gost").
 dynamic_path is a location of the loadable shared library implementing the
 engine. If the engine is compiled statically or is located in the OpenSSL
-engines directory, this line can be omitted. But as of October 2007 there is
+engines directory, this line can be omitted. 
-some bug in OpenSSL engine initialization code which prevents engine from
-correct initialization if it is loaded without explicit dynamic_path.
 default_algorithms parameter specifies that all algorithms, provided by
 engine, should be used.
 
@@ -119,7 +117,21 @@ USAGE WITH COMMAND LINE openssl UTILITY
 There are no algorithm-specific things with generation of certificate
 request once you have a private key.
 
-2. S/MIME operations
+2. Generation of certificate request along with private/public keypar
+
+   openssl req -newkey gost2001 -pkeyopt paramset:A
+
+   Syntax of -pkeyopt parameter is identical with genpkey command.
+
+   You can also use oldstyle syntax -newkey gost2001:paramfile, but in
+   this case you should create parameter file first. 
+
+   It can be created with
+
+   openssl genpkey -genparam -algorithm gost2001 -pkeyopt paramset:A\
+      -out paramfile.
+
+3. S/MIME operations
 
 If you want to send encrypted mail using GOST algorithms, don't forget
 to specify -gost89 as encryption algorithm for OpenSSL smime command.
@@ -127,7 +139,7 @@ While OpenSSL is clever enough to find out that GOST R 34.11-94 digest
 must be used for digital signing with GOST private key, it have no way
 to derive symmetric encryption algorithm from key exchange keys.
 
-3. TLS operations
+4. TLS operations
 
 OpenSSL supports all four ciphersuites defined in the IETF draft.
 Once you've loaded GOST key and certificate into your TLS server,
@@ -154,7 +166,7 @@ keys would be supported and clients can negotiate ones they wish.
 This allows creation of TLS servers which use GOST ciphersuites for
 Russian clients and RSA/DSA ciphersuites for foreign clients.
 
-4. Calculation of digests and symmetric encryption
+5. Calculation of digests and symmetric encryption
  OpenSSL provides specific commands (like sha1, aes etc) for calculation
  of digests and symmetric encryption. Since such commands cannot be
  added dynamically, no such commands are provided for GOST algorithms.
@@ -192,7 +204,7 @@ Russian clients and RSA/DSA ciphersuites for foreign clients.
  openssl enc -gost89-cnt -out encrypted-file -in plain-text-file -k <passphrase>
 
 
-5. Encrypting private keys and PKCS12
+6. Encrypting private keys and PKCS12
 
 To produce PKCS12 files compatible with MagPro CSP, you need to use
 GOST algorithm for encryption of PKCS12 file and also GOST R 34.11-94
@@ -201,6 +213,14 @@ hash to derive key from password.
 openssl pksc12 -export -inkey gost.pem -in gost_cert.pem -keypbe gost89\
    -certpbe gost89 -macalg md_gost94
  
+7. Testing speed of symmetric ciphers.
+   
+To test performance of GOST symmetric ciphers you should use -evp switch
+of the openssl speed command. Engine-provided ciphers couldn't be
+accessed by cipher-specific functions, only via generic evp interface
+
+ openssl speed -evp gost89
+ openssl speed -evp gost89-cnt
 
 
 PROGRAMMING INTERFACES DETAILS

engines/ccgost/e_gost_err.c

@@ -1,6 +1,6 @@
 /* e_gost_err.c */
 /* ====================================================================
- * Copyright (c) 1999-2007 The OpenSSL Project.  All rights reserved.
+ * Copyright (c) 1999-2008 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
@@ -92,10 +92,12 @@ static ERR_STRING_DATA GOST_str_functs[]=
 {ERR_FUNC(GOST_F_PKEY_GOST01CP_DECRYPT),	"PKEY_GOST01CP_DECRYPT"},
 {ERR_FUNC(GOST_F_PKEY_GOST01CP_ENCRYPT),	"PKEY_GOST01CP_ENCRYPT"},
 {ERR_FUNC(GOST_F_PKEY_GOST01CP_KEYGEN),	"PKEY_GOST01CP_KEYGEN"},
+{ERR_FUNC(GOST_F_PKEY_GOST01_PARAMGEN),	"PKEY_GOST01_PARAMGEN"},
 {ERR_FUNC(GOST_F_PKEY_GOST2001_DERIVE),	"PKEY_GOST2001_DERIVE"},
 {ERR_FUNC(GOST_F_PKEY_GOST94CP_DECRYPT),	"PKEY_GOST94CP_DECRYPT"},
 {ERR_FUNC(GOST_F_PKEY_GOST94CP_ENCRYPT),	"PKEY_GOST94CP_ENCRYPT"},
 {ERR_FUNC(GOST_F_PKEY_GOST94CP_KEYGEN),	"PKEY_GOST94CP_KEYGEN"},
+{ERR_FUNC(GOST_F_PKEY_GOST94_PARAMGEN),	"PKEY_GOST94_PARAMGEN"},
 {ERR_FUNC(GOST_F_PKEY_GOST_CTRL),	"PKEY_GOST_CTRL"},
 {ERR_FUNC(GOST_F_PKEY_GOST_CTRL01_STR),	"PKEY_GOST_CTRL01_STR"},
 {ERR_FUNC(GOST_F_PKEY_GOST_CTRL94_STR),	"PKEY_GOST_CTRL94_STR"},

engines/ccgost/e_gost_err.h

@@ -93,10 +93,12 @@ void ERR_GOST_error(int function, int reason, char *file, int line);
 #define GOST_F_PKEY_GOST01CP_DECRYPT			 118
 #define GOST_F_PKEY_GOST01CP_ENCRYPT			 119
 #define GOST_F_PKEY_GOST01CP_KEYGEN			 120
+#define GOST_F_PKEY_GOST01_PARAMGEN			 138
 #define GOST_F_PKEY_GOST2001_DERIVE			 121
 #define GOST_F_PKEY_GOST94CP_DECRYPT			 122
 #define GOST_F_PKEY_GOST94CP_ENCRYPT			 123
 #define GOST_F_PKEY_GOST94CP_KEYGEN			 124
+#define GOST_F_PKEY_GOST94_PARAMGEN			 139
 #define GOST_F_PKEY_GOST_CTRL				 125
 #define GOST_F_PKEY_GOST_CTRL01_STR			 126
 #define GOST_F_PKEY_GOST_CTRL94_STR			 127

engines/ccgost/gost_ameth.c

@@ -806,6 +806,59 @@ static int mac_ctrl_gost(EVP_PKEY *pkey, int op, long arg1, void *arg2)
 		}
 	return -2;
 }	
+
+int gost94_param_encode(const EVP_PKEY *pkey, unsigned char **pder) 
+{
+   int nid=gost94_nid_by_params(EVP_PKEY_get0((EVP_PKEY *)pkey));
+   return i2d_ASN1_OBJECT(OBJ_nid2obj(nid),pder);
+}
+int gost2001_param_encode(const EVP_PKEY *pkey, unsigned char **pder) 
+{
+   int nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(EVP_PKEY_get0((EVP_PKEY *)pkey)));
+   return i2d_ASN1_OBJECT(OBJ_nid2obj(nid),pder);
+}
+
+int gost94_param_decode(EVP_PKEY *pkey, const unsigned char **pder, int derlen)
+{
+	ASN1_OBJECT *obj=NULL;
+	DSA *dsa = EVP_PKEY_get0(pkey);
+	int nid;
+	if (d2i_ASN1_OBJECT(&obj,pder,derlen)==NULL) {
+		return 0;
+	}
+	nid = OBJ_obj2nid(obj);
+	ASN1_OBJECT_free(obj);
+	if (!dsa) 
+		{
+		dsa=DSA_new();
+		if (!EVP_PKEY_assign(pkey,NID_id_GostR3410_94,dsa)) return 0;
+		}
+	if (!fill_GOST94_params(dsa,nid)) return 0;
+	return 1;
+}	
+
+int gost2001_param_decode(EVP_PKEY *pkey, const unsigned char **pder, int derlen) {
+	ASN1_OBJECT *obj=NULL;
+	int nid;
+	EC_KEY *ec = EVP_PKEY_get0(pkey);
+	if (d2i_ASN1_OBJECT(&obj,pder,derlen)==NULL) {
+		return 0;
+	}
+	nid = OBJ_obj2nid(obj);
+	ASN1_OBJECT_free(obj);
+	if (!ec) 
+		{
+		ec = EC_KEY_new();
+		if (!EVP_PKEY_assign(pkey,NID_id_GostR3410_2001,ec)) return 0;
+		}	
+	if (!fill_GOST2001_params(ec, nid)) return 0;
+	return 1;
+}	
+
+
+
+
+
 /* ----------------------------------------------------------------------*/
 int register_ameth_gost (int nid, EVP_PKEY_ASN1_METHOD **ameth, const char* pemstr, const char* info) 
 	{
@@ -820,7 +873,8 @@ int register_ameth_gost (int nid, EVP_PKEY_ASN1_METHOD **ameth, const char* pems
 				priv_decode_gost, priv_encode_gost, 
 				priv_print_gost94);
 
-			EVP_PKEY_asn1_set_param (*ameth, 0, 0,
+			EVP_PKEY_asn1_set_param (*ameth, 
+				gost94_param_decode, gost94_param_encode,
 				param_missing_gost94, param_copy_gost94, 
 				param_cmp_gost94,param_print_gost94 );
 			EVP_PKEY_asn1_set_public (*ameth,
@@ -836,7 +890,8 @@ int register_ameth_gost (int nid, EVP_PKEY_ASN1_METHOD **ameth, const char* pems
 				priv_decode_gost, priv_encode_gost, 
 				priv_print_gost01);
 
-			EVP_PKEY_asn1_set_param (*ameth, 0, 0,
+			EVP_PKEY_asn1_set_param (*ameth, 
+				gost2001_param_decode, gost2001_param_encode,
 				param_missing_gost01, param_copy_gost01, 
 				param_cmp_gost01, param_print_gost01);
 			EVP_PKEY_asn1_set_public (*ameth,

engines/ccgost/gost_pmeth.c

@@ -22,9 +22,23 @@
 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;
 	}
@@ -239,15 +253,16 @@ static int pkey_gost_ctrl01_str(EVP_PKEY_CTX *ctx,
 
 /* --------------------- key generation  --------------------------------*/
 
-
+static int pkey_gost_paramgen_init(EVP_PKEY_CTX *ctx) {
-/* Generates Gost_R3410_94_cp key */
+	return 1;
-static int pkey_gost94cp_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
+}	
+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_GOST94CP_KEYGEN,
+			GOSTerr(GOST_F_PKEY_GOST94_PARAMGEN,
 				GOST_R_NO_PARAMETERS_SET);
 			return 0;
 		}
@@ -257,34 +272,51 @@ static int pkey_gost94cp_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
 		DSA_free(dsa);
 		return 0;
 		}
-	gost_sign_keygen(dsa);
 	EVP_PKEY_assign(pkey,NID_id_GostR3410_94,dsa);
 	return 1;
 	}
-
+static int pkey_gost01_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
-/* Generates GOST_R3410 2001 key and assigns it using specified type */
-static int pkey_gost01cp_keygen(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_GOST01CP_KEYGEN,
+			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;
 		}
-	gost2001_keygen(ec);
-
 	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 --------------------------------------*/
@@ -544,6 +576,7 @@ int register_pmeth_gost(int id, EVP_PKEY_METHOD **pmeth,int flags)
 			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);
@@ -557,6 +590,7 @@ int register_pmeth_gost(int id, EVP_PKEY_METHOD **pmeth,int flags)
 			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);