Implement dispatcher for EC_GROUP and EC_POINT method functions.

Initial EC_GROUP_new_curve_GFp implementation.

1 files changed, 24 insertions, 1 deletions

diff --git a/crypto/ec/ec_cvt.c b/crypto/ec/ec_cvt.c
index be06d3d92f..361dcc3992 100644
--- a/crypto/ec/ec_cvt.c
+++ b/crypto/ec/ec_cvt.c
@@ -1,4 +1,3 @@
-/* TODO */
 /* crypto/ec/ec_cvt.c */
 /* ====================================================================
  * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
@@ -55,3 +54,27 @@
  */
 
 #include "ec_lcl.h"
+
+
+EC_GROUP *EC_GROUP_new_curve_GFp(const BIGNUM *p, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx)
+	{
+	const EC_METHOD *meth;
+	EC_GROUP *ret;
+	
+	/* Finally, this will use EC_GFp_nist_method if 'p' is a special
+	 * prime with optimized modular arithmetics (for NIST curves)
+	 * and EC_GFp_mont_method or EC_GFp_recp_method otherwise. */
+	meth = EC_GFp_simple_method();
+	
+	ret = EC_GROUP_new(meth);
+	if (ret == NULL)
+		return NULL;
+
+	if (!EC_GROUP_set_curve_GFp(ret, p, a, b, ctx))
+		{
+		EC_GROUP_clear_free(ret);
+		return NULL;
+		}
+
+	return ret;
+	}