move EC_GROUP_get_basis_type() from ec_lib.c to ec_asn1.c

crypto/ec/ec.h

@@ -191,12 +191,6 @@ const char *EC_GROUP_get0_comment(int nid);
  * with the given index i from the internal curve list */
 int ec_group_index2nid(int i);
 
-/* EC_GROUP_get_basis_type() returns the NID of the basis type
- * used to represent the field elements (in case of a pentanomial or trinomial
- * basis the coefficient are returned in the k? arguments) */
-int EC_GROUP_get_basis_type(const EC_GROUP *, unsigned int *k1,
-	unsigned int *k2, unsigned int *k3);
-
 
 /* EC_POINT functions */
 
@@ -261,6 +255,13 @@ int EC_GROUP_precompute_mult(EC_GROUP *, BN_CTX *);
 
 
 /* ASN1 stuff */
+
+/* EC_GROUP_get_basis_type() returns the NID of the basis type
+ * used to represent the field elements (in case of a pentanomial or trinomial
+ * basis the coefficient are returned in the k? arguments) */
+int EC_GROUP_get_basis_type(const EC_GROUP *, unsigned int *k1,
+	unsigned int *k2, unsigned int *k3);
+
 #define OPENSSL_EC_NAMED_CURVE	0x001
 
 typedef struct ecpk_parameters_st ECPKPARAMETERS;

crypto/ec/ec_asn1.c

@@ -62,6 +62,48 @@
 #include <openssl/asn1t.h>
 #include <openssl/objects.h>
 
+
+int EC_GROUP_get_basis_type(const EC_GROUP *group, unsigned int *k1, 
+	unsigned int *k2, unsigned int *k3)
+	{
+	int i = 0;
+
+	if (group == NULL)
+		return 0;
+
+	if (EC_METHOD_get_field_type(EC_GROUP_method_of(group)) !=
+		NID_X9_62_characteristic_two_field)
+		/* everything else is currently not supported */
+		return 0;
+
+	while (group->poly[i] != 0)
+		i++;
+
+	if (i == 4)
+		{
+		if (k1)
+			*k1 = group->poly[3];
+		if (k2)
+			*k2 = group->poly[2];
+		if (k3)
+			*k3 = group->poly[1];
+
+		return NID_X9_62_ppBasis;
+		}
+	else if (i == 2)
+		{
+		if (k1)
+			*k1 = group->poly[1];
+
+		return NID_X9_62_tpBasis;
+		}
+	else
+		/* everything else is currently not supported */
+		return 0;
+	}
+
+
+
 /* some structures needed for the asn1 encoding */
 typedef struct x9_62_fieldid_st {
         ASN1_OBJECT *fieldType;

crypto/ec/ec_lcl.h

@@ -89,6 +89,11 @@
 #include <openssl/ec.h>
 
 
+/* internal function: ec_group_index2nid() returns the NID of curve
+ * with the given index i from the internal curve list */
+int ec_group_index2nid(int i);
+
+
 /* Structure details are not part of the exported interface,
  * so all this may change in future versions. */
 

crypto/ec/ec_lib.c

@@ -537,45 +537,6 @@ void EC_GROUP_clear_free_extra_data(EC_GROUP *group)
 	}
 
 
-int EC_GROUP_get_basis_type(const EC_GROUP *group, unsigned int *k1, 
-	unsigned int *k2, unsigned int *k3)
-	{
-	int i = 0;
-
-	if (group == NULL)
-		return 0;
-
-	if (EC_METHOD_get_field_type(EC_GROUP_method_of(group)) !=
-		NID_X9_62_characteristic_two_field)
-		/* everything else is currently not supported */
-		return 0;
-
-	while (group->poly[i] != 0)
-		i++;
-
-	if (i == 4)
-		{
-		if (k1)
-			*k1 = group->poly[3];
-		if (k2)
-			*k2 = group->poly[2];
-		if (k3)
-			*k3 = group->poly[1];
-
-		return NID_X9_62_ppBasis;
-		}
-	else if (i == 2)
-		{
-		if (k1)
-			*k1 = group->poly[1];
-
-		return NID_X9_62_tpBasis;
-		}
-	else
-		/* everything else is currently not supported */
-		return 0;
-	}
-
 /* functions for EC_POINT objects */
 
 EC_POINT *EC_POINT_new(const EC_GROUP *group)