added generic implementation helpers for private_key_t.equals/belongs_to, public_key_t.equals

src/libstrongswan/credentials/keys/public_key.h

@@ -168,6 +168,15 @@ struct public_key_t {
 	void (*destroy)(public_key_t *this);
 };
 
+/**
+ * Generic public key equals() implementation, usable by implementors.
+ *
+ * @param this			first key to compare
+ * @param other			second key to compare
+ * @return				TRUE if this is equal to other
+ */
+bool public_key_equals(public_key_t *this, public_key_t *other);
+
 /**
  * Conversion of ASN.1 signature or hash OID to signature scheme.
  *