- Added reset functionality for HMAC context. Speed-up for some use-cases.

include/polarssl/md4.h

@@ -111,6 +111,13 @@ void md4_hmac_update( md4_context *ctx, const unsigned char *input, int ilen );
  */
 void md4_hmac_finish( md4_context *ctx, unsigned char output[16] );
 
+/**
+ * \brief          MD4 HMAC context reset
+ *
+ * \param ctx      HMAC context to be reset
+ */
+void md4_hmac_reset( md4_context *ctx );
+
 /**
  * \brief          Output = HMAC-MD4( hmac key, input buffer )
  *