diff --git a/include/crypto.h b/include/crypto.h
index 7ba5e8a..3155400 100644
--- a/include/crypto.h
+++ b/include/crypto.h
@@ -26,6 +26,8 @@ extern "C" {
 //MACROS
 #define WHY2_CHECKSUM_SEGMENT_SIZE 32 //SEGMENT SIZE FOR CALCULATING SUM
 #define WHY2_CHECKSUM_PRIME 11 //PRIME NUMBER FOR ROTATION
+#define WHY2_SUM_BASE_PRIME 31 //PRIME FOR SUM BASE
+#define WHY2_SUM_MOD_PRIME 4294967295UL //PRIME FOR SUM MODULUS
 
 //FUNCTIONS
 unsigned long why2_sum_segment(char *input); //CALCULATE SUM++ FOR input; USED FOR PADDING SEED