-threefish512_rc0: .byte 0x5a, 0x60, 0x42, 0x32, 0x41, 0x59, 0x4b, 0x41
-threefish512_rc1: .byte 0x4a, 0x24, 0x2a, 0x14, 0x61, 0x33, 0x32, 0x63
-threefish512_rc2: .byte 0x62, 0x53, 0x29, 0x72, 0x10, 0x51, 0x13, 0x59
-threefish512_rc3: .byte 0x7b, 0x49, 0x33, 0x19, 0x52, 0x2a, 0x11, 0x43
-
+/* old round constants
+threefish512_rc0: .byte 0x5a, 0x60, 0x42, 0x32, 0x41, 0x59, 0x4b, 0x41
+threefish512_rc1: .byte 0x4a, 0x24, 0x2a, 0x14, 0x61, 0x33, 0x32, 0x63
+threefish512_rc2: .byte 0x62, 0x53, 0x29, 0x72, 0x10, 0x51, 0x13, 0x59
+threefish512_rc3: .byte 0x7b, 0x49, 0x33, 0x19, 0x52, 0x2a, 0x11, 0x43
+*/
+threefish512_rc0: .byte 0x6a, 0x41, 0x21, 0x54, 0x59, 0x2b, 0x31, 0x10
+threefish512_rc1: .byte 0x44, 0x33, 0x61, 0x11, 0x4a, 0x62, 0x4b, 0x43
+threefish512_rc2: .byte 0x23, 0x2a, 0x44, 0x7a, 0x42, 0x12, 0x59, 0x70
+threefish512_rc3: .byte 0x5b, 0x52, 0x59, 0x70, 0x30, 0x21, 0x53, 0x3a