forgot the makefile and the round constant generator

[avr-crypto-lib.git] / noekeon_genrc.c

diff --git a/noekeon_genrc.c b/noekeon_genrc.c
new file mode 100644 (file)
index 0000000..cb8fac2
--- /dev/null
+++ b/noekeon_genrc.c
@@ -0,0 +1,35 @@
+/**
+ *
+ * author: Daniel Otte
+ * email:  daniel.otte@rub.de
+ * license: GPLv3
+ *
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+
+uint8_t getnextrc(uint8_t a){
+       if((a&0x80) != 0){
+               return (a<<1) ^ 0x1B;
+       } else {
+               return (a<<1);
+       }
+}
+
+#define N 32
+
+int main(void){
+       uint8_t c=0x80;
+       uint32_t i;
+       puts("\nNoekeon Round Constants:");
+       for(i=0; i<N; ++i){
+               printf(" 0x%2.2X,", c);
+               if(i%8==7){
+                       puts("");
+               }
+               c=getnextrc(c);
+       }
+       return 0;
+}
+