ajout crypto

crypto/TP2/spn.h

@@ -0,0 +1,17 @@
+#ifndef _SPN_H
+#define _SPN_H
+
+#include <stdint.h>
+#include <stdio.h>
+
+unsigned char do_perm(unsigned char w, unsigned char perm[8]);
+unsigned char do_subst(unsigned char w, unsigned char subst[16]);
+unsigned char encrypt(unsigned char w, unsigned short key, unsigned char perm[8], unsigned char subst[16]);
+unsigned char decrypt(unsigned char w, unsigned short key, unsigned char perm[8], unsigned char subst[16]);
+
+// Ajout des déclarations des fonctions de lecture
+void read_key(const char *filename, unsigned short *key);
+void read_subst(const char *filename, unsigned char subst[16]);
+void read_perm(const char *filename, unsigned char perm[8]);
+
+#endif