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-rw-r--r--include/rc4.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/rc4.h b/include/rc4.h
index 45b3e1e..ac34bf1 100644
--- a/include/rc4.h
+++ b/include/rc4.h
@@ -10,7 +10,7 @@ struct rc4_state
extern "C" {
#endif
-void rc4_setup( struct rc4_state *s, unsigned char *key, int length );
+void rc4_setup( struct rc4_state *s, const unsigned char *key, int length );
void rc4_crypt( struct rc4_state *s, unsigned char *data, int length );
#ifdef __cplusplus