1 files changed, 7 insertions, 6 deletions

diff --git a/src/lib/libcrypto/cast/c_enc.c b/src/lib/libcrypto/cast/c_enc.c
index e80f65b698..2ae54f5cfb 100644
--- a/src/lib/libcrypto/cast/c_enc.c
+++ b/src/lib/libcrypto/cast/c_enc.c
@@ -60,9 +60,10 @@
 #include "cast_lcl.h"
 
 #ifndef OPENBSD_CAST_ASM
-void CAST_encrypt(CAST_LONG *data, CAST_KEY *key)
+void CAST_encrypt(CAST_LONG *data, const CAST_KEY *key)
         {
-        register CAST_LONG l,r,*k,t;
+        register CAST_LONG l,r,t;
+        const register CAST_LONG *k;
 
         k= &(key->data[0]);
         l=data[0];
@@ -92,9 +93,10 @@ void CAST_encrypt(CAST_LONG *data, CAST_KEY *key)
         data[0]=r&0xffffffffL;
         }
 
-void CAST_decrypt(CAST_LONG *data, CAST_KEY *key)
+void CAST_decrypt(CAST_LONG *data, const CAST_KEY *key)
         {
-        register CAST_LONG l,r,*k,t;
+        register CAST_LONG l,r,t;
+        const register CAST_LONG *k;
 
         k= &(key->data[0]);
         l=data[0];
@@ -126,7 +128,7 @@ void CAST_decrypt(CAST_LONG *data, CAST_KEY *key)
 #endif
 
 void CAST_cbc_encrypt(const unsigned char *in, unsigned char *out, long length,
-             CAST_KEY *ks, unsigned char *iv, int enc)
+             const CAST_KEY *ks, unsigned char *iv, int enc)
         {
         register CAST_LONG tin0,tin1;
         register CAST_LONG tout0,tout1,xor0,xor1;
@@ -206,4 +208,3 @@ void CAST_cbc_encrypt(const unsigned char *in, unsigned char *out, long length,
         tin0=tin1=tout0=tout1=xor0=xor1=0;
         tin[0]=tin[1]=0;
         }
-