Constify crypto/cast.

CHANGES

@@ -39,6 +39,10 @@
 
  Changes between 0.9.8m (?) and 1.0.0  [xx XXX xxxx]
 
+  *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
+     change when encrypting or decrypting.
+     [Bodo Moeller]
+
   *) Add load_crls() function to apps tidying load_certs() too. Add option
      to verify utility to allow additional CRLs to be included.
      [Steve Henson]

crypto/cast/c_cfb64.c

@@ -65,7 +65,7 @@
  */
 
 void CAST_cfb64_encrypt(const unsigned char *in, unsigned char *out,
-			long length, CAST_KEY *schedule, unsigned char *ivec,
+			long length, const CAST_KEY *schedule, unsigned char *ivec,
 			int *num, int enc)
 	{
 	register CAST_LONG v0,v1,t;
@@ -119,4 +119,3 @@ void CAST_cfb64_encrypt(const unsigned char *in, unsigned char *out,
 	v0=v1=ti[0]=ti[1]=t=c=cc=0;
 	*num=n;
 	}
-

crypto/cast/c_ecb.c

@@ -63,7 +63,7 @@
 const char CAST_version[]="CAST" OPENSSL_VERSION_PTEXT;
 
 void CAST_ecb_encrypt(const unsigned char *in, unsigned char *out,
-		      CAST_KEY *ks, int enc)
+		      const CAST_KEY *ks, int enc)
 	{
 	CAST_LONG l,d[2];
 
@@ -77,4 +77,3 @@ void CAST_ecb_encrypt(const unsigned char *in, unsigned char *out,
 	l=d[1]; l2n(l,out);
 	l=d[0]=d[1]=0;
 	}
-

crypto/cast/c_enc.c

@@ -59,7 +59,7 @@
 #include <openssl/cast.h>
 #include "cast_lcl.h"
 
-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;
 
@@ -91,7 +91,7 @@ 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;
 
@@ -124,7 +124,7 @@ void CAST_decrypt(CAST_LONG *data, CAST_KEY *key)
 	}
 
 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;
@@ -204,4 +204,3 @@ 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;
 	}
-

crypto/cast/c_ofb64.c

@@ -64,7 +64,7 @@
  * 64bit block we have used is contained in *num;
  */
 void CAST_ofb64_encrypt(const unsigned char *in, unsigned char *out,
-			long length, CAST_KEY *schedule, unsigned char *ivec,
+			long length, const CAST_KEY *schedule, unsigned char *ivec,
 			int *num)
 	{
 	register CAST_LONG v0,v1,t;
@@ -108,4 +108,3 @@ void CAST_ofb64_encrypt(const unsigned char *in, unsigned char *out,
 	t=v0=v1=ti[0]=ti[1]=0;
 	*num=n;
 	}
-

crypto/cast/cast.h

@@ -85,17 +85,17 @@ typedef struct cast_key_st
 
  
 void CAST_set_key(CAST_KEY *key, int len, const unsigned char *data);
-void CAST_ecb_encrypt(const unsigned char *in,unsigned char *out,CAST_KEY *key,
+void CAST_ecb_encrypt(const unsigned char *in, unsigned char *out, const CAST_KEY *key,
 		      int enc);
-void CAST_encrypt(CAST_LONG *data,CAST_KEY *key);
+void CAST_encrypt(CAST_LONG *data, const CAST_KEY *key);
-void CAST_decrypt(CAST_LONG *data,CAST_KEY *key);
+void CAST_decrypt(CAST_LONG *data, const CAST_KEY *key);
 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);
 void CAST_cfb64_encrypt(const unsigned char *in, unsigned char *out,
-			long length, CAST_KEY *schedule, unsigned char *ivec,
+			long length, const CAST_KEY *schedule, unsigned char *ivec,
 			int *num, int enc);
 void CAST_ofb64_encrypt(const unsigned char *in, unsigned char *out, 
-			long length, CAST_KEY *schedule, unsigned char *ivec,
+			long length, const CAST_KEY *schedule, unsigned char *ivec,
 			int *num);
 
 #ifdef  __cplusplus