* aes.h (aes_encrypt, aes_decrypt): Declare ctx argument as const.

Also updated implementation.
* blowfish.h (blowfish_encrypt, blowfish_decrypt): Likewise.
* cast128.h (cast128_encrypt, cast128_decrypt): Likewise.
* serpent.h (serpent_encrypt, serpent_decrypt): Likewise.
* twofish.h (twofish_encrypt, twofish_decrypt): Likewise.

Rev: nettle/ChangeLog:1.91
Rev: nettle/aes-decrypt.c:1.2
Rev: nettle/aes-encrypt.c:1.2
Rev: nettle/aes.h:1.2
Rev: nettle/blowfish.c:1.3
Rev: nettle/blowfish.h:1.3
Rev: nettle/cast128.c:1.2
Rev: nettle/cast128.h:1.2
Rev: nettle/serpent.c:1.2
Rev: nettle/serpent.h:1.2
Rev: nettle/twofish.c:1.2
Rev: nettle/twofish.h:1.2

1 files changed, 6 insertions, 6 deletions

diff --git a/twofish.c b/twofish.c
index c7d05a13..0e519eab 100644
--- a/twofish.c
+++ b/twofish.c
@@ -333,13 +333,13 @@ twofish_set_key(struct twofish_ctx *context,
  */
 
 void
-twofish_encrypt(struct twofish_ctx *context,
+twofish_encrypt(const struct twofish_ctx *context,
 		unsigned length,
 		uint8_t *ciphertext,
 		const uint8_t *plaintext)
 {
-  uint32_t * keys        = context->keys;
-  uint32_t (*s_box)[256] = context->s_box;
+  const uint32_t * keys        = context->keys;
+  const uint32_t (*s_box)[256] = context->s_box;
 
   assert( !(length % TWOFISH_BLOCK_SIZE) );
   for ( ; length; length -= TWOFISH_BLOCK_SIZE)
@@ -403,14 +403,14 @@ twofish_encrypt(struct twofish_ctx *context,
  */
 
 void
-twofish_decrypt(struct twofish_ctx *context,
+twofish_decrypt(const struct twofish_ctx *context,
 		unsigned length,
 		uint8_t *plaintext,
 		const uint8_t *ciphertext)
 
 {
-  uint32_t *keys  = context->keys;
-  uint32_t (*s_box)[256] = context->s_box;
+  const uint32_t *keys  = context->keys;
+  const uint32_t (*s_box)[256] = context->s_box;
 
   assert( !(length % TWOFISH_BLOCK_SIZE) );
   for ( ; length; length -= TWOFISH_BLOCK_SIZE)