From 4f6fadbdc7c414a2037510de2e3cdde36883470f Mon Sep 17 00:00:00 2001
From: Vincent Dupont <vincent@otakeys.com>
Date: Tue, 27 Jun 2017 18:58:33 +0200
Subject: [PATCH] crypto/cbc: constify input buffers
---
sys/crypto/modes/cbc.c | 7 ++++---
sys/include/crypto/modes/cbc.h | 4 ++--
2 files changed, 6 insertions(+), 5 deletions(-)
diff --git a/sys/crypto/modes/cbc.c b/sys/crypto/modes/cbc.c
index b5ffdeb845..21e193569d 100644
--- a/sys/crypto/modes/cbc.c
+++ b/sys/crypto/modes/cbc.c
@@ -23,7 +23,7 @@
#include "crypto/modes/cbc.h"
int cipher_encrypt_cbc(cipher_t* cipher, uint8_t iv[16],
- uint8_t* input, size_t length, uint8_t* output)
+ const uint8_t* input, size_t length, uint8_t* output)
{
size_t offset = 0;
uint8_t block_size, input_block[CIPHER_MAX_BLOCK_SIZE] = {0},
@@ -55,10 +55,11 @@ int cipher_encrypt_cbc(cipher_t* cipher, uint8_t iv[16],
int cipher_decrypt_cbc(cipher_t* cipher, uint8_t iv[16],
- uint8_t* input, size_t length, uint8_t* output)
+ const uint8_t* input, size_t length, uint8_t* output)
{
size_t offset = 0;
- uint8_t* input_block, *input_block_last, block_size;
+ const uint8_t *input_block, *input_block_last;
+ uint8_t block_size;
block_size = cipher_get_block_size(cipher);
diff --git a/sys/include/crypto/modes/cbc.h b/sys/include/crypto/modes/cbc.h
index 022bfa20f1..c09a60ff37 100644
--- a/sys/include/crypto/modes/cbc.h
+++ b/sys/include/crypto/modes/cbc.h
@@ -37,7 +37,7 @@ extern "C" {
* @param output pointer to allocated memory for encrypted data. It has to
* be of size data_len + BLOCK_SIZE - data_len % BLOCK_SIZE.
*/
-int cipher_encrypt_cbc(cipher_t* cipher, uint8_t iv[16], uint8_t* input,
+int cipher_encrypt_cbc(cipher_t* cipher, uint8_t iv[16], const uint8_t* input,
size_t input_len, uint8_t* output);
@@ -51,7 +51,7 @@ int cipher_encrypt_cbc(cipher_t* cipher, uint8_t iv[16], uint8_t* input,
* @param output pointer to allocated memory for plaintext data. It has to
* be of size input_len.
*/
-int cipher_decrypt_cbc(cipher_t* cipher, uint8_t iv[16], uint8_t* input,
+int cipher_decrypt_cbc(cipher_t* cipher, uint8_t iv[16], const uint8_t* input,
size_t input_len, uint8_t* output);
#ifdef __cplusplus
--
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