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crypto/modes/ccm: update api to const input buffers

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Input buffers are not modified, so can be declared const arguments.
This commit is contained in:
Gaëtan Harter 2018-11-12 18:33:02 +01:00
parent 9e6782afb4
commit c87fe94ec1
No known key found for this signature in database
GPG Key ID: 76DF6BCF1B1F883B
3 changed files with 25 additions and 17 deletions
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17
sys/crypto/modes/ccm.c
View File

@ -144,10 +144,11 @@ static inline int _fits_in_nbytes(size_t value, uint8_t num_bytes)
}
int cipher_encrypt_ccm(cipher_t* cipher, uint8_t* auth_data, uint32_t auth_data_len,
int cipher_encrypt_ccm(cipher_t* cipher,
const uint8_t* auth_data, uint32_t auth_data_len,
uint8_t mac_length, uint8_t length_encoding,
uint8_t* nonce, size_t nonce_len,
uint8_t* input, size_t input_len,
const uint8_t* nonce, size_t nonce_len,
const uint8_t* input, size_t input_len,
uint8_t* output)
{
int len = -1;
@ -207,10 +208,12 @@ int cipher_encrypt_ccm(cipher_t* cipher, uint8_t* auth_data, uint32_t auth_data_
}
int cipher_decrypt_ccm(cipher_t* cipher, uint8_t* auth_data,
uint32_t auth_data_len, uint8_t mac_length,
uint8_t length_encoding, uint8_t* nonce, size_t nonce_len,
uint8_t* input, size_t input_len, uint8_t* plain)
int cipher_decrypt_ccm(cipher_t* cipher,
const uint8_t* auth_data, uint32_t auth_data_len,
uint8_t mac_length, uint8_t length_encoding,
const uint8_t* nonce, size_t nonce_len,
const uint8_t* input, size_t input_len,
uint8_t* plain)
{
int len = -1;
uint8_t nonce_counter[16] = {0}, mac_iv[16] = {0}, mac[16] = {0},

20
sys/include/crypto/modes/ccm.h
View File

@ -57,10 +57,12 @@ extern "C" {
* @return Length of encrypted data on a successful encryption
* @return A negative error code if something went wrong
*/
int cipher_encrypt_ccm(cipher_t* cipher, uint8_t* auth_data,
uint32_t auth_data_len, uint8_t mac_length,
uint8_t length_encoding, uint8_t* nonce, size_t nonce_len,
uint8_t* input, size_t input_len, uint8_t* output);
int cipher_encrypt_ccm(cipher_t* cipher,
const uint8_t* auth_data, uint32_t auth_data_len,
uint8_t mac_length, uint8_t length_encoding,
const uint8_t* nonce, size_t nonce_len,
const uint8_t* input, size_t input_len,
uint8_t* output);
/**
@ -84,10 +86,12 @@ int cipher_encrypt_ccm(cipher_t* cipher, uint8_t* auth_data,
* @return Length of the decrypted data on a successful decryption
* @return A negative error code if something went wrong
*/
int cipher_decrypt_ccm(cipher_t* cipher, uint8_t* auth_data,
uint32_t auth_data_len, uint8_t mac_length,
uint8_t length_encoding, uint8_t* nonce, size_t nonce_len,
uint8_t* input, size_t input_len, uint8_t* output);
int cipher_decrypt_ccm(cipher_t* cipher,
const uint8_t* auth_data, uint32_t auth_data_len,
uint8_t mac_length, uint8_t length_encoding,
const uint8_t* nonce, size_t nonce_len,
const uint8_t* input, size_t input_len,
uint8_t* output);
#ifdef __cplusplus
}

5
tests/unittests/tests-crypto/tests-crypto-modes-ccm.c
View File

@ -190,8 +190,9 @@ static void test_crypto_modes_ccm_decrypt(void)
}
typedef int (*func_ccm_t)(cipher_t*, uint8_t*, uint32_t, uint8_t, uint8_t,
uint8_t*, size_t, uint8_t*, size_t, uint8_t*);
typedef int (*func_ccm_t)(cipher_t*, const uint8_t*, uint32_t,
uint8_t, uint8_t, const uint8_t*, size_t,
const uint8_t*, size_t, uint8_t*);
static int _test_ccm_len(func_ccm_t func, uint8_t len_encoding,
uint8_t *input, size_t input_len, size_t adata_len)