diff options
Diffstat (limited to 'src/crypto/cipher/aes128_ctr/nacl/cipher_aes128_ctr_nacl.c')
| -rw-r--r-- | src/crypto/cipher/aes128_ctr/nacl/cipher_aes128_ctr_nacl.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/src/crypto/cipher/aes128_ctr/nacl/cipher_aes128_ctr_nacl.c b/src/crypto/cipher/aes128_ctr/nacl/cipher_aes128_ctr_nacl.c index 793b724..797572c 100644 --- a/src/crypto/cipher/aes128_ctr/nacl/cipher_aes128_ctr_nacl.c +++ b/src/crypto/cipher/aes128_ctr/nacl/cipher_aes128_ctr_nacl.c @@ -23,17 +23,25 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ +/** + \file + + The aes128-ctr implementation from NaCl +*/ + #include "../../../../crypto.h" #include <crypto_stream_aes128ctr.h> +/** The cipher state */ struct __attribute__((aligned(16))) fastd_cipher_state { - uint8_t d[crypto_stream_aes128ctr_BEFORENMBYTES] __attribute__((aligned(16))); + uint8_t d[crypto_stream_aes128ctr_BEFORENMBYTES] __attribute__((aligned(16))); /**< The unpacked AES key */ }; +/** Initializes the cipher state */ static fastd_cipher_state_t* aes128_ctr_init(const uint8_t *key) { fastd_block128_t k; memcpy(k.b, key, sizeof(fastd_block128_t)); @@ -47,11 +55,13 @@ static fastd_cipher_state_t* aes128_ctr_init(const uint8_t *key) { return state; } +/** XORs data with the aes128-ctr cipher stream */ static bool aes128_ctr_crypt(const fastd_cipher_state_t *state, fastd_block128_t *out, const fastd_block128_t *in, size_t len, const uint8_t *iv) { crypto_stream_aes128ctr_xor_afternm(out->b, in->b, len, iv, state->d); return true; } +/** Frees the cipher state */ static void aes128_ctr_free(fastd_cipher_state_t *state) { if (state) { secure_memzero(state, sizeof(*state)); @@ -59,6 +69,8 @@ static void aes128_ctr_free(fastd_cipher_state_t *state) { } } + +/** The nacl aes128-ctr implementation */ const fastd_cipher_t fastd_cipher_aes128_ctr_nacl = { .init = aes128_ctr_init, .crypt = aes128_ctr_crypt, |