diff options
Diffstat (limited to 'src/crypto/cipher/salsa20/nacl')
| -rw-r--r-- | src/crypto/cipher/salsa20/nacl/salsa20_nacl.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/src/crypto/cipher/salsa20/nacl/salsa20_nacl.c b/src/crypto/cipher/salsa20/nacl/salsa20_nacl.c index 03ab1d9..6179bc2 100644 --- a/src/crypto/cipher/salsa20/nacl/salsa20_nacl.c +++ b/src/crypto/cipher/salsa20/nacl/salsa20_nacl.c @@ -23,17 +23,25 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ +/** + \file + + The Salsa20 implementation from NaCl +*/ + #include "../../../../crypto.h" #include <crypto_stream_salsa20.h> +/** The cipher state */ struct fastd_cipher_state { - uint8_t key[crypto_stream_salsa20_KEYBYTES]; + uint8_t key[crypto_stream_salsa20_KEYBYTES]; /**< The encryption key */ }; +/** Initializes the cipher state */ static fastd_cipher_state_t* salsa20_init(const uint8_t *key) { fastd_cipher_state_t *state = malloc(sizeof(fastd_cipher_state_t)); memcpy(state->key, key, crypto_stream_salsa20_KEYBYTES); @@ -41,11 +49,13 @@ static fastd_cipher_state_t* salsa20_init(const uint8_t *key) { return state; } +/** XORs data with the Salsa20 cipher stream */ static bool salsa20_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_salsa20_xor(out->b, in->b, len, iv, state->key); return true; } +/** Frees the cipher state */ static void salsa20_free(fastd_cipher_state_t *state) { if (state) { secure_memzero(state, sizeof(*state)); @@ -53,6 +63,8 @@ static void salsa20_free(fastd_cipher_state_t *state) { } } + +/** The nacl salsa20 implementation */ const fastd_cipher_t fastd_cipher_salsa20_nacl = { .init = salsa20_init, .crypt = salsa20_crypt, |