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authorMatthias Schiffer <mschiffer@universe-factory.net>2013-11-05 16:29:57 +0100
committerMatthias Schiffer <mschiffer@universe-factory.net>2013-11-05 16:29:57 +0100
commitcb42b5b1fa81969e6d4056e0220374e8ded09651 (patch)
tree72b85d9cc8a551149467f770ec1752f540e3d3eb /src/crypto/cipher/aes128_ctr
parent4f9b5d66bc6b198dcf6e119fa05e891fce4e355f (diff)
downloadfastd-cb42b5b1fa81969e6d4056e0220374e8ded09651.tar
fastd-cb42b5b1fa81969e6d4056e0220374e8ded09651.zip
Generalize cipher/MAC key/IV lengths
Diffstat (limited to 'src/crypto/cipher/aes128_ctr')
-rw-r--r--src/crypto/cipher/aes128_ctr/nacl/cipher_aes128_ctr_nacl.c16
1 files changed, 14 insertions, 2 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 f63e46f..60c8743 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
@@ -37,6 +37,10 @@ static fastd_cipher_context_t* aes128_ctr_initialize(fastd_context_t *ctx UNUSED
return NULL;
}
+static size_t aes128_ctr_key_length(fastd_context_t *ctx UNUSED, const fastd_cipher_context_t *cctx UNUSED) {
+ return 16;
+}
+
static fastd_cipher_state_t* aes128_ctr_init_state(fastd_context_t *ctx, const fastd_cipher_context_t *cctx UNUSED, const uint8_t *key) {
fastd_block128_t k;
memcpy(k.b, key, sizeof(fastd_block128_t));
@@ -49,8 +53,12 @@ static fastd_cipher_state_t* aes128_ctr_init_state(fastd_context_t *ctx, const f
return state;
}
-static bool aes128_ctr_crypt(fastd_context_t *ctx UNUSED, const fastd_cipher_state_t *state, fastd_block128_t *out, const fastd_block128_t *in, size_t len, const fastd_block128_t *iv) {
- crypto_stream_aes128ctr_xor_afternm(out->b, in->b, len, iv->b, state->d.data);
+static size_t aes128_ctr_iv_length(fastd_context_t *ctx UNUSED, const fastd_cipher_state_t *state UNUSED) {
+ return 16;
+}
+
+static bool aes128_ctr_crypt(fastd_context_t *ctx UNUSED, 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.data);
return true;
}
@@ -68,7 +76,11 @@ const fastd_cipher_t fastd_cipher_aes128_ctr_nacl = {
.name = "nacl",
.initialize = aes128_ctr_initialize,
+
+ .key_length = aes128_ctr_key_length,
.init_state = aes128_ctr_init_state,
+
+ .iv_length = aes128_ctr_iv_length,
.crypt = aes128_ctr_crypt,
.free_state = aes128_ctr_free_state,