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-rw-r--r--src/method_aes128_gcm.c122
1 files changed, 61 insertions, 61 deletions
diff --git a/src/method_aes128_gcm.c b/src/method_aes128_gcm.c
index f21904e..ea6b81f 100644
--- a/src/method_aes128_gcm.c
+++ b/src/method_aes128_gcm.c
@@ -31,7 +31,7 @@
#define KEYBYTES 16
#define NONCEBYTES 7
-struct _fastd_method_session_state {
+struct fastd_method_session_state {
struct timespec valid_till;
struct timespec refresh_after;
@@ -41,8 +41,8 @@ struct _fastd_method_session_state {
struct timespec receive_last;
uint64_t receive_reorder_seen;
- fastd_crypto_aes128ctr_state *cstate_aes128ctr;
- fastd_crypto_ghash_state *cstate_ghash;
+ fastd_crypto_aes128ctr_state_t *cstate_aes128ctr;
+ fastd_crypto_ghash_state_t *cstate_ghash;
};
@@ -75,35 +75,35 @@ static inline bool is_nonce_valid(const uint8_t nonce[NONCEBYTES], const uint8_t
return true;
}
-static size_t method_max_packet_size(fastd_context *ctx) {
- return (fastd_max_packet_size(ctx) + NONCEBYTES + sizeof(fastd_block128));
+static size_t method_max_packet_size(fastd_context_t *ctx) {
+ return (fastd_max_packet_size(ctx) + NONCEBYTES + sizeof(fastd_block128_t));
}
-static size_t method_min_encrypt_head_space(fastd_context *ctx) {
- return sizeof(fastd_block128);
+static size_t method_min_encrypt_head_space(fastd_context_t *ctx) {
+ return sizeof(fastd_block128_t);
}
-static size_t method_min_decrypt_head_space(fastd_context *ctx) {
+static size_t method_min_decrypt_head_space(fastd_context_t *ctx) {
return 0;
}
-static size_t method_min_encrypt_tail_space(fastd_context *ctx) {
- return (sizeof(fastd_block128)-1);
+static size_t method_min_encrypt_tail_space(fastd_context_t *ctx) {
+ return (sizeof(fastd_block128_t)-1);
}
-static size_t method_min_decrypt_tail_space(fastd_context *ctx) {
- return (2*sizeof(fastd_block128)-1);
+static size_t method_min_decrypt_tail_space(fastd_context_t *ctx) {
+ return (2*sizeof(fastd_block128_t)-1);
}
-static fastd_method_session_state* method_session_init(fastd_context *ctx, uint8_t *secret, size_t length, bool initiator) {
+static fastd_method_session_state_t* method_session_init(fastd_context_t *ctx, uint8_t *secret, size_t length, bool initiator) {
int i;
if (length < KEYBYTES)
exit_bug(ctx, "aes128-gcm: tried to init with short secret");
- fastd_method_session_state *session = malloc(sizeof(fastd_method_session_state));
+ fastd_method_session_state_t *session = malloc(sizeof(fastd_method_session_state_t));
session->valid_till = ctx->now;
session->valid_till.tv_sec += ctx->conf->key_valid;
@@ -111,14 +111,14 @@ static fastd_method_session_state* method_session_init(fastd_context *ctx, uint8
session->refresh_after = ctx->now;
session->refresh_after.tv_sec += ctx->conf->key_refresh;
- fastd_block128 key;
- memcpy(key.b, secret, sizeof(fastd_block128));
+ fastd_block128_t key;
+ memcpy(key.b, secret, sizeof(fastd_block128_t));
session->cstate_aes128ctr = ctx->conf->crypto_aes128ctr->set_key(ctx, ctx->crypto_aes128ctr, &key);
- static const fastd_block128 zeroblock = {};
- fastd_block128 H;
+ static const fastd_block128_t zeroblock = {};
+ fastd_block128_t H;
- ctx->conf->crypto_aes128ctr->crypt(ctx, session->cstate_aes128ctr, &H, &zeroblock, sizeof(fastd_block128), &zeroblock);
+ ctx->conf->crypto_aes128ctr->crypt(ctx, session->cstate_aes128ctr, &H, &zeroblock, sizeof(fastd_block128_t), &zeroblock);
session->cstate_ghash = ctx->conf->crypto_ghash->set_h(ctx, ctx->crypto_ghash, &H);
@@ -133,72 +133,72 @@ static fastd_method_session_state* method_session_init(fastd_context *ctx, uint8
return session;
}
-static bool method_session_is_valid(fastd_context *ctx, fastd_method_session_state *session) {
+static bool method_session_is_valid(fastd_context_t *ctx, fastd_method_session_state_t *session) {
return (session && timespec_after(&session->valid_till, &ctx->now));
}
-static bool method_session_is_initiator(fastd_context *ctx, fastd_method_session_state *session) {
+static bool method_session_is_initiator(fastd_context_t *ctx, fastd_method_session_state_t *session) {
return (session->send_nonce[0] & 1);
}
-static bool method_session_want_refresh(fastd_context *ctx, fastd_method_session_state *session) {
+static bool method_session_want_refresh(fastd_context_t *ctx, fastd_method_session_state_t *session) {
return timespec_after(&ctx->now, &session->refresh_after);
}
-static void method_session_free(fastd_context *ctx, fastd_method_session_state *session) {
+static void method_session_free(fastd_context_t *ctx, fastd_method_session_state_t *session) {
if(session) {
ctx->conf->crypto_aes128ctr->free_state(ctx, session->cstate_aes128ctr);
ctx->conf->crypto_ghash->free_state(ctx, session->cstate_ghash);
- memset(session, 0, sizeof(fastd_method_session_state));
+ memset(session, 0, sizeof(fastd_method_session_state_t));
free(session);
}
}
-static inline void put_size(fastd_block128 *out, size_t len) {
- memset(out, 0, sizeof(fastd_block128)-5);
- out->b[sizeof(fastd_block128)-5] = len >> 29;
- out->b[sizeof(fastd_block128)-4] = len >> 21;
- out->b[sizeof(fastd_block128)-3] = len >> 13;
- out->b[sizeof(fastd_block128)-2] = len >> 5;
- out->b[sizeof(fastd_block128)-1] = len << 3;
+static inline void put_size(fastd_block128_t *out, size_t len) {
+ memset(out, 0, sizeof(fastd_block128_t)-5);
+ out->b[sizeof(fastd_block128_t)-5] = len >> 29;
+ out->b[sizeof(fastd_block128_t)-4] = len >> 21;
+ out->b[sizeof(fastd_block128_t)-3] = len >> 13;
+ out->b[sizeof(fastd_block128_t)-2] = len >> 5;
+ out->b[sizeof(fastd_block128_t)-1] = len << 3;
}
-static bool method_encrypt(fastd_context *ctx, fastd_peer *peer, fastd_method_session_state *session, fastd_buffer *out, fastd_buffer in) {
- fastd_buffer_pull_head(&in, sizeof(fastd_block128));
- memset(in.data, 0, sizeof(fastd_block128));
+static bool method_encrypt(fastd_context_t *ctx, fastd_peer_t *peer, fastd_method_session_state_t *session, fastd_buffer_t *out, fastd_buffer_t in) {
+ fastd_buffer_pull_head(&in, sizeof(fastd_block128_t));
+ memset(in.data, 0, sizeof(fastd_block128_t));
- size_t tail_len = alignto(in.len, sizeof(fastd_block128))-in.len;
- *out = fastd_buffer_alloc(in.len, alignto(NONCEBYTES, 16), sizeof(fastd_block128)+tail_len);
+ size_t tail_len = alignto(in.len, sizeof(fastd_block128_t))-in.len;
+ *out = fastd_buffer_alloc(in.len, alignto(NONCEBYTES, 16), sizeof(fastd_block128_t)+tail_len);
if (tail_len)
memset(in.data+in.len, 0, tail_len);
- fastd_block128 nonce;
+ fastd_block128_t nonce;
memcpy(nonce.b, session->send_nonce, NONCEBYTES);
- memset(nonce.b+NONCEBYTES, 0, sizeof(fastd_block128)-NONCEBYTES-1);
- nonce.b[sizeof(fastd_block128)-1] = 1;
+ memset(nonce.b+NONCEBYTES, 0, sizeof(fastd_block128_t)-NONCEBYTES-1);
+ nonce.b[sizeof(fastd_block128_t)-1] = 1;
- int n_blocks = (in.len+sizeof(fastd_block128)-1)/sizeof(fastd_block128);
+ int n_blocks = (in.len+sizeof(fastd_block128_t)-1)/sizeof(fastd_block128_t);
- fastd_block128 *inblocks = in.data;
- fastd_block128 *outblocks = out->data;
- fastd_block128 sig;
+ fastd_block128_t *inblocks = in.data;
+ fastd_block128_t *outblocks = out->data;
+ fastd_block128_t sig;
- bool ok = ctx->conf->crypto_aes128ctr->crypt(ctx, session->cstate_aes128ctr, outblocks, inblocks, n_blocks*sizeof(fastd_block128), &nonce);
+ bool ok = ctx->conf->crypto_aes128ctr->crypt(ctx, session->cstate_aes128ctr, outblocks, inblocks, n_blocks*sizeof(fastd_block128_t), &nonce);
if (ok) {
if (tail_len)
memset(out->data+out->len, 0, tail_len);
- put_size(&outblocks[n_blocks], in.len-sizeof(fastd_block128));
+ put_size(&outblocks[n_blocks], in.len-sizeof(fastd_block128_t));
ok = ctx->conf->crypto_ghash->hash(ctx, session->cstate_ghash, &sig, outblocks+1, n_blocks);
}
if (!ok) {
/* restore original buffer */
- fastd_buffer_push_head(&in, sizeof(fastd_block128));
+ fastd_buffer_push_head(&in, sizeof(fastd_block128_t));
fastd_buffer_free(*out);
return false;
}
@@ -214,17 +214,17 @@ static bool method_encrypt(fastd_context *ctx, fastd_peer *peer, fastd_method_se
return true;
}
-static bool method_decrypt(fastd_context *ctx, fastd_peer *peer, fastd_method_session_state *session, fastd_buffer *out, fastd_buffer in) {
- if (in.len < NONCEBYTES+sizeof(fastd_block128))
+static bool method_decrypt(fastd_context_t *ctx, fastd_peer_t *peer, fastd_method_session_state_t *session, fastd_buffer_t *out, fastd_buffer_t in) {
+ if (in.len < NONCEBYTES+sizeof(fastd_block128_t))
return false;
if (!method_session_is_valid(ctx, session))
return false;
- fastd_block128 nonce;
+ fastd_block128_t nonce;
memcpy(nonce.b, in.data, NONCEBYTES);
- memset(nonce.b+NONCEBYTES, 0, sizeof(fastd_block128)-NONCEBYTES-1);
- nonce.b[sizeof(fastd_block128)-1] = 1;
+ memset(nonce.b+NONCEBYTES, 0, sizeof(fastd_block128_t)-NONCEBYTES-1);
+ nonce.b[sizeof(fastd_block128_t)-1] = 1;
int64_t age;
if (!is_nonce_valid(nonce.b, session->receive_nonce, &age))
@@ -240,27 +240,27 @@ static bool method_decrypt(fastd_context *ctx, fastd_peer *peer, fastd_method_se
fastd_buffer_push_head(&in, NONCEBYTES);
- size_t tail_len = alignto(in.len, sizeof(fastd_block128))-in.len;
+ size_t tail_len = alignto(in.len, sizeof(fastd_block128_t))-in.len;
*out = fastd_buffer_alloc(in.len, 0, tail_len);
- int n_blocks = (in.len+sizeof(fastd_block128)-1)/sizeof(fastd_block128);
+ int n_blocks = (in.len+sizeof(fastd_block128_t)-1)/sizeof(fastd_block128_t);
- fastd_block128 *inblocks = in.data;
- fastd_block128 *outblocks = out->data;
- fastd_block128 sig;
+ fastd_block128_t *inblocks = in.data;
+ fastd_block128_t *outblocks = out->data;
+ fastd_block128_t sig;
- bool ok = ctx->conf->crypto_aes128ctr->crypt(ctx, session->cstate_aes128ctr, outblocks, inblocks, n_blocks*sizeof(fastd_block128), &nonce);
+ bool ok = ctx->conf->crypto_aes128ctr->crypt(ctx, session->cstate_aes128ctr, outblocks, inblocks, n_blocks*sizeof(fastd_block128_t), &nonce);
if (ok) {
if (tail_len)
memset(in.data+in.len, 0, tail_len);
- put_size(&inblocks[n_blocks], in.len-sizeof(fastd_block128));
+ put_size(&inblocks[n_blocks], in.len-sizeof(fastd_block128_t));
ok = ctx->conf->crypto_ghash->hash(ctx, session->cstate_ghash, &sig, inblocks+1, n_blocks);
}
- if (!ok || memcmp(&sig, &outblocks[0], sizeof(fastd_block128)) != 0) {
+ if (!ok || memcmp(&sig, &outblocks[0], sizeof(fastd_block128_t)) != 0) {
fastd_buffer_free(*out);
/* restore input buffer */
@@ -271,7 +271,7 @@ static bool method_decrypt(fastd_context *ctx, fastd_peer *peer, fastd_method_se
fastd_buffer_free(in);
- fastd_buffer_push_head(out, sizeof(fastd_block128));
+ fastd_buffer_push_head(out, sizeof(fastd_block128_t));
if (age < 0) {
session->receive_reorder_seen >>= age;
@@ -292,7 +292,7 @@ static bool method_decrypt(fastd_context *ctx, fastd_peer *peer, fastd_method_se
return true;
}
-const fastd_method fastd_method_aes128_gcm = {
+const fastd_method_t fastd_method_aes128_gcm = {
.name = "aes128-gcm",
.max_packet_size = method_max_packet_size,