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-rw-r--r--src/protocol_ec25519_fhmqvc.c74
-rw-r--r--src/sha256.c14
-rw-r--r--src/sha256.h10
3 files changed, 49 insertions, 49 deletions
diff --git a/src/protocol_ec25519_fhmqvc.c b/src/protocol_ec25519_fhmqvc.c
index 6f8b3b5..f96e8c4 100644
--- a/src/protocol_ec25519_fhmqvc.c
+++ b/src/protocol_ec25519_fhmqvc.c
@@ -36,14 +36,11 @@
#define PUBLICKEYBYTES 32
#define SECRETKEYBYTES 32
-#define HMACWORDS FASTD_SHA256_HASH_WORDS
-#define HMACBYTES FASTD_SHA256_HASH_BYTES
-#define HASHWORDS FASTD_SHA256_HASH_WORDS
#define HASHBYTES FASTD_SHA256_HASH_BYTES
-#if HASHWORDS != FASTD_HMACSHA256_KEY_WORDS
-#error bug: HASHWORDS != FASTD_HMACSHA256_KEY_WORDS
+#if HASHBYTES != FASTD_HMACSHA256_KEY_BYTES
+#error bug: HASHBYTES != FASTD_HMACSHA256_KEY_BYTES
#endif
#if HASHBYTES != SECRETKEYBYTES
@@ -279,10 +276,8 @@ static void respond_handshake(fastd_context_t *ctx, const fastd_socket_t *sock,
const handshake_key_t *handshake_key, const ecc_int256_t *peer_handshake_key, const fastd_handshake_t *handshake, const fastd_method_t *method) {
pr_debug(ctx, "responding handshake with %P[%I]...", peer, remote_addr);
- uint32_t hashbuf[HASHWORDS];
- uint32_t hmacbuf[HMACWORDS];
-
- fastd_sha256_blocks(hashbuf,
+ fastd_sha256_t hashbuf;
+ fastd_sha256_blocks(&hashbuf,
handshake_key->public_key.p,
peer_handshake_key->p,
ctx->conf->protocol_config->public_key.p,
@@ -291,8 +286,8 @@ static void respond_handshake(fastd_context_t *ctx, const fastd_socket_t *sock,
ecc_int256_t d = {{0}}, e = {{0}}, eb, s;
- memcpy(d.p, hashbuf, HASHBYTES/2);
- memcpy(e.p, hashbuf+HASHWORDS/2, HASHBYTES/2);
+ memcpy(d.p, hashbuf.b, HASHBYTES/2);
+ memcpy(e.p, hashbuf.b+HASHBYTES/2, HASHBYTES/2);
d.p[15] |= 0x80;
e.p[15] |= 0x80;
@@ -321,8 +316,8 @@ static void respond_handshake(fastd_context_t *ctx, const fastd_socket_t *sock,
ecc_int256_t sigma;
ecc_25519_store_packed(&sigma, &work);
- uint32_t shared_handshake_key[HASHWORDS];
- fastd_sha256_blocks(shared_handshake_key,
+ fastd_sha256_t shared_handshake_key;
+ fastd_sha256_blocks(&shared_handshake_key,
handshake_key->public_key.p,
peer_handshake_key->p,
ctx->conf->protocol_config->public_key.p,
@@ -330,15 +325,16 @@ static void respond_handshake(fastd_context_t *ctx, const fastd_socket_t *sock,
sigma.p,
NULL);
- fastd_hmacsha256_blocks(hmacbuf, shared_handshake_key, ctx->conf->protocol_config->public_key.p, handshake_key->public_key.p, NULL);
+ fastd_sha256_t hmacbuf;
+ fastd_hmacsha256_blocks(&hmacbuf, shared_handshake_key.w, ctx->conf->protocol_config->public_key.p, handshake_key->public_key.p, NULL);
- fastd_buffer_t buffer = fastd_handshake_new_reply(ctx, handshake, method, 4*(4+PUBLICKEYBYTES) + 4+HMACBYTES);
+ fastd_buffer_t buffer = fastd_handshake_new_reply(ctx, handshake, method, 4*(4+PUBLICKEYBYTES) + 4+HASHBYTES);
fastd_handshake_add(ctx, &buffer, RECORD_SENDER_KEY, PUBLICKEYBYTES, ctx->conf->protocol_config->public_key.p);
fastd_handshake_add(ctx, &buffer, RECORD_RECEIPIENT_KEY, PUBLICKEYBYTES, peer->protocol_config->public_key.p);
fastd_handshake_add(ctx, &buffer, RECORD_SENDER_HANDSHAKE_KEY, PUBLICKEYBYTES, handshake_key->public_key.p);
fastd_handshake_add(ctx, &buffer, RECORD_RECEIPIENT_HANDSHAKE_KEY, PUBLICKEYBYTES, peer_handshake_key->p);
- fastd_handshake_add(ctx, &buffer, RECORD_T, HMACBYTES, hmacbuf);
+ fastd_handshake_add(ctx, &buffer, RECORD_T, HASHBYTES, hmacbuf.b);
fastd_send_handshake(ctx, sock, local_addr, remote_addr, buffer);
}
@@ -370,14 +366,14 @@ static bool establish(fastd_context_t *ctx, fastd_peer_t *peer, const fastd_meth
peer->protocol_state->old_session = (protocol_session_t){};
}
- uint32_t hash[HASHWORDS];
- fastd_sha256_blocks(hash, X->p, Y->p, A->p, B->p, sigma->p, NULL);
+ fastd_sha256_t hash;
+ fastd_sha256_blocks(&hash, X->p, Y->p, A->p, B->p, sigma->p, NULL);
peer->protocol_state->session.established = ctx->now;
peer->protocol_state->session.handshakes_cleaned = false;
peer->protocol_state->session.refreshing = false;
peer->protocol_state->session.method = method;
- peer->protocol_state->session.method_state = method->session_init(ctx, (uint8_t*)hash, HASHBYTES, initiator);
+ peer->protocol_state->session.method_state = method->session_init(ctx, hash.b, HASHBYTES, initiator);
peer->protocol_state->last_serial = serial;
fastd_peer_seen(ctx, peer);
@@ -404,10 +400,8 @@ static void finish_handshake(fastd_context_t *ctx, fastd_socket_t *sock, const f
const fastd_handshake_t *handshake, const fastd_method_t *method) {
pr_debug(ctx, "finishing handshake with %P[%I]...", peer, remote_addr);
- uint32_t hashbuf[HASHWORDS];
- uint32_t hmacbuf[HMACWORDS];
-
- fastd_sha256_blocks(hashbuf,
+ fastd_sha256_t hashbuf;
+ fastd_sha256_blocks(&hashbuf,
peer_handshake_key->p,
handshake_key->public_key.p,
peer->protocol_config->public_key.p,
@@ -416,8 +410,8 @@ static void finish_handshake(fastd_context_t *ctx, fastd_socket_t *sock, const f
ecc_int256_t d = {{0}}, e = {{0}}, da, s;
- memcpy(d.p, hashbuf, HASHBYTES/2);
- memcpy(e.p, hashbuf+HASHWORDS/2, HASHBYTES/2);
+ memcpy(d.p, hashbuf.b, HASHBYTES/2);
+ memcpy(e.p, hashbuf.b+HASHBYTES/2, HASHBYTES/2);
d.p[15] |= 0x80;
e.p[15] |= 0x80;
@@ -446,8 +440,8 @@ static void finish_handshake(fastd_context_t *ctx, fastd_socket_t *sock, const f
ecc_int256_t sigma;
ecc_25519_store_packed(&sigma, &work);
- uint32_t shared_handshake_key[HASHWORDS];
- fastd_sha256_blocks(shared_handshake_key,
+ fastd_sha256_t shared_handshake_key;
+ fastd_sha256_blocks(&shared_handshake_key,
peer_handshake_key->p,
handshake_key->public_key.p,
peer->protocol_config->public_key.p,
@@ -455,24 +449,25 @@ static void finish_handshake(fastd_context_t *ctx, fastd_socket_t *sock, const f
sigma.p,
NULL);
- if(!fastd_hmacsha256_blocks_verify(handshake->records[RECORD_T].data, shared_handshake_key, peer->protocol_config->public_key.p, peer_handshake_key->p, NULL)) {
+ if(!fastd_hmacsha256_blocks_verify(handshake->records[RECORD_T].data, shared_handshake_key.w, peer->protocol_config->public_key.p, peer_handshake_key->p, NULL)) {
pr_warn(ctx, "received invalid protocol handshake response from %P[%I]", peer, remote_addr);
return;
}
- fastd_hmacsha256_blocks(hmacbuf, shared_handshake_key, ctx->conf->protocol_config->public_key.p, handshake_key->public_key.p, NULL);
+ fastd_sha256_t hmacbuf;
+ fastd_hmacsha256_blocks(&hmacbuf, shared_handshake_key.w, ctx->conf->protocol_config->public_key.p, handshake_key->public_key.p, NULL);
if (!establish(ctx, peer, method, sock, local_addr, remote_addr, true, &handshake_key->public_key, peer_handshake_key, &ctx->conf->protocol_config->public_key,
&peer->protocol_config->public_key, &sigma, handshake_key->serial))
return;
- fastd_buffer_t buffer = fastd_handshake_new_reply(ctx, handshake, method, 4*(4+PUBLICKEYBYTES) + 4+HMACBYTES);
+ fastd_buffer_t buffer = fastd_handshake_new_reply(ctx, handshake, method, 4*(4+PUBLICKEYBYTES) + 4+HASHBYTES);
fastd_handshake_add(ctx, &buffer, RECORD_SENDER_KEY, PUBLICKEYBYTES, ctx->conf->protocol_config->public_key.p);
fastd_handshake_add(ctx, &buffer, RECORD_RECEIPIENT_KEY, PUBLICKEYBYTES, peer->protocol_config->public_key.p);
fastd_handshake_add(ctx, &buffer, RECORD_SENDER_HANDSHAKE_KEY, PUBLICKEYBYTES, handshake_key->public_key.p);
fastd_handshake_add(ctx, &buffer, RECORD_RECEIPIENT_HANDSHAKE_KEY, PUBLICKEYBYTES, peer_handshake_key->p);
- fastd_handshake_add(ctx, &buffer, RECORD_T, HMACBYTES, hmacbuf);
+ fastd_handshake_add(ctx, &buffer, RECORD_T, HASHBYTES, hmacbuf.b);
fastd_send_handshake(ctx, sock, local_addr, remote_addr, buffer);
}
@@ -482,9 +477,8 @@ static void handle_finish_handshake(fastd_context_t *ctx, fastd_socket_t *sock,
const fastd_handshake_t *handshake, const fastd_method_t *method) {
pr_debug(ctx, "handling handshake finish with %P[%I]...", peer, remote_addr);
- uint32_t hashbuf[HASHWORDS];
-
- fastd_sha256_blocks(hashbuf,
+ fastd_sha256_t hashbuf;
+ fastd_sha256_blocks(&hashbuf,
handshake_key->public_key.p,
peer_handshake_key->p,
ctx->conf->protocol_config->public_key.p,
@@ -493,8 +487,8 @@ static void handle_finish_handshake(fastd_context_t *ctx, fastd_socket_t *sock,
ecc_int256_t d = {{0}}, e = {{0}}, eb, s;
- memcpy(d.p, hashbuf, HASHBYTES/2);
- memcpy(e.p, hashbuf+HASHWORDS/2, HASHBYTES/2);
+ memcpy(d.p, hashbuf.b, HASHBYTES/2);
+ memcpy(e.p, hashbuf.b+HASHBYTES/2, HASHBYTES/2);
d.p[15] |= 0x80;
e.p[15] |= 0x80;
@@ -523,8 +517,8 @@ static void handle_finish_handshake(fastd_context_t *ctx, fastd_socket_t *sock,
ecc_int256_t sigma;
ecc_25519_store_packed(&sigma, &work);
- uint32_t shared_handshake_key[HASHWORDS];
- fastd_sha256_blocks(shared_handshake_key,
+ fastd_sha256_t shared_handshake_key;
+ fastd_sha256_blocks(&shared_handshake_key,
handshake_key->public_key.p,
peer_handshake_key->p,
ctx->conf->protocol_config->public_key.p,
@@ -532,7 +526,7 @@ static void handle_finish_handshake(fastd_context_t *ctx, fastd_socket_t *sock,
sigma.p,
NULL);
- if (!fastd_hmacsha256_blocks_verify(handshake->records[RECORD_T].data, shared_handshake_key, peer->protocol_config->public_key.p, peer_handshake_key->p, NULL)) {
+ if (!fastd_hmacsha256_blocks_verify(handshake->records[RECORD_T].data, shared_handshake_key.w, peer->protocol_config->public_key.p, peer_handshake_key->p, NULL)) {
pr_warn(ctx, "received invalid protocol handshake finish from %P[%I]", peer, remote_addr);
return;
}
@@ -699,7 +693,7 @@ static void protocol_handshake_handle(fastd_context_t *ctx, fastd_socket_t *sock
return;
}
- if (handshake->type > 1 && !has_field(handshake, RECORD_T, HMACBYTES)) {
+ if (handshake->type > 1 && !has_field(handshake, RECORD_T, HASHBYTES)) {
pr_debug(ctx, "received handshake reply without HMAC from %P[%I]", peer, remote_addr);
return;
}
diff --git a/src/sha256.c b/src/sha256.c
index 4722272..61faae7 100644
--- a/src/sha256.c
+++ b/src/sha256.c
@@ -133,7 +133,7 @@ static void sha256_blocks_va(uint32_t out[FASTD_SHA256_HASH_WORDS], const uint32
out[i] = htonl(h[i]);
}
-static void hmacsha256_blocks_va(uint32_t out[FASTD_SHA256_HASH_WORDS], const uint32_t key[FASTD_HMACSHA256_KEY_WORDS], va_list ap) {
+static void hmacsha256_blocks_va(fastd_sha256_t *out, const uint32_t key[FASTD_HMACSHA256_KEY_WORDS], va_list ap) {
static const uint32_t ipad2[8] = {
0x36363636,
0x36363636,
@@ -170,17 +170,17 @@ static void hmacsha256_blocks_va(uint32_t out[FASTD_SHA256_HASH_WORDS], const ui
}
-void fastd_sha256_blocks(uint32_t out[FASTD_SHA256_HASH_WORDS], ...) {
+void fastd_sha256_blocks(fastd_sha256_t *out, ...) {
va_list ap;
va_start(ap, out);
const uint32_t *in1 = va_arg(ap, const uint32_t*);
const uint32_t *in2 = in1 ? va_arg(ap, const uint32_t*) : NULL;
- sha256_blocks_va(out, in1, in2, ap);
+ sha256_blocks_va(out->w, in1, in2, ap);
va_end(ap);
}
-void fastd_hmacsha256_blocks(uint32_t out[FASTD_SHA256_HASH_WORDS], const uint32_t key[FASTD_HMACSHA256_KEY_WORDS], ...) {
+void fastd_hmacsha256_blocks(fastd_sha256_t *out, const uint32_t key[FASTD_HMACSHA256_KEY_WORDS], ...) {
va_list ap;
va_start(ap, key);
@@ -190,11 +190,11 @@ void fastd_hmacsha256_blocks(uint32_t out[FASTD_SHA256_HASH_WORDS], const uint32
bool fastd_hmacsha256_blocks_verify(const uint8_t mac[FASTD_SHA256_HASH_BYTES], const uint32_t key[FASTD_HMACSHA256_KEY_WORDS], ...) {
va_list ap;
- uint32_t out[8];
+ fastd_sha256_t out;
va_start(ap, key);
- hmacsha256_blocks_va(out, key, ap);
+ hmacsha256_blocks_va(&out, key, ap);
va_end(ap);
- return !memcmp(out, mac, sizeof(out));
+ return !memcmp(out.b, mac, FASTD_SHA256_HASH_BYTES);
}
diff --git a/src/sha256.h b/src/sha256.h
index acafe7e..7f29593 100644
--- a/src/sha256.h
+++ b/src/sha256.h
@@ -42,8 +42,14 @@
#define FASTD_HMACSHA256_KEY_BYTES (4*FASTD_HMACSHA256_KEY_WORDS)
-void fastd_sha256_blocks(uint32_t out[FASTD_SHA256_HASH_WORDS], ...);
-void fastd_hmacsha256_blocks(uint32_t out[FASTD_SHA256_HASH_WORDS], const uint32_t key[FASTD_HMACSHA256_KEY_WORDS], ...);
+typedef union fastd_sha256 {
+ uint32_t w[FASTD_SHA256_HASH_WORDS];
+ uint8_t b[FASTD_SHA256_HASH_BYTES];
+} fastd_sha256_t;
+
+
+void fastd_sha256_blocks(fastd_sha256_t *out, ...);
+void fastd_hmacsha256_blocks(fastd_sha256_t *out, const uint32_t key[FASTD_HMACSHA256_KEY_WORDS], ...);
bool fastd_hmacsha256_blocks_verify(const uint8_t mac[FASTD_SHA256_HASH_BYTES], const uint32_t key[FASTD_HMACSHA256_KEY_WORDS], ...);
#endif /* _FASTD_SHA256_H_ */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 17:25:40 +0100