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-rw-r--r--src/net/80211/wpa_ccmp.c11
-rw-r--r--src/net/80211/wpa_tkip.c9
-rw-r--r--src/net/pccrc.c9
-rw-r--r--src/net/tls.c51
4 files changed, 34 insertions, 46 deletions
diff --git a/src/net/80211/wpa_ccmp.c b/src/net/80211/wpa_ccmp.c
index a073c6a3c..0abd217e7 100644
--- a/src/net/80211/wpa_ccmp.c
+++ b/src/net/80211/wpa_ccmp.c
@@ -478,16 +478,15 @@ struct net80211_crypto ccmp_crypto __net80211_crypto = {
static void ccmp_kie_mic ( const void *kck, const void *msg, size_t len,
void *mic )
{
- u8 sha1_ctx[SHA1_CTX_SIZE];
+ u8 ctx[SHA1_CTX_SIZE + SHA1_BLOCK_SIZE];
u8 kckb[16];
u8 hash[SHA1_DIGEST_SIZE];
- size_t kck_len = 16;
- memcpy ( kckb, kck, kck_len );
+ memcpy ( kckb, kck, sizeof ( kckb ) );
- hmac_init ( &sha1_algorithm, sha1_ctx, kckb, &kck_len );
- hmac_update ( &sha1_algorithm, sha1_ctx, msg, len );
- hmac_final ( &sha1_algorithm, sha1_ctx, kckb, &kck_len, hash );
+ hmac_init ( &sha1_algorithm, ctx, kckb, sizeof ( kckb ) );
+ hmac_update ( &sha1_algorithm, ctx, msg, len );
+ hmac_final ( &sha1_algorithm, ctx, hash );
memcpy ( mic, hash, 16 );
}
diff --git a/src/net/80211/wpa_tkip.c b/src/net/80211/wpa_tkip.c
index 3b1934b59..3bd651512 100644
--- a/src/net/80211/wpa_tkip.c
+++ b/src/net/80211/wpa_tkip.c
@@ -545,15 +545,14 @@ struct net80211_crypto tkip_crypto __net80211_crypto = {
static void tkip_kie_mic ( const void *kck, const void *msg, size_t len,
void *mic )
{
- uint8_t ctx[MD5_CTX_SIZE];
+ uint8_t ctx[MD5_CTX_SIZE + MD5_BLOCK_SIZE];
u8 kckb[16];
- size_t kck_len = 16;
- memcpy ( kckb, kck, kck_len );
+ memcpy ( kckb, kck, sizeof ( kckb ) );
- hmac_init ( &md5_algorithm, ctx, kckb, &kck_len );
+ hmac_init ( &md5_algorithm, ctx, kckb, sizeof ( kckb ) );
hmac_update ( &md5_algorithm, ctx, msg, len );
- hmac_final ( &md5_algorithm, ctx, kckb, &kck_len, mic );
+ hmac_final ( &md5_algorithm, ctx, mic );
}
/**
diff --git a/src/net/pccrc.c b/src/net/pccrc.c
index 4cd82cd1c..a94bc0e11 100644
--- a/src/net/pccrc.c
+++ b/src/net/pccrc.c
@@ -104,9 +104,8 @@ static void peerdist_info_segment_hash ( struct peerdist_info_segment *segment,
const void *hash, const void *secret ){
const struct peerdist_info *info = segment->info;
struct digest_algorithm *digest = info->digest;
- uint8_t ctx[digest->ctxsize];
+ uint8_t ctx[ hmac_ctxsize ( digest ) ];
size_t digestsize = info->digestsize;
- size_t secretsize = digestsize;
static const uint16_t magic[] = PEERDIST_SEGMENT_ID_MAGIC;
/* Sanity check */
@@ -121,12 +120,10 @@ static void peerdist_info_segment_hash ( struct peerdist_info_segment *segment,
memcpy ( segment->secret, secret, digestsize );
/* Calculate segment identifier */
- hmac_init ( digest, ctx, segment->secret, &secretsize );
- assert ( secretsize == digestsize );
+ hmac_init ( digest, ctx, segment->secret, digestsize );
hmac_update ( digest, ctx, segment->hash, digestsize );
hmac_update ( digest, ctx, magic, sizeof ( magic ) );
- hmac_final ( digest, ctx, segment->secret, &secretsize, segment->id );
- assert ( secretsize == digestsize );
+ hmac_final ( digest, ctx, segment->id );
}
/******************************************************************************
diff --git a/src/net/tls.c b/src/net/tls.c
index 3c4144450..21f707340 100644
--- a/src/net/tls.c
+++ b/src/net/tls.c
@@ -458,17 +458,17 @@ static int tls_generate_random ( struct tls_connection *tls,
* Update HMAC with a list of ( data, len ) pairs
*
* @v digest Hash function to use
- * @v digest_ctx Digest context
+ * @v ctx HMAC context
* @v args ( data, len ) pairs of data, terminated by NULL
*/
static void tls_hmac_update_va ( struct digest_algorithm *digest,
- void *digest_ctx, va_list args ) {
+ void *ctx, va_list args ) {
void *data;
size_t len;
while ( ( data = va_arg ( args, void * ) ) ) {
len = va_arg ( args, size_t );
- hmac_update ( digest, digest_ctx, data, len );
+ hmac_update ( digest, ctx, data, len );
}
}
@@ -485,43 +485,38 @@ static void tls_hmac_update_va ( struct digest_algorithm *digest,
*/
static void tls_p_hash_va ( struct tls_connection *tls,
struct digest_algorithm *digest,
- void *secret, size_t secret_len,
+ const void *secret, size_t secret_len,
void *out, size_t out_len,
va_list seeds ) {
- uint8_t secret_copy[secret_len];
- uint8_t digest_ctx[digest->ctxsize];
- uint8_t digest_ctx_partial[digest->ctxsize];
+ uint8_t ctx[ hmac_ctxsize ( digest ) ];
+ uint8_t ctx_partial[ sizeof ( ctx ) ];
uint8_t a[digest->digestsize];
uint8_t out_tmp[digest->digestsize];
size_t frag_len = digest->digestsize;
va_list tmp;
- /* Copy the secret, in case HMAC modifies it */
- memcpy ( secret_copy, secret, secret_len );
- secret = secret_copy;
DBGC2 ( tls, "TLS %p %s secret:\n", tls, digest->name );
DBGC2_HD ( tls, secret, secret_len );
/* Calculate A(1) */
- hmac_init ( digest, digest_ctx, secret, &secret_len );
+ hmac_init ( digest, ctx, secret, secret_len );
va_copy ( tmp, seeds );
- tls_hmac_update_va ( digest, digest_ctx, tmp );
+ tls_hmac_update_va ( digest, ctx, tmp );
va_end ( tmp );
- hmac_final ( digest, digest_ctx, secret, &secret_len, a );
+ hmac_final ( digest, ctx, a );
DBGC2 ( tls, "TLS %p %s A(1):\n", tls, digest->name );
DBGC2_HD ( tls, &a, sizeof ( a ) );
/* Generate as much data as required */
while ( out_len ) {
/* Calculate output portion */
- hmac_init ( digest, digest_ctx, secret, &secret_len );
- hmac_update ( digest, digest_ctx, a, sizeof ( a ) );
- memcpy ( digest_ctx_partial, digest_ctx, digest->ctxsize );
+ hmac_init ( digest, ctx, secret, secret_len );
+ hmac_update ( digest, ctx, a, sizeof ( a ) );
+ memcpy ( ctx_partial, ctx, sizeof ( ctx_partial ) );
va_copy ( tmp, seeds );
- tls_hmac_update_va ( digest, digest_ctx, tmp );
+ tls_hmac_update_va ( digest, ctx, tmp );
va_end ( tmp );
- hmac_final ( digest, digest_ctx,
- secret, &secret_len, out_tmp );
+ hmac_final ( digest, ctx, out_tmp );
/* Copy output */
if ( frag_len > out_len )
@@ -531,8 +526,7 @@ static void tls_p_hash_va ( struct tls_connection *tls,
DBGC2_HD ( tls, out, frag_len );
/* Calculate A(i) */
- hmac_final ( digest, digest_ctx_partial,
- secret, &secret_len, a );
+ hmac_final ( digest, ctx_partial, a );
DBGC2 ( tls, "TLS %p %s A(n):\n", tls, digest->name );
DBGC2_HD ( tls, &a, sizeof ( a ) );
@@ -551,13 +545,13 @@ static void tls_p_hash_va ( struct tls_connection *tls,
* @v out_len Length of output buffer
* @v ... ( data, len ) pairs of seed data, terminated by NULL
*/
-static void tls_prf ( struct tls_connection *tls, void *secret,
+static void tls_prf ( struct tls_connection *tls, const void *secret,
size_t secret_len, void *out, size_t out_len, ... ) {
va_list seeds;
va_list tmp;
size_t subsecret_len;
- void *md5_secret;
- void *sha1_secret;
+ const void *md5_secret;
+ const void *sha1_secret;
uint8_t buf[out_len];
unsigned int i;
@@ -2213,7 +2207,7 @@ static void tls_hmac_init ( struct tls_cipherspec *cipherspec, void *ctx,
uint64_t seq, struct tls_header *tlshdr ) {
struct digest_algorithm *digest = cipherspec->suite->digest;
- hmac_init ( digest, ctx, cipherspec->mac_secret, &digest->digestsize );
+ hmac_init ( digest, ctx, cipherspec->mac_secret, digest->digestsize );
seq = cpu_to_be64 ( seq );
hmac_update ( digest, ctx, &seq, sizeof ( seq ) );
hmac_update ( digest, ctx, tlshdr, sizeof ( *tlshdr ) );
@@ -2245,8 +2239,7 @@ static void tls_hmac_final ( struct tls_cipherspec *cipherspec, void *ctx,
void *hmac ) {
struct digest_algorithm *digest = cipherspec->suite->digest;
- hmac_final ( digest, ctx, cipherspec->mac_secret,
- &digest->digestsize, hmac );
+ hmac_final ( digest, ctx, hmac );
}
/**
@@ -2263,7 +2256,7 @@ static void tls_hmac ( struct tls_cipherspec *cipherspec,
uint64_t seq, struct tls_header *tlshdr,
const void *data, size_t len, void *hmac ) {
struct digest_algorithm *digest = cipherspec->suite->digest;
- uint8_t ctx[digest->ctxsize];
+ uint8_t ctx[ hmac_ctxsize ( digest ) ];
tls_hmac_init ( cipherspec, ctx, seq, tlshdr );
tls_hmac_update ( cipherspec, ctx, data, len );
@@ -2545,7 +2538,7 @@ static int tls_new_ciphertext ( struct tls_connection *tls,
struct tls_cipherspec *cipherspec = &tls->rx_cipherspec;
struct cipher_algorithm *cipher = cipherspec->suite->cipher;
struct digest_algorithm *digest = cipherspec->suite->digest;
- uint8_t ctx[digest->ctxsize];
+ uint8_t ctx[ hmac_ctxsize ( digest ) ];
uint8_t verify_mac[digest->digestsize];
struct io_buffer *iobuf;
void *mac;
generated by cgit (git 2.34.1) at 2025-02-23 20:32:20 +0000