diff options
| author | Eric Biggers <ebiggers@google.com> | 2020-07-08 09:39:42 -0700 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2020-07-16 21:49:05 +1000 |
| commit | 5a7a0d9400677a5e88fdb362c4d32171384068f2 (patch) | |
| tree | 3224f8dcdd70409b95f67104da91023986ff944c /net/mptcp/crypto.c | |
| parent | 2164960df8f531a06805fdd28d41758ce7691f75 (diff) | |
mptcp: use sha256() instead of open coding
Now that there's a function that calculates the SHA-256 digest of a
buffer in one step, use it instead of sha256_init() + sha256_update() +
sha256_final().
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Cc: mptcp@lists.01.org
Cc: Mat Martineau <mathew.j.martineau@linux.intel.com>
Cc: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'net/mptcp/crypto.c')
| -rw-r--r-- | net/mptcp/crypto.c | 15 |
1 files changed, 3 insertions, 12 deletions
diff --git a/net/mptcp/crypto.c b/net/mptcp/crypto.c index 3d980713a9e2..82bd2b54d741 100644 --- a/net/mptcp/crypto.c +++ b/net/mptcp/crypto.c @@ -32,11 +32,8 @@ void mptcp_crypto_key_sha(u64 key, u32 *token, u64 *idsn) { __be32 mptcp_hashed_key[SHA256_DIGEST_WORDS]; __be64 input = cpu_to_be64(key); - struct sha256_state state; - sha256_init(&state); - sha256_update(&state, (__force u8 *)&input, sizeof(input)); - sha256_final(&state, (u8 *)mptcp_hashed_key); + sha256((__force u8 *)&input, sizeof(input), (u8 *)mptcp_hashed_key); if (token) *token = be32_to_cpu(mptcp_hashed_key[0]); @@ -47,7 +44,6 @@ void mptcp_crypto_key_sha(u64 key, u32 *token, u64 *idsn) void mptcp_crypto_hmac_sha(u64 key1, u64 key2, u8 *msg, int len, void *hmac) { u8 input[SHA256_BLOCK_SIZE + SHA256_DIGEST_SIZE]; - struct sha256_state state; u8 key1be[8]; u8 key2be[8]; int i; @@ -67,13 +63,10 @@ void mptcp_crypto_hmac_sha(u64 key1, u64 key2, u8 *msg, int len, void *hmac) memcpy(&input[SHA256_BLOCK_SIZE], msg, len); - sha256_init(&state); - sha256_update(&state, input, SHA256_BLOCK_SIZE + len); - /* emit sha256(K1 || msg) on the second input block, so we can * reuse 'input' for the last hashing */ - sha256_final(&state, &input[SHA256_BLOCK_SIZE]); + sha256(input, SHA256_BLOCK_SIZE + len, &input[SHA256_BLOCK_SIZE]); /* Prepare second part of hmac */ memset(input, 0x5C, SHA256_BLOCK_SIZE); @@ -82,9 +75,7 @@ void mptcp_crypto_hmac_sha(u64 key1, u64 key2, u8 *msg, int len, void *hmac) for (i = 0; i < 8; i++) input[i + 8] ^= key2be[i]; - sha256_init(&state); - sha256_update(&state, input, SHA256_BLOCK_SIZE + SHA256_DIGEST_SIZE); - sha256_final(&state, (u8 *)hmac); + sha256(input, SHA256_BLOCK_SIZE + SHA256_DIGEST_SIZE, hmac); } #ifdef CONFIG_MPTCP_HMAC_TEST |