diff options
| author | Denys Vlasenko <vda.linux@googlemail.com> | 2018-11-23 18:02:44 +0100 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2018-11-23 18:02:44 +0100 |
| commit | 5e4236d226309a32842a6928878fd0e1cd5937e7 (patch) | |
| tree | eb41a6c5cbaaac79b22b8c200e0aabfe26ba7d15 /networking/tls_aesgcm.c | |
| parent | 83e5c627e1b2c7f34d694696d0c3d5a3ce25dc59 (diff) | |
| download | busybox-5e4236d226309a32842a6928878fd0e1cd5937e7.tar.gz | |
tls: in AES-CBC code, do not set key for every record - do it once
function old new delta
aes_setkey 16 212 +196
tls_handshake 1941 1977 +36
aes_encrypt_1 382 396 +14
xwrite_encrypted 605 604 -1
tls_xread_record 659 656 -3
aes_encrypt_one_block 65 59 -6
aes_cbc_encrypt 172 121 -51
aesgcm_setkey 58 - -58
aes_cbc_decrypt 958 881 -77
KeyExpansion 188 - -188
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 3/5 up/down: 246/-384) Total: -138 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'networking/tls_aesgcm.c')
| -rw-r--r-- | networking/tls_aesgcm.c | 10 |
1 files changed, 0 insertions, 10 deletions
diff --git a/networking/tls_aesgcm.c b/networking/tls_aesgcm.c index 584cee98e..eb32f4c05 100644 --- a/networking/tls_aesgcm.c +++ b/networking/tls_aesgcm.c @@ -136,13 +136,3 @@ void FAST_FUNC aesgcm_GHASH(byte* h, const byte* a, unsigned aSz, const byte* c, /* Copy the result into s. */ XMEMCPY(s, x, sSz); } - -void FAST_FUNC aesgcm_setkey(uint8_t H[16], struct tls_aes *aes, const byte* key, unsigned len) -{ - byte iv[AES_BLOCK_SIZE]; - - aes_setkey(aes, key, len); - - memset(iv, 0, AES_BLOCK_SIZE); - aes_encrypt_one_block(aes, iv, H); -} |