Denys Vlasenko
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6e99f1cb45
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tls: replace aes encryption/decryption by much smaller one
The replacement code is ~6 times slower,
but drastically decreases size of tls_aes.o:
text data bss dec hex filename
8050 0 0 8050 1f72 tls_aes_OLD.o
2461 0 0 2461 99d tls_aes.o
function old new delta
sbox - 256 +256
rsbox - 256 +256
KeyExpansion - 197 +197
Subword - 66 +66
AddRoundKey - 61 +61
static.Rcon - 10 +10
rcon 40 - -40
setup_mix 80 - -80
setup_mix2 123 - -123
aes_cbc_decrypt 1377 971 -406
aes_cbc_encrypt 1375 644 -731
psAesInit 848 - -848
Te4 1024 - -1024
TE0 1024 - -1024
TD0 1024 - -1024
Td4 1040 - -1040
------------------------------------------------------------------------------
(add/remove: 6/8 grow/shrink: 0/2 up/down: 846/-6340) Total: -5494 bytes
This code is based on public domain "tiny-AES128-C" code.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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2017-04-01 20:11:59 +02:00 |
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Denys Vlasenko
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c31b54fd81
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tls: fold AES CBC en/decryption into single functions
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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2017-02-04 16:23:49 +01:00 |
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Denys Vlasenko
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6b1b004845
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tls: commented out psPool_t use
function old new delta
psAesEncrypt 159 162 +3
der_binary_to_pstm 42 40 -2
xwrite_and_hash 437 434 -3
xread_tls_block 446 443 -3
pstm_div_2d 449 444 -5
psAesDecrypt 179 174 -5
pstm_init_size 52 45 -7
pstm_init 46 39 -7
pstm_to_unsigned_bin 165 157 -8
tls_main 1265 1256 -9
pstm_mulmod 132 123 -9
pstm_mod 125 116 -9
pstm_init_copy 93 84 -9
psAesInitKey 840 825 -15
send_client_key_exchange 362 342 -20
psAesInit 103 80 -23
psRsaEncryptPub 429 403 -26
psAesDecryptBlock 1211 1184 -27
psAesEncryptBlock 1223 1193 -30
pstm_exptmod 1582 1524 -58
pstm_div 1557 1472 -85
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/20 up/down: 3/-360) Total: -357 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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2017-01-19 15:51:00 +01:00 |
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Denys Vlasenko
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b7e9ae6e9f
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tls: added AES code and made it compile. not used yet
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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2017-01-18 17:20:27 +01:00 |
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