Denys Vlasenko
4a9ec95565
tls: code shrink in AES code
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function old new delta
aes_cbc_decrypt 862 847 -15
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-12-15 18:47:25 +01:00
Denys Vlasenko
84fc645605
*: slap on a few ALIGN1/2s where appropriate
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The result of looking at "grep -F -B2 '*fill*' busybox_unstripped.map"
text data bss dec hex filename
952537 485 7296 960318 ea73e busybox_old
952527 485 7296 960308 ea734 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2019-05-21 17:29:24 +02:00
Denys Vlasenko
5e4236d226
tls: in AES-CBC code, do not set key for every record - do it once
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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>
2018-11-23 18:02:44 +01:00
Denys Vlasenko
83e5c627e1
tls: add support for TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 cipher
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function old new delta
xwrite_encrypted 209 605 +396
GHASH - 395 +395
aes_encrypt_1 - 382 +382
GMULT - 192 +192
tls_xread_record 489 659 +170
aes_encrypt_one_block - 65 +65
aesgcm_setkey - 58 +58
FlattenSzInBits - 52 +52
tls_handshake 1890 1941 +51
xwrite_and_update_handshake_hash 46 81 +35
xorbuf - 24 +24
aes_setkey - 16 +16
psRsaEncryptPub 413 421 +8
stty_main 1221 1227 +6
ssl_client_main 138 143 +5
next_token 841 845 +4
spawn_ssl_client 218 219 +1
volume_id_probe_hfs_hfsplus 564 563 -1
read_package_field 232 230 -2
i2cdetect_main 674 672 -2
fail_hunk 139 136 -3
parse_expr 891 883 -8
curve25519 802 793 -9
aes_cbc_decrypt 971 958 -13
xwrite_handshake_record 43 - -43
aes_cbc_encrypt 644 172 -472
------------------------------------------------------------------------------
(add/remove: 9/1 grow/shrink: 9/8 up/down: 1860/-553) Total: 1307 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-11-23 17:48:07 +01:00
Denys Vlasenko
2c1258c620
Move get_unaligned_le32() macros to platform.h
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-15 20:22:25 +02:00
Denys Vlasenko
6e99f1cb45
tls: replace aes encryption/decryption by much smaller one
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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>
2017-04-01 20:11:59 +02:00
Denys Vlasenko
c31b54fd81
tls: fold AES CBC en/decryption into single functions
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-02-04 16:23:49 +01:00
Denys Vlasenko
6b1b004845
tls: commented out psPool_t use
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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>
2017-01-19 15:51:00 +01:00
Denys Vlasenko
b7e9ae6e9f
tls: added AES code and made it compile. not used yet
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-01-18 17:20:27 +01:00
