Vladislav Grishenko
d3d0d60076
Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support ( #93 )
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* Add Chacha20-Poly1305 authenticated encryption
* Add general AEAD approach.
* Add chacha20-poly1305@openssh.com algo using LibTomCrypt chacha and
poly1305 routines.
Chacha20-Poly1305 is generally faster than AES256 on CPU w/o dedicated
AES instructions, having the same key size.
Compiling in will add ~5,5kB to binary size on x86-64.
function old new delta
chacha_crypt - 1397 +1397
_poly1305_block - 608 +608
poly1305_done - 595 +595
dropbear_chachapoly_crypt - 457 +457
.rodata 26976 27392 +416
poly1305_process - 290 +290
poly1305_init - 221 +221
chacha_setup - 218 +218
encrypt_packet 1068 1270 +202
dropbear_chachapoly_getlength - 147 +147
decrypt_packet 756 897 +141
chacha_ivctr64 - 137 +137
read_packet 543 637 +94
dropbear_chachapoly_start - 94 +94
read_kex_algos 792 880 +88
chacha_keystream - 69 +69
dropbear_mode_chachapoly - 48 +48
sshciphers 280 320 +40
dropbear_mode_none 24 48 +24
dropbear_mode_ctr 24 48 +24
dropbear_mode_cbc 24 48 +24
dropbear_chachapoly_mac - 24 +24
dropbear_chachapoly - 24 +24
gen_new_keys 848 854 +6
------------------------------------------------------------------------------
(add/remove: 14/0 grow/shrink: 10/0 up/down: 5388/0) Total: 5388 bytes
* Add AES128-GCM and AES256-GCM authenticated encryption
* Add general AES-GCM mode.
* Add aes128-gcm@openssh.com and aes256-gcm@openssh.com algo using
LibTomCrypt gcm routines.
AES-GCM is combination of AES CTR mode and GHASH, slower than AES-CTR on
CPU w/o dedicated AES/GHASH instructions therefore disabled by default.
Compiling in will add ~6kB to binary size on x86-64.
function old new delta
gcm_process - 1060 +1060
.rodata 26976 27808 +832
gcm_gf_mult - 820 +820
gcm_add_aad - 660 +660
gcm_shift_table - 512 +512
gcm_done - 471 +471
gcm_add_iv - 384 +384
gcm_init - 347 +347
dropbear_gcm_crypt - 309 +309
encrypt_packet 1068 1270 +202
decrypt_packet 756 897 +141
gcm_reset - 118 +118
read_packet 543 637 +94
read_kex_algos 792 880 +88
sshciphers 280 360 +80
gcm_mult_h - 80 +80
dropbear_gcm_start - 62 +62
dropbear_mode_gcm - 48 +48
dropbear_mode_none 24 48 +24
dropbear_mode_ctr 24 48 +24
dropbear_mode_cbc 24 48 +24
dropbear_ghash - 24 +24
dropbear_gcm_getlength - 24 +24
gen_new_keys 848 854 +6
------------------------------------------------------------------------------
(add/remove: 14/0 grow/shrink: 10/0 up/down: 6434/0) Total: 6434 bytes
2020-05-25 23:50:25 +08:00
zciendor
002b79e2f9
MOTD enabled by default as the manpage says ( #87 )
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The man page (https://github.com/mkj/dropbear/blob/master/dropbear.8 ) says MOTD will be printed by default for any login shell, but it was disabled at compile time. Probably happened by accident when this code was moved from `options.h` to `default_options.h`.
2020-03-14 22:21:01 +08:00
Vladislav Grishenko
3d12521735
Add Ed25519 support ( #91 )
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* Add support for Ed25519 as a public key type
Ed25519 is a elliptic curve signature scheme that offers
better security than ECDSA and DSA and good performance. It may be
used for both user and host keys.
OpenSSH key import and fuzzer are not supported yet.
Initially inspired by Peter Szabo.
* Add curve25519 and ed25519 fuzzers
* Add import and export of Ed25519 keys
2020-03-12 00:09:45 +08:00
Matt Johnston
0afcfafbb9
Add a sanity check for DROPBEAR_SVR_MULTIUSER==0 mode
2019-03-20 22:57:06 +08:00
Patrick Stewart
0af22aa8e4
Support servers without multiple user support ( #76 )
2019-03-20 22:44:49 +08:00
Matt Johnston
8062a4e8d6
mention localoptions.h being build directory, fix underscore in CHANGES
2018-03-01 22:12:30 +08:00
Matt Johnston
3996e93a20
make group1 client-only
2018-02-26 22:42:53 +08:00
Matt Johnston
4aa72b96c1
disable group1 in default config
2018-02-26 22:14:11 +08:00
Matt Johnston
3f3f399231
- Fix dependencies and remove old default_options.h from version control
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- Rename default_options.h.in -> default_options.h, and
default_options.h -> default_options_guard.h
- Fix newlines in default_options.h
2018-02-19 22:16:50 +08:00
Matt Johnston
8fdaf0268d
missed regenerating
2018-02-18 23:48:24 +08:00
Matt Johnston
c2f2f2b817
rename some options and move some to sysoptions.h
2018-02-18 00:29:17 +08:00
Matt Johnston
84d415fb66
update default_options.h
2018-02-14 00:17:22 +08:00
Matt Johnston
74ace058a6
Use MAX_AUTH_TRIES rather than DEFAULT_AUTH_TRIES, don't limit argument range
2017-06-27 22:20:38 +08:00
Kevin Darbyshire-Bryant
e255101299
dropbear server: support -T max auth tries
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Add support for '-T n' for a run-time specification for maximum number
of authentication attempts where 'n' is between 1 and compile time
option MAX_AUTH_TRIES.
A default number of tries can be specified at compile time using
'DEFAULT_AUTH_TRIES' which itself defaults to MAX_AUTH_TRIES for
backwards compatibility.
Signed-off-by: Kevin Darbyshire-Bryant <kevin@darbyshire-bryant.me.uk>
2017-06-25 11:53:58 +01:00
Matt Johnston
a94338dc67
add configuration option for default RSA size.
...
print key size with dropbearkey
2017-06-24 23:32:25 +08:00
Matt Johnston
8c7ebc02a0
Add generated header default_options.h to version control.
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This is a workaround since I cannot figure how to get dependencies
to work properly with "make -j"
2016-05-04 17:59:34 +02:00
