Mercurial > dropbear
view dbmulti.c @ 1672:3a97f14c0235
Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
* Add Chacha20-Poly1305 authenticated encryption
* Add general AEAD approach.
* Add [email protected] 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 [email protected] and [email protected] 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
author | Vladislav Grishenko <themiron@users.noreply.github.com> |
---|---|
date | Mon, 25 May 2020 20:50:25 +0500 |
parents | 11f645c3715b |
children | 0dcc5b0d93fa |
line wrap: on
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/* * Dropbear SSH * * Copyright (c) 2002,2003 Matt Johnston * All rights reserved. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #include "includes.h" /* definitions are cleanest if we just put them here */ int dropbear_main(int argc, char ** argv); int cli_main(int argc, char ** argv); int dropbearkey_main(int argc, char ** argv); int dropbearconvert_main(int argc, char ** argv); int scp_main(int argc, char ** argv); static int runprog(const char *progname, int argc, char ** argv, int *match) { *match = DROPBEAR_SUCCESS; #ifdef DBMULTI_dropbear if (strcmp(progname, "dropbear") == 0) { return dropbear_main(argc, argv); } #endif #ifdef DBMULTI_dbclient if (strcmp(progname, "dbclient") == 0 || strcmp(progname, "ssh") == 0) { return cli_main(argc, argv); } #endif #ifdef DBMULTI_dropbearkey if (strcmp(progname, "dropbearkey") == 0) { return dropbearkey_main(argc, argv); } #endif #ifdef DBMULTI_dropbearconvert if (strcmp(progname, "dropbearconvert") == 0) { return dropbearconvert_main(argc, argv); } #endif #ifdef DBMULTI_scp if (strcmp(progname, "scp") == 0) { return scp_main(argc, argv); } #endif *match = DROPBEAR_FAILURE; return 1; } int main(int argc, char ** argv) { int i; for (i = 0; i < 2; i++) { /* Try symlink first, then try as an argument eg "dropbearmulti dbclient host ..." */ if (argc > i) { int match, res; /* figure which form we're being called as */ const char* progname = basename(argv[i]); res = runprog(progname, argc-i, &argv[i], &match); if (match == DROPBEAR_SUCCESS) { return res; } } } fprintf(stderr, "Dropbear SSH multi-purpose v%s\n" "Make a symlink pointing at this binary with one of the\n" "following names or run 'dropbearmulti <command>'.\n" #ifdef DBMULTI_dropbear "'dropbear' - the Dropbear server\n" #endif #ifdef DBMULTI_dbclient "'dbclient' or 'ssh' - the Dropbear client\n" #endif #ifdef DBMULTI_dropbearkey "'dropbearkey' - the key generator\n" #endif #ifdef DBMULTI_dropbearconvert "'dropbearconvert' - the key converter\n" #endif #ifdef DBMULTI_scp "'scp' - secure copy\n" #endif , DROPBEAR_VERSION); exit(1); }