dropbear: gcm.h annotate

annotate gcm.h @ 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
children

rev	line source
1672 3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	1 /*
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	2 * Dropbear SSH
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	3 *
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	4 * Copyright (c) 2002,2003 Matt Johnston
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	5 * Copyright (c) 2020 by Vladislav Grishenko
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	6 * All rights reserved.
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	7 *
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	8 * Permission is hereby granted, free of charge, to any person obtaining a copy
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	9 * of this software and associated documentation files (the "Software"), to deal
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	10 * in the Software without restriction, including without limitation the rights
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	12 * copies of the Software, and to permit persons to whom the Software is
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	13 * furnished to do so, subject to the following conditions:
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	14 *
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	15 * The above copyright notice and this permission notice shall be included in
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	16 * all copies or substantial portions of the Software.
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	17 *
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	21 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	24 * SOFTWARE. */
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	25
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	26 #ifndef DROPBEAR_DROPBEAR_GCM_H_
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	27 #define DROPBEAR_DROPBEAR_GCM_H_
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	28
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	29 #include "includes.h"
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	30 #include "algo.h"
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	31
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	32 #if DROPBEAR_ENABLE_GCM_MODE
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	33
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	34 #define GCM_IVFIX_LEN 4
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	35 #define GCM_IVCTR_LEN 8
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	36 #define GCM_NONCE_LEN (GCM_IVFIX_LEN + GCM_IVCTR_LEN)
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	37
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	38 typedef struct {
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	39 gcm_state gcm;
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	40 unsigned char iv[GCM_NONCE_LEN];
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	41 } dropbear_gcm_state;
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	42
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	43 extern const struct dropbear_cipher_mode dropbear_mode_gcm;
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	44
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	45 #endif /* DROPBEAR_ENABLE_GCM_MODE */
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	46
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	47 #endif /* DROPBEAR_DROPBEAR_GCM_H_ */

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annotate gcm.h @ 1672:3a97f14c0235