Mercurial > dropbear

annotate gcm.c @ 1743:7d8462677355 fuzz

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Disallow extra kexinit messages
author Matt Johnston <matt@ucc.asn.au>
date Sun, 18 Oct 2020 22:17:54 +0800
parents 5b701bf529aa
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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 #include "includes.h"
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
27 #include "algo.h"
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
28 #include "dbutil.h"
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
29 #include "gcm.h"
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
30
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
31 #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
32
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
33 #define GHASH_LEN 16
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
34
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
35 static const struct dropbear_hash dropbear_ghash =
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
36 {NULL, 0, GHASH_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 static int dropbear_gcm_start(int cipher, const unsigned char *IV,
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
39 const unsigned char *key, int keylen,
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
40 int UNUSED(num_rounds), dropbear_gcm_state *state) {
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
41 int err;
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 TRACE2(("enter dropbear_gcm_start"))
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 if ((err = gcm_init(&state->gcm, cipher, key, keylen)) != CRYPT_OK) {
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
46 return err;
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
47 }
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
48 memcpy(state->iv, 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
49
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
50 TRACE2(("leave dropbear_gcm_start"))
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
51 return CRYPT_OK;
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
52 }
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
53
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
54 static int dropbear_gcm_crypt(unsigned int UNUSED(seq),
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
55 const unsigned char *in, unsigned char *out,
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
56 unsigned long len, unsigned long taglen,
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
57 dropbear_gcm_state *state, int direction) {
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
58 unsigned char *iv, tag[GHASH_LEN];
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
59 int i, err;
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
60
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
61 TRACE2(("enter dropbear_gcm_crypt"))
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
62
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
63 if (len < 4 || taglen != GHASH_LEN) {
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
64 return CRYPT_ERROR;
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
65 }
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
66
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
67 gcm_reset(&state->gcm);
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
68
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
69 if ((err = gcm_add_iv(&state->gcm,
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
70 state->iv, GCM_NONCE_LEN)) != CRYPT_OK) {
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
71 return err;
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
72 }
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
73
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
74 if ((err = gcm_add_aad(&state->gcm, in, 4)) != CRYPT_OK) {
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
75 return err;
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
76 }
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
77
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
78 if ((err = gcm_process(&state->gcm, (unsigned char *) in + 4,
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
79 len - 4, out + 4, direction)) != CRYPT_OK) {
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
80 return err;
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
81 }
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
82
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
83 if (direction == LTC_ENCRYPT) {
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
84 gcm_done(&state->gcm, out + len, &taglen);
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
85 } else {
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
86 gcm_done(&state->gcm, tag, &taglen);
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
87 if (constant_time_memcmp(in + len, tag, taglen) != 0) {
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
88 return CRYPT_ERROR;
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
89 }
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
90 }
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
91
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
92 /* increment invocation counter */
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
93 iv = state->iv + GCM_IVFIX_LEN;
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
94 for (i = GCM_IVCTR_LEN - 1; i >= 0 && ++iv[i] == 0; i--);
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
95
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
96 TRACE2(("leave dropbear_gcm_crypt"))
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
97 return CRYPT_OK;
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
98 }
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
99
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
100 static int dropbear_gcm_getlength(unsigned int UNUSED(seq),
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
101 const unsigned char *in, unsigned int *outlen,
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
102 unsigned long len, dropbear_gcm_state* UNUSED(state)) {
1705
5b701bf529aa Fix ChaCha20 on 32-bit platforms (#99)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents: 1672
diff changeset
103 TRACE2(("enter dropbear_gcm_getlength"))
1672
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
104
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
105 if (len < 4) {
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
106 return CRYPT_ERROR;
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
107 }
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
108
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
109 LOAD32H(*outlen, in);
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
110
1705
5b701bf529aa Fix ChaCha20 on 32-bit platforms (#99)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents: 1672
diff changeset
111 TRACE2(("leave dropbear_gcm_getlength"))
1672
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
112 return CRYPT_OK;
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
113 }
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
114
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
115 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
116 {(void *)dropbear_gcm_start, NULL, NULL,
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
117 (void *)dropbear_gcm_crypt,
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
118 (void *)dropbear_gcm_getlength, &dropbear_ghash};
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
119
3a97f14c0235 Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents:
diff changeset
120 #endif /* DROPBEAR_ENABLE_GCM_MODE */