Mercurial > dropbear

annotate gened25519.c @ 1715:3974f087d9c0

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Disallow leading lines before the ident for server (#102) Per RFC4253 4.2 clients must be able to process other lines of data before the version string, server behavior is not defined neither with MUST/SHOULD nor with MAY. If server process up to 50 lines too - it may cause too long hanging session with invalid/evil client that consume host resources and potentially may lead to DDoS on poor embedded boxes. Let's require first line from client to be version string and fail early if it's not - matches both RFC and real OpenSSH behavior.
author Vladislav Grishenko <themiron@users.noreply.github.com>
date Mon, 15 Jun 2020 18:22:18 +0500
parents d32bcb5c557d
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1659
d32bcb5c557d Add Ed25519 support (#91)
Vladislav Grishenko <themiron@users.noreply.github.com>
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1 /*
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Vladislav Grishenko <themiron@users.noreply.github.com>
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2 * Dropbear - a SSH2 server
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3 *
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4 * Copyright (c) 2002,2003 Matt Johnston
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5 * All rights reserved.
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6 *
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7 * Permission is hereby granted, free of charge, to any person obtaining a copy
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Vladislav Grishenko <themiron@users.noreply.github.com>
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8 * of this software and associated documentation files (the "Software"), to deal
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Vladislav Grishenko <themiron@users.noreply.github.com>
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9 * in the Software without restriction, including without limitation the rights
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Vladislav Grishenko <themiron@users.noreply.github.com>
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10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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Vladislav Grishenko <themiron@users.noreply.github.com>
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11 * copies of the Software, and to permit persons to whom the Software is
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12 * furnished to do so, subject to the following conditions:
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13 *
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14 * The above copyright notice and this permission notice shall be included in
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15 * all copies or substantial portions of the Software.
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16 *
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17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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Vladislav Grishenko <themiron@users.noreply.github.com>
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19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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Vladislav Grishenko <themiron@users.noreply.github.com>
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20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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Vladislav Grishenko <themiron@users.noreply.github.com>
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21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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23 * SOFTWARE. */
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24
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25 #include "includes.h"
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26 #include "dbutil.h"
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27 #include "dbrandom.h"
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28 #include "curve25519.h"
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29 #include "gened25519.h"
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30
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31 #if DROPBEAR_ED25519
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32
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33 dropbear_ed25519_key * gen_ed25519_priv_key(unsigned int size) {
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34
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35 dropbear_ed25519_key *key;
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36
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37 if (size != 256) {
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38 dropbear_exit("Ed25519 keys have a fixed size of 256 bits");
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39 }
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40
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41 key = m_malloc(sizeof(*key));
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42 dropbear_ed25519_make_key(key->pub, key->priv);
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43
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44 return key;
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45 }
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46
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47 #endif /* DROPBEAR_ED25519 */