Mercurial > dropbear

annotate algo.h @ 161:b9d3f725e00b

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0.44 release changes
author Matt Johnston <matt@ucc.asn.au>
date Sun, 02 Jan 2005 17:08:27 +0000
parents 0969767bca0d
children e972be139cb5
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1 /*
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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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8 * of this software and associated documentation files (the "Software"), to deal
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9 * in the Software without restriction, including without limitation the rights
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10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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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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19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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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 #ifndef _ALGO_H_
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27 #define _ALGO_H_
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29 #include "includes.h"
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30 #include "buffer.h"
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31
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32 struct Algo_Type {
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34 unsigned char *name; /* identifying name */
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35 char val; /* a value for this cipher, or -1 for invalid */
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36 void *data; /* algorithm specific data */
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37 unsigned usable : 1; /* whether we can use this algorithm */
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38
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39 };
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40
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41 typedef struct Algo_Type algo_type;
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42
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43 /* lists mapping ssh types of algorithms to internal values */
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44 extern algo_type sshkex[];
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45 extern algo_type sshhostkey[];
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46 extern algo_type sshciphers[];
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47 extern algo_type sshhashes[];
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48 extern algo_type sshcompress[];
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49
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50 extern const struct dropbear_cipher dropbear_nocipher;
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51 extern const struct dropbear_hash dropbear_nohash;
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52
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53 struct dropbear_cipher {
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54 const struct _cipher_descriptor *cipherdesc;
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55 unsigned long keysize;
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56 unsigned char blocksize;
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57 };
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58
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59 struct dropbear_hash {
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60 const struct _hash_descriptor *hashdesc;
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61 unsigned long keysize;
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62 unsigned char hashsize;
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63 };
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64
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65 void crypto_init();
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66 int have_algo(char* algo, size_t algolen, algo_type algos[]);
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67 void buf_put_algolist(buffer * buf, algo_type localalgos[]);
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68
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69 algo_type * svr_buf_match_algo(buffer* buf, algo_type localalgos[],
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70 int *goodguess);
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71 algo_type * cli_buf_match_algo(buffer* buf, algo_type localalgos[],
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72 int *goodguess);
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74 #endif /* _ALGO_H_ */