1 /* $OpenBSD: deattack.h,v 1.11 2015/01/19 19:52:16 markus Exp $ */
2 
3 /*
4  * Cryptographic attack detector for ssh - Header file
5  *
6  * Copyright (c) 1998 CORE SDI S.A., Buenos Aires, Argentina.
7  *
8  * All rights reserved. Redistribution and use in source and binary
9  * forms, with or without modification, are permitted provided that
10  * this copyright notice is retained.
11  *
12  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
13  * WARRANTIES ARE DISCLAIMED. IN NO EVENT SHALL CORE SDI S.A. BE
14  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY OR
15  * CONSEQUENTIAL DAMAGES RESULTING FROM THE USE OR MISUSE OF THIS
16  * SOFTWARE.
17  *
18  * Ariel Futoransky <futo@core-sdi.com>
19  * <http://www.core-sdi.com>
20  */
21 
22 #ifndef _DEATTACK_H
23 #define _DEATTACK_H
24 
25 /* Return codes */
26 #define DEATTACK_OK		0
27 #define DEATTACK_DETECTED	1
28 #define DEATTACK_DOS_DETECTED	2
29 #define DEATTACK_ERROR		3
30 
31 struct deattack_ctx {
32 	u_int16_t *h;
33 	u_int32_t n;
34 };
35 
36 void	 deattack_init(struct deattack_ctx *);
37 int	 detect_attack(struct deattack_ctx *, const u_char *, u_int32_t);
38 #endif
39