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/* $OpenBSD: ip_esp.h,v 1.7 1997/06/25 07:53:24 provos Exp $ */
/*
* The author of this code is John Ioannidis, ji@tla.org,
* (except when noted otherwise).
*
* This code was written for BSD/OS in Athens, Greece, in November 1995.
*
* Ported to OpenBSD and NetBSD, with additional transforms, in December 1996,
* by Angelos D. Keromytis, kermit@forthnet.gr.
*
* Copyright (C) 1995, 1996, 1997 by John Ioannidis and Angelos D. Keromytis.
*
* Permission to use, copy, and modify this software without fee
* is hereby granted, provided that this entire notice is included in
* all copies of any software which is or includes a copy or
* modification of this software.
*
* THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTY. IN PARTICULAR, NEITHER AUTHOR MAKES ANY
* REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
* MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
* PURPOSE.
*/
/*
* Encapsulation Security Payload Processing
* Per RFC1827 (Atkinson, 1995)
*/
#ifndef _MD5_H_
#include <sys/md5k.h>
#endif
#define ESPDESMD5_KEYSZ 64
#define ESPDESMD5_IVS 8
#define ESPDESMD5_ALEN 16
#define ESPDESMD5_IPAD_VAL 0x36
#define ESPDESMD5_OPAD_VAL 0x5C
#define ESPDESMD5_DESBLK 8
#define ESPDESMD5_RPLENGTH 4
#define ESPDESMD5_DPADI 0x5C
#define ESPDESMD5_DPADR 0x3A
#define ESPDESMD5_IPADI 0xAC
#define ESPDESMD5_IPADR 0x55
#define ESPDESMD5_HPADI 0x53
#define ESPDESMD5_HPADR 0x3C
#define ESPDESMD5_RPADI 0x35
#define ESPDESMD5_RPADR 0xCC
#define ESP3DESMD5_KEYSZ 64
#define ESP3DESMD5_IVS 8
#define ESP3DESMD5_ALEN 16
#define ESP3DESMD5_IPAD_VAL 0x36
#define ESP3DESMD5_OPAD_VAL 0x5C
#define ESP3DESMD5_DESBLK 8
#define ESP3DESMD5_RPLENGTH 4
#define ESP3DESMD5_DPADI 0x5C
#define ESP3DESMD5_DPADR 0x3A
#define ESP3DESMD5_IPADI 0xAC
#define ESP3DESMD5_IPADR 0x55
#define ESP3DESMD5_HPADI 0x53
#define ESP3DESMD5_HPADR 0x3C
#define ESP3DESMD5_RPADI 0x35
#define ESP3DESMD5_RPADR 0xCC
struct esp
{
u_int32_t esp_spi; /* Security Parameters Index */
u_int8_t esp_iv[8]; /* iv[4] may actually be data! */
};
struct espstat
{
u_int32_t esps_hdrops; /* packet shorter than header shows */
u_int32_t esps_notdb;
u_int32_t esps_badkcr;
u_int32_t esps_qfull;
u_int32_t esps_noxform;
u_int32_t esps_badilen;
u_int32_t esps_wrap; /* Replay counter wrapped around */
u_int32_t esps_badauth; /* Only valid for transforms with auth */
u_int32_t esps_replay; /* Possible packet replay detected */
u_int32_t esps_input; /* Input ESP packets */
u_int32_t esps_output; /* Output ESP packets */
u_int32_t esps_invalid; /* Trying to use an invalid TDB */
};
struct espdes_xdata
{
int32_t edx_ivlen; /* 4 or 8 */
union
{
u_int8_t Iv[8]; /* that's enough space */
u_int32_t Ivl; /* make sure this is 4 bytes */
u_int64_t Ivq; /* make sure this is 8 bytes! */
}Iu;
#define edx_iv Iu.Iv
#define edx_ivl Iu.Ivl
#define edx_ivq Iu.Ivq
union
{
u_int8_t Rk[8];
u_int32_t Eks[16][2];
}Xu;
#define edx_rk Xu.Rk
#define edx_eks Xu.Eks
};
struct esp3des_xdata
{
int32_t edx_ivlen; /* 4 or 8 */
union
{
u_int8_t Iv[8]; /* that's enough space */
u_int32_t Ivl; /* make sure this is 4 bytes */
u_int64_t Ivq; /* make sure this is 8 bytes! */
}Iu;
#define edx_iv Iu.Iv
#define edx_ivl Iu.Ivl
#define edx_ivq Iu.Ivq
union
{
u_int8_t Rk[3][8];
u_int32_t Eks[3][16][2];
}Xu;
#define edx_rk Xu.Rk
#define edx_eks Xu.Eks
};
struct esp3desmd5_xencap
{
int8_t edx_ivlen; /* 0 or 8 */
int8_t edx_initiator; /* 1 if setting an I key */
u_int16_t edx_keylen;
u_int32_t edx_wnd;
u_int8_t edx_ivv[ESP3DESMD5_IVS];
u_int8_t edx_key[ESP3DESMD5_KEYSZ];
};
struct espdesmd5_xencap
{
int8_t edx_ivlen; /* 0 or 8 */
int8_t edx_initiator; /* 1 if setting an I key */
u_int16_t edx_keylen;
u_int32_t edx_wnd;
u_int8_t edx_ivv[ESPDESMD5_IVS];
u_int8_t edx_key[ESPDESMD5_KEYSZ];
};
#define ESPDESMD5_ULENGTH 8+ESPDESMD5_IVS+ESPDESMD5_KEYSZ
#define ESP3DESMD5_ULENGTH 8+ESP3DESMD5_IVS+ESP3DESMD5_KEYSZ
struct espdesmd5_xdata
{
int32_t edx_ivlen; /* 0 or 8 */
u_int32_t edx_rpl; /* Replay counter */
u_int32_t edx_wnd; /* Replay window */
u_int32_t edx_bitmap;
u_int32_t edx_initial; /* initial replay value */
union
{
u_int8_t Iv[8]; /* that's enough space */
u_int32_t Ivl; /* make sure this is 4 bytes */
u_int64_t Ivq; /* make sure this is 8 bytes! */
}Iu;
union
{
u_int8_t Rk[8];
u_int32_t Eks[16][2];
}Xu;
MD5_CTX edx_ictx;
MD5_CTX edx_octx;
};
struct esp3desmd5_xdata
{
int32_t edx_ivlen; /* 0 or 4 or 8 */
u_int32_t edx_rpl; /* Replay counter */
u_int32_t edx_wnd; /* Replay window */
u_int32_t edx_bitmap;
u_int32_t edx_initial;
union
{
u_int8_t Iv[8]; /* that's enough space */
u_int32_t Ivl; /* make sure this is 4 bytes */
u_int64_t Ivq; /* make sure this is 8 bytes! */
}Iu;
union
{
u_int8_t Rk[3][8];
u_int32_t Eks[3][16][2];
}Xu;
MD5_CTX edx_ictx;
MD5_CTX edx_octx;
};
#define ESP_FLENGTH 12
#define ESP_ULENGTH 20 /* coming from user mode */
#ifdef _KERNEL
struct espstat espstat;
#endif
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