1*0f4c859eSApple OSS Distributions /* $FreeBSD: src/sys/netinet6/ah.h,v 1.3.2.2 2001/07/03 11:01:49 ume Exp $ */ 2*0f4c859eSApple OSS Distributions /* $KAME: ah.h,v 1.13 2000/10/18 21:28:00 itojun Exp $ */ 3*0f4c859eSApple OSS Distributions 4*0f4c859eSApple OSS Distributions /* 5*0f4c859eSApple OSS Distributions * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 6*0f4c859eSApple OSS Distributions * All rights reserved. 7*0f4c859eSApple OSS Distributions * 8*0f4c859eSApple OSS Distributions * Redistribution and use in source and binary forms, with or without 9*0f4c859eSApple OSS Distributions * modification, are permitted provided that the following conditions 10*0f4c859eSApple OSS Distributions * are met: 11*0f4c859eSApple OSS Distributions * 1. Redistributions of source code must retain the above copyright 12*0f4c859eSApple OSS Distributions * notice, this list of conditions and the following disclaimer. 13*0f4c859eSApple OSS Distributions * 2. Redistributions in binary form must reproduce the above copyright 14*0f4c859eSApple OSS Distributions * notice, this list of conditions and the following disclaimer in the 15*0f4c859eSApple OSS Distributions * documentation and/or other materials provided with the distribution. 16*0f4c859eSApple OSS Distributions * 3. Neither the name of the project nor the names of its contributors 17*0f4c859eSApple OSS Distributions * may be used to endorse or promote products derived from this software 18*0f4c859eSApple OSS Distributions * without specific prior written permission. 19*0f4c859eSApple OSS Distributions * 20*0f4c859eSApple OSS Distributions * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 21*0f4c859eSApple OSS Distributions * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22*0f4c859eSApple OSS Distributions * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23*0f4c859eSApple OSS Distributions * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 24*0f4c859eSApple OSS Distributions * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25*0f4c859eSApple OSS Distributions * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26*0f4c859eSApple OSS Distributions * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27*0f4c859eSApple OSS Distributions * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28*0f4c859eSApple OSS Distributions * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29*0f4c859eSApple OSS Distributions * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30*0f4c859eSApple OSS Distributions * SUCH DAMAGE. 31*0f4c859eSApple OSS Distributions */ 32*0f4c859eSApple OSS Distributions 33*0f4c859eSApple OSS Distributions /* 34*0f4c859eSApple OSS Distributions * RFC1826/2402 authentication header. 35*0f4c859eSApple OSS Distributions */ 36*0f4c859eSApple OSS Distributions 37*0f4c859eSApple OSS Distributions #ifndef _NETINET6_AH_H_ 38*0f4c859eSApple OSS Distributions #define _NETINET6_AH_H_ 39*0f4c859eSApple OSS Distributions #include <sys/appleapiopts.h> 40*0f4c859eSApple OSS Distributions 41*0f4c859eSApple OSS Distributions #include <sys/types.h> 42*0f4c859eSApple OSS Distributions 43*0f4c859eSApple OSS Distributions struct ah { 44*0f4c859eSApple OSS Distributions u_int8_t ah_nxt; /* Next Header */ 45*0f4c859eSApple OSS Distributions u_int8_t ah_len; /* Length of data, in 32bit */ 46*0f4c859eSApple OSS Distributions u_int16_t ah_reserve; /* Reserved for future use */ 47*0f4c859eSApple OSS Distributions u_int32_t ah_spi; /* Security parameter index */ 48*0f4c859eSApple OSS Distributions /* variable size, 32bit bound*/ /* Authentication data */ 49*0f4c859eSApple OSS Distributions }; 50*0f4c859eSApple OSS Distributions 51*0f4c859eSApple OSS Distributions struct newah { 52*0f4c859eSApple OSS Distributions u_int8_t ah_nxt; /* Next Header */ 53*0f4c859eSApple OSS Distributions u_int8_t ah_len; /* Length of data + 1, in 32bit */ 54*0f4c859eSApple OSS Distributions u_int16_t ah_reserve; /* Reserved for future use */ 55*0f4c859eSApple OSS Distributions u_int32_t ah_spi; /* Security parameter index */ 56*0f4c859eSApple OSS Distributions u_int32_t ah_seq; /* Sequence number field */ 57*0f4c859eSApple OSS Distributions /* variable size, 32bit bound*/ /* Authentication data */ 58*0f4c859eSApple OSS Distributions }; 59*0f4c859eSApple OSS Distributions 60*0f4c859eSApple OSS Distributions #ifdef BSD_KERNEL_PRIVATE 61*0f4c859eSApple OSS Distributions struct secasvar; 62*0f4c859eSApple OSS Distributions 63*0f4c859eSApple OSS Distributions struct ah_algorithm_state { 64*0f4c859eSApple OSS Distributions struct secasvar *sav; 65*0f4c859eSApple OSS Distributions void* foo; /*per algorithm data - maybe*/ 66*0f4c859eSApple OSS Distributions }; 67*0f4c859eSApple OSS Distributions 68*0f4c859eSApple OSS Distributions struct ah_algorithm { 69*0f4c859eSApple OSS Distributions int (*sumsiz)(struct secasvar *); 70*0f4c859eSApple OSS Distributions int (*mature)(struct secasvar *); 71*0f4c859eSApple OSS Distributions u_int16_t keymin; /* in bits */ 72*0f4c859eSApple OSS Distributions u_int16_t keymax; /* in bits */ 73*0f4c859eSApple OSS Distributions const char *name; 74*0f4c859eSApple OSS Distributions int (*init)(struct ah_algorithm_state *, struct secasvar *); 75*0f4c859eSApple OSS Distributions void (*update)(struct ah_algorithm_state *, caddr_t, size_t); 76*0f4c859eSApple OSS Distributions void (*result)(struct ah_algorithm_state *, caddr_t, size_t); 77*0f4c859eSApple OSS Distributions }; 78*0f4c859eSApple OSS Distributions 79*0f4c859eSApple OSS Distributions #define AH_MAXSUMSIZE 64 // sha2-512's output size 80*0f4c859eSApple OSS Distributions 81*0f4c859eSApple OSS Distributions extern const struct ah_algorithm *ah_algorithm_lookup(int); 82*0f4c859eSApple OSS Distributions 83*0f4c859eSApple OSS Distributions /* cksum routines */ 84*0f4c859eSApple OSS Distributions extern size_t ah_hdrlen(struct secasvar *); 85*0f4c859eSApple OSS Distributions 86*0f4c859eSApple OSS Distributions extern size_t ah_hdrsiz(struct ipsecrequest *); 87*0f4c859eSApple OSS Distributions extern void ah4_input(struct mbuf *, int); 88*0f4c859eSApple OSS Distributions extern int ah4_output(struct mbuf *, struct secasvar *); 89*0f4c859eSApple OSS Distributions extern int ah4_calccksum(struct mbuf *, caddr_t, size_t, 90*0f4c859eSApple OSS Distributions const struct ah_algorithm *, struct secasvar *); 91*0f4c859eSApple OSS Distributions #endif /* BSD_KERNEL_PRIVATE */ 92*0f4c859eSApple OSS Distributions 93*0f4c859eSApple OSS Distributions #endif /* _NETINET6_AH_H_ */ 94