1*1031c584SApple OSS Distributions /* $FreeBSD: src/sys/netinet6/ah.h,v 1.3.2.2 2001/07/03 11:01:49 ume Exp $ */ 2*1031c584SApple OSS Distributions /* $KAME: ah.h,v 1.13 2000/10/18 21:28:00 itojun Exp $ */ 3*1031c584SApple OSS Distributions 4*1031c584SApple OSS Distributions /* 5*1031c584SApple OSS Distributions * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 6*1031c584SApple OSS Distributions * All rights reserved. 7*1031c584SApple OSS Distributions * 8*1031c584SApple OSS Distributions * Redistribution and use in source and binary forms, with or without 9*1031c584SApple OSS Distributions * modification, are permitted provided that the following conditions 10*1031c584SApple OSS Distributions * are met: 11*1031c584SApple OSS Distributions * 1. Redistributions of source code must retain the above copyright 12*1031c584SApple OSS Distributions * notice, this list of conditions and the following disclaimer. 13*1031c584SApple OSS Distributions * 2. Redistributions in binary form must reproduce the above copyright 14*1031c584SApple OSS Distributions * notice, this list of conditions and the following disclaimer in the 15*1031c584SApple OSS Distributions * documentation and/or other materials provided with the distribution. 16*1031c584SApple OSS Distributions * 3. Neither the name of the project nor the names of its contributors 17*1031c584SApple OSS Distributions * may be used to endorse or promote products derived from this software 18*1031c584SApple OSS Distributions * without specific prior written permission. 19*1031c584SApple OSS Distributions * 20*1031c584SApple OSS Distributions * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 21*1031c584SApple OSS Distributions * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22*1031c584SApple OSS Distributions * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23*1031c584SApple OSS Distributions * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 24*1031c584SApple OSS Distributions * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25*1031c584SApple OSS Distributions * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26*1031c584SApple OSS Distributions * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27*1031c584SApple OSS Distributions * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28*1031c584SApple OSS Distributions * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29*1031c584SApple OSS Distributions * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30*1031c584SApple OSS Distributions * SUCH DAMAGE. 31*1031c584SApple OSS Distributions */ 32*1031c584SApple OSS Distributions 33*1031c584SApple OSS Distributions /* 34*1031c584SApple OSS Distributions * RFC1826/2402 authentication header. 35*1031c584SApple OSS Distributions */ 36*1031c584SApple OSS Distributions 37*1031c584SApple OSS Distributions #ifndef _NETINET6_AH_H_ 38*1031c584SApple OSS Distributions #define _NETINET6_AH_H_ 39*1031c584SApple OSS Distributions #include <sys/appleapiopts.h> 40*1031c584SApple OSS Distributions 41*1031c584SApple OSS Distributions #include <sys/types.h> 42*1031c584SApple OSS Distributions 43*1031c584SApple OSS Distributions struct ah { 44*1031c584SApple OSS Distributions u_int8_t ah_nxt; /* Next Header */ 45*1031c584SApple OSS Distributions u_int8_t ah_len; /* Length of data, in 32bit */ 46*1031c584SApple OSS Distributions u_int16_t ah_reserve; /* Reserved for future use */ 47*1031c584SApple OSS Distributions u_int32_t ah_spi; /* Security parameter index */ 48*1031c584SApple OSS Distributions /* variable size, 32bit bound*/ /* Authentication data */ 49*1031c584SApple OSS Distributions }; 50*1031c584SApple OSS Distributions 51*1031c584SApple OSS Distributions struct newah { 52*1031c584SApple OSS Distributions u_int8_t ah_nxt; /* Next Header */ 53*1031c584SApple OSS Distributions u_int8_t ah_len; /* Length of data + 1, in 32bit */ 54*1031c584SApple OSS Distributions u_int16_t ah_reserve; /* Reserved for future use */ 55*1031c584SApple OSS Distributions u_int32_t ah_spi; /* Security parameter index */ 56*1031c584SApple OSS Distributions u_int32_t ah_seq; /* Sequence number field */ 57*1031c584SApple OSS Distributions /* variable size, 32bit bound*/ /* Authentication data */ 58*1031c584SApple OSS Distributions }; 59*1031c584SApple OSS Distributions 60*1031c584SApple OSS Distributions #ifdef BSD_KERNEL_PRIVATE 61*1031c584SApple OSS Distributions struct secasvar; 62*1031c584SApple OSS Distributions 63*1031c584SApple OSS Distributions struct ah_algorithm_state { 64*1031c584SApple OSS Distributions struct secasvar *sav; 65*1031c584SApple OSS Distributions void* foo; /*per algorithm data - maybe*/ 66*1031c584SApple OSS Distributions }; 67*1031c584SApple OSS Distributions 68*1031c584SApple OSS Distributions struct ah_algorithm { 69*1031c584SApple OSS Distributions int (*sumsiz)(struct secasvar *); 70*1031c584SApple OSS Distributions int (*mature)(struct secasvar *); 71*1031c584SApple OSS Distributions u_int16_t keymin; /* in bits */ 72*1031c584SApple OSS Distributions u_int16_t keymax; /* in bits */ 73*1031c584SApple OSS Distributions const char *name; 74*1031c584SApple OSS Distributions int (*init)(struct ah_algorithm_state *, struct secasvar *); 75*1031c584SApple OSS Distributions void (*update)(struct ah_algorithm_state *, caddr_t, size_t); 76*1031c584SApple OSS Distributions void (*result)(struct ah_algorithm_state *, caddr_t, size_t); 77*1031c584SApple OSS Distributions }; 78*1031c584SApple OSS Distributions 79*1031c584SApple OSS Distributions #define AH_MAXSUMSIZE 64 // sha2-512's output size 80*1031c584SApple OSS Distributions 81*1031c584SApple OSS Distributions extern const struct ah_algorithm *ah_algorithm_lookup(int); 82*1031c584SApple OSS Distributions 83*1031c584SApple OSS Distributions /* cksum routines */ 84*1031c584SApple OSS Distributions extern size_t ah_hdrlen(struct secasvar *); 85*1031c584SApple OSS Distributions 86*1031c584SApple OSS Distributions extern size_t ah_hdrsiz(struct ipsecrequest *); 87*1031c584SApple OSS Distributions extern void ah4_input(struct mbuf *, int); 88*1031c584SApple OSS Distributions extern int ah4_output(struct mbuf *, struct secasvar *); 89*1031c584SApple OSS Distributions extern int ah4_calccksum(struct mbuf *, caddr_t, size_t, 90*1031c584SApple OSS Distributions const struct ah_algorithm *, struct secasvar *); 91*1031c584SApple OSS Distributions #endif /* BSD_KERNEL_PRIVATE */ 92*1031c584SApple OSS Distributions 93*1031c584SApple OSS Distributions #endif /* _NETINET6_AH_H_ */ 94