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Diffstat (limited to 'sys/netinet6/ah.h')
| -rw-r--r-- | sys/netinet6/ah.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/sys/netinet6/ah.h b/sys/netinet6/ah.h new file mode 100644 index 0000000..2786272 --- /dev/null +++ b/sys/netinet6/ah.h @@ -0,0 +1,88 @@ +/* + * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the project nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +/* + * RFC1826/2402 authentication header. + */ + +#ifndef _NETINET6_AH_H_ +#define _NETINET6_AH_H_ + +struct secasvar; + +struct ah { + u_int8_t ah_nxt; /* Next Header */ + u_int8_t ah_len; /* Length of data, in 32bit */ + u_int16_t ah_reserve; /* Reserved for future use */ + u_int32_t ah_spi; /* Security parameter index */ + /* variable size, 32bit bound*/ /* Authentication data */ +}; + +struct newah { + u_int8_t ah_nxt; /* Next Header */ + u_int8_t ah_len; /* Length of data + 1, in 32bit */ + u_int16_t ah_reserve; /* Reserved for future use */ + u_int32_t ah_spi; /* Security parameter index */ + u_int32_t ah_seq; /* Sequence number field */ + /* variable size, 32bit bound*/ /* Authentication data */ +}; + +struct ah_algorithm_state { + struct secasvar *sav; + void* foo; /*per algorithm data - maybe*/ +}; + +struct ah_algorithm { + int (*sumsiz) __P((struct secasvar *)); + int (*mature) __P((struct secasvar *)); + int keymin; /* in bits */ + int keymax; /* in bits */ + void (*init) __P((struct ah_algorithm_state *, struct secasvar *)); + void (*update) __P((struct ah_algorithm_state *, caddr_t, size_t)); + void (*result) __P((struct ah_algorithm_state *, caddr_t)); +}; + +#define AH_MAXSUMSIZE 16 + +#ifdef KERNEL +extern struct ah_algorithm ah_algorithms[]; + +/* cksum routines */ +extern int ah_hdrlen __P((struct secasvar *)); + +extern size_t ah_hdrsiz __P((struct ipsecrequest *)); +extern void ah4_input __P((struct mbuf *, int, int)); +extern int ah4_output __P((struct mbuf *, struct ipsecrequest *)); +extern int ah4_calccksum __P((struct mbuf *, caddr_t, + struct ah_algorithm *, struct secasvar *)); +#endif /*KERNEL*/ + +#endif /*_NETINET6_AH_H_*/ |
