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f6c4bc3b91
or SHA512, the blocksize is 128 bytes, not 64 bytes as anywhere else. The bug also exists in NetBSD, OpenBSD and various other independed implementations I look at. - We cannot decide which hash function to use for HMAC based on the key length, because any HMAC function can use any key length. To fix it split CRYPTO_SHA2_HMAC into three algorithm: CRYPTO_SHA2_256_HMAC, CRYPTO_SHA2_384_HMAC and CRYPTO_SHA2_512_HMAC. Those names are consistent with OpenBSD's naming. - Remove authsize field from auth_hash structure. - Allow consumer to define size of hash he wants to receive. This allows to use HMAC not only for IPsec, where 96 bits MAC is requested. The size of requested MAC is defined at newsession time in the cri_mlen field - when 0, entire MAC will be returned. - Add swcr_authprepare() function which prepares authentication key. - Allow to provide key for every authentication operation, not only at newsession time by honoring CRD_F_KEY_EXPLICIT flag. - Make giving key at newsession time optional - don't try to operate on it if its NULL. - Extend COPYBACK()/COPYDATA() macros to handle CRYPTO_BUF_CONTIG buffer type as well. - Accept CRYPTO_BUF_IOV buffer type in swcr_authcompute() as we have cuio_apply() now. - 16 bits for key length (SW_klen) is more than enough. Reviewed by: sam
102 lines
2.8 KiB
C
102 lines
2.8 KiB
C
/* $FreeBSD$ */
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/* $OpenBSD: xform.h,v 1.8 2001/08/28 12:20:43 ben Exp $ */
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/*-
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* The author of this code is Angelos D. Keromytis (angelos@cis.upenn.edu)
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*
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* This code was written by Angelos D. Keromytis in Athens, Greece, in
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* February 2000. Network Security Technologies Inc. (NSTI) kindly
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* supported the development of this code.
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*
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* Copyright (c) 2000 Angelos D. Keromytis
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*
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* Permission to use, copy, and modify this software without fee
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* is hereby granted, provided that this entire notice is included in
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* all source code copies of any software which is or includes a copy or
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* modification of this software.
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*
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* THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY
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* REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
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* MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
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* PURPOSE.
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*/
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#ifndef _CRYPTO_XFORM_H_
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#define _CRYPTO_XFORM_H_
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#include <sys/md5.h>
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#include <crypto/sha1.h>
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#include <crypto/sha2/sha2.h>
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#include <opencrypto/rmd160.h>
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/* Declarations */
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struct auth_hash {
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int type;
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char *name;
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u_int16_t keysize;
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u_int16_t hashsize;
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u_int16_t blocksize;
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u_int16_t ctxsize;
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void (*Init) (void *);
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int (*Update) (void *, u_int8_t *, u_int16_t);
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void (*Final) (u_int8_t *, void *);
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};
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#define AH_ALEN_MAX 20 /* max authenticator hash length */
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struct enc_xform {
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int type;
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char *name;
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u_int16_t blocksize;
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u_int16_t minkey, maxkey;
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void (*encrypt) (caddr_t, u_int8_t *);
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void (*decrypt) (caddr_t, u_int8_t *);
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int (*setkey) (u_int8_t **, u_int8_t *, int len);
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void (*zerokey) (u_int8_t **);
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};
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struct comp_algo {
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int type;
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char *name;
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size_t minlen;
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u_int32_t (*compress) (u_int8_t *, u_int32_t, u_int8_t **);
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u_int32_t (*decompress) (u_int8_t *, u_int32_t, u_int8_t **);
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};
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union authctx {
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MD5_CTX md5ctx;
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SHA1_CTX sha1ctx;
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RMD160_CTX rmd160ctx;
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SHA256_CTX sha256ctx;
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SHA384_CTX sha384ctx;
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SHA512_CTX sha512ctx;
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};
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extern struct enc_xform enc_xform_null;
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extern struct enc_xform enc_xform_des;
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extern struct enc_xform enc_xform_3des;
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extern struct enc_xform enc_xform_blf;
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extern struct enc_xform enc_xform_cast5;
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extern struct enc_xform enc_xform_skipjack;
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extern struct enc_xform enc_xform_rijndael128;
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extern struct enc_xform enc_xform_arc4;
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extern struct auth_hash auth_hash_null;
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extern struct auth_hash auth_hash_key_md5;
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extern struct auth_hash auth_hash_key_sha1;
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extern struct auth_hash auth_hash_hmac_md5;
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extern struct auth_hash auth_hash_hmac_sha1;
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extern struct auth_hash auth_hash_hmac_ripemd_160;
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extern struct auth_hash auth_hash_hmac_sha2_256;
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extern struct auth_hash auth_hash_hmac_sha2_384;
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extern struct auth_hash auth_hash_hmac_sha2_512;
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extern struct comp_algo comp_algo_deflate;
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#ifdef _KERNEL
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#include <sys/malloc.h>
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MALLOC_DECLARE(M_XDATA);
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#endif
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#endif /* _CRYPTO_XFORM_H_ */
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