dee3aa83d1
This removes support for using DES, Triple DES, and RC4. Reviewed by: cem, kp Tested by: kp Sponsored by: Chelsio Communications Differential Revision: https://reviews.freebsd.org/D24344
153 lines
4.9 KiB
C
153 lines
4.9 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2008 Isilon Inc http://www.isilon.com/
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* Authors: Doug Rabson <dfr@rabson.org>
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* Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/_iovec.h>
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#define ETYPE_NULL 0
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#define ETYPE_DES_CBC_CRC 1
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#define ETYPE_DES_CBC_MD4 2
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#define ETYPE_DES_CBC_MD5 3
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#define ETYPE_DES3_CBC_MD5 5
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#define ETYPE_OLD_DES3_CBC_SHA1 7
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#define ETYPE_DES3_CBC_SHA1 16
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#define ETYPE_AES128_CTS_HMAC_SHA1_96 17
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#define ETYPE_AES256_CTS_HMAC_SHA1_96 18
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#define ETYPE_ARCFOUR_HMAC_MD5 23
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#define ETYPE_ARCFOUR_HMAC_MD5_56 24
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/*
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* Key usages for des3-cbc-sha1 tokens
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*/
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#define KG_USAGE_SEAL 22
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#define KG_USAGE_SIGN 23
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#define KG_USAGE_SEQ 24
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/*
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* Key usages for RFC4121 tokens
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*/
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#define KG_USAGE_ACCEPTOR_SEAL 22
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#define KG_USAGE_ACCEPTOR_SIGN 23
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#define KG_USAGE_INITIATOR_SEAL 24
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#define KG_USAGE_INITIATOR_SIGN 25
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struct krb5_key_state;
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typedef void init_func(struct krb5_key_state *ks);
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typedef void destroy_func(struct krb5_key_state *ks);
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typedef void set_key_func(struct krb5_key_state *ks, const void *in);
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typedef void random_to_key_func(struct krb5_key_state *ks, const void *in);
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typedef void encrypt_func(const struct krb5_key_state *ks,
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struct mbuf *inout, size_t skip, size_t len, void *ivec, size_t ivlen);
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typedef void checksum_func(const struct krb5_key_state *ks, int usage,
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struct mbuf *inout, size_t skip, size_t inlen, size_t outlen);
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struct krb5_encryption_class {
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const char *ec_name;
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int ec_type;
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int ec_flags;
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#define EC_DERIVED_KEYS 1
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size_t ec_blocklen;
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size_t ec_msgblocklen;
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size_t ec_checksumlen;
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size_t ec_keybits; /* key length in bits */
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size_t ec_keylen; /* size of key in memory */
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init_func *ec_init;
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destroy_func *ec_destroy;
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set_key_func *ec_set_key;
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random_to_key_func *ec_random_to_key;
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encrypt_func *ec_encrypt;
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encrypt_func *ec_decrypt;
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checksum_func *ec_checksum;
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};
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struct krb5_key_state {
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const struct krb5_encryption_class *ks_class;
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volatile u_int ks_refs;
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void *ks_key;
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void *ks_priv;
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};
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extern struct krb5_encryption_class krb5_aes128_encryption_class;
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extern struct krb5_encryption_class krb5_aes256_encryption_class;
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static __inline void
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krb5_set_key(struct krb5_key_state *ks, const void *keydata)
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{
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ks->ks_class->ec_set_key(ks, keydata);
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}
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static __inline void
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krb5_random_to_key(struct krb5_key_state *ks, const void *keydata)
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{
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ks->ks_class->ec_random_to_key(ks, keydata);
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}
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static __inline void
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krb5_encrypt(const struct krb5_key_state *ks, struct mbuf *inout,
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size_t skip, size_t len, void *ivec, size_t ivlen)
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{
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ks->ks_class->ec_encrypt(ks, inout, skip, len, ivec, ivlen);
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}
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static __inline void
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krb5_decrypt(const struct krb5_key_state *ks, struct mbuf *inout,
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size_t skip, size_t len, void *ivec, size_t ivlen)
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{
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ks->ks_class->ec_decrypt(ks, inout, skip, len, ivec, ivlen);
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}
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static __inline void
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krb5_checksum(const struct krb5_key_state *ks, int usage,
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struct mbuf *inout, size_t skip, size_t inlen, size_t outlen)
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{
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ks->ks_class->ec_checksum(ks, usage, inout, skip, inlen, outlen);
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}
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extern struct krb5_encryption_class *
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krb5_find_encryption_class(int etype);
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extern struct krb5_key_state *
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krb5_create_key(const struct krb5_encryption_class *ec);
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extern void krb5_free_key(struct krb5_key_state *ks);
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extern struct krb5_key_state *
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krb5_derive_key(struct krb5_key_state *inkey,
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void *constant, size_t constantlen);
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extern struct krb5_key_state *
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krb5_get_encryption_key(struct krb5_key_state *basekey, int usage);
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extern struct krb5_key_state *
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krb5_get_integrity_key(struct krb5_key_state *basekey, int usage);
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extern struct krb5_key_state *
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krb5_get_checksum_key(struct krb5_key_state *basekey, int usage);
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