e7e0b34988
several new kerberos related libraries and applications to FreeBSD:
o kgetcred(1) allows one to manually get a ticket for a particular service.
o kf(1) securily forwards ticket to another host through an authenticated
and encrypted stream.
o kcc(1) is an umbrella program around klist(1), kswitch(1), kgetcred(1)
and other user kerberos operations. klist and kswitch are just symlinks
to kcc(1) now.
o kswitch(1) allows you to easily switch between kerberos credentials if
you're running KCM.
o hxtool(1) is a certificate management tool to use with PKINIT.
o string2key(1) maps a password into key.
o kdigest(8) is a userland tool to access the KDC's digest interface.
o kimpersonate(8) creates a "fake" ticket for a service.
We also now install manpages for some lirbaries that were not installed
before, libheimntlm and libhx509.
- The new HEIMDAL version no longer supports Kerberos 4. All users are
recommended to switch to Kerberos 5.
- Weak ciphers are now disabled by default. To enable DES support (used
by telnet(8)), use "allow_weak_crypto" option in krb5.conf.
- libtelnet, pam_ksu and pam_krb5 are now compiled with error on warnings
disabled due to the function they use (krb5_get_err_text(3)) being
deprecated. I plan to work on this next.
- Heimdal's KDC now require sqlite to operate. We use the bundled version
and install it as libheimsqlite. If some other FreeBSD components will
require it in the future we can rename it to libbsdsqlite and use for these
components as well.
- This is not a latest Heimdal version, the new one was released while I was
working on the update. I will update it to 1.5.2 soon, as it fixes some
important bugs and security issues.
433 lines
11 KiB
C
433 lines
11 KiB
C
/*
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* Copyright (c) 2003 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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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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*
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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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*
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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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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE 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 INSTITUTE 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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#include "krb5_locl.h"
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#ifndef HEIMDAL_SMALLER
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/*
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* Glue for MIT API
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*/
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KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
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krb5_c_make_checksum(krb5_context context,
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krb5_cksumtype cksumtype,
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const krb5_keyblock *key,
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krb5_keyusage usage,
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const krb5_data *input,
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krb5_checksum *cksum)
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{
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krb5_error_code ret;
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krb5_crypto crypto;
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ret = krb5_crypto_init(context, key, 0, &crypto);
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if (ret)
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return ret;
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ret = krb5_create_checksum(context, crypto, usage, cksumtype,
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input->data, input->length, cksum);
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krb5_crypto_destroy(context, crypto);
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return ret ;
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}
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KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
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krb5_c_verify_checksum(krb5_context context, const krb5_keyblock *key,
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krb5_keyusage usage, const krb5_data *data,
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const krb5_checksum *cksum, krb5_boolean *valid)
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{
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krb5_error_code ret;
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krb5_checksum data_cksum;
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*valid = 0;
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ret = krb5_c_make_checksum(context, cksum->cksumtype,
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key, usage, data, &data_cksum);
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if (ret)
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return ret;
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if (data_cksum.cksumtype == cksum->cksumtype
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&& krb5_data_ct_cmp(&data_cksum.checksum, &cksum->checksum) == 0)
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*valid = 1;
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krb5_free_checksum_contents(context, &data_cksum);
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return 0;
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}
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KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
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krb5_c_get_checksum(krb5_context context, const krb5_checksum *cksum,
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krb5_cksumtype *type, krb5_data **data)
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{
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krb5_error_code ret;
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if (type)
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*type = cksum->cksumtype;
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if (data) {
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*data = malloc(sizeof(**data));
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if (*data == NULL)
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return ENOMEM;
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ret = der_copy_octet_string(&cksum->checksum, *data);
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if (ret) {
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free(*data);
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*data = NULL;
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return ret;
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}
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}
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return 0;
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}
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KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
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krb5_c_set_checksum(krb5_context context, krb5_checksum *cksum,
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krb5_cksumtype type, const krb5_data *data)
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{
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cksum->cksumtype = type;
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return der_copy_octet_string(data, &cksum->checksum);
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}
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KRB5_LIB_FUNCTION void KRB5_LIB_CALL
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krb5_free_checksum (krb5_context context, krb5_checksum *cksum)
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{
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krb5_checksum_free(context, cksum);
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free(cksum);
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}
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KRB5_LIB_FUNCTION void KRB5_LIB_CALL
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krb5_free_checksum_contents(krb5_context context, krb5_checksum *cksum)
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{
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krb5_checksum_free(context, cksum);
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memset(cksum, 0, sizeof(*cksum));
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}
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KRB5_LIB_FUNCTION void KRB5_LIB_CALL
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krb5_checksum_free(krb5_context context, krb5_checksum *cksum)
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{
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free_Checksum(cksum);
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}
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KRB5_LIB_FUNCTION krb5_boolean KRB5_LIB_CALL
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krb5_c_valid_enctype (krb5_enctype etype)
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{
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return !krb5_enctype_valid(NULL, etype);
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}
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KRB5_LIB_FUNCTION krb5_boolean KRB5_LIB_CALL
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krb5_c_valid_cksumtype(krb5_cksumtype ctype)
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{
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return krb5_cksumtype_valid(NULL, ctype);
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}
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KRB5_LIB_FUNCTION krb5_boolean KRB5_LIB_CALL
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krb5_c_is_coll_proof_cksum(krb5_cksumtype ctype)
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{
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return krb5_checksum_is_collision_proof(NULL, ctype);
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}
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KRB5_LIB_FUNCTION krb5_boolean KRB5_LIB_CALL
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krb5_c_is_keyed_cksum(krb5_cksumtype ctype)
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{
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return krb5_checksum_is_keyed(NULL, ctype);
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}
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KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
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krb5_copy_checksum (krb5_context context,
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const krb5_checksum *old,
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krb5_checksum **new)
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{
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*new = malloc(sizeof(**new));
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if (*new == NULL)
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return ENOMEM;
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return copy_Checksum(old, *new);
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}
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KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
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krb5_c_checksum_length (krb5_context context, krb5_cksumtype cksumtype,
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size_t *length)
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{
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return krb5_checksumsize(context, cksumtype, length);
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}
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KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
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krb5_c_block_size(krb5_context context,
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krb5_enctype enctype,
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size_t *blocksize)
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{
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krb5_error_code ret;
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krb5_crypto crypto;
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krb5_keyblock key;
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ret = krb5_generate_random_keyblock(context, enctype, &key);
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if (ret)
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return ret;
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ret = krb5_crypto_init(context, &key, 0, &crypto);
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krb5_free_keyblock_contents(context, &key);
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if (ret)
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return ret;
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ret = krb5_crypto_getblocksize(context, crypto, blocksize);
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krb5_crypto_destroy(context, crypto);
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return ret;
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}
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KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
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krb5_c_decrypt(krb5_context context,
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const krb5_keyblock key,
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krb5_keyusage usage,
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const krb5_data *ivec,
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krb5_enc_data *input,
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krb5_data *output)
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{
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krb5_error_code ret;
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krb5_crypto crypto;
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ret = krb5_crypto_init(context, &key, input->enctype, &crypto);
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if (ret)
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return ret;
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if (ivec) {
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size_t blocksize;
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ret = krb5_crypto_getblocksize(context, crypto, &blocksize);
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if (ret) {
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krb5_crypto_destroy(context, crypto);
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return ret;
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}
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if (blocksize > ivec->length) {
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krb5_crypto_destroy(context, crypto);
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return KRB5_BAD_MSIZE;
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}
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}
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ret = krb5_decrypt_ivec(context, crypto, usage,
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input->ciphertext.data, input->ciphertext.length,
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output,
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ivec ? ivec->data : NULL);
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krb5_crypto_destroy(context, crypto);
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return ret ;
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}
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KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
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krb5_c_encrypt(krb5_context context,
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const krb5_keyblock *key,
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krb5_keyusage usage,
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const krb5_data *ivec,
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const krb5_data *input,
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krb5_enc_data *output)
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{
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krb5_error_code ret;
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krb5_crypto crypto;
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ret = krb5_crypto_init(context, key, 0, &crypto);
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if (ret)
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return ret;
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if (ivec) {
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size_t blocksize;
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ret = krb5_crypto_getblocksize(context, crypto, &blocksize);
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if (ret) {
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krb5_crypto_destroy(context, crypto);
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return ret;
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}
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if (blocksize > ivec->length) {
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krb5_crypto_destroy(context, crypto);
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return KRB5_BAD_MSIZE;
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}
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}
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ret = krb5_encrypt_ivec(context, crypto, usage,
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input->data, input->length,
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&output->ciphertext,
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ivec ? ivec->data : NULL);
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output->kvno = 0;
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krb5_crypto_getenctype(context, crypto, &output->enctype);
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krb5_crypto_destroy(context, crypto);
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return ret ;
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}
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KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
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krb5_c_encrypt_length(krb5_context context,
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krb5_enctype enctype,
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size_t inputlen,
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size_t *length)
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{
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krb5_error_code ret;
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krb5_crypto crypto;
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krb5_keyblock key;
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ret = krb5_generate_random_keyblock(context, enctype, &key);
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if (ret)
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return ret;
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ret = krb5_crypto_init(context, &key, 0, &crypto);
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krb5_free_keyblock_contents(context, &key);
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if (ret)
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return ret;
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*length = krb5_get_wrapped_length(context, crypto, inputlen);
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krb5_crypto_destroy(context, crypto);
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return 0;
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}
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/**
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* Deprecated: keytypes doesn't exists, they are really enctypes.
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*
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* @ingroup krb5_deprecated
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*/
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KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
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krb5_c_enctype_compare(krb5_context context,
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krb5_enctype e1,
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krb5_enctype e2,
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krb5_boolean *similar)
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KRB5_DEPRECATED_FUNCTION("Use X instead")
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{
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*similar = (e1 == e2);
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return 0;
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}
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KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
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krb5_c_make_random_key(krb5_context context,
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krb5_enctype enctype,
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krb5_keyblock *random_key)
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{
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return krb5_generate_random_keyblock(context, enctype, random_key);
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}
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KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
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krb5_c_keylengths(krb5_context context,
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krb5_enctype enctype,
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size_t *ilen,
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size_t *keylen)
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{
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krb5_error_code ret;
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ret = krb5_enctype_keybits(context, enctype, ilen);
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if (ret)
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return ret;
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*ilen = (*ilen + 7) / 8;
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return krb5_enctype_keysize(context, enctype, keylen);
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}
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KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
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krb5_c_prf_length(krb5_context context,
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krb5_enctype type,
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size_t *length)
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{
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return krb5_crypto_prf_length(context, type, length);
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}
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KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
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krb5_c_prf(krb5_context context,
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const krb5_keyblock *key,
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const krb5_data *input,
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krb5_data *output)
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{
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krb5_crypto crypto;
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krb5_error_code ret;
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ret = krb5_crypto_init(context, key, 0, &crypto);
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if (ret)
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return ret;
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ret = krb5_crypto_prf(context, crypto, input, output);
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krb5_crypto_destroy(context, crypto);
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return ret;
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}
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KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
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krb5_c_random_make_octets(krb5_context context, krb5_data * data)
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{
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return krb5_generate_random_keyblock(context, data->length, data->data);
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}
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/**
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* MIT compat glue
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*
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* @ingroup krb5_ccache
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*/
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KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
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krb5_cc_copy_creds(krb5_context context,
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const krb5_ccache from,
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krb5_ccache to)
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{
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return krb5_cc_copy_cache(context, from, to);
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}
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KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
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krb5_auth_con_getsendsubkey(krb5_context context, krb5_auth_context auth_context,
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krb5_keyblock **keyblock)
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{
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return krb5_auth_con_getlocalsubkey(context, auth_context, keyblock);
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}
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KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
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krb5_auth_con_getrecvsubkey(krb5_context context, krb5_auth_context auth_context,
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krb5_keyblock **keyblock)
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{
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return krb5_auth_con_getremotesubkey(context, auth_context, keyblock);
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}
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KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
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krb5_auth_con_setsendsubkey(krb5_context context, krb5_auth_context auth_context,
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krb5_keyblock *keyblock)
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{
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return krb5_auth_con_setlocalsubkey(context, auth_context, keyblock);
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}
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KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
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krb5_auth_con_setrecvsubkey(krb5_context context, krb5_auth_context auth_context,
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krb5_keyblock *keyblock)
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{
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return krb5_auth_con_setremotesubkey(context, auth_context, keyblock);
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}
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KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
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krb5_free_default_realm(krb5_context context, krb5_realm realm)
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{
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return krb5_xfree(realm);
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}
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#endif /* HEIMDAL_SMALLER */
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