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.
167 lines
4.5 KiB
C
167 lines
4.5 KiB
C
/*
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* Copyright (c) 2005 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 KTH nor the names of its contributors may be
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* used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY KTH AND ITS CONTRIBUTORS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KTH OR ITS CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
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#include "krb5_locl.h"
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#include <err.h>
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#include <getarg.h>
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static void
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test_wrapping(krb5_context context,
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size_t min_size,
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size_t max_size,
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size_t step,
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krb5_enctype etype)
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{
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krb5_error_code ret;
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krb5_keyblock key;
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krb5_crypto crypto;
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krb5_data data;
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char *etype_name;
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void *buf;
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size_t size;
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ret = krb5_generate_random_keyblock(context, etype, &key);
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if (ret)
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krb5_err(context, 1, ret, "krb5_generate_random_keyblock");
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ret = krb5_enctype_to_string(context, etype, &etype_name);
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if (ret)
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krb5_err(context, 1, ret, "krb5_enctype_to_string");
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buf = malloc(max_size);
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if (buf == NULL)
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krb5_errx(context, 1, "out of memory");
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memset(buf, 0, max_size);
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ret = krb5_crypto_init(context, &key, 0, &crypto);
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if (ret)
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krb5_err(context, 1, ret, "krb5_crypto_init");
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for (size = min_size; size < max_size; size += step) {
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size_t wrapped_size;
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ret = krb5_encrypt(context, crypto, 0, buf, size, &data);
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if (ret)
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krb5_err(context, 1, ret, "encrypt size %lu using %s",
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(unsigned long)size, etype_name);
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wrapped_size = krb5_get_wrapped_length(context, crypto, size);
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if (wrapped_size != data.length)
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krb5_errx(context, 1, "calculated wrapped length %lu != "
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"real wrapped length %lu for data length %lu using "
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"enctype %s",
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(unsigned long)wrapped_size,
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(unsigned long)data.length,
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(unsigned long)size,
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etype_name);
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krb5_data_free(&data);
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}
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free(etype_name);
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free(buf);
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krb5_crypto_destroy(context, crypto);
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krb5_free_keyblock_contents(context, &key);
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}
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static int version_flag = 0;
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static int help_flag = 0;
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static struct getargs args[] = {
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{"version", 0, arg_flag, &version_flag,
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"print version", NULL },
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{"help", 0, arg_flag, &help_flag,
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NULL, NULL }
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};
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static void
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usage (int ret)
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{
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arg_printusage (args,
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sizeof(args)/sizeof(*args),
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NULL,
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"");
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exit (ret);
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}
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int
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main(int argc, char **argv)
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{
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krb5_context context;
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krb5_error_code ret;
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int i, optidx = 0;
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krb5_enctype enctypes[] = {
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#ifdef HEIM_WEAK_CRYPTO
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ETYPE_DES_CBC_CRC,
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ETYPE_DES_CBC_MD4,
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ETYPE_DES_CBC_MD5,
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#endif
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ETYPE_DES3_CBC_SHA1,
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ETYPE_ARCFOUR_HMAC_MD5,
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ETYPE_AES128_CTS_HMAC_SHA1_96,
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ETYPE_AES256_CTS_HMAC_SHA1_96
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};
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setprogname(argv[0]);
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if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
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usage(1);
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if (help_flag)
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usage (0);
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if(version_flag){
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print_version(NULL);
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exit(0);
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}
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argc -= optidx;
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argv += optidx;
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ret = krb5_init_context(&context);
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if (ret)
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errx (1, "krb5_init_context failed: %d", ret);
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for (i = 0; i < sizeof(enctypes)/sizeof(enctypes[0]); i++) {
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krb5_enctype_enable(context, enctypes[i]);
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test_wrapping(context, 0, 1024, 1, enctypes[i]);
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test_wrapping(context, 1024, 1024 * 100, 1024, enctypes[i]);
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}
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krb5_free_context(context);
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return 0;
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}
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