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freebsd-dev/crypto/heimdal/kuser/kdigest.c
Stanislav Sedov ae77177087 - Update FreeBSD Heimdal distribution to version 1.5.1. This also brings 
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.
2012-03-22 08:48:42 +00:00

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/*
* Copyright (c) 2006 - 2007 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* 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 Institute 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 INSTITUTE 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 INSTITUTE 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.
*/
#define HC_DEPRECATED_CRYPTO
#include "kuser_locl.h"
#include <kdigest-commands.h>
#include <hex.h>
#include <base64.h>
#include <heimntlm.h>
#include "crypto-headers.h"
static int version_flag = 0;
static int help_flag = 0;
static char *ccache_string;
static krb5_ccache id;
static struct getargs args[] = {
{"ccache", 0, arg_string, &ccache_string, "credential cache", NULL },
{"version", 0, arg_flag, &version_flag, "print version", NULL },
{"help", 0, arg_flag, &help_flag, NULL, NULL }
};
static void
usage (int ret)
{
arg_printusage (args, sizeof(args)/sizeof(*args),
NULL, "");
exit (ret);
}
static krb5_context context;
int
digest_probe(struct digest_probe_options *opt,
int argc, char ** argv)
{
krb5_error_code ret;
krb5_realm realm;
unsigned flags;
realm = opt->realm_string;
if (realm == NULL)
errx(1, "realm missing");
ret = krb5_digest_probe(context, realm, id, &flags);
if (ret)
krb5_err(context, 1, ret, "digest_probe");
printf("flags: %u\n", flags);
return 0;
}
int
digest_server_init(struct digest_server_init_options *opt,
int argc, char ** argv)
{
krb5_error_code ret;
krb5_digest digest;
ret = krb5_digest_alloc(context, &digest);
if (ret)
krb5_err(context, 1, ret, "digest_alloc");
ret = krb5_digest_set_type(context, digest, opt->type_string);
if (ret)
krb5_err(context, 1, ret, "krb5_digest_set_type");
if (opt->cb_type_string && opt->cb_value_string) {
ret = krb5_digest_set_server_cb(context, digest,
opt->cb_type_string,
opt->cb_value_string);
if (ret)
krb5_err(context, 1, ret, "krb5_digest_set_server_cb");
}
ret = krb5_digest_init_request(context,
digest,
opt->kerberos_realm_string,
id);
if (ret)
krb5_err(context, 1, ret, "krb5_digest_init_request");
printf("type=%s\n", opt->type_string);
printf("server-nonce=%s\n",
krb5_digest_get_server_nonce(context, digest));
{
const char *s = krb5_digest_get_identifier(context, digest);
if (s)
printf("identifier=%s\n", s);
}
printf("opaque=%s\n", krb5_digest_get_opaque(context, digest));
krb5_digest_free(digest);
return 0;
}
int
digest_server_request(struct digest_server_request_options *opt,
int argc, char **argv)
{
krb5_error_code ret;
krb5_digest digest;
const char *status, *rsp;
krb5_data session_key;
if (opt->server_nonce_string == NULL)
errx(1, "server nonce missing");
if (opt->type_string == NULL)
errx(1, "type missing");
if (opt->opaque_string == NULL)
errx(1, "opaque missing");
if (opt->client_response_string == NULL)
errx(1, "client response missing");
ret = krb5_digest_alloc(context, &digest);
if (ret)
krb5_err(context, 1, ret, "digest_alloc");
if (strcasecmp(opt->type_string, "CHAP") == 0) {
if (opt->server_identifier_string == NULL)
errx(1, "server identifier missing");
ret = krb5_digest_set_identifier(context, digest,
opt->server_identifier_string);
if (ret)
krb5_err(context, 1, ret, "krb5_digest_set_type");
}
ret = krb5_digest_set_type(context, digest, opt->type_string);
if (ret)
krb5_err(context, 1, ret, "krb5_digest_set_type");
ret = krb5_digest_set_username(context, digest, opt->username_string);
if (ret)
krb5_err(context, 1, ret, "krb5_digest_set_username");
ret = krb5_digest_set_server_nonce(context, digest,
opt->server_nonce_string);
if (ret)
krb5_err(context, 1, ret, "krb5_digest_set_server_nonce");
if(opt->client_nonce_string) {
ret = krb5_digest_set_client_nonce(context, digest,
opt->client_nonce_string);
if (ret)
krb5_err(context, 1, ret, "krb5_digest_set_client_nonce");
}
ret = krb5_digest_set_opaque(context, digest, opt->opaque_string);
if (ret)
krb5_err(context, 1, ret, "krb5_digest_set_opaque");
ret = krb5_digest_set_responseData(context, digest,
opt->client_response_string);
if (ret)
krb5_err(context, 1, ret, "krb5_digest_set_responseData");
ret = krb5_digest_request(context, digest,
opt->kerberos_realm_string, id);
if (ret)
krb5_err(context, 1, ret, "krb5_digest_request");
status = krb5_digest_rep_get_status(context, digest) ? "ok" : "failed";
rsp = krb5_digest_get_rsp(context, digest);
printf("status=%s\n", status);
if (rsp)
printf("rsp=%s\n", rsp);
printf("tickets=no\n");
ret = krb5_digest_get_session_key(context, digest, &session_key);
if (ret)
krb5_err(context, 1, ret, "krb5_digest_get_session_key");
if (session_key.length) {
char *key;
hex_encode(session_key.data, session_key.length, &key);
if (key == NULL)
krb5_errx(context, 1, "hex_encode");
krb5_data_free(&session_key);
printf("session-key=%s\n", key);
free(key);
}
krb5_digest_free(digest);
return 0;
}
static void
client_chap(const void *server_nonce, size_t snoncelen,
unsigned char server_identifier,
const char *password)
{
EVP_MD_CTX *ctx;
unsigned char md[MD5_DIGEST_LENGTH];
char *h;
ctx = EVP_MD_CTX_create();
EVP_DigestInit_ex(ctx, EVP_md5(), NULL);
EVP_DigestUpdate(ctx, &server_identifier, 1);
EVP_DigestUpdate(ctx, password, strlen(password));
EVP_DigestUpdate(ctx, server_nonce, snoncelen);
EVP_DigestFinal_ex(ctx, md, NULL);
EVP_MD_CTX_destroy(ctx);
hex_encode(md, 16, &h);
printf("responseData=%s\n", h);
free(h);
}
static const unsigned char ms_chap_v2_magic1[39] = {
0x4D, 0x61, 0x67, 0x69, 0x63, 0x20, 0x73, 0x65, 0x72, 0x76,
0x65, 0x72, 0x20, 0x74, 0x6F, 0x20, 0x63, 0x6C, 0x69, 0x65,
0x6E, 0x74, 0x20, 0x73, 0x69, 0x67, 0x6E, 0x69, 0x6E, 0x67,
0x20, 0x63, 0x6F, 0x6E, 0x73, 0x74, 0x61, 0x6E, 0x74
};
static const unsigned char ms_chap_v2_magic2[41] = {
0x50, 0x61, 0x64, 0x20, 0x74, 0x6F, 0x20, 0x6D, 0x61, 0x6B,
0x65, 0x20, 0x69, 0x74, 0x20, 0x64, 0x6F, 0x20, 0x6D, 0x6F,
0x72, 0x65, 0x20, 0x74, 0x68, 0x61, 0x6E, 0x20, 0x6F, 0x6E,
0x65, 0x20, 0x69, 0x74, 0x65, 0x72, 0x61, 0x74, 0x69, 0x6F,
0x6E
};
static const unsigned char ms_rfc3079_magic1[27] = {
0x54, 0x68, 0x69, 0x73, 0x20, 0x69, 0x73, 0x20, 0x74,
0x68, 0x65, 0x20, 0x4d, 0x50, 0x50, 0x45, 0x20, 0x4d,
0x61, 0x73, 0x74, 0x65, 0x72, 0x20, 0x4b, 0x65, 0x79
};
static void
client_mschapv2(const void *server_nonce, size_t snoncelen,
const void *client_nonce, size_t cnoncelen,
const char *username,
const char *password)
{
EVP_MD_CTX *hctx, *ctx;
unsigned char md[SHA_DIGEST_LENGTH], challenge[SHA_DIGEST_LENGTH];
unsigned char hmd[MD4_DIGEST_LENGTH];
struct ntlm_buf answer;
int i, len, ret;
char *h;
ctx = EVP_MD_CTX_create();
EVP_DigestInit_ex(ctx, EVP_sha1(), NULL);
EVP_DigestUpdate(ctx, client_nonce, cnoncelen);
EVP_DigestUpdate(ctx, server_nonce, snoncelen);
EVP_DigestUpdate(ctx, username, strlen(username));
EVP_DigestFinal_ex(ctx, md, NULL);
hctx = EVP_MD_CTX_create();
EVP_DigestInit_ex(hctx, EVP_md4(), NULL);
len = strlen(password);
for (i = 0; i < len; i++) {
EVP_DigestUpdate(hctx, &password[i], 1);
EVP_DigestUpdate(hctx, &password[len], 1);
}
EVP_DigestFinal_ex(hctx, hmd, NULL);
/* ChallengeResponse */
ret = heim_ntlm_calculate_ntlm1(hmd, sizeof(hmd), md, &answer);
if (ret)
errx(1, "heim_ntlm_calculate_ntlm1");
hex_encode(answer.data, answer.length, &h);
printf("responseData=%s\n", h);
free(h);
/* PasswordHash */
EVP_DigestInit_ex(hctx, EVP_md4(), NULL);
EVP_DigestUpdate(hctx, hmd, sizeof(hmd));
EVP_DigestFinal_ex(hctx, hmd, NULL);
/* GenerateAuthenticatorResponse */
EVP_DigestInit_ex(ctx, EVP_sha1(), NULL);
EVP_DigestUpdate(ctx, hmd, sizeof(hmd));
EVP_DigestUpdate(ctx, answer.data, answer.length);
EVP_DigestUpdate(ctx, ms_chap_v2_magic1, sizeof(ms_chap_v2_magic1));
EVP_DigestFinal_ex(ctx, md, NULL);
/* ChallengeHash */
EVP_DigestInit_ex(ctx, EVP_sha1(), NULL);
EVP_DigestUpdate(ctx, client_nonce, cnoncelen);
EVP_DigestUpdate(ctx, server_nonce, snoncelen);
EVP_DigestUpdate(ctx, username, strlen(username));
EVP_DigestFinal_ex(ctx, challenge, NULL);
EVP_DigestInit_ex(ctx, EVP_sha1(), NULL);
EVP_DigestUpdate(ctx, md, sizeof(md));
EVP_DigestUpdate(ctx, challenge, 8);
EVP_DigestUpdate(ctx, ms_chap_v2_magic2, sizeof(ms_chap_v2_magic2));
EVP_DigestFinal_ex(ctx, md, NULL);
hex_encode(md, sizeof(md), &h);
printf("AuthenticatorResponse=%s\n", h);
free(h);
/* get_master, rfc 3079 3.4 */
EVP_DigestInit_ex(ctx, EVP_sha1(), NULL);
EVP_DigestUpdate(ctx, hmd, sizeof(hmd));
EVP_DigestUpdate(ctx, answer.data, answer.length);
EVP_DigestUpdate(ctx, ms_rfc3079_magic1, sizeof(ms_rfc3079_magic1));
EVP_DigestFinal_ex(ctx, md, NULL);
free(answer.data);
hex_encode(md, 16, &h);
printf("session-key=%s\n", h);
free(h);
EVP_MD_CTX_destroy(hctx);
EVP_MD_CTX_destroy(ctx);
}
int
digest_client_request(struct digest_client_request_options *opt,
int argc, char **argv)
{
char *server_nonce, *client_nonce = NULL, server_identifier;
ssize_t snoncelen, cnoncelen = 0;
if (opt->server_nonce_string == NULL)
errx(1, "server nonce missing");
if (opt->password_string == NULL)
errx(1, "password missing");
if (opt->opaque_string == NULL)
errx(1, "opaque missing");
snoncelen = strlen(opt->server_nonce_string);
server_nonce = malloc(snoncelen);
if (server_nonce == NULL)
errx(1, "server_nonce");
snoncelen = hex_decode(opt->server_nonce_string, server_nonce, snoncelen);
if (snoncelen <= 0)
errx(1, "server nonce wrong");
if (opt->client_nonce_string) {
cnoncelen = strlen(opt->client_nonce_string);
client_nonce = malloc(cnoncelen);
if (client_nonce == NULL)
errx(1, "client_nonce");
cnoncelen = hex_decode(opt->client_nonce_string,
client_nonce, cnoncelen);
if (cnoncelen <= 0)
errx(1, "client nonce wrong");
}
if (opt->server_identifier_string) {
int ret;
ret = hex_decode(opt->server_identifier_string, &server_identifier, 1);
if (ret != 1)
errx(1, "server identifier wrong length");
}
if (strcasecmp(opt->type_string, "CHAP") == 0) {
if (opt->server_identifier_string == NULL)
errx(1, "server identifier missing");
client_chap(server_nonce, snoncelen, server_identifier,
opt->password_string);
} else if (strcasecmp(opt->type_string, "MS-CHAP-V2") == 0) {
if (opt->client_nonce_string == NULL)
errx(1, "client nonce missing");
if (opt->username_string == NULL)
errx(1, "client nonce missing");
client_mschapv2(server_nonce, snoncelen,
client_nonce, cnoncelen,
opt->username_string,
opt->password_string);
}
if (client_nonce)
free(client_nonce);
free(server_nonce);
return 0;
}
#include <heimntlm.h>
int
ntlm_server_init(struct ntlm_server_init_options *opt,
int argc, char ** argv)
{
krb5_error_code ret;
krb5_ntlm ntlm;
struct ntlm_type2 type2;
krb5_data challenge, opaque;
struct ntlm_buf data;
char *s;
static char zero2[] = "\x00\x00";
memset(&type2, 0, sizeof(type2));
ret = krb5_ntlm_alloc(context, &ntlm);
if (ret)
krb5_err(context, 1, ret, "krb5_ntlm_alloc");
ret = krb5_ntlm_init_request(context,
ntlm,
opt->kerberos_realm_string,
id,
NTLM_NEG_UNICODE|NTLM_NEG_NTLM,
"NUTCRACKER",
"L");
if (ret)
krb5_err(context, 1, ret, "krb5_ntlm_init_request");
/*
*
*/
ret = krb5_ntlm_init_get_challange(context, ntlm, &challenge);
if (ret)
krb5_err(context, 1, ret, "krb5_ntlm_init_get_challange");
if (challenge.length != sizeof(type2.challenge))
krb5_errx(context, 1, "ntlm challenge have wrong length");
memcpy(type2.challenge, challenge.data, sizeof(type2.challenge));
krb5_data_free(&challenge);
ret = krb5_ntlm_init_get_flags(context, ntlm, &type2.flags);
if (ret)
krb5_err(context, 1, ret, "krb5_ntlm_init_get_flags");
krb5_ntlm_init_get_targetname(context, ntlm, &type2.targetname);
type2.targetinfo.data = zero2;
type2.targetinfo.length = 2;
ret = heim_ntlm_encode_type2(&type2, &data);
if (ret)
krb5_errx(context, 1, "heim_ntlm_encode_type2");
free(type2.targetname);
/*
*
*/
base64_encode(data.data, data.length, &s);
free(data.data);
printf("type2=%s\n", s);
free(s);
/*
*
*/
ret = krb5_ntlm_init_get_opaque(context, ntlm, &opaque);
if (ret)
krb5_err(context, 1, ret, "krb5_ntlm_init_get_opaque");
base64_encode(opaque.data, opaque.length, &s);
krb5_data_free(&opaque);
printf("opaque=%s\n", s);
free(s);
/*
*
*/
krb5_ntlm_free(context, ntlm);
return 0;
}
/*
*
*/
int
help(void *opt, int argc, char **argv)
{
sl_slc_help(commands, argc, argv);
return 0;
}
int
main(int argc, char **argv)
{
krb5_error_code ret;
int optidx = 0;
setprogname(argv[0]);
ret = krb5_init_context (&context);
if (ret == KRB5_CONFIG_BADFORMAT)
errx (1, "krb5_init_context failed to parse configuration file");
else if (ret)
errx(1, "krb5_init_context failed: %d", ret);
if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
usage(1);
if (help_flag)
usage (0);
if(version_flag){
print_version(NULL);
exit(0);
}
argc -= optidx;
argv += optidx;
if (argc == 0) {
help(NULL, argc, argv);
return 1;
}
if (ccache_string) {
ret = krb5_cc_resolve(context, ccache_string, &id);
if (ret)
krb5_err(context, 1, ret, "krb5_cc_resolve");
}
ret = sl_command (commands, argc, argv);
if (ret == -1) {
help(NULL, argc, argv);
return 1;
}
return ret;
}
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