Files
heimdal/kdc/windc_plugin.h
Isaac Boukris 2ffaba9401 kdc: sign ticket using Windows PAC
Split Windows PAC signing and verification logic, as the signing has to be when
the ticket is ready.

Create sign and verify the PAC KDC signature if the plugin did not, allowing
for S4U2Proxy to work, instead of KRB5SignedPath.

Use the header key to verify PAC server signature, as the same key used to
encrypt/decrypt the ticket should be used for PAC server signature, like U2U
tickets are signed witht the tgt session-key and not with the longterm key,
and so krbtgt should be no different and the header key should be used.

Lookup the delegated client in DB instead of passing the delegator DB entry.

Add PAC ticket-signatures and related functions.

Note: due to the change from KRB5SignedPath to PAC, S4U2Proxy requests
against new KDC will not work if the evidence ticket was acquired from
an old KDC, and vide versa.

Closes: #767
2021-09-19 13:25:27 +10:00

91 lines
3.2 KiB
C

/*
* Copyright (c) 2006 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.
*/
/* $Id$ */
#ifndef HEIMDAL_KRB5_PAC_PLUGIN_H
#define HEIMDAL_KRB5_PAC_PLUGIN_H 1
#include <krb5.h>
/*
* The PAC generate function should allocate a krb5_pac using
* krb5_pac_init and fill in the PAC structure for the principal using
* krb5_pac_add_buffer.
*
* The PAC verify function should verify the PAC KDC signatures by fetching
* the right KDC key and calling krb5_pac_verify() with that KDC key.
* Optionally, update the PAC buffers upon success.
*
* Check client access function check if the client is authorized.
*/
struct hdb_entry_ex;
typedef krb5_error_code
(*krb5plugin_windc_pac_generate)(void *, krb5_context,
struct hdb_entry_ex *, krb5_pac *);
typedef krb5_error_code
(*krb5plugin_windc_pac_verify)(void *, krb5_context,
const krb5_principal, /* new ticket client */
const krb5_principal, /* delegation proxy */
struct hdb_entry_ex *,/* client */
struct hdb_entry_ex *,/* server */
struct hdb_entry_ex *,/* krbtgt */
krb5_pac *);
typedef krb5_error_code
(*krb5plugin_windc_client_access)(
void *, krb5_context,
krb5_kdc_configuration *config,
hdb_entry_ex *, const char *,
hdb_entry_ex *, const char *,
KDC_REQ *, METHOD_DATA *);
#define KRB5_WINDC_PLUGIN_MINOR 6
#define KRB5_WINDC_PLUGING_MINOR KRB5_WINDC_PLUGIN_MINOR
typedef struct krb5plugin_windc_ftable {
int minor_version;
krb5_error_code (*init)(krb5_context, void **);
void (*fini)(void *);
krb5plugin_windc_pac_generate pac_generate;
krb5plugin_windc_pac_verify pac_verify;
krb5plugin_windc_client_access client_access;
} krb5plugin_windc_ftable;
#endif /* HEIMDAL_KRB5_PAC_PLUGIN_H */