ae77177087
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.
188 lines
5.2 KiB
Groff
188 lines
5.2 KiB
Groff
.\" 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 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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.\" $Id$
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.\"
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.Dd August 27, 2005
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.Dt KRB5_MK_REQ 3
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.Os HEIMDAL
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.Sh NAME
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.Nm krb5_mk_req ,
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.Nm krb5_mk_req_exact ,
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.Nm krb5_mk_req_extended ,
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.Nm krb5_rd_req ,
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.Nm krb5_rd_req_with_keyblock ,
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.Nm krb5_mk_rep ,
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.Nm krb5_mk_rep_exact ,
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.Nm krb5_mk_rep_extended ,
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.Nm krb5_rd_rep ,
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.Nm krb5_build_ap_req ,
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.Nm krb5_verify_ap_req
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.Nd create and read application authentication request
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.Sh LIBRARY
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Kerberos 5 Library (libkrb5, -lkrb5)
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.Sh SYNOPSIS
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.In krb5.h
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.Ft krb5_error_code
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.Fo krb5_mk_req
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.Fa "krb5_context context"
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.Fa "krb5_auth_context *auth_context"
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.Fa "const krb5_flags ap_req_options"
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.Fa "const char *service"
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.Fa "const char *hostname"
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.Fa "krb5_data *in_data"
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.Fa "krb5_ccache ccache"
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.Fa "krb5_data *outbuf"
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.Fc
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.Ft krb5_error_code
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.Fo krb5_mk_req_extended
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.Fa "krb5_context context"
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.Fa "krb5_auth_context *auth_context"
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.Fa "const krb5_flags ap_req_options"
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.Fa "krb5_data *in_data"
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.Fa "krb5_creds *in_creds"
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.Fa "krb5_data *outbuf"
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.Fc
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.Ft krb5_error_code
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.Fo krb5_rd_req
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.Fa "krb5_context context"
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.Fa "krb5_auth_context *auth_context"
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.Fa "const krb5_data *inbuf"
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.Fa "krb5_const_principal server"
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.Fa "krb5_keytab keytab"
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.Fa "krb5_flags *ap_req_options"
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.Fa "krb5_ticket **ticket"
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.Fc
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.Ft krb5_error_code
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.Fo krb5_build_ap_req
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.Fa "krb5_context context"
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.Fa "krb5_enctype enctype"
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.Fa "krb5_creds *cred"
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.Fa "krb5_flags ap_options"
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.Fa "krb5_data authenticator"
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.Fa "krb5_data *retdata"
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.Fc
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.Ft krb5_error_code
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.Fo krb5_verify_ap_req
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.Fa "krb5_context context"
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.Fa "krb5_auth_context *auth_context"
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.Fa "krb5_ap_req *ap_req"
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.Fa "krb5_const_principal server"
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.Fa "krb5_keyblock *keyblock"
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.Fa "krb5_flags flags"
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.Fa "krb5_flags *ap_req_options"
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.Fa "krb5_ticket **ticket"
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.Fc
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.Sh DESCRIPTION
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The functions documented in this manual page document the functions
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that facilitates the exchange between a Kerberos client and server.
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They are the core functions used in the authentication exchange
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between the client and the server.
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.Pp
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The
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.Nm krb5_mk_req
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and
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.Nm krb5_mk_req_extended
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creates the Kerberos message
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.Dv KRB_AP_REQ
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that is sent from the client to the server as the first packet in a client/server exchange. The result that should be sent to server is stored in
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.Fa outbuf .
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.Pp
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.Fa auth_context
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should be allocated with
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.Fn krb5_auth_con_init
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or
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.Dv NULL
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passed in, in that case, it will be allocated and freed internally.
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.Pp
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The input data
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.Fa in_data
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will have a checksum calculated over it and checksum will be
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transported in the message to the server.
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.Pp
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.Fa ap_req_options
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can be set to one or more of the following flags:
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.Pp
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.Bl -tag -width indent
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.It Dv AP_OPTS_USE_SESSION_KEY
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Use the session key when creating the request, used for user to user
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authentication.
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.It Dv AP_OPTS_MUTUAL_REQUIRED
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Mark the request as mutual authenticate required so that the receiver
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returns a mutual authentication packet.
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.El
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.Pp
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The
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.Nm krb5_rd_req
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read the AP_REQ in
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.Fa inbuf
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and verify and extract the content.
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If
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.Fa server
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is specified, that server will be fetched from the
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.Fa keytab
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and used unconditionally.
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If
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.Fa server
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is
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.Dv NULL ,
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the
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.Fa keytab
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will be search for a matching principal.
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.Pp
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The
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.Fa keytab
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argument specifies what keytab to search for receiving principals.
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The arguments
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.Fa ap_req_options
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and
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.Fa ticket
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returns the content.
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.Pp
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When the AS-REQ is a user to user request, neither of
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.Fa keytab
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or
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.Fa principal
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are used, instead
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.Fn krb5_rd_req
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expects the session key to be set in
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.Fa auth_context .
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.Pp
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The
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.Nm krb5_verify_ap_req
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and
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.Nm krb5_build_ap_req
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both constructs and verify the AP_REQ message, should not be used by
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external code.
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.Sh SEE ALSO
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.Xr krb5 3 ,
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.Xr krb5.conf 5
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