/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/* plugins/preauth/spake/internal.h - SPAKE internal function declarations */
/*
* Copyright (C) 2015 by the Massachusetts Institute of Technology.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
* COPYRIGHT HOLDER 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.
*/
#ifndef UTIL_H
#define UTIL_H
#include "k5-int.h"
#include "groups.h"
krb5_error_code convert_to_padata(krb5_data *data, krb5_pa_data ***pa_out);
krb5_error_code update_thash(krb5_context context, groupstate *gstate,
int32_t group, krb5_data *thash,
const krb5_data *data1, const krb5_data *data2);
krb5_error_code derive_wbytes(krb5_context context, int32_t group,
const krb5_keyblock *ikey,
krb5_data *wbytes_out);
krb5_error_code derive_key(krb5_context context, groupstate *gstate,
int32_t group, const krb5_keyblock *ikey,
const krb5_data *wbytes,
const krb5_data *spakeresult,
const krb5_data *thash, const krb5_data *der_req,
uint32_t n, krb5_keyblock **out);
#endif /* UTIL_H */