/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
* Copyright (C) 1998 by the FundsXpress, INC.
*
* All rights reserved.
*
* Export of this software from the United States of America may require
* a specific license from the United States Government. It is the
* responsibility of any person or organization contemplating export to
* obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of FundsXpress. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. FundsXpress makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#include "crypto_int.h"
static krb5_boolean
is_keyed_for(const struct krb5_cksumtypes *ctp,
const struct krb5_keytypes *ktp)
{
if (ctp->flags & CKSUM_UNKEYED)
return FALSE;
return (!ctp->enc || ktp->enc == ctp->enc);
}
krb5_error_code KRB5_CALLCONV
krb5_c_keyed_checksum_types(krb5_context context, krb5_enctype enctype,
unsigned int *count, krb5_cksumtype **cksumtypes)
{
unsigned int i, c, nctypes;
krb5_cksumtype *ctypes;
const struct krb5_cksumtypes *ctp;
const struct krb5_keytypes *ktp;
*count = 0;
*cksumtypes = NULL;
ktp = find_enctype(enctype);
if (ktp == NULL)
return KRB5_BAD_ENCTYPE;
nctypes = 0;
for (i = 0; i < krb5int_cksumtypes_length; i++) {
ctp = &krb5int_cksumtypes_list[i];
if (is_keyed_for(ctp, ktp))
nctypes++;
}
ctypes = malloc(nctypes * sizeof(krb5_cksumtype));
if (ctypes == NULL)
return ENOMEM;
c = 0;
for (i = 0; i < krb5int_cksumtypes_length; i++) {
ctp = &krb5int_cksumtypes_list[i];
if (is_keyed_for(ctp, ktp))
ctypes[c++] = ctp->ctype;
}
*count = nctypes;
*cksumtypes = ctypes;
return 0;
}
void KRB5_CALLCONV
krb5_free_cksumtypes(krb5_context context, krb5_cksumtype *val)
{
free(val);
}