/* -*- 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"

krb5_error_code KRB5_CALLCONV

krb5_c_encrypt_length(krb5_context context, krb5_enctype enctype,

                      size_t inputlen, size_t *length)

{

    const struct krb5_keytypes *ktp;

    unsigned int header_len = 0, padding_len = 0, trailer_len = 0;

    ktp = find_enctype(enctype);

    if (ktp == NULL)

        return KRB5_BAD_ENCTYPE;

    header_len = ktp->crypto_length(ktp, KRB5_CRYPTO_TYPE_HEADER);

    padding_len = krb5int_c_padding_length(ktp, inputlen);

    trailer_len = ktp->crypto_length(ktp, KRB5_CRYPTO_TYPE_TRAILER);

    *length = header_len + inputlen + padding_len + trailer_len;

    return 0;

}