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/*
* 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 "k5-int.h"
#include "etypes.h"
#include "aead.h"
krb5_error_code KRB5_CALLCONV
krb5_k_decrypt(krb5_context context, krb5_key key,
krb5_keyusage usage, const krb5_data *ivec,
const krb5_enc_data *input, krb5_data *output)
{
const struct krb5_keytypes *ktp;
ktp = find_enctype(key->keyblock.enctype);
if (ktp == NULL)
return KRB5_BAD_ENCTYPE;
if (input->enctype != ENCTYPE_UNKNOWN && ktp->etype != input->enctype)
return KRB5_BAD_ENCTYPE;
if (ktp->decrypt == NULL) {
assert(ktp->aead != NULL);
return krb5int_c_decrypt_aead_compat(ktp->aead, ktp->enc, ktp->hash,
key, usage, ivec,
&input->ciphertext, output);
}
return (*ktp->decrypt)(ktp->enc, ktp->hash, key, usage, ivec,
&input->ciphertext, output);
}
krb5_error_code KRB5_CALLCONV
krb5_c_decrypt(krb5_context context, const krb5_keyblock *keyblock,
krb5_keyusage usage, const krb5_data *ivec,
const krb5_enc_data *input, krb5_data *output)
{
krb5_key key;
krb5_error_code ret;
ret = krb5_k_create_key(context, keyblock, &key);
if (ret != 0)
return ret;
ret = krb5_k_decrypt(context, key, usage, ivec, input, output);
krb5_k_free_key(context, key);
return ret;
}
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