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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
* lib/crypto/encrypt_iov.c
*
* Copyright 2008 by the Massachusetts Institute of Technology.
* 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 M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. Furthermore if you modify this software you must label
* your software as modified software and not distribute it in such a
* fashion that it might be confused with the original M.I.T. software.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*/
#include "crypto_int.h"
krb5_error_code KRB5_CALLCONV
krb5_k_decrypt_iov(krb5_context context, krb5_key key, krb5_keyusage usage,
const krb5_data *cipher_state, krb5_crypto_iov *data,
size_t num_data)
{
const struct krb5_keytypes *ktp;
ktp = find_enctype(key->keyblock.enctype);
if (ktp == NULL)
return KRB5_BAD_ENCTYPE;
if (krb5int_c_locate_iov(data, num_data,
KRB5_CRYPTO_TYPE_STREAM) != NULL) {
return krb5int_c_iov_decrypt_stream(ktp, key, usage, cipher_state,
data, num_data);
}
return ktp->decrypt(ktp, key, usage, cipher_state, data, num_data);
}
krb5_error_code KRB5_CALLCONV
krb5_c_decrypt_iov(krb5_context context, const krb5_keyblock *keyblock,
krb5_keyusage usage, const krb5_data *cipher_state,
krb5_crypto_iov *data, size_t num_data)
{
krb5_key key;
krb5_error_code ret;
ret = krb5_k_create_key(context, keyblock, &key);
if (ret != 0)
return ret;
ret = krb5_k_decrypt_iov(context, key, usage, cipher_state, data,
num_data);
krb5_k_free_key(context, key);
return ret;
}
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