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/*
* 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 "k5-int.h"
#include "etypes.h"
#include "aead.h"
krb5_error_code KRB5_CALLCONV
krb5_c_decrypt_iov(krb5_context context,
const krb5_keyblock *key,
krb5_keyusage usage,
const krb5_data *cipher_state,
krb5_crypto_iov *data,
size_t num_data)
{
int i;
const struct krb5_keytypes *ktp = NULL;
for (i = 0; i < krb5_enctypes_length; i++) {
if (krb5_enctypes_list[i].etype == key->enctype) {
ktp = &krb5_enctypes_list[i];
break;
}
}
if (ktp == NULL || ktp->aead == 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->aead, ktp->enc, ktp->hash,
key, usage, cipher_state, data, num_data);
}
return ktp->aead->decrypt_iov(ktp->aead, ktp->enc, ktp->hash,
key, usage, cipher_state, data, num_data);
}
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