|
Packit |
fd8b60 |
/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
|
|
Packit |
fd8b60 |
/*
|
|
Packit |
fd8b60 |
* COPYRIGHT (c) 2006
|
|
Packit |
fd8b60 |
* The Regents of the University of Michigan
|
|
Packit |
fd8b60 |
* ALL RIGHTS RESERVED
|
|
Packit |
fd8b60 |
*
|
|
Packit |
fd8b60 |
* Permission is granted to use, copy, create derivative works
|
|
Packit |
fd8b60 |
* and redistribute this software and such derivative works
|
|
Packit |
fd8b60 |
* for any purpose, so long as the name of The University of
|
|
Packit |
fd8b60 |
* Michigan is not used in any advertising or publicity
|
|
Packit |
fd8b60 |
* pertaining to the use of distribution of this software
|
|
Packit |
fd8b60 |
* without specific, written prior authorization. If the
|
|
Packit |
fd8b60 |
* above copyright notice or any other identification of the
|
|
Packit |
fd8b60 |
* University of Michigan is included in any copy of any
|
|
Packit |
fd8b60 |
* portion of this software, then the disclaimer below must
|
|
Packit |
fd8b60 |
* also be included.
|
|
Packit |
fd8b60 |
*
|
|
Packit |
fd8b60 |
* THIS SOFTWARE IS PROVIDED AS IS, WITHOUT REPRESENTATION
|
|
Packit |
fd8b60 |
* FROM THE UNIVERSITY OF MICHIGAN AS TO ITS FITNESS FOR ANY
|
|
Packit |
fd8b60 |
* PURPOSE, AND WITHOUT WARRANTY BY THE UNIVERSITY OF
|
|
Packit |
fd8b60 |
* MICHIGAN OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING
|
|
Packit |
fd8b60 |
* WITHOUT LIMITATION THE IMPLIED WARRANTIES OF
|
|
Packit |
fd8b60 |
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE
|
|
Packit |
fd8b60 |
* REGENTS OF THE UNIVERSITY OF MICHIGAN SHALL NOT BE LIABLE
|
|
Packit |
fd8b60 |
* FOR ANY DAMAGES, INCLUDING SPECIAL, INDIRECT, INCIDENTAL, OR
|
|
Packit |
fd8b60 |
* CONSEQUENTIAL DAMAGES, WITH RESPECT TO ANY CLAIM ARISING
|
|
Packit |
fd8b60 |
* OUT OF OR IN CONNECTION WITH THE USE OF THE SOFTWARE, EVEN
|
|
Packit |
fd8b60 |
* IF IT HAS BEEN OR IS HEREAFTER ADVISED OF THE POSSIBILITY OF
|
|
Packit |
fd8b60 |
* SUCH DAMAGES.
|
|
Packit |
fd8b60 |
*/
|
|
Packit |
fd8b60 |
|
|
Packit |
fd8b60 |
/*
|
|
Packit |
fd8b60 |
* Create a key given random data. It is assumed that random_key has
|
|
Packit |
fd8b60 |
* already been initialized and random_key->contents have been allocated
|
|
Packit |
fd8b60 |
* with the correct length.
|
|
Packit |
fd8b60 |
*/
|
|
Packit |
fd8b60 |
#include "crypto_int.h"
|
|
Packit |
fd8b60 |
|
|
Packit |
fd8b60 |
krb5_error_code KRB5_CALLCONV
|
|
Packit |
fd8b60 |
krb5_c_random_to_key(krb5_context context, krb5_enctype enctype,
|
|
Packit |
fd8b60 |
krb5_data *random_data, krb5_keyblock *random_key)
|
|
Packit |
fd8b60 |
{
|
|
Packit |
fd8b60 |
krb5_error_code ret;
|
|
Packit |
fd8b60 |
const struct krb5_keytypes *ktp;
|
|
Packit |
fd8b60 |
|
|
Packit |
fd8b60 |
if (random_data == NULL || random_key == NULL ||
|
|
Packit |
fd8b60 |
random_key->contents == NULL)
|
|
Packit |
fd8b60 |
return EINVAL;
|
|
Packit |
fd8b60 |
|
|
Packit |
fd8b60 |
ktp = find_enctype(enctype);
|
|
Packit |
fd8b60 |
if (ktp == NULL)
|
|
Packit |
fd8b60 |
return KRB5_BAD_ENCTYPE;
|
|
Packit |
fd8b60 |
|
|
Packit |
fd8b60 |
if (random_key->length != ktp->enc->keylength)
|
|
Packit |
fd8b60 |
return KRB5_BAD_KEYSIZE;
|
|
Packit |
fd8b60 |
|
|
Packit |
fd8b60 |
ret = ktp->rand2key(random_data, random_key);
|
|
Packit |
fd8b60 |
if (ret)
|
|
Packit |
fd8b60 |
zap(random_key->contents, random_key->length);
|
|
Packit |
fd8b60 |
|
|
Packit |
fd8b60 |
return ret;
|
|
Packit |
fd8b60 |
}
|
|
Packit |
fd8b60 |
|
|
Packit |
fd8b60 |
krb5_error_code
|
|
Packit |
fd8b60 |
k5_rand2key_direct(const krb5_data *randombits, krb5_keyblock *keyblock)
|
|
Packit |
fd8b60 |
{
|
|
Packit |
fd8b60 |
if (randombits->length != keyblock->length)
|
|
Packit |
fd8b60 |
return KRB5_CRYPTO_INTERNAL;
|
|
Packit |
fd8b60 |
|
|
Packit |
fd8b60 |
keyblock->magic = KV5M_KEYBLOCK;
|
|
Packit |
fd8b60 |
memcpy(keyblock->contents, randombits->data, randombits->length);
|
|
Packit |
fd8b60 |
return 0;
|
|
Packit |
fd8b60 |
}
|