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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
* COPYRIGHT (c) 2006
* The Regents of the University of Michigan
* ALL RIGHTS RESERVED
*
* Permission is granted to use, copy, create derivative works
* and redistribute this software and such derivative works
* for any purpose, so long as the name of The University of
* Michigan is not used in any advertising or publicity
* pertaining to the use of distribution of this software
* without specific, written prior authorization. If the
* above copyright notice or any other identification of the
* University of Michigan is included in any copy of any
* portion of this software, then the disclaimer below must
* also be included.
*
* THIS SOFTWARE IS PROVIDED AS IS, WITHOUT REPRESENTATION
* FROM THE UNIVERSITY OF MICHIGAN AS TO ITS FITNESS FOR ANY
* PURPOSE, AND WITHOUT WARRANTY BY THE UNIVERSITY OF
* MICHIGAN OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING
* WITHOUT LIMITATION THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE
* REGENTS OF THE UNIVERSITY OF MICHIGAN SHALL NOT BE LIABLE
* FOR ANY DAMAGES, INCLUDING SPECIAL, INDIRECT, INCIDENTAL, OR
* CONSEQUENTIAL DAMAGES, WITH RESPECT TO ANY CLAIM ARISING
* OUT OF OR IN CONNECTION WITH THE USE OF THE SOFTWARE, EVEN
* IF IT HAS BEEN OR IS HEREAFTER ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGES.
*/
/*
* Create a key given random data. It is assumed that random_key has
* already been initialized and random_key->contents have been allocated
* with the correct length.
*/
#include "k5-int.h"
#include "etypes.h"
krb5_error_code KRB5_CALLCONV
krb5_c_random_to_key(krb5_context context, krb5_enctype enctype,
krb5_data *random_data, krb5_keyblock *random_key)
{
krb5_error_code ret;
const struct krb5_keytypes *ktp;
const struct krb5_enc_provider *enc;
if (random_data == NULL || random_key == NULL ||
random_key->contents == NULL)
return EINVAL;
ktp = find_enctype(enctype);
if (ktp == NULL)
return KRB5_BAD_ENCTYPE;
enc = ktp->enc;
if (random_key->length != enc->keylength)
return KRB5_BAD_KEYSIZE;
ret = (*enc->make_key)(random_data, random_key);
if (ret)
memset(random_key->contents, 0, random_key->length);
return ret;
}
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