keylengths.c revision 159d09a20817016f09b3ea28d1bdada4a336bb91
/*
* 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.
*/
#include "k5-int.h"
#include "etypes.h"
/*
* keybytes is the number of bytes required as input to make a key,
* keylength is the length of the final key in bytes
*/
krb5_error_code KRB5_CALLCONV
krb5_c_keylengths(krb5_context context, krb5_enctype enctype,
size_t *keybytes, size_t *keylength)
{
int i;
if (keybytes == NULL && keylength == NULL)
return(EINVAL);
for (i=0; i<krb5_enctypes_length; i++) {
if (krb5_enctypes_list[i].etype == enctype)
break;
}
if (i == krb5_enctypes_length)
return(KRB5_BAD_ENCTYPE);
if (keybytes)
*keybytes = krb5_enctypes_list[i].enc->keybytes;
if (keylength)
*keylength = krb5_enctypes_list[i].enc->keylength;
return(0);
}