1 /* 2 * COPYRIGHT (c) 2006 3 * The Regents of the University of Michigan 4 * ALL RIGHTS RESERVED 5 * 6 * Permission is granted to use, copy, create derivative works 7 * and redistribute this software and such derivative works 8 * for any purpose, so long as the name of The University of 9 * Michigan is not used in any advertising or publicity 10 * pertaining to the use of distribution of this software 11 * without specific, written prior authorization. If the 12 * above copyright notice or any other identification of the 13 * University of Michigan is included in any copy of any 14 * portion of this software, then the disclaimer below must 15 * also be included. 16 * 17 * THIS SOFTWARE IS PROVIDED AS IS, WITHOUT REPRESENTATION 18 * FROM THE UNIVERSITY OF MICHIGAN AS TO ITS FITNESS FOR ANY 19 * PURPOSE, AND WITHOUT WARRANTY BY THE UNIVERSITY OF 20 * MICHIGAN OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING 21 * WITHOUT LIMITATION THE IMPLIED WARRANTIES OF 22 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE 23 * REGENTS OF THE UNIVERSITY OF MICHIGAN SHALL NOT BE LIABLE 24 * FOR ANY DAMAGES, INCLUDING SPECIAL, INDIRECT, INCIDENTAL, OR 25 * CONSEQUENTIAL DAMAGES, WITH RESPECT TO ANY CLAIM ARISING 26 * OUT OF OR IN CONNECTION WITH THE USE OF THE SOFTWARE, EVEN 27 * IF IT HAS BEEN OR IS HEREAFTER ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGES. 29 */ 30 31 32 #include "k5-int.h" 33 #include "etypes.h" 34 35 /* 36 * keybytes is the number of bytes required as input to make a key, 37 * keylength is the length of the final key in bytes 38 */ 39 krb5_error_code KRB5_CALLCONV 40 krb5_c_keylengths(krb5_context context, krb5_enctype enctype, 41 size_t *keybytes, size_t *keylength) 42 { 43 int i; 44 45 if (keybytes == NULL && keylength == NULL) 46 return(EINVAL); 47 48 for (i=0; i<krb5_enctypes_length; i++) { 49 if (krb5_enctypes_list[i].etype == enctype) 50 break; 51 } 52 53 if (i == krb5_enctypes_length) 54 return(KRB5_BAD_ENCTYPE); 55 56 if (keybytes) 57 *keybytes = krb5_enctypes_list[i].enc->keybytes; 58 if (keylength) 59 *keylength = krb5_enctypes_list[i].enc->keylength; 60 61 return(0); 62 } 63