17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * lib/krb5/krb/gen_subkey.c 37c478bd9Sstevel@tonic-gate * 4*159d09a2SMark Phalan * Copyright 1991, 2002 by the Massachusetts Institute of Technology. 57c478bd9Sstevel@tonic-gate * All Rights Reserved. 67c478bd9Sstevel@tonic-gate * 77c478bd9Sstevel@tonic-gate * Export of this software from the United States of America may 87c478bd9Sstevel@tonic-gate * require a specific license from the United States Government. 97c478bd9Sstevel@tonic-gate * It is the responsibility of any person or organization contemplating 107c478bd9Sstevel@tonic-gate * export to obtain such a license before exporting. 117c478bd9Sstevel@tonic-gate * 127c478bd9Sstevel@tonic-gate * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and 137c478bd9Sstevel@tonic-gate * distribute this software and its documentation for any purpose and 147c478bd9Sstevel@tonic-gate * without fee is hereby granted, provided that the above copyright 157c478bd9Sstevel@tonic-gate * notice appear in all copies and that both that copyright notice and 167c478bd9Sstevel@tonic-gate * this permission notice appear in supporting documentation, and that 177c478bd9Sstevel@tonic-gate * the name of M.I.T. not be used in advertising or publicity pertaining 187c478bd9Sstevel@tonic-gate * to distribution of the software without specific, written prior 197c478bd9Sstevel@tonic-gate * permission. Furthermore if you modify this software you must label 207c478bd9Sstevel@tonic-gate * your software as modified software and not distribute it in such a 217c478bd9Sstevel@tonic-gate * fashion that it might be confused with the original M.I.T. software. 227c478bd9Sstevel@tonic-gate * M.I.T. makes no representations about the suitability of 237c478bd9Sstevel@tonic-gate * this software for any purpose. It is provided "as is" without express 247c478bd9Sstevel@tonic-gate * or implied warranty. 257c478bd9Sstevel@tonic-gate * 267c478bd9Sstevel@tonic-gate * 277c478bd9Sstevel@tonic-gate * Routine to automatically generate a subsession key based on an input key. 287c478bd9Sstevel@tonic-gate */ 297c478bd9Sstevel@tonic-gate 30*159d09a2SMark Phalan #include "k5-int.h" 317c478bd9Sstevel@tonic-gate 327c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 337c478bd9Sstevel@tonic-gate krb5_error_code 34505d05c7Sgtb krb5_generate_subkey(krb5_context context, const krb5_keyblock *key, krb5_keyblock **subkey) 357c478bd9Sstevel@tonic-gate { 367c478bd9Sstevel@tonic-gate krb5_error_code retval; 37505d05c7Sgtb 38505d05c7Sgtb #if 0 39505d05c7Sgtb /* 40505d05c7Sgtb * Solaris Kerberos: Don't bother with this PRNG stuff, 41505d05c7Sgtb * we have /dev/random and PKCS#11 to handle Random Numbers. 42505d05c7Sgtb */ 43505d05c7Sgtb 447c478bd9Sstevel@tonic-gate krb5_data seed; 457c478bd9Sstevel@tonic-gate 467c478bd9Sstevel@tonic-gate seed.length = key->length; 47*159d09a2SMark Phalan seed.data = key->contents; 48505d05c7Sgtb if ((retval = krb5_c_random_add_entropy(context, KRB5_C_RANDSOURCE_TRUSTEDPARTY, &seed))) 497c478bd9Sstevel@tonic-gate return(retval); 50505d05c7Sgtb #endif /* 0 */ 517c478bd9Sstevel@tonic-gate 527c478bd9Sstevel@tonic-gate if ((*subkey = (krb5_keyblock *) malloc(sizeof(krb5_keyblock))) == NULL) 537c478bd9Sstevel@tonic-gate return(ENOMEM); 547c478bd9Sstevel@tonic-gate 55*159d09a2SMark Phalan /* Solaris Kerberos */ 567c478bd9Sstevel@tonic-gate (void) memset(*subkey, 0, sizeof(krb5_keyblock)); 577c478bd9Sstevel@tonic-gate 587c478bd9Sstevel@tonic-gate if ((retval = krb5_c_make_random_key(context, key->enctype, *subkey))) { 597c478bd9Sstevel@tonic-gate krb5_xfree(*subkey); 607c478bd9Sstevel@tonic-gate return(retval); 617c478bd9Sstevel@tonic-gate } 627c478bd9Sstevel@tonic-gate 637c478bd9Sstevel@tonic-gate return(0); 647c478bd9Sstevel@tonic-gate } 65