1 /* 2 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5 6 /* 7 * lib/crypto/state.c 8 * 9 * Copyright (C) 2001 by the Massachusetts Institute of Technology. 10 * All rights reserved. 11 * 12 * Export of this software from the United States of America may 13 * require a specific license from the United States Government. 14 * It is the responsibility of any person or organization contemplating 15 * export to obtain such a license before exporting. 16 * 17 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and 18 * distribute this software and its documentation for any purpose and 19 * without fee is hereby granted, provided that the above copyright 20 * notice appear in all copies and that both that copyright notice and 21 * this permission notice appear in supporting documentation, and that 22 * the name of M.I.T. not be used in advertising or publicity pertaining 23 * to distribution of the software without specific, written prior 24 * permission. Furthermore if you modify this software you must label 25 * your software as modified software and not distribute it in such a 26 * fashion that it might be confused with the original M.I.T. software. 27 * M.I.T. makes no representations about the suitability of 28 * this software for any purpose. It is provided "as is" without express 29 30 * 31 * 32 * 33 * * Section 6 (Encryption) of the Kerberos revisions document defines 34 * cipher states to be used to chain encryptions and decryptions 35 * together. Examples of cipher states include initialization vectors 36 * for CBC encription. This file contains implementations of 37 * krb5_c_init_state and krb5_c_free_state used by clients of the 38 * Kerberos crypto library. 39 */ 40 #include "k5-int.h" 41 #include "etypes.h" 42 43 krb5_error_code KRB5_CALLCONV 44 krb5_c_init_state (krb5_context context, const krb5_keyblock *key, 45 krb5_keyusage keyusage, krb5_data *new_state) 46 { 47 int i; 48 49 for (i=0; i<krb5_enctypes_length; i++) { 50 if (krb5_enctypes_list[i].etype == key->enctype) 51 break; 52 } 53 54 if (i == krb5_enctypes_length) 55 return(KRB5_BAD_ENCTYPE); 56 57 /* Solaris Kerberos */ 58 return (*(krb5_enctypes_list[i].enc->init_state)) 59 (context, key, keyusage, new_state); 60 } 61 62 krb5_error_code KRB5_CALLCONV 63 krb5_c_free_state (krb5_context context, const krb5_keyblock *key, 64 krb5_data *state) 65 { 66 int i; 67 68 for (i=0; i<krb5_enctypes_length; i++) { 69 if (krb5_enctypes_list[i].etype == key->enctype) 70 break; 71 } 72 73 if (i == krb5_enctypes_length) 74 return(KRB5_BAD_ENCTYPE); 75 76 /* Solaris Kerberos */ 77 return (*(krb5_enctypes_list[i].enc->free_state)) 78 (context, state); 79 } 80