diff options
Diffstat (limited to 'src/lib/crypto/krb/state.c')
-rw-r--r-- | src/lib/crypto/krb/state.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/src/lib/crypto/krb/state.c b/src/lib/crypto/krb/state.c new file mode 100644 index 0000000..f69746c --- /dev/null +++ b/src/lib/crypto/krb/state.c @@ -0,0 +1,72 @@ +/* + * lib/crypto/state.c + * + * Copyright (C) 2001 by the Massachusetts Institute of Technology. + * All rights reserved. + * + * Export of this software from the United States of America may + * require a specific license from the United States Government. + * It is the responsibility of any person or organization contemplating + * export to obtain such a license before exporting. + * + * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and + * distribute this software and its documentation for any purpose and + * without fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright notice and + * this permission notice appear in supporting documentation, and that + * the name of M.I.T. not be used in advertising or publicity pertaining + * to distribution of the software without specific, written prior + * permission. Furthermore if you modify this software you must label + * your software as modified software and not distribute it in such a + * fashion that it might be confused with the original M.I.T. software. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" without express + + * + * + * + * * Section 6 (Encryption) of the Kerberos revisions document defines + * cipher states to be used to chain encryptions and decryptions + * together. Examples of cipher states include initialization vectors + * for CBC encription. This file contains implementations of + * krb5_c_init_state and krb5_c_free_state used by clients of the + * Kerberos crypto library. + */ +#include "k5-int.h" +#include "etypes.h" + +krb5_error_code KRB5_CALLCONV +krb5_c_init_state (krb5_context context, const krb5_keyblock *key, + krb5_keyusage keyusage, krb5_data *new_state) +{ + int i; + + for (i=0; i<krb5_enctypes_length; i++) { + if (krb5_enctypes_list[i].etype == key->enctype) + break; + } + + if (i == krb5_enctypes_length) + return(KRB5_BAD_ENCTYPE); + + return (*(krb5_enctypes_list[i].enc->init_state)) + (key, keyusage, new_state); +} + +krb5_error_code KRB5_CALLCONV +krb5_c_free_state (krb5_context context, const krb5_keyblock *key, + krb5_data *state) +{ + int i; + + for (i=0; i<krb5_enctypes_length; i++) { + if (krb5_enctypes_list[i].etype == key->enctype) + break; + } + + if (i == krb5_enctypes_length) + return(KRB5_BAD_ENCTYPE); + + return (*(krb5_enctypes_list[i].enc->free_state)) + (state); +} |