diff options
Diffstat (limited to 'src/lib/gssapi/krb5/util_seqnum.c')
| -rw-r--r-- | src/lib/gssapi/krb5/util_seqnum.c | 129 |
1 files changed, 65 insertions, 64 deletions
diff --git a/src/lib/gssapi/krb5/util_seqnum.c b/src/lib/gssapi/krb5/util_seqnum.c index ec7da55672..3469e63edd 100644 --- a/src/lib/gssapi/krb5/util_seqnum.c +++ b/src/lib/gssapi/krb5/util_seqnum.c @@ -1,7 +1,8 @@ +/* -*- mode: c; indent-tabs-mode: nil -*- */ /* - * Copyright2001 by the Massachusetts Institute of Technology. + * Copyright2001 by the Massachusetts Institute of Technology. * Copyright 1993 by OpenVision Technologies, Inc. - * + * * Permission to use, copy, modify, distribute, and sell this software * and its documentation for any purpose is hereby granted without fee, * provided that the above copyright notice appears in all copies and @@ -11,7 +12,7 @@ * without specific, written prior permission. OpenVision makes no * representations about the suitability of this software for any * purpose. It is provided "as is" without express or implied warranty. - * + * * OPENVISION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO * EVENT SHALL OPENVISION BE LIABLE FOR ANY SPECIAL, INDIRECT OR @@ -30,76 +31,76 @@ krb5_error_code kg_make_seq_num(context, key, direction, seqnum, cksum, buf) - krb5_context context; - krb5_keyblock *key; - int direction; - krb5_ui_4 seqnum; - unsigned char *cksum; - unsigned char *buf; + krb5_context context; + krb5_keyblock *key; + int direction; + krb5_ui_4 seqnum; + unsigned char *cksum; + unsigned char *buf; { - unsigned char plain[8]; + unsigned char plain[8]; - plain[4] = direction; - plain[5] = direction; - plain[6] = direction; - plain[7] = direction; - if (key->enctype == ENCTYPE_ARCFOUR_HMAC ) { - /* Yes, Microsoft used big-endian sequence number.*/ - plain[0] = (seqnum>>24) & 0xff; - plain[1] = (seqnum>>16) & 0xff; - plain[2] = (seqnum>>8) & 0xff; - plain[3] = seqnum & 0xff; - return kg_arcfour_docrypt (key, 0, - cksum, 8, - &plain[0], 8, - buf); - - } - - plain[0] = (unsigned char) (seqnum&0xff); - plain[1] = (unsigned char) ((seqnum>>8)&0xff); - plain[2] = (unsigned char) ((seqnum>>16)&0xff); - plain[3] = (unsigned char) ((seqnum>>24)&0xff); + plain[4] = direction; + plain[5] = direction; + plain[6] = direction; + plain[7] = direction; + if (key->enctype == ENCTYPE_ARCFOUR_HMAC ) { + /* Yes, Microsoft used big-endian sequence number.*/ + plain[0] = (seqnum>>24) & 0xff; + plain[1] = (seqnum>>16) & 0xff; + plain[2] = (seqnum>>8) & 0xff; + plain[3] = seqnum & 0xff; + return kg_arcfour_docrypt (key, 0, + cksum, 8, + &plain[0], 8, + buf); - return(kg_encrypt(context, key, KG_USAGE_SEQ, cksum, plain, buf, 8)); + } + + plain[0] = (unsigned char) (seqnum&0xff); + plain[1] = (unsigned char) ((seqnum>>8)&0xff); + plain[2] = (unsigned char) ((seqnum>>16)&0xff); + plain[3] = (unsigned char) ((seqnum>>24)&0xff); + + return(kg_encrypt(context, key, KG_USAGE_SEQ, cksum, plain, buf, 8)); } krb5_error_code kg_get_seq_num(context, key, cksum, buf, direction, seqnum) - krb5_context context; - krb5_keyblock *key; - unsigned char *cksum; - unsigned char *buf; - int *direction; - krb5_ui_4 *seqnum; + krb5_context context; + krb5_keyblock *key; + unsigned char *cksum; + unsigned char *buf; + int *direction; + krb5_ui_4 *seqnum; { - krb5_error_code code; - unsigned char plain[8]; + krb5_error_code code; + unsigned char plain[8]; - if (key->enctype == ENCTYPE_ARCFOUR_HMAC) { - code = kg_arcfour_docrypt (key, 0, - cksum, 8, - buf, 8, - plain); - } else { - code = kg_decrypt(context, key, KG_USAGE_SEQ, cksum, buf, plain, 8); - } - if (code) - return(code); + if (key->enctype == ENCTYPE_ARCFOUR_HMAC) { + code = kg_arcfour_docrypt (key, 0, + cksum, 8, + buf, 8, + plain); + } else { + code = kg_decrypt(context, key, KG_USAGE_SEQ, cksum, buf, plain, 8); + } + if (code) + return(code); - if ((plain[4] != plain[5]) || - (plain[4] != plain[6]) || - (plain[4] != plain[7])) - return((krb5_error_code) KG_BAD_SEQ); + if ((plain[4] != plain[5]) || + (plain[4] != plain[6]) || + (plain[4] != plain[7])) + return((krb5_error_code) KG_BAD_SEQ); - *direction = plain[4]; - if (key->enctype == ENCTYPE_ARCFOUR_HMAC) { - *seqnum = (plain[3]|(plain[2]<<8) | (plain[1]<<16)| (plain[0]<<24)); - } else { - *seqnum = ((plain[0]) | - (plain[1]<<8) | - (plain[2]<<16) | - (plain[3]<<24)); - } + *direction = plain[4]; + if (key->enctype == ENCTYPE_ARCFOUR_HMAC) { + *seqnum = (plain[3]|(plain[2]<<8) | (plain[1]<<16)| (plain[0]<<24)); + } else { + *seqnum = ((plain[0]) | + (plain[1]<<8) | + (plain[2]<<16) | + (plain[3]<<24)); + } - return(0); + return(0); } |