Mercurial > dropbear
annotate src/mac/pmac/pmac_shift_xor.c @ 280:59400faa4b44 libtomcrypt-orig libtomcrypt-1.05
Re-import libtomcrypt 1.05 for cleaner propagating.
From crypt-1.05.tar.bz2, SHA1 of 88250202bb51570dc64f7e8f1c943cda9479258f
author | Matt Johnston <matt@ucc.asn.au> |
---|---|
date | Wed, 08 Mar 2006 12:58:00 +0000 |
parents | |
children | d5faf4814ddb |
rev | line source |
---|---|
280
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
2 * |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
3 * LibTomCrypt is a library that provides various cryptographic |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
4 * algorithms in a highly modular and flexible manner. |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
5 * |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
6 * The library is free for all purposes without any express |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
7 * guarantee it works. |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
8 * |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
9 * Tom St Denis, [email protected], http://libtomcrypt.org |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
10 */ |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
11 #include "tomcrypt.h" |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
12 |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
13 /** |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
14 @file pmac_shift_xor.c |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
15 PMAC implementation, internal function, by Tom St Denis |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
16 */ |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
17 |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
18 #ifdef PMAC |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
19 |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
20 /** |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
21 Internal function. Performs the state update (adding correct multiple) |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
22 @param pmac The PMAC state. |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
23 */ |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
24 void pmac_shift_xor(pmac_state *pmac) |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
25 { |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
26 int x, y; |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
27 y = pmac_ntz(pmac->block_index++); |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
28 #ifdef LTC_FAST |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
29 for (x = 0; x < pmac->block_len; x += sizeof(LTC_FAST_TYPE)) { |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
30 *((LTC_FAST_TYPE*)((unsigned char *)pmac->Li + x)) ^= |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
31 *((LTC_FAST_TYPE*)((unsigned char *)pmac->Ls[y] + x)); |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
32 } |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
33 #else |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
34 for (x = 0; x < pmac->block_len; x++) { |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
35 pmac->Li[x] ^= pmac->Ls[y][x]; |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
36 } |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
37 #endif |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
38 } |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
39 |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
40 #endif |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
41 |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
42 /* $Source: /cvs/libtom/libtomcrypt/src/mac/pmac/pmac_shift_xor.c,v $ */ |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
43 /* $Revision: 1.4 $ */ |
59400faa4b44
Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
44 /* $Date: 2005/05/05 14:35:59 $ */ |