Merge branch 'js/bisect-helper-check-get-oid-return-value' into maint
[git/git.git] / sha1dc / ubc_check.h
1 /***
2 * Copyright 2017 Marc Stevens <marc@marc-stevens.nl>, Dan Shumow <danshu@microsoft.com>
3 * Distributed under the MIT Software License.
4 * See accompanying file LICENSE.txt or copy at
5 * https://opensource.org/licenses/MIT
6 ***/
7
8 /*
9 // this file was generated by the 'parse_bitrel' program in the tools section
10 // using the data files from directory 'tools/data/3565'
11 //
12 // sha1_dvs contains a list of SHA-1 Disturbance Vectors (DV) to check
13 // dvType, dvK and dvB define the DV: I(K,B) or II(K,B) (see the paper)
14 // dm[80] is the expanded message block XOR-difference defined by the DV
15 // testt is the step to do the recompression from for collision detection
16 // maski and maskb define the bit to check for each DV in the dvmask returned by ubc_check
17 //
18 // ubc_check takes as input an expanded message block and verifies the unavoidable bitconditions for all listed DVs
19 // it returns a dvmask where each bit belonging to a DV is set if all unavoidable bitconditions for that DV have been met
20 // thus one needs to do the recompression check for each DV that has its bit set
21 */
22
23 #ifndef SHA1DC_UBC_CHECK_H
24 #define SHA1DC_UBC_CHECK_H
25
26 #if defined(__cplusplus)
27 extern "C" {
28 #endif
29
30 #ifndef SHA1DC_NO_STANDARD_INCLUDES
31 #include <stdint.h>
32 #endif
33
34 #define DVMASKSIZE 1
35 typedef struct { int dvType; int dvK; int dvB; int testt; int maski; int maskb; uint32_t dm[80]; } dv_info_t;
36 extern dv_info_t sha1_dvs[];
37 void ubc_check(const uint32_t W[80], uint32_t dvmask[DVMASKSIZE]);
38
39 #define DOSTORESTATE58
40 #define DOSTORESTATE65
41
42 #define CHECK_DVMASK(_DVMASK) (0 != _DVMASK[0])
43
44 #if defined(__cplusplus)
45 }
46 #endif
47
48 #ifdef SHA1DC_CUSTOM_TRAILING_INCLUDE_UBC_CHECK_H
49 #include SHA1DC_CUSTOM_TRAILING_INCLUDE_UBC_CHECK_H
50 #endif
51
52 #endif