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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 | // this file was generated by the 'parse_bitrel' program in the tools section | |
9 | // using the data files from directory 'tools/data/3565' | |
10 | // | |
11 | // sha1_dvs contains a list of SHA-1 Disturbance Vectors (DV) to check | |
12 | // dvType, dvK and dvB define the DV: I(K,B) or II(K,B) (see the paper) | |
13 | // dm[80] is the expanded message block XOR-difference defined by the DV | |
14 | // testt is the step to do the recompression from for collision detection | |
15 | // maski and maskb define the bit to check for each DV in the dvmask returned by ubc_check | |
16 | // | |
17 | // ubc_check takes as input an expanded message block and verifies the unavoidable bitconditions for all listed DVs | |
18 | // it returns a dvmask where each bit belonging to a DV is set if all unavoidable bitconditions for that DV have been met | |
19 | // thus one needs to do the recompression check for each DV that has its bit set | |
20 | ||
21 | #ifndef UBC_CHECK_H | |
22 | #define UBC_CHECK_H | |
23 | ||
24 | #include <stdint.h> | |
25 | ||
26 | #define DVMASKSIZE 1 | |
27 | typedef struct { int dvType; int dvK; int dvB; int testt; int maski; int maskb; uint32_t dm[80]; } dv_info_t; | |
28 | extern dv_info_t sha1_dvs[]; | |
29 | void ubc_check(const uint32_t W[80], uint32_t dvmask[DVMASKSIZE]); | |
30 | ||
31 | #define DOSTORESTATE58 | |
32 | #define DOSTORESTATE65 | |
33 | ||
34 | ||
35 | #endif // UBC_CHECK_H |