45 lines
1.5 KiB
C
45 lines
1.5 KiB
C
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/***
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* Copyright 2017 Marc Stevens <marc@marc-stevens.nl>, Dan Shumow <danshu@microsoft.com>
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* Distributed under the MIT Software License.
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* See accompanying file LICENSE.txt or copy at
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* https://opensource.org/licenses/MIT
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***/
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/*
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// this file was generated by the 'parse_bitrel' program in the tools section
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// using the data files from directory 'tools/data/3565'
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//
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// sha1_dvs contains a list of SHA-1 Disturbance Vectors (DV) to check
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// dvType, dvK and dvB define the DV: I(K,B) or II(K,B) (see the paper)
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// dm[80] is the expanded message block XOR-difference defined by the DV
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// testt is the step to do the recompression from for collision detection
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// maski and maskb define the bit to check for each DV in the dvmask returned by ubc_check
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//
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// ubc_check takes as input an expanded message block and verifies the unavoidable bitconditions for all listed DVs
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// it returns a dvmask where each bit belonging to a DV is set if all unavoidable bitconditions for that DV have been met
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// thus one needs to do the recompression check for each DV that has its bit set
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*/
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#ifndef UBC_CHECK_H
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#define UBC_CHECK_H
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#if defined(__cplusplus)
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extern "C" {
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#endif
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#define DVMASKSIZE 1
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typedef struct { int dvType; int dvK; int dvB; int testt; int maski; int maskb; uint32_t dm[80]; } dv_info_t;
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extern dv_info_t sha1_dvs[];
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void ubc_check(const uint32_t W[80], uint32_t dvmask[DVMASKSIZE]);
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#define DOSTORESTATE58
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#define DOSTORESTATE65
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#define CHECK_DVMASK(_DVMASK) (0 != _DVMASK[0])
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#if defined(__cplusplus)
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}
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#endif
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#endif /* UBC_CHECK_H */
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