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a0103914c2
Update sha1dc from the latest version by the upstream
maintainer[1].
This version includes a commit of mine which allows for replacing the
local modifications done to the upstream files in git.git with macro
definitions to monkeypatch it in place.
It also brings in a change[2] upstream made for the breakage 2.13.0
introduced on SPARC and other platforms that forbid unaligned
access[3].
This means that the code customizations done since the initial import
in commit 28dc98e343 ("sha1dc: add collision-detecting sha1
implementation", 2017-03-16) can be done purely via Makefile
definitions and by including the content of our own sha1dc_git.[ch] in
sha1dc/sha1.c via a macro.
1. cc465543b3
2. 33a694a9ee
3. "Git 2.13.0 segfaults on Solaris SPARC due to DC_SHA1=YesPlease
being on by default"
(https://public-inbox.org/git/CACBZZX6nmKK8af0-UpjCKWV4R+hV-uk2xWXVA5U+_UQ3VXU03g@mail.gmail.com/)
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
53 lines
1.7 KiB
C
53 lines
1.7 KiB
C
/***
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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 SHA1DC_UBC_CHECK_H
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#define SHA1DC_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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#ifndef SHA1DC_NO_STANDARD_INCLUDES
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#include <stdint.h>
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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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#ifdef SHA1DC_CUSTOM_TRAILING_INCLUDE_UBC_CHECK_H
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#include SHA1DC_CUSTOM_TRAILING_INCLUDE_UBC_CHECK_H
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#endif
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#endif
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