Differential D1192

Implement a flag to trigger replay protection when passed down to SignatureHash
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Authored by deadalnix on Mar 12 2018, 20:05.

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T301: Automatic Future Hardfork Replay Protection

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rSTAGING306b4f9c13ca: Implement a flag to trigger replay protection when passed down to SignatureHash
rABC306b4f9c13ca: Implement a flag to trigger replay protection when passed down to SignatureHash

Summary

This will allow to enable replay protection at any point in time.

Test Plan

Extend sighash_test to test for sighash generation with various sets of flags instead of just one.

Depends on D1190, D1191

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rABC Bitcoin ABC

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Event Timeline

deadalnix created this revision.Mar 12 2018, 20:05

Herald added a reviewer: Restricted Project. · View Herald TranscriptMar 12 2018, 20:05

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Harbormaster completed remote builds in B2054: Diff 3158.Mar 12 2018, 20:24

deadalnix added a child revision: D1193: Add script tests for the replay protection mechanism.Mar 12 2018, 21:24

jasonbcox requested changes to this revision.Mar 13 2018, 21:47

jasonbcox added a subscriber: jasonbcox.

jasonbcox added inline comments.

src/script/interpreter.cpp
1354 ↗	(On Diff #3158)	Add a comment explaining the intention here. It looks like it's intended to scramble values greater than 1-byte in size, but I'm not sure.
src/test/sighash_tests.cpp
149 ↗	(On Diff #3158)	Shouldn't this one be shold? Seems backwards looking at the function name.
151 ↗	(On Diff #3158)	If you don't want to name the above variable shold, then maybe call this one shnoReplay to make it clearer?

This revision now requires changes to proceed.Mar 13 2018, 21:47

deadalnix requested review of this revision.Mar 14 2018, 09:28

deadalnix added inline comments.

src/test/sighash_tests.cpp
149 ↗	(On Diff #3158)	No, this is the hash of the reference implementation.
151 ↗	(On Diff #3158)	It is the old (aka pre fork) way of computing the hash. It should match the reference implementation.

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Harbormaster completed remote builds in B2068: Diff 3178.Mar 14 2018, 09:53

Add comment explaining the replay protection in SignatureHash and add extra tests for it.

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Harbormaster completed remote builds in B2069: Diff 3179.Mar 14 2018, 14:02

jasonbcox accepted this revision.Mar 14 2018, 15:04

This revision is now accepted and ready to land.Mar 14 2018, 15:04

Reduce the scope of some variables.

Closed by commit rABC306b4f9c13ca: Implement a flag to trigger replay protection when passed down to SignatureHash (authored by deadalnix). · Explain WhyMar 14 2018, 15:08

This revision was automatically updated to reflect the committed changes.

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Harbormaster completed remote builds in B2072: Diff 3182.Mar 14 2018, 15:29

schancel added a task: T301: Automatic Future Hardfork Replay Protection.Mar 15 2018, 14:50

nakihito mentioned this in D3671: Merge #10777: [tests] Avoid redundant assignments. Remove unused variables.Jul 15 2019, 22:28

Revision Contents
Changeset List

Path

Size

src/

script/

4 lines

interpreter.cpp

8 lines

test/

data/

2005 lines

sighash_tests.cpp

97 lines

Diff 3183

src/script/interpreter.h

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src/script/interpreter.cpp

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src/test/data/sighash.json

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src/test/sighash_tests.cpp

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