Constant time#591

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thehoul wants to merge 63 commits into

int32-reviewedfrom

int32-repro-cpy

Commits on Nov 24, 2025

fixAfterAPIBreak

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ThreesholdsArePositive

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ThreesholdsArePositive
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compatibleAndMergeReports

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Copied over filosottile/bigmod

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Added build tags for non-constant time algorithms

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Refactor Const and Vartime Tests and GroupOrder becomes a big/Int

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Compatible_Mod

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Mod Int Migrates to compatible

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fix rebase error
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fixAfterAPIBreak

ValeriodeSa
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ThreesholdsArePositive

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compatibleInt

ValeriodeSa
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compatibleAndMergeReports

ValeriodeSa
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Added build tags for non-constant time algorithms

ValeriodeSa
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Compatible_Mod

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Mod Int's Value becomes a Pointer

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Use big/Int instead of compatible/Int in vartime only files

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Mod/Int's V, CompatibleMod/Mod and Compatible/Int have direct values

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Constant Time Int also gets a direct value

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Refactoring for constant-time compatibility

ValeriodeSa
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const_int: +3 functions to implement and a sketch for Bytes

ValeriodeSa
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Refactoring for constant-time compatibility

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Implemented FillBytes as in saferith.Nat

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SetString gets a new modulus parameter to define its size for constant-time

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Bytes gets a new modulus parameter to define its size for constant-time

ValeriodeSa
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ModInverse gets a constant-time implementation, from edwards25519/scalar.go

ValeriodeSa
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rand/Int uses big/Int again

ValeriodeSa
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took Bit(i) implementation from big.nat

ValeriodeSa
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Tests and debug for constant-time operations

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Clean-up of mod/constant_time_int.go Pick function, implemented using random.Int

ValeriodeSa
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small fixes in mod/constant_time_int.go operations

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Tests and debug for group/mod/constant_time_int.go

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More fixes and tests for the constant-time implementation

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modify twoExp256 related internal constants to adapt to a larger needed size

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Fixed compatible.Prime

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SetBytesBigBuffer to create a bigmod/nat from a longer buffer

ValeriodeSa
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Fixed a bug in pub_nat/SetBytesBigBuffer

ValeriodeSa
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fix rebase error
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remove duplicate line in test.yml and use matrix for constant vs var time
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fix failing test
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fix build with constantTime tag failling
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Commits on Nov 26, 2025

simplify test workflow
thehoul
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Commits on Dec 11, 2025

Commits on Dec 12, 2025