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‎CHANGELOG.md

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@@ -4,6 +4,229 @@ All notable changes to this project will be documented in this file.
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The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
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and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
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## 0.6.0 (2025-01-22)
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### Added
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- `TryFrom<&[u8]>` bound on `Encoding::Repr` ([#261])
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- New `Uint` functionality:
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- New methods: `bitand_limb` ([#322]), `gcd` ([#472]), `from_str_radix_vartime` ([#603]),
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`to_string_radix_vartime` ([#659])
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- New trait impls: `MulMod` ([#313]), `Div`/`Rem` ([#720])
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- New `BoxedUint` functionality:
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- New methods: `sbb`/`wrapping_sub`/`checked_sub` ([#303]), `mul` ([#306]),
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`from_be_slice`/`from_le_slice` ([#307]), `to_be_bytes`/`to_le_bytes` ([#308]),
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`bits` ([#328]), `conditional_select` ([#329]), `shl_vartime` ([#330]), `shr_vartime` ([#331]),
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`rem_vartime` ([#332]), `inv_mod2k`/`bitor` ([#334]), `pow` ([#337]), `inv_mod` ([#341]),
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`random` ([#349]), `cond_map`/`cond_and_then` ([#352]), `map_limbs` ([#357]),
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`div_rem`/`rem` ([#398]), `new_with_arc` ([#407]), `gcd` ([#497]),
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`from_str_radix_vartime` ([#603]), `to_string_radix_vartime` ([#659])
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- New trait impls: `BitAnd*` ([#314]), `ConstantTimeGreater/Less`/`PartialOrd/Ord` ([#316]),
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`AddMod` ([#317]), `SubMod` ([#320]), `Hash`/`BoxedUint` ([#350]),
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`MulMod`/`BoxedUint` ([#343]), `RandomMod` ([#349]), `Rem` ([#356]), `BitNot`/`BitXor` ([#358]),
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`CheckedMul`/`Mul` ([#361]), `NegMod` ([#362]), `Div` ([#366]), `Integer` ([#367])
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- Montgomery multiplication support ([#323])
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- New traits: `FixedInteger` ([#363]), `CheckedDiv` ([#369]), `WideningMul` ([#371]),
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`ConstantTimeSelect` ([#454]), `SquareAssign` ([#431]), `Gcd` ([#499]),
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`DivRemLimb`/`RemLimb` ([#496]), `InvMod` ([#505], [#741]), `SquareRoot` ([#508]),
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`BitOperations` ([#507]), `ShrVartime`/`ShlVartime` ([#509]), `RandomBits` ([#510]),
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`RemMixed` ([#746])
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- `num-traits` impls: `Wrapping*` ([#425]), `Zero`/`One` ([#433]), `ConstZero` ([#573]),
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`Num` ([#720])
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- safegcd (Bernstein-Yang) GCD + inv mod algorithm ([#372], [#493], [#632], [#635], [#655])
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- Constant-time square root and division ([#376])
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- Implement `Zeroize` for `NonZero` wrapper ([#406])
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- `Zero::set_zero` method ([#426])
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- `Inverter`/`PrecomputeInverter` traits ([#438], [#444])
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- Uint: `const fn` encoders ([#453])
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- Traits to connect integers and Montgomery form representations ([#431]):
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- `Integer::Monty` associated type
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- `Monty` trait with arithmetic bounds and an associated `Monty::Integer` type
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- `Odd` wrapper type ([#487])
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- `NonZero::new_unwrap` ([#602])
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- Implement Karatsuba multiplication for `Uint` and `BoxedUint` ([#649])
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- Efficient linear combination for Montgomery forms ([#666])
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- Doc comment support for `impl_modulus!` ([#676])
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- `core::error::Error` support ([#680])
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- `Int` type providing initial signed integer support using two's complement ([#695], [#730])
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- Variable-time modular inversion support ([#731])
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### Changed
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- Toplevel `modular` module now contains all modular functionality ([#300], [#324])
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- `Integer` trait: expand bounds to include `*Mod` ([#318]), `Add`/`Sub`/`Mul` ([#435]),
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`RemAssign` ([#709]), `AddAssign`/`MulAssign`/`SubAssign` ([#716])
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- `Integer` trait: add new methods `bits(_vartime)`/`leading_zeros` ([#368]),
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`from_limb_like/`one_like`/`zero_like` ([#533])
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- Replace `BoxedUint::new` with `::zero_with_precision` ([#327])
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- Split `Zero` trait into `Zero` + `ZeroConstant` ([#335])
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- Refactor `Integer` trait; add `Constants`/`LimbsConstant` ([#355])
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- The existing `Bounded` trait subsumes `BITS`/`BYTES`
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- `Constants` provides `ONE` and `MAX`
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- `LimbsConstant` provides `LIMBS`
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- Rename `BoxedUint::mul_wide` to `mul` ([#359])
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- Round up `bits_precision` when creating `BoxedUint` ([#365])
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- Make bit ops use `u32` for shifts and bit counts ([#373])
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- Align with `core`/`std` on overflow behavior for bit shifts ([#395])
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- Make `inv_mod2k(_vartime)` return a `CtChoice` ([#416])
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- Rename `CtChoice` to `ConstChoice` ([#417])
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- Make division methods take `NonZero`-wrapped divisors ([#419])
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- Align with `core`/`std` on `overflowing_sh*` for functions which return an overflow flag ([#430])
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- `Uint`: rename `HLIMBS` to `RHS_LIMBS` ([#432])
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- Bring `Checked*` traits in line with `Wrapping*` ([#434])
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- Rename `*Residue*` types i.e. Montgomery form representations ([#485]):
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- `Residue` -> `ConstMontyForm`
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- `DynResidue` -> `MontyForm`
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- `BoxedResidue` -> `BoxedMontyForm`
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- `*ResidueParams` -> `*MontyParams`
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- `residue_params` -> `params`
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- `params.r` -> `params.one`
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- Make `Monty::new_params()` take an `Odd`-wrapped modulus ([#488])
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- Expand `Uint` support for `const fn`: `square` ([#514]), `widening_mul` ([#515]),
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`to_le_bytes` ([#555])
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- Have `(Boxed)MontyParams::modulus` return `&Odd<_>` ([#517])
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- Split `MontyParams::new` and `new_vartime` ([#516], [#518])
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- Reverse `Concat(Mixed)`/`Split(Mixed)` argument ordering ([#526])
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- Migrate from `generic-array` to `hybrid-array` ([#544])
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- Replace `ZeroConstant` with `ConstZero` trait from `num-traits` ([#546], [#573])
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- Change `Uint::concat_mixed` and `split_mixed` to accept `self`; make `pub` ([#556], [#558])
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- Make `Uint::concat` and `split` const generic over inputs ([#557], [#558])
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- Split `Uint::mul_mod` and `Uint::mul_mod_vartime` ([#623])
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- Faster constant-time division ([#643])
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- `BoxedMontyForm`: always use `Arc` for `params` ([#645])
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- Leverage `const_mut_refs`; MSRV 1.83 ([#667])
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- Bump `rlp` dependency from 0.5 to 0.6 ([#673])
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- Require `RngCore` instead of `CryptoRngCore` for various random methods ([#710])
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- Bump `serdect` dependency to v0.3 ([#719])
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- Have `rand` feature enable `rand_core/getrandom` instead of `rand_core/std` ([#745])
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### Fixed
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- Argument ordering to `BoxedUint::chain` ([#315])
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- Modulus leading zeros calculation for `MontyForm`/`BoxedMontyForm` ([#713])
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### Removed
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- `ct_*` prefixes from method names since we're constant-time by default ([#417])
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- `const_assert_*` macros ([#452], [#690])
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[#261]: https://github.com/RustCrypto/crypto-bigint/pull/261
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[#300]: https://github.com/RustCrypto/crypto-bigint/pull/300
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[#303]: https://github.com/RustCrypto/crypto-bigint/pull/303
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[#306]: https://github.com/RustCrypto/crypto-bigint/pull/306
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[#307]: https://github.com/RustCrypto/crypto-bigint/pull/307
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[#308]: https://github.com/RustCrypto/crypto-bigint/pull/308
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[#313]: https://github.com/RustCrypto/crypto-bigint/pull/313
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[#314]: https://github.com/RustCrypto/crypto-bigint/pull/314
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[#315]: https://github.com/RustCrypto/crypto-bigint/pull/315
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[#316]: https://github.com/RustCrypto/crypto-bigint/pull/316
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[#317]: https://github.com/RustCrypto/crypto-bigint/pull/317
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[#318]: https://github.com/RustCrypto/crypto-bigint/pull/318
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[#320]: https://github.com/RustCrypto/crypto-bigint/pull/320
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[#322]: https://github.com/RustCrypto/crypto-bigint/pull/322
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[#323]: https://github.com/RustCrypto/crypto-bigint/pull/323
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[#324]: https://github.com/RustCrypto/crypto-bigint/pull/324
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[#327]: https://github.com/RustCrypto/crypto-bigint/pull/327
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[#328]: https://github.com/RustCrypto/crypto-bigint/pull/328
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[#329]: https://github.com/RustCrypto/crypto-bigint/pull/329
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[#330]: https://github.com/RustCrypto/crypto-bigint/pull/330
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[#331]: https://github.com/RustCrypto/crypto-bigint/pull/331
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[#332]: https://github.com/RustCrypto/crypto-bigint/pull/332
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[#334]: https://github.com/RustCrypto/crypto-bigint/pull/334
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[#335]: https://github.com/RustCrypto/crypto-bigint/pull/335
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[#337]: https://github.com/RustCrypto/crypto-bigint/pull/337
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[#341]: https://github.com/RustCrypto/crypto-bigint/pull/341
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[#343]: https://github.com/RustCrypto/crypto-bigint/pull/343
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[#349]: https://github.com/RustCrypto/crypto-bigint/pull/349
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[#350]: https://github.com/RustCrypto/crypto-bigint/pull/350
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[#352]: https://github.com/RustCrypto/crypto-bigint/pull/352
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[#355]: https://github.com/RustCrypto/crypto-bigint/pull/355
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[#356]: https://github.com/RustCrypto/crypto-bigint/pull/356
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[#357]: https://github.com/RustCrypto/crypto-bigint/pull/357
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[#358]: https://github.com/RustCrypto/crypto-bigint/pull/358
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[#359]: https://github.com/RustCrypto/crypto-bigint/pull/359
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[#361]: https://github.com/RustCrypto/crypto-bigint/pull/361
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[#362]: https://github.com/RustCrypto/crypto-bigint/pull/362
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[#363]: https://github.com/RustCrypto/crypto-bigint/pull/363
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[#365]: https://github.com/RustCrypto/crypto-bigint/pull/365
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[#366]: https://github.com/RustCrypto/crypto-bigint/pull/366
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[#367]: https://github.com/RustCrypto/crypto-bigint/pull/367
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[#368]: https://github.com/RustCrypto/crypto-bigint/pull/368
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[#369]: https://github.com/RustCrypto/crypto-bigint/pull/369
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[#371]: https://github.com/RustCrypto/crypto-bigint/pull/371
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[#372]: https://github.com/RustCrypto/crypto-bigint/pull/372
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[#373]: https://github.com/RustCrypto/crypto-bigint/pull/373
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[#376]: https://github.com/RustCrypto/crypto-bigint/pull/376
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[#395]: https://github.com/RustCrypto/crypto-bigint/pull/395
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[#398]: https://github.com/RustCrypto/crypto-bigint/pull/398
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[#406]: https://github.com/RustCrypto/crypto-bigint/pull/406
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[#407]: https://github.com/RustCrypto/crypto-bigint/pull/407
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[#416]: https://github.com/RustCrypto/crypto-bigint/pull/416
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[#417]: https://github.com/RustCrypto/crypto-bigint/pull/417
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[#419]: https://github.com/RustCrypto/crypto-bigint/pull/419
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[#425]: https://github.com/RustCrypto/crypto-bigint/pull/425
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[#426]: https://github.com/RustCrypto/crypto-bigint/pull/426
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[#430]: https://github.com/RustCrypto/crypto-bigint/pull/430
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[#431]: https://github.com/RustCrypto/crypto-bigint/pull/431
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[#432]: https://github.com/RustCrypto/crypto-bigint/pull/432
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[#433]: https://github.com/RustCrypto/crypto-bigint/pull/433
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[#434]: https://github.com/RustCrypto/crypto-bigint/pull/434
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[#435]: https://github.com/RustCrypto/crypto-bigint/pull/435
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[#438]: https://github.com/RustCrypto/crypto-bigint/pull/438
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[#444]: https://github.com/RustCrypto/crypto-bigint/pull/444
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[#452]: https://github.com/RustCrypto/crypto-bigint/pull/452
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[#453]: https://github.com/RustCrypto/crypto-bigint/pull/453
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[#454]: https://github.com/RustCrypto/crypto-bigint/pull/454
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[#472]: https://github.com/RustCrypto/crypto-bigint/pull/472
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[#485]: https://github.com/RustCrypto/crypto-bigint/pull/485
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[#487]: https://github.com/RustCrypto/crypto-bigint/pull/487
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[#488]: https://github.com/RustCrypto/crypto-bigint/pull/488
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[#493]: https://github.com/RustCrypto/crypto-bigint/pull/493
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[#496]: https://github.com/RustCrypto/crypto-bigint/pull/496
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[#497]: https://github.com/RustCrypto/crypto-bigint/pull/497
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[#499]: https://github.com/RustCrypto/crypto-bigint/pull/499
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[#505]: https://github.com/RustCrypto/crypto-bigint/pull/505
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[#507]: https://github.com/RustCrypto/crypto-bigint/pull/507
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[#508]: https://github.com/RustCrypto/crypto-bigint/pull/508
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[#509]: https://github.com/RustCrypto/crypto-bigint/pull/509
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[#510]: https://github.com/RustCrypto/crypto-bigint/pull/510
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[#514]: https://github.com/RustCrypto/crypto-bigint/pull/514
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[#515]: https://github.com/RustCrypto/crypto-bigint/pull/515
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[#517]: https://github.com/RustCrypto/crypto-bigint/pull/517
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[#518]: https://github.com/RustCrypto/crypto-bigint/pull/518
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[#526]: https://github.com/RustCrypto/crypto-bigint/pull/526
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[#533]: https://github.com/RustCrypto/crypto-bigint/pull/533
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[#544]: https://github.com/RustCrypto/crypto-bigint/pull/544
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[#546]: https://github.com/RustCrypto/crypto-bigint/pull/546
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[#555]: https://github.com/RustCrypto/crypto-bigint/pull/555
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[#556]: https://github.com/RustCrypto/crypto-bigint/pull/556
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[#557]: https://github.com/RustCrypto/crypto-bigint/pull/557
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[#558]: https://github.com/RustCrypto/crypto-bigint/pull/558
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[#573]: https://github.com/RustCrypto/crypto-bigint/pull/573
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[#602]: https://github.com/RustCrypto/crypto-bigint/pull/602
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[#603]: https://github.com/RustCrypto/crypto-bigint/pull/603
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[#623]: https://github.com/RustCrypto/crypto-bigint/pull/623
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[#632]: https://github.com/RustCrypto/crypto-bigint/pull/632
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[#635]: https://github.com/RustCrypto/crypto-bigint/pull/635
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[#643]: https://github.com/RustCrypto/crypto-bigint/pull/643
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[#645]: https://github.com/RustCrypto/crypto-bigint/pull/645
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[#649]: https://github.com/RustCrypto/crypto-bigint/pull/649
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[#655]: https://github.com/RustCrypto/crypto-bigint/pull/655
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[#659]: https://github.com/RustCrypto/crypto-bigint/pull/659
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[#666]: https://github.com/RustCrypto/crypto-bigint/pull/666
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[#667]: https://github.com/RustCrypto/crypto-bigint/pull/667
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[#673]: https://github.com/RustCrypto/crypto-bigint/pull/673
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[#676]: https://github.com/RustCrypto/crypto-bigint/pull/676
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[#680]: https://github.com/RustCrypto/crypto-bigint/pull/680
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[#690]: https://github.com/RustCrypto/crypto-bigint/pull/690
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[#695]: https://github.com/RustCrypto/crypto-bigint/pull/695
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[#709]: https://github.com/RustCrypto/crypto-bigint/pull/709
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[#710]: https://github.com/RustCrypto/crypto-bigint/pull/710
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[#713]: https://github.com/RustCrypto/crypto-bigint/pull/713
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[#716]: https://github.com/RustCrypto/crypto-bigint/pull/716
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[#719]: https://github.com/RustCrypto/crypto-bigint/pull/719
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[#720]: https://github.com/RustCrypto/crypto-bigint/pull/720
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[#730]: https://github.com/RustCrypto/crypto-bigint/pull/730
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[#731]: https://github.com/RustCrypto/crypto-bigint/pull/731
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[#741]: https://github.com/RustCrypto/crypto-bigint/pull/741
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[#745]: https://github.com/RustCrypto/crypto-bigint/pull/745
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[#746]: https://github.com/RustCrypto/crypto-bigint/pull/746
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## 0.5.5 (2023-11-18)
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### Added
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- Multi-exponentiation ([#248])

‎Cargo.lock

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‎Cargo.toml

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[package]
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name = "crypto-bigint"
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version = "0.6.0-rc.8"
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version = "0.6.0"
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description = """
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Pure Rust implementation of a big integer library which has been designed from
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the ground-up for use in cryptographic applications. Provides constant-time,

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