p256

p256 v0.14.0 (#1890)

Added

• hash2curve implementation (#964)
• BatchInvert implementation (#971)
• EcdsaCurve trait impls (#1019)
• Implement From<NonZeroScalar> for Scalar (#1188)
• Implement TryFrom<Scalar> for NonZeroScalar (#1193)
• getrandom feature (#1521)
• Implement crypto_common::Generate trait (#1586)
• precomputed-tables feature (#1789, #1790, #1796)

Changed

• Edition changed to 2024 and MSRV bumped to 1.85 (#1125)
• Relax MSRV policy and allow MSRV bumps in patch releases
• Use U256 for MODULUS of FieldElement (#1153)
• Have FieldElement::to_canonical return U256 (#1154)
• Use primefield for FieldElement boilerplate (#1179, #1180)
• Update to elliptic-curve v0.14 (#1849)
• Use crypto-bigint to implement inversions (#1549, #1578)
• Bump sha2 dependency to v0.11 (#1712)
• Bump elliptic-curve dependency to v0.14 (#1849)
• Bump ecdsa to v0.17 (#1883)
• Bump primeorder to v0.14 (#1887)

Removed

• bits feature (#1766)
• expose-field feature: use FieldArithmetic trait instead (#1834)

Added

• hash2curve implementation (#964)
• BatchInvert implementation (#971)
• EcdsaCurve trait impls (#1019)
• Implement From<NonZeroScalar> for Scalar (#1188)
• Implement TryFrom<Scalar> for NonZeroScalar (#1193)
• getrandom feature (#1521)
• Implement crypto_common::Generate trait (#1586)
• basepoint-table feature (#1789, #1790, #1796)

Changed

• Edition changed to 2024 and MSRV bumped to 1.85 (#1125)
• Relax MSRV policy and allow MSRV bumps in patch releases
• Use U256 for MODULUS of FieldElement (#1153)
• Have FieldElement::to_canonical return U256 (#1154)
• Use primefield for FieldElement boilerplate (#1179, #1180)
• Update to elliptic-curve v0.14 (#1849)
• Use crypto-bigint to implement inversions (#1549, #1578)
• Bump sha2 dependency to v0.11 (#1712)
• Bump elliptic-curve dependency to v0.14 (#1849)
• Bump ecdsa to v0.17 (#1883)
• Bump primeorder to v0.14 (#1887)

Removed

• bits feature (#1766)
• expose-field feature: use FieldArithmetic trait instead (#1834)

Changed

• Enable pem feature by default (#832)

Fixed

• Have serde feature enable primeorder/serde (#851)

Changed

• Bump primeorder to v0.13.1 (#819)

Fixed

• Correct product definition for empty iterators (#802)

Added

• PrimeField constants/tests (#730, #737, #738)
• const fn inversions for all field elements (#736)

Changed

• FieldBytesEncoding trait impls (#732)
• Update hash2curve implementations to new API (#735)
• Impl Invert trait for Scalar types (#741)
• Bump ecdsa dependency to v0.16 (#770)
• Bump elliptic-curve dependency to v0.13 (#770)
• Bump primeorder dependency to v0.13 (#777)

Fixed

• Point compactabtility check (#772)

Added

• 32-bit scalar backend (#636)
• alloc feature (#670)
• Constructors for Scalar from u128 (#709)

Changed

• Use generic curve arithmetic implementation from primeorder crate (#631, #716)
• Use U256 as the inner type for FieldElement (#634)
• Update P-256 VOPRF test vectors (#693)
• Use weak feature activation; MSRV 1.60 (#701)
• Bump ecdsa dependency to v0.15 (#713)

Added

• Re-export low-level diffie_hellman function (#556)
• Additional RFC6979 test vectors (#591)

Changed

• Use a 4-bit window for scalar multiplication (#563)
• invert(), sqrt(): replace exponentiations with addition chains (#564)
• Use generic prime order formulas (#602)

Changed

• Bump digest to v0.10 (#515)
• Have pkcs8 feature activate ecdsa/pkcs8 (#538)
• Bump elliptic-curve to v0.12 (#544)
• Bump ecdsa to v0.14 (#544)

Added

• Impl ff::Field trait for FieldElement (#498)
• hash2curve support: impl GroupDigest trait for NistP256 (#503)
• Impl VoprfParameters trait for NistP256 (#506)
• Impl ReduceNonZero<U256> trait for Scalar (#507)
• IDENTITY and GENERATOR point constants (#509, #511)

Added

• Implement point compaction support (#357)
• Implement Scalar::sqrt (#392)
• Impl DefaultIsZeroes for ProjectivePoint (#414)
• Impl PrimeCurveArithmetic (#415)
• Impl Reduce<U256> for Scalar (#436)
• serde feature (#463, #465)
• Impl LinearCombination trait (#476)

Changed

• Use PrimeCurve trait (#413)
• Use sec1 crate for EncodedPoint type (#435)
• Replace ecdsa::hazmat::FromDigest with Reduce (#438)
• Make FromEncodedPoint return a CtOption (#445)
• Rust 2021 edition upgrade; MSRV 1.56+ (#453)
• Leverage generic ECDSA implementation from ecdsa crate ([#462])
• Bump elliptic-curve crate dependency to v0.11 (#466)
• Bump ecdsa crate dependency to v0.13 (#467)

Fixed

• ProjectivePoint::to_bytes() encoding for identity (#443)
• Handle identity point in GroupEncoding (#446)

Added

• AffineArithmetic trait impl (#347)
• PrimeCurve trait impls (#350)

Changed

• Bump elliptic-curve to v0.10; MSRV 1.51+ (#349)
• Bump ecdsa to v0.12 (#349)

Fixed

• Mixed coordinate addition with the point at infinity (#337)

Added

• jwk feature (#279)
• Wycheproof ECDSA P-256 test vectors (#313)
• Order constant (#328)

Changed

• Rename ecdsa::Asn1Signature to ::DerSignature (#288)
• Migrate to FromDigest trait from ecdsa crate (#292)
• Bump elliptic-curve to v0.9.2 (#296)
• Bump pkcs8 to v0.6 (#319)
• Bump ecdsa crate dependency to v0.11 (#330)

Fixed

• DigestPrimitive feature gating (#324)

Changed

• Make ecdsa a default feature (#325)

Changed

• Have std feature activate ecdsa-core/std (#273)

Fixed

• Trigger docs.rs rebuild with nightly bugfix (RustCrypto/traits#412)

Changed

• Bump elliptic-curve dependency to v0.8 (#260)
• Bump ecdsa to v0.10 (#260)

Added

• PKCS#8 support (#243, #244, #245)
• PublicKey type (#239)

Changed

• Bump elliptic-curve crate dependency to v0.7; MSRV 1.46+ (#247)
• Bump ecdsa crate dependency to v0.9 (#247)

Fixed

• Regenerate rustdoc on https://docs.rs after nightly breakage

Added

• SecretValue impl when arithmetic feature is disabled (#222)

Added

• ecdsa::Asn1Signature type alias (#186)
• ff and group crate dependencies; MSRV 1.44+ (#169, #174)
• AffinePoint::identity() and ::is_identity() (#167)

Changed

• Bump elliptic-curve crate to v0.6; ecdsa to v0.8 (#180)
• Refactor ProjectiveArithmetic trait (#179)
• Support generic inner type for elliptic_curve::SecretKey<C> (#177)
• Rename ElementBytes => FieldBytes (#176)
• Rename ecdsa::{Signer, Verifier} => ::{SigningKey, VerifyKey} (#153)
• Rename Curve::ElementSize => FieldSize (#150)
• Implement RFC6979 deterministic ECDSA (#146, #147)
• Rename PublicKey to EncodedPoint (#141)

Removed

• rand feature (#162)

Fixed

• Builds with either ecdsa-core or sha256 in isolation (#133)

Added

• ECDSA support (#73, #101, #104, #105)
• ECDSA public key recovery support (#110)
• OID support (#103, #113)
• Elliptic Curve Diffie-Hellman (#120)

Changed

• Bump elliptic-curve crate dependency to v0.5 (#126)

Changed

• Bump elliptic-curve crate dependency to v0.4 (#39)

Added

• Constant time scalar multiplication (#18)
• Group operation (#15)

• Initial release