k256 v0.14.0

[tarcieri]

Added

• Support for non-32-byte BIP340 signatures (#1041)
• Implement From<NonZeroScalar> for Scalar (#1188)
• Implement From<NonIdentity> for Projective/AffinePoint (#1190)
• Implement MultipartSigner/Verifier (#1221)
• Support hash2curve crate (#[1286])
• Implement FromUniformBytes<64> for Scalar (#1379)
• Implement CofactorGroup for ProjectivePoint (#1394)
• Implement AffineCoordinates::from_coordinates (#1405)
• getrandom feature (#1521)
• Conversions to/from U256 for field elements (#1552)
• Implement crypto_common::Generate trait (#1586)

Changed

• Edition changed to 2024 and MSRV bumped to 1.85 (#1125)
• Relax MSRV policy and allow MSRV bumps in patch releases
• Expose AffineCoordinates::y (#1230)
• Use rejection sampling for random point generation (#1344)
• Use new Reduce trait (#1359)
• Update Curve::ORDER to be Odd (#1416)
• Factor apart Schnorr from_bytes/from_slice methods (#1429)
• Use crypto-bigint to implement inversions (#1554, #1573)
• Bump sha2 dependency to v0.11 (#1712)
• Variable-time scalar multiplication support (#1714, #1715, #1728, #1730, #1745, #1812, #1816, #1819, #1823, #1884)
• Bump signature dependency to v3 (#1756)
• Bump elliptic-curve dependency to v0.14 (#1849)
• Bump ecdsa to v0.17 (#1883)

Removed

• bits feature (#1766)
• expose-field feature in favor of FieldArithmetic trait (#1834)

Fixed

• Use normalizes_to_zero in batch normalization (#1029)
• Panics when parsing malformed Schnorr signatures (#1056)
• BatchInvert impl for FieldElement could compute non-normalized results (#1862)
• Have Schnorr signing reduce k mod n (#1898)