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+# Changelog
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## 0.12.3 (2022-02-17)
+### Fixed
+- Minimal versions build ([#63])
+
+[#63]: https://github.com/RustCrypto/KDFs/pull/63
+
+## 0.12.2 (2022-01-27)
+### Fixed
+- Re-export `InvalidLength` and `InvalidPrkLength` ([#59])
+
+[#59]: https://github.com/RustCrypto/KDFs/pull/59
+
+## 0.12.1 (2022-01-27) [YANKED]
+### Added
+- Ability to switch HMAC implementation to `SimpleHmac` with respective `SimpleHkdfExtract` and `SimpleHkdf` aliases ([#57])
+
+[#57]: https://github.com/RustCrypto/KDFs/pull/55
+
+## 0.12.0 (2021-12-07)
+### Changed
+- Bump `hmac` crate dependency to v0.12 and `digest` to v0.10 ([#52])
+
+[#52]: https://github.com/RustCrypto/KDFs/pull/52
+
+## 0.11.0 (2021-04-29)
+### Added
+- Wycheproof HKDF test vectors ([#49])
+
+### Changed
+- Bump `hmac` crate dependency to v0.11 ([#50])
+
+### Fixed
+- HKDF-Extract with empty salt ([#46])
+
+[#46]: https://github.com/RustCrypto/KDFs/pull/46
+[#49]: https://github.com/RustCrypto/KDFs/pull/49
+[#50]: https://github.com/RustCrypto/KDFs/pull/50
+
+## 0.10.0 (2020-10-26)
+### Changed
+- Bump `hmac` dependency to v0.10 ([#40])
+
+[#40]: https://github.com/RustCrypto/KDFs/pull/40
+
+## 0.9.0 (2020-06-22)
+### Added
+- Multipart features for HKDF-Extract and HKDF-Expand ([#34])
+
+### Changed
+- Bump `digest` v0.9; `hmac` v0.9 ([#35])
+
+[#34]: https://github.com/RustCrypto/KDFs/pull/34
+[#35]: https://github.com/RustCrypto/KDFs/pull/35
+
+## 0.8.0 (2019-07-26)
+### Added
+- `Hkdf::from_prk()`, `Hkdf::extract()`
+
+## 0.7.1 (2019-07-15)
+
+## 0.7.0 (2018-10-16)
+### Changed
+- Update digest to 0.8 
+- Refactor for API changes
+
+### Removed  
+- Redundant `generic-array` crate.
+
+## 0.6.0 (2018-08-20)
+### Changed
+- The `expand` signature has changed.
+  
+### Removed
+- `std` requirement 
+
+## 0.5.0 (2018-05-20)
+### Fixed
+- Omitting HKDF salt.
+
+### Removed
+- Deprecated interface
+
+## 0.4.0 (2018-03-20
+### Added
+- Benchmarks
+- derive `Clone`
+
+### Changed
+- RFC-inspired interface 
+- Reduce heap allocation
+- Bump deps: hex-0.3
+
+### Removed
+- Unnecessary mut
+
+## 0.3.0 (2017-11-29)
+### Changed
+- update dependencies: digest-0.7, hmac-0.5
+
+## 0.2.0 (2017-09-21)
+### Fixed
+- Support for rustc 1.20.0
+
+## 0.1.2 (2017-09-21)
+### Fixed
+- Support for rustc 1.5.0
+
+## 0.1.0 (2017-09-21)
+- Initial release