hkdf

HMAC-based Extract-and-Expand Key Derivation Function (HKDF)

0.13.0 237M downloads/mo #438 most downloaded on crates.io RustCrypto/KDFs

What this package is like to depend on

Last release 4 months ago

30 Mar 2026

Release timing varies

gaps range from 8 days to 7 months

Most releases are documented

notes for 17 of 19 stable releases

Nothing withdrawn

no release was ever pulled

12 years old

34 releases · first in 2015

7 releases in the last 12 months

see the full history below

Release timeline

34 releases · Jan 2015 to Mar 2026

2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Release Pre-release

Releases

latest 34

0.13.0 30 Mar 2026
Release notes
Added
- New Hkdf and HkdfExtract type aliases for GenericHkdf and
  GenericHkdfExtract (#155)
- Implement kdf::Kdf for GenericHkdfExtract (#173)
Changed
- Bump MSRV to 1.85 and edition to 2024 (#114)
- Bump hmac dependency to v0.13
- Use digest::EagerHash (#148)
- Unseal HmacImpl trait (#154)
- Rename Hkdf and HkdfExtract to GenericHkdf and
  GenericHkdfExtract respectively (#155)
- Use simplified H: HmacImpl bounds (#155)
Removed
- std crate feature (#105)
Open source →
Release notes
Added
- New Hkdf and HkdfExtract type aliases for GenericHkdf and GenericHkdfExtract (#155)
- Implement kdf::Kdf for GenericHkdfExtract (#173)
Changed
- Bump MSRV to 1.85 and edition to 2024 (#114)
- Bump hmac dependency to v0.13
- Use digest::EagerHash (#148)
- Unseal HmacImpl trait (#154)
- Rename Hkdf and HkdfExtract to GenericHkdf and GenericHkdfExtract respectively (#155)
- Use simplified H: HmacImpl bounds (#155)
Removed
- std crate feature (#105)
Open source →
0.13.0-rc.6 29 Mar 2026 pre-release

Release notes

hkdf v0.13.0-rc.6 (#192)
Open source →
0.13.0-rc.5 02 Feb 2026 pre-release
Release notes
Updates the following dependency requirements in Cargo.toml:
- aes v0.9.0-rc.4
- belt-hash v0.2.0-rc.5
- cipher v0.5.0-rc.8
- cmac v0.8.0-rc.4
- digest v0.11.0-rc.11
- hmac v0.13.0-rc.5
- kdf v0.1
- sha1 v0.11.0-rc.5
- sha2 v0.11.0-rc.5
Releases the following new versions:
- ansi-x963-kdf v0.1.0-rc.2
- bake-kdf v0.1.0-rc.1
- hkdf v0.13.0-rc.5
- kbkdf v0.1.0-rc.1
- one-step-kdf v0.1.0-rc.1
Open source →
0.13.0-rc.4 25 Jan 2026 pre-release

Release notes

hkdf v0.13.0-rc.4 (#181)
Open source →
0.13.0-rc.3 05 Nov 2025 pre-release

Nothing published for this version
0.13.0-rc.2 18 Sep 2025 pre-release

Nothing published for this version
0.13.0-rc.1 03 Sep 2025 pre-release

Nothing published for this version
0.13.0-rc.0 29 May 2025 pre-release

Nothing published for this version
0.13.0-pre.5 07 Mar 2025 pre-release

Nothing published for this version
0.13.0-pre.4 26 Jul 2024 pre-release

Nothing published for this version
0.13.0-pre.3 01 Feb 2024 pre-release

Nothing published for this version
0.13.0-pre.2 17 Jan 2024 pre-release

Nothing published for this version
0.13.0-pre.1 10 Jan 2024 pre-release

Nothing published for this version
0.13.0-pre.0 09 Jan 2024 pre-release

Nothing published for this version
0.12.4 13 Dec 2023

Nothing published for this version
0.12.3 17 Feb 2022
Release notes
Fixed
- Minimal versions build (#63)
Open source →
0.12.2 27 Jan 2022
Release notes
Fixed
- Re-export InvalidLength and InvalidPrkLength (#59)
Open source →
0.12.1 27 Jan 2022
Release notes
Added
- Ability to switch HMAC implementation to SimpleHmac with respective SimpleHkdfExtract and SimpleHkdf aliases (#57)
Open source →
0.12.0 07 Dec 2021
Release notes
Changed
- Bump hmac crate dependency to v0.12 and digest to v0.10 (#52)
Open source →
0.11.0 29 Apr 2021
Release notes
Added
- Wycheproof HKDF test vectors (#49)
Changed
- Bump hmac crate dependency to v0.11 (#50)
Fixed
- HKDF-Extract with empty salt (#46)
Open source →
0.10.0 26 Oct 2020
Release notes
Changed
- Bump hmac dependency to v0.10 (#40)
Open source →
0.10.0-alpha.0 19 Oct 2020 pre-release

Nothing published for this version
0.9.0 22 Jun 2020
Release notes
Added
- Multipart features for HKDF-Extract and HKDF-Expand (#34)
Changed
- Bump digest v0.9; hmac v0.9 (#35)
Open source →
0.9.0-alpha.0 10 Jun 2020 pre-release

Nothing published for this version
0.8.0 26 Jul 2019
Release notes
Added
- Hkdf::from_prk(), Hkdf::extract()
Open source →
0.7.1 16 Jul 2019

Nothing published for this version
0.7.0 16 Oct 2018
Release notes
Changed
- Update digest to 0.8
- Refactor for API changes
Removed
- Redundant generic-array crate.
Open source →
0.6.0 21 Aug 2018
Release notes
Changed
- The expand signature has changed.
Removed
- std requirement
Open source →
0.5.0 20 May 2018
Release notes
Fixed
- Omitting HKDF salt.
Removed
- Deprecated interface
Open source →
0.4.0 21 Mar 2018
Release notes
Added
- Benchmarks
- derive Clone
Changed
- RFC-inspired interface
- Reduce heap allocation
- Bump deps: hex-0.3
Removed
- Unnecessary mut
Open source →
0.3.0 29 Nov 2017
Release notes
Changed
- update dependencies: digest-0.7, hmac-0.5
Open source →
0.2.0 21 Sep 2017
Release notes
Fixed
- Support for rustc 1.20.0
Open source →
0.1.2 21 Sep 2017
Release notes
Fixed
- Support for rustc 1.5.0
Open source →
0.1.0 03 Jan 2015
Release notes
- Initial release
Open source →

hkdf

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