p521

Pure Rust implementation of the NIST P-521 (a.k.a. secp521r1) elliptic curve as defined in SP 800-186, with support for ECDH, ECDSA signing/verification, and general purpose curve arithmetic

0.14.0 27M downloads/mo #1769 most downloaded on crates.io RustCrypto/elliptic-curves

What this package is like to depend on

Last release 1 months ago

08 Jul 2026

Ships fairly regularly

a new release about every 2 weeks

Nearly every release is documented

notes for 3 of 3 stable releases

3 versions withdrawn

withdrawn after publishing

8 years old

33 releases · first in 2018

19 releases in the last 12 months

see the full history below

Release timeline

33 releases · Oct 2018 to Jul 2026

2019 2020 2021 2022 2023 2024 2025 2026

Release Pre-release Withdrawn

Releases

latest 33

0.14.0 08 Jul 2026

Release notes

p521 v0.14.0 (#1902)
Open source →
Release notes
Added
- Implement EcdsaCurve (#1019)
- Implement ReduceNonZero for Scalar (#1148)
- Implement From<NonZeroScalar> for Scalar (#1188)
- Implement De/Serialize for ProjectivePoint (#1214)
- hash2curve crate support (#1286, #1853)
- Implement CofactorGroup for ProjectivePoint (#1394)
- 32-bit base field implementation; Uint type as conditional alias for U544/U576 (#1467)
- getrandom feature (#1521)
- Implement crypto_common::Generate trait (#1586)
- precomputed-tables feature (#1738, #1792)
- Implement FieldArithmetic trait (#1833)
Changed
- ECDSA implementation now uses RFC6979 by way of the ecdsa/rfc6979 crates (#1016)
- Edition changed to 2024 and MSRV bumped to 1.85 (#1125)
- Relax MSRV policy and allow MSRV bumps in patch releases
- Base field implementation regenerated using fiat-crypto v0.1.5 (#1413)
- NistP521::Uint is now the Uint type alias instead of unconditionally U576 (#1467)
- Use primefield::MontyFieldElement for Scalar field arithmetic (#1565)
- Use crypto-bigint to implement field inversions (#1574)
- Bump sha2 dependency to v0.11 (#1712)
- Bump elliptic-curve to v0.14 (#1849)
- Use wnaf for vartime (multi)scalar multiplication (#1870)
- Bump ecdsa to v0.17 (#1883)
- Bump primeorder to v0.14 (#1887)
Removed
- bits feature (#1766)
- expose-field feature: use FieldArithmetic trait instead (#1834)
Fixed
- Size of CompressedPoint (#1652)
Open source →
0.14.0-rc.15 29 Jun 2026 pre-release
Release notes
Releases the following:
- bignp256 v0.14.0-rc.15
- bp256 v0.14.0-rc.15
- bp384 v0.14.0-rc.15
- k256 v0.14.0-rc.15
- p192 v0.14.0-rc.15
- p224 v0.14.0-rc.15
- p256 v0.14.0-rc.15
- p384 v0.14.0-rc.15
- p521 v0.14.0-rc.15
- primeorder v0.14.0-rc.15
- sm2 v0.14.0-rc.15
- wnaf v0.14.0-rc.2
Open source →
0.14.0-rc.14 24 Jun 2026 pre-release

Nothing published for this version
0.14.0-rc.13 23 Jun 2026 pre-release

Nothing published for this version
0.14.0-rc.12 17 Jun 2026 pre-release

Nothing published for this version
0.14.0-rc.11 10 Jun 2026 pre-release

Nothing published for this version
0.14.0-rc.10 04 Jun 2026 pre-release

Nothing published for this version
0.14.0-rc.9 19 Apr 2026 pre-release

Nothing published for this version
0.14.0-rc.8 10 Mar 2026 pre-release

Nothing published for this version
0.14.0-rc.7 03 Feb 2026 pre-release

Nothing published for this version
0.14.0-rc.6 24 Jan 2026 pre-release

Nothing published for this version
0.14.0-rc.5 21 Jan 2026 pre-release

Nothing published for this version
0.14.0-rc.4 08 Jan 2026 pre-release

Nothing published for this version
0.14.0-rc.3 04 Jan 2026 pre-release

Nothing published for this version
0.14.0-rc.2 30 Dec 2025 pre-release

Nothing published for this version
0.14.0-rc.1 25 Nov 2025 pre-release

Nothing published for this version
0.14.0-rc.0 23 Oct 2025 pre-release

Nothing published for this version
0.14.0-pre.11 14 Sep 2025 pre-release

Nothing published for this version
0.14.0-pre.10 03 Sep 2025 pre-release

Nothing published for this version
0.14.0-pre.9 10 Jul 2025 pre-release

Nothing published for this version
0.14.0-pre.8 21 Jun 2025 pre-release

Nothing published for this version
0.14.0-pre.7 14 Jun 2025 pre-release

Nothing published for this version
0.14.0-pre.6 14 Jun 2025 pre-release

Nothing published for this version
0.14.0-pre.5 07 Jun 2025 pre-release

Nothing published for this version
0.14.0-pre.4 31 May 2025 pre-release

Nothing published for this version
0.14.0-pre.3 29 May 2025 pre-release

Nothing published for this version
0.14.0-pre.2 22 Sep 2024 pre-release

Nothing published for this version
0.14.0-pre.1 27 Jul 2024 pre-release

Nothing published for this version
0.13.3 11 Nov 2023
Release notes
Added
- Implement hash2curve (#964)
Fixed
- Panics when decoding FieldElements (#967)
Open source →
0.13.2 10 Nov 2023
Release notes
Added
- serde feature (#962)
Changed
- Remove pub from arithmetic module (#961)
Open source →
0.13.1 10 Nov 2023 withdrawn
Release notes
Added
- Bernstein-Yang scalar inversions (#786)
- VOPRF support (#924)
- arithmetic feature (#953)
- ecdh feature (#954)
- ecdsa feature (#956)
Open source →
0.13.0 04 Mar 2023 withdrawn
Release notes
- Initial release
Open source →
0.0.0 03 Oct 2018 withdrawn

Nothing published for this version

p521

What this package is like to depend on

Release timeline

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