elliptic

basic elliptic curves in pure dart

0.4.0 34K downloads/mo #1763 most downloaded on pub.dev c0mm4nd/dart-elliptic

What this package is like to depend on

Last release 23 days ago

31 Jul 2026

Ships fairly regularly

a new release about every 9 months

Nearly every release is documented

notes for 16 of 16 stable releases

Nothing withdrawn

no release was ever pulled

6 years old

16 releases · first in 2020

2 releases in the last 12 months

see the full history below

Release timeline

16 releases · Nov 2020 to Jul 2026

2021 2022 2023 2024 2025 2026

Release Pre-release

Releases

latest 16

0.4.0 31 Jul 2026
Release notes
- SECURITY: scalarMul now uses a Montgomery ladder (one addition and one doubling per scalar bit, exchanged with a branch-free conditional swap) so the execution shape no longer depends on secret scalar bits. Dart BigInt arithmetic itself remains variable-time.
- SECURITY: compressedHexToPublicKey computes the modular square root with Tonelli–Shanks, fixing decoding for curves with p ≡ 1 (mod 4) (secp224r1/secp224k1), and validates x < p and the recovered root.
- Fix generatePrivateKey: remove a leftover test-only byte mutation and zero-pad the range-check reconstruction.
- Correct documentation that incorrectly claimed constant-time operations.
Open source →
0.3.12 10 Oct 2025
Release notes
- SECURITY FIX: Add point validation to prevent invalid elliptic curve points from being used in ECDH
  - PublicKey constructors now validate that points are on the curve
  - computeSecret() validates public key points before ECDH computation
  - Added ErrPointNotOnCurve exception for invalid points
  - Prevents potential security vulnerabilities from malformed or malicious public keys
Open source →
0.3.11 04 Sep 2024
Release notes
- fix EllipticException equality operator warn
- improve scalaMul
Open source →
0.3.10 26 Aug 2023
Release notes
- Add the PEM example to README
Open source →
0.3.9 26 Aug 2023
Release notes
- Change sdk to ">=2.12.0 <4.0.0"
Open source →
0.3.8 22 Apr 2022
Release notes
- Support any a(alpha) value in curve
Open source →
0.3.7 27 Mar 2022
Release notes
- Fix ecdh computeSecret
Open source →
0.3.6 23 Mar 2022
Release notes
- Fix ecdh
Open source →
0.3.5 21 Jul 2021
Release notes
- Add EllipticException for better error handling
Open source →
0.3.4 18 Jul 2021
Release notes
- Fix hex, Enhance hex
- Enhance bigint calc
- Add tests for hex
Open source →
0.3.3 18 Jul 2021
Release notes
- Fix bug on generating compressed hex
Open source →
0.3.2 16 Jul 2021
Release notes
- Add ecdh library
Open source →
0.3.1 14 Jun 2021
Release notes
- Add support to koblitz curves (secp256k1 & secp224k1)
- Pass tests on secp256k1
- Fix bug on loading compressed public key hex
Open source →
0.3.0 11 Jun 2021
Release notes
- New abstract class curve for secp256k1 etc in https://www.secg.org/sec2-v2.pdf
- More customizable params for EllipticCurve (maybe can work on k1)
- Add some TODOs
Open source →
0.2.0 11 Jun 2021
Release notes
- Null-safe
- Fix bugs
- Pass tests (mainly P256)
- Add utils to PublicKey and PrivateKey
Open source →
0.1.0 26 Nov 2020
Release notes
- Initial version, created by Stagehand
- Having bugs, dont use this version
Open source →

elliptic

What this package is like to depend on

Release timeline

Releases

Every package, every release, already written down.