Implementation of Standards for Efficient Cryptography (SEC) including SECP256K1 and SECP256R1.

Features

• PublicKey Recovery Id Calculation.
• Secp160r1
• Secp160r2
• Secp192k1
• Secp192r1
• Secp224k1
• Secp224r1
• Secp256k1 (Commonly used in cryptocurrencies)
• Secp256r1
• Secp384r1
• Secp521r1
• Brainpoolp160r1
• Brainpoolp160t1
• Brainpoolp192r1
• Brainpoolp192t1
• Brainpoolp224r1
• Brainpoolp224t1
• Brainpoolp256r1
• Brainpoolp256t1
• Brainpoolp320r1
• Brainpoolp320t1
• Brainpoolp384r1
• Brainpoolp384t1
• Brainpoolp512r1
• Brainpoolp512t1
• Gostr3410_2001_cryptopro_a
• Gostr3410_2001_cryptopro_b
• Gostr3410_2001_cryptopro_c
• Gostr3410_2001_cryptopro_xcha
• Gostr3410_2001_cryptopro_xchb
• Prime192v1
• Prime192v2
• Prime192v3
• Prime239v1
• Prime239v2
• Prime239v3
• Prime256v1
• Secp112r1
• Secp112r2
• Secp128r1
• Secp128r2
• Secp160k1

Getting started

dependencies:
  sec: any

Usage

import 'package:sec/sec.dart';
import 'package:convert/convert.dart';

final privateKey = BigInt.parse(
'c57304b3a53051600d7035fc593083810a8fa250e6a7a2803cf6a0f3c2750503',
radix: 16,
);

final publicKey = Secp256k1.createPublicKey(privateKey, true);
final pkHex = hex.encode(publicKey);
print('Public Key: $pkHex');

// 03566b04ce8459c8e2f95691ff17625a0b84773ecd2b65f597c05bd90fa8609ed6

Additional information

This package uses pointycastle.