https://github.com/tougee/curve25519

Dart port of x25519 from Go Cryptography curve25519
https://github.com/tougee/curve25519

cryptography curve25519 x25519

Last synced: 2 months ago
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Dart port of x25519 from Go Cryptography curve25519

• Host: GitHub
• URL: https://github.com/tougee/curve25519
• Owner: Tougee
• License: apache-2.0
• Created: 2021-03-05T13:53:01.000Z (almost 4 years ago)
• Default Branch: main
• Last Pushed: 2021-11-01T03:22:40.000Z (about 3 years ago)
• Last Synced: 2024-10-11T03:19:51.646Z (3 months ago)
• Topics: cryptography, curve25519, x25519
• Language: Dart
• Homepage: https://pub.dev/packages/x25519
• Size: 47.9 KB
• Stars: 7
• Watchers: 3
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

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README

        
# Curve25519

Dart port of [Curve25519](https://github.com/golang/crypto/tree/master/curve25519)

[Pub package](https://pub.dev/packages/x25519)

## Usage

```dart

import 'package:x25519/x25519.dart';

void genKeyAndX25519() {

  var aliceKeyPair = generateKeyPair();

  var bobKeyPair = generateKeyPair();

  var aliceSharedKey = X25519(aliceKeyPair.privateKey, bobKeyPair.publicKey);

  var bobSharedKey = X25519(bobKeyPair.privateKey, aliceKeyPair.publicKey);

  assert(ListEquality().equals(aliceSharedKey, bobSharedKey));

}

void useX25519() {

  const expectedHex =

      '89161fde887b2b53de549af483940106ecc114d6982daa98256de23bdf77661a';

  var x = List.filled(32, 0);

  x[0] = 1;

  for (var i = 0; i < 200; i++) {

    x = X25519(x, basePoint);

  }

  assert(HEX.encode(x) == expectedHex);

}

```

## Benchmark

Simulate from [pinenacl-dart Benchmark](https://github.com/ilap/pinenacl-dart/blob/master/benchmark/README.md)

MacBook Pro (16-inch, 2019), macOS Big Sur, with 2.4GHz i9 32GB

#### JiT (Dart VM) Benchmark

> dart test test/benchmark/curve25519_benchmark.dart

| type | iterations    |   time  |

|:----------:|:----------:|---------------|

| generateKeyPair | 1259 iterations | 5001 ms

| X25519 | 1745 iterations | 5001 ms

#### AoT (native binary)

> dart2native test/benchmark/curve25519_benchmark.dart -o curve25519_benchmark  

> ./curve25519_benchmark

| type | iterations    |   time  |

|:----------:|---------------|:-------:|

| generateKeyPair | 1751 iterations | 5002 ms

| X25519 | 2266 iterations | 5000 ms

#### JS (Dart2JS) benchmark

> dart test test/benchmark/curve25519_benchmark.dart -p chrome

| type | iterations    |   time  |

|:----------:|:---------------|:-------:|

| generateKeyPair | 242 iterations | 5022 ms

| X25519 | 244 iterations | 5013 ms