ed25519_edwards 0.3.2

Ed25519 signature implementation for Dart, ported from Go cryptography and compatible with RFC 8032 keys.

Ed25519

Dart port of ed25519 from Golang ed25519

Pub package

Usage

import 'package:ed25519_edwards/ed25519_edwards.dart' as ed;

    void signAndVerify() {
      var keyPair = ed.generateKey();
      var privateKey = keyPair.privateKey;
      var publicKey = keyPair.publicKey;
      var message = utf8.encode('test message');
      var sig = ed.sign(privateKey, message as Uint8List);
      var result = ed.verify(publicKey, message, sig);
      assert(result == true);
    
      var wrongMessage = utf8.encode('wrong message');
      var wrongResult = ed.verify(publicKey, wrongMessage as Uint8List, sig);
      assert(wrongResult == false);
    }

APIs

Ed25519
public
seed
newKeyFromSeed
generateKey
sign
verify

Edwards25519
FeZero
FeOne
FeAdd
FeSub
FeCopy
FeCMove
FeFromBytes
FeToBytes
FeIsNegative
FeIsNonZero
FeNeg
FeCombine
FeMul
FeSqaure
FeSquare2
FeInvert
GeDoubleScalarMultVartime
PreComputedGroupElementCMove
GeScalarMultBase
ScMulAdd
ScReduce
ScMinimal

Benchmark

Simulate from pinenacl-dart Benchmark

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

JiT (Dart VM) Benchmark

dart test test/benchmark/ed25519_benchmark.dart

type	rate	iterations	time	data throughput
Ed25519 - sign	50.54 MB/s	254 iterations	5025 ms	254.00 MB
Ed25519 - verify	97.38 MB/s	487 iterations	5001 ms	487.00 MB

AoT (native binary)

dart2native test/benchmark/ed25519_benchmark.dart -o ed25519_benchmark
./ed25519_benchmark

type	rate	iterations	time	data throughput
Ed25519 - sign	21.64 MB/s	109 iterations	5036 ms	109.00 MB
Ed25519 - verify	37.20 MB/s	187 iterations	5027 ms	187.00 MB

JS (Dart2JS) benchmark (too slow, suggest using other libs for dart2js and flutter web)

dart test test/benchmark/ed25519_benchmark.dart -p chrome

type	rate	iterations	time	data throughput
Ed25519 - sign	797.03 KB/s	4 iterations	5139 ms	4.00 MB
Ed25519 - verify	1.53 MB/s	8 iterations	5231 ms	8.00 MB