ed25519

Description:

ed25519

ed25519 #
a dart implement of ed25519
usage #
Uint8List blake2bHashFunc(Uint8List m) {
Uint8List bytes = Uint8List(64);
var b = Blake2b(512);
b.update(m, 0, m.length);
b.digest(bytes, 0);
return bytes;
}

void main() {

test('adds one to input values', () {
String expectPk = "c9f52a9ae9683a8d304c65dd87d88f1a7628eb55bd7aaba6d5d4067dde804f9c";
String expectSign = "0029e755645c11dce87d6c16a1af9ba6559fca97c98fe282b0683708d8a6067fc5e3b007826b2d6e95c5a0c31b82e340e165679ff6cefb7de5aa744bc670df0c";

String hsk = "11E2A3D65792FFA9E8ED15857EF13C562CF7C9BFBBFFD66FFA9B08EC709C8F0A";
List<int> isk = HEX.decode(hsk);
var sk = butils.Utils.int8list2uint8list(Int8List.fromList(isk));

var pk = Ed25519.publickey(blake2bHashFunc, sk);
var hexpk = HEX.encode(pk);
assert(hexpk == expectPk);
print(hexpk);

Uint8List msg = Uint8List.fromList("This is a message".codeUnits);
Uint8List sign = Ed25519.signature(blake2bHashFunc, msg, sk, pk);
String hexSign = HEX.encode(sign);
assert(hexSign == expectSign);
print(hexSign);

var valid = Ed25519.checkvalid(blake2bHashFunc, sign, msg, pk);
assert(valid == true);
print(valid);

});
}

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ref #

ed25519
ed25519.py