keri 2.1.5 
keri: ^2.1.5 copied to clipboard
humancolossus.orgDart client for managing KERI based Identifiers on various platforms.
import 'dart:convert';
import 'dart:io';
import 'package:asymmetric_crypto_primitives/asymmetric_crypto_primitives.dart';
import 'package:flutter/material.dart';
import 'dart:async';
import 'package:flutter/services.dart';
import 'package:keri/keri.dart';
import 'package:path_provider/path_provider.dart';
import 'package:keri_platform_interface/bridge_generated.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatefulWidget {
const MyApp({Key? key}) : super(key: key);
@override
State<MyApp> createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
late var signer;
String currentKey = '';
String nextKey = '';
String icpEvent = '';
List<PublicKey> vec1 = [];
List<PublicKey> vec2 = [];
List<String> vec3 = [];
String signature = '';
late Identifier controller;
String controllerId = '';
List<PublicKey> currentKeys = [];
List<PublicKey> newNextKeys = [];
String rotationEvent = '';
String signature2 = '';
bool finalizedEvent = false;
String dataForAnchor = 'important data';
String anchorEvent = '';
String signature3 = '';
bool finalizedAnchor = false;
var dataToSign = '{"hello":"world"}';
bool isCesrSigned = false;
bool isCesrVerified = false;
late var signed;
@override
void initState() {
inittKel();
super.initState();
}
Future<void> inittKel() async {
signer = await AsymmetricCryptoPrimitives.establishForEd25519();
var dir = await getLocalPath();
var inited = await initKel(inputAppDir: dir);
}
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('Plugin example app'),
),
body: SingleChildScrollView(
child: Center(
child: Column(
children: [
RawMaterialButton(
onPressed: () async {
currentKey = await signer.getCurrentPubKey();
nextKey = await signer.getNextPubKey();
print(currentKey);
vec1.add(await newPublicKey(
kt: KeyType.Ed25519, keyB64: currentKey));
vec2.add(await newPublicKey(
kt: KeyType.Ed25519, keyB64: nextKey));
setState(() {});
},
child: const Text('Get keys'),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(18.0),
side: BorderSide(width: 1))),
currentKey.isNotEmpty
? Text(
"Public keys",
style: TextStyle(color: Colors.green),
)
: Container(),
Text(currentKey),
Text(nextKey),
currentKey.isNotEmpty ? const Divider() : Container(),
currentKey.isNotEmpty
? RawMaterialButton(
onPressed: () async {
icpEvent = await incept(
publicKeys: vec1,
nextPubKeys: vec2,
witnesses: vec3,
witnessThreshold: 0);
setState(() {});
},
child: const Text('Incept'),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(18.0),
side: BorderSide(width: 1)))
: Container(),
icpEvent.isNotEmpty
? Text(
"ICP event",
style: TextStyle(color: Colors.green),
)
: Container(),
icpEvent.isNotEmpty ? Text(icpEvent) : Container(),
icpEvent.isNotEmpty ? const Divider() : Container(),
icpEvent.isNotEmpty
? RawMaterialButton(
onPressed: () async {
signature = await signer.sign(icpEvent);
setState(() {});
},
child: const Text('Sign event'),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(18.0),
side: BorderSide(width: 1)))
: Container(),
signature.isNotEmpty
? Text(
"Signature",
style: TextStyle(color: Colors.green),
)
: Container(),
signature.isNotEmpty ? Text(signature) : Container(),
signature.isNotEmpty ? const Divider() : Container(),
signature.isNotEmpty
? RawMaterialButton(
onPressed: () async {
controller = await finalizeInception(
event: icpEvent,
signature: await signatureFromHex(
st: SignatureType.Ed25519Sha512,
signature: signature));
controllerId = controller.id;
setState(() {});
},
child: const Text('Finalize Inception'),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(18.0),
side: BorderSide(width: 1)))
: Container(),
controllerId.isNotEmpty
? Text(
"Controller identifier",
style: TextStyle(color: Colors.green),
)
: Container(),
controllerId.isNotEmpty ? Text(controllerId) : Container(),
controllerId.isNotEmpty ? const Divider() : Container(),
controllerId.isNotEmpty
? RawMaterialButton(
onPressed: () async {
await signer.rotateForEd25519();
currentKey = await signer.getCurrentPubKey();
nextKey = await signer.getNextPubKey();
currentKeys.add(await newPublicKey(
kt: KeyType.Ed25519, keyB64: currentKey));
newNextKeys.add(await newPublicKey(
kt: KeyType.Ed25519, keyB64: nextKey));
rotationEvent = await rotate(
controller: controller,
currentKeys: currentKeys,
newNextKeys: newNextKeys,
witnessToAdd: [],
witnessToRemove: [],
witnessThreshold: 0);
setState(() {});
},
child: const Text('Rotate'),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(18.0),
side: BorderSide(width: 1)))
: Container(),
rotationEvent.isNotEmpty
? Text(
"Rotation event",
style: TextStyle(color: Colors.green),
)
: Container(),
rotationEvent.isNotEmpty ? Text(rotationEvent) : Container(),
rotationEvent.isNotEmpty ? const Divider() : Container(),
rotationEvent.isNotEmpty
? RawMaterialButton(
onPressed: () async {
signature2 = await signer.sign(rotationEvent);
setState(() {});
},
child: const Text('Sign event'),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(18.0),
side: BorderSide(width: 1)))
: Container(),
signature2.isNotEmpty
? Text(
"Signature",
style: TextStyle(color: Colors.green),
)
: Container(),
signature2.isNotEmpty ? Text(signature2) : Container(),
signature2.isNotEmpty ? const Divider() : Container(),
signature2.isNotEmpty
? RawMaterialButton(
onPressed: () async {
finalizedEvent = await finalizeEvent(
identifier: controller,
event: rotationEvent,
signature: await signatureFromHex(
st: SignatureType.Ed25519Sha512,
signature: signature2));
setState(() {});
},
child: const Text('Finalize event'),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(18.0),
side: BorderSide(width: 1)))
: Container(),
finalizedEvent
? Text(
"Rotation event finalized",
style: TextStyle(color: Colors.green),
)
: Container(),
finalizedEvent ? const Divider() : Container(),
finalizedEvent
? Text(
"Data for anchor",
style: TextStyle(color: Colors.green),
)
: Container(),
finalizedEvent ? Text(dataForAnchor) : Container(),
finalizedEvent ? const Divider() : Container(),
finalizedEvent
? RawMaterialButton(
onPressed: () async {
anchorEvent = await anchor(
controller: controller,
data: dataForAnchor,
algo: DigestType.blake3256());
setState(() {});
},
child: const Text('Anchor'),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(18.0),
side: BorderSide(width: 1)))
: Container(),
anchorEvent.isNotEmpty
? Text(
"Anchor event",
style: TextStyle(color: Colors.green),
)
: Container(),
anchorEvent.isNotEmpty ? Text(anchorEvent) : Container(),
anchorEvent.isNotEmpty ? const Divider() : Container(),
anchorEvent.isNotEmpty
? RawMaterialButton(
onPressed: () async {
signature3 = await signer.sign(anchorEvent);
setState(() {});
},
child: const Text('Sign event'),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(18.0),
side: BorderSide(width: 1)))
: Container(),
signature3.isNotEmpty
? Text(
"Signature",
style: TextStyle(color: Colors.green),
)
: Container(),
signature3.isNotEmpty ? Text(signature3) : Container(),
signature3.isNotEmpty ? const Divider() : Container(),
signature3.isNotEmpty
? RawMaterialButton(
onPressed: () async {
finalizedAnchor = await finalizeEvent(
identifier: controller,
event: anchorEvent,
signature: await signatureFromHex(
st: SignatureType.Ed25519Sha512,
signature: signature3));
setState(() {});
},
child: const Text('Finalize event'),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(18.0),
side: BorderSide(width: 1)))
: Container(),
finalizedAnchor
? Text(
"Anchor event finalized",
style: TextStyle(color: Colors.green),
)
: Container(),
finalizedAnchor ? const Divider() : Container(),
Divider(),
Text("data to sign: $dataToSign"),
controllerId.isNotEmpty
? RawMaterialButton(
onPressed: () async {
var hexSig = await signer.sign(dataToSign);
await signToCesr(
identifier: controller,
data: dataToSign,
signature: await signatureFromHex(
st: SignatureType.Ed25519Sha512,
signature: hexSig))
.then((value) {
if (value.isNotEmpty) {
print(value);
setState(() {
isCesrSigned = true;
signed = value;
});
}
});
},
child: const Text('Sign'),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(18.0),
side: BorderSide(width: 1)))
: Container(),
isCesrSigned ? Text("Successfully signed!") : Container(),
isCesrSigned
? RawMaterialButton(
onPressed: () async {
print(await resolveOobi(
oobiJson:
'{"cid": "EJEv3VqZ7zaRaqGCrFt5kEM_ZLK1df2XKc-v6xDWT3CG", "role": "witness", "eid": "BDg3H7Sr-eES0XWXiO8nvMxW6mD_1LxLeE1nuiZxhGp4"}'));
print(await resolveOobi(
oobiJson:
'{\"eid\":\"BSuhyBcPZEZLK-fcw5tzHn2N46wRCG_ZOoeKtWTOunRA\",\"scheme\":\"http\",\"url\":\"http://sandbox.argo.colossi.network:8888/\"}'));
var verified = await verifyFromCesr(stream: signed)
.then((value) {
if (value) {
setState(() {
isCesrVerified = true;
});
}
});
},
child: const Text('Verify'),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(18.0),
side: BorderSide(width: 1)))
: Container(),
isCesrVerified ? Text("Successfully verified!") : Container(),
],
),
),
),
),
);
}
Future<String> getLocalPath() async {
final directory = await getApplicationDocumentsDirectory();
print(directory);
return directory.path;
}
}Metadata
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Metadata
Dart client for managing KERI based Identifiers on various platforms.
Repository (GitHub)
View/report issues
Documentation
License
EUPL-1.2 (LICENSE)
Dependencies
ffi, file, flutter, flutter_rust_bridge, freezed, freezed_annotation, keri_android, keri_ios, keri_macos, keri_platform_interface, meta, plugin_platform_interface, uuid
