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78 lines
2.3 KiB
78 lines
2.3 KiB
import 'package:flutter/material.dart';
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import 'package:dbcrypt/dbcrypt.dart';
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import 'package:flutter_udid/flutter_udid.dart';
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import 'package:loc_chain_app/util/keyfile_manager.dart';
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class Transaction {
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Transaction({required this.hash, required this.pubKey});
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final String hash;
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final String pubKey;
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static Future<Transaction> create(String otherUserId) async {
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String id = await FlutterUdid.consistentUdid;
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bool idLess = id.compareTo(otherUserId) < 0;
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var lesser = idLess ? id : otherUserId;
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var greater = idLess ? otherUserId : id;
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return Transaction(
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hash: DBCrypt().hashpw("$lesser-$greater", DBCrypt().gensalt()),
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pubKey: KeyFileManager.keyPair.publicKey,
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);
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}
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Map<String, dynamic> toJson() => {
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"combinedHash": hash,
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"publicKey": pubKey,
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};
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Transaction.fromJson(Map<String, dynamic> json)
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: hash = json['combinedHash'],
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pubKey = json['publicKey'];
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}
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class EncounterTransaction {
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EncounterTransaction({
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required this.combinedHash,
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required this.encodedGPSLocation,
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required this.partnerPublicKey,
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required this.validationSignature,
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}) : timestamp = "${DateTime.now().millisecondsSinceEpoch}";
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final String combinedHash;
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final String timestamp;
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final String encodedGPSLocation;
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final String partnerPublicKey;
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final String validationSignature;
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EncounterTransaction.fromJson(Map<String, dynamic> json)
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: combinedHash = json['combinedHash'],
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timestamp = json['timestamp'],
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encodedGPSLocation = json['encodedGPSLocation'],
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partnerPublicKey = json['partnerPublicKey'],
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validationSignature = json['validationSignature'];
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Map<String, dynamic> toJson() => {
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"combinedHash": combinedHash,
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"timestamp": timestamp,
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"encodedGPSLocation": encodedGPSLocation,
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"partnerPublicKey": partnerPublicKey,
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"validationSignature": validationSignature,
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};
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}
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class ExposureTransaction {
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final String clientID;
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final String timestamp;
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ExposureTransaction({
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required this.clientID,
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}) : timestamp = "${DateTime.now().millisecondsSinceEpoch}";
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ExposureTransaction.fromJson(Map<String, dynamic> json)
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: clientID = json['clientID'],
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timestamp = json['timestamp'];
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Map<String, dynamic> toJson() => {
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"clientID": clientID,
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"timestamp": timestamp,
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};
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}
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