Loc-Chain/loc-chain-app
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Merge branch 'feature/firebase-connection' of github.com:hackku21/loc-chain-app into main

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This commit is contained in:
Zachary Atkins 2021-04-10 15:27:21 -05:00
commit ad62f5f1b0
2 changed files with 23 additions and 7 deletions
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14
loc_chain_app/lib/util/keyfile_manager.dart
View File

@ -3,6 +3,8 @@ import 'package:path_provider/path_provider.dart';
import 'dart:io'; import 'dart:io';
class KeyFileManager { class KeyFileManager {
static KeyPair keyPair = KeyPair();
static Future<String> get _localPath async { static Future<String> get _localPath async {
final directory = await getApplicationDocumentsDirectory(); final directory = await getApplicationDocumentsDirectory();
return directory.path; return directory.path;
@ -19,6 +21,9 @@ class KeyFileManager {
} }
static Future<KeyPair> readKeyPair() async { static Future<KeyPair> readKeyPair() async {
if (keyPair.hasPublicKey() && keyPair.hasPrivateKey()) {
return keyPair;
}
try { try {
String privKey = await _privKeyFile.then( String privKey = await _privKeyFile.then(
(file) => file.readAsString(), (file) => file.readAsString(),
@ -26,11 +31,11 @@ class KeyFileManager {
String pubKey = await _pubKeyFile.then( String pubKey = await _pubKeyFile.then(
(file) => file.readAsString(), (file) => file.readAsString(),
); );
keyPair = KeyPair(
return KeyPair(
privateKey: privKey, privateKey: privKey,
publicKey: pubKey, publicKey: pubKey,
); );
return keyPair;
} catch (e) { } catch (e) {
print(e); print(e);
return KeyPair(); return KeyPair();
@ -38,9 +43,10 @@ class KeyFileManager {
} }
static Future<void> writeKeyPair(KeyPair pair) async { static Future<void> writeKeyPair(KeyPair pair) async {
keyPair = pair;
final File privKeyFile = await _privKeyFile; final File privKeyFile = await _privKeyFile;
final File pubKeyFile = await _pubKeyFile; final File pubKeyFile = await _pubKeyFile;
pubKeyFile.writeAsString(pair.publicKey); pubKeyFile.writeAsString(keyPair.publicKey);
privKeyFile.writeAsString(pair.privateKey); privKeyFile.writeAsString(keyPair.privateKey);
} }
} }

16
loc_chain_app/lib/util/transaction_manager.dart
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@ -3,15 +3,25 @@ import 'package:shared_preferences/shared_preferences.dart';
import 'package:sqflite/sqflite.dart'; import 'package:sqflite/sqflite.dart';
import 'package:fast_rsa/rsa.dart'; import 'package:fast_rsa/rsa.dart';
import 'package:loc_chain_app/util/keyfile_manager.dart';
import 'dart:io'; import 'dart:io';
class Transaction { class Transaction {
Transaction({required this.otherUserID}) { Transaction({required this.hash}) {
SharedPreferences.getInstance().then((s) => _id = s.getString('id') ?? '0'); SharedPreferences.getInstance().then((s) => _id = s.getString('id') ?? '0');
} }
late final String _id; late final String _id;
final String otherUserID; final String hash;
static Hash? makeTransactionHash() {} static Future<String> makeTransactionHash(String otherUserId) async {
String id = await SharedPreferences.getInstance()
.then((s) => s.getString('id') ?? '');
bool idLess = id.compareTo(otherUserId) < 0;
var lesser = idLess ? id : otherUserId;
var greater = idLess ? otherUserId : id;
return RSA.signPKCS1v15("$lesser-$greater", Hash.HASH_SHA256,
KeyFileManager.keyPair.privateKey);
}
} }
class TransactionsDBManager { class TransactionsDBManager {