/// <summary>
/// Unlocks the asynchronous.
/// </summary>
/// <param name="password">The password.</param>
/// <param name="noCheck">if set to <c>true</c> [no check].</param>
/// <returns></returns>
/// <exception cref="Exception">Public key check failed!</exception>
public async Task <bool> UnlockAsync(string password, bool noCheck = false)
{
if (IsUnlocked || !IsCreated)
{
Logger.Warn("Wallet is already unlocked or doesn't exist.");
return(IsUnlocked && IsCreated);
}
Logger.Info("Unlock new wallet.");
try
{
var pswBytes = Encoding.UTF8.GetBytes(password);
pswBytes = SHA256.Create().ComputeHash(pswBytes);
var seed = ManagedAes.DecryptStringFromBytes_Aes(_walletFile.EncryptedSeed, pswBytes, _walletFile.Salt);
byte[] publicKey = null;
byte[] privateKey = null;
switch (_walletFile.KeyType)
{
case KeyType.Ed25519:
Ed25519.KeyPairFromSeed(out publicKey, out privateKey, Utils.HexToByteArray(seed));
break;
case KeyType.Sr25519:
var miniSecret = new MiniSecret(Utils.HexToByteArray(seed), ExpandMode.Ed25519);
var getPair = miniSecret.GetPair();
privateKey = getPair.Secret.ToBytes();
publicKey = getPair.Public.Key;
break;
}
if (noCheck || !publicKey.SequenceEqual(_walletFile.PublicKey))
{
throw new Exception("Public key check failed!");
}
Account = Account.Build(_walletFile.KeyType, privateKey, publicKey);
}
catch (Exception exception)
{
Logger.Warn($"Couldn't unlock the wallet with this password. {exception}");
return(false);
}
if (IsOnline)
{
_subscriptionAccountInfo = await SubscribeAccountInfoAsync();
}
return(true);
}
/// <summary>
/// Creates the asynchronous.
/// </summary>
/// <param name="password">The password.</param>
/// <param name="walletName">Name of the wallet.</param>
/// <returns></returns>
public async Task <bool> CreateAsync(string password, string walletName = DefaultWalletName)
{
if (IsCreated)
{
Logger.Warn("Wallet already created.");
return(true);
}
if (!IsValidPassword(password))
{
Logger.Warn(
"Password isn't is invalid, please provide a proper password. Minmimu eight size and must have upper, lower and digits.");
return(false);
}
Logger.Info("Creating new wallet.");
var randomBytes = new byte[48];
_random.NextBytes(randomBytes);
var memoryBytes = randomBytes.AsMemory();
var pswBytes = Encoding.UTF8.GetBytes(password);
var salt = memoryBytes.Slice(0, 16).ToArray();
var seed = memoryBytes.Slice(16, 32).ToArray();
pswBytes = SHA256.Create().ComputeHash(pswBytes);
var encryptedSeed =
ManagedAes.EncryptStringToBytes_Aes(Utils.Bytes2HexString(seed, Utils.HexStringFormat.Pure), pswBytes,
salt);
Ed25519.KeyPairFromSeed(out var publicKey, out var privateKey, seed);
var keyType = KeyType.Ed25519;
_walletFile = new WalletFile(keyType, publicKey, encryptedSeed, salt);
Caching.Persist(AddWalletFileType(walletName), _walletFile);
Account = Account.Build(keyType, privateKey, publicKey);
if (IsOnline)
{
_subscriptionAccountInfo = await SubscribeAccountInfoAsync();
}
return(true);
}
/// <summary>
/// Creates the asynchronous.
/// </summary>
/// <param name="password">The password.</param>
/// <param name="mnemonic">The mnemonic.</param>
/// <param name="walletName">Name of the wallet.</param>
/// <returns></returns>
public async Task <bool> CreateAsync(string password, string mnemonic, string walletName = DefaultWalletName)
{
if (IsCreated)
{
Logger.Warn("Wallet already created.");
return(true);
}
if (!IsValidPassword(password))
{
Logger.Warn(
"Password isn't is invalid, please provide a proper password. Minmimu eight size and must have upper, lower and digits.");
return(false);
}
Logger.Info("Creating new wallet from mnemonic.");
var seed = Mnemonic.GetSecretKeyFromMnemonic(mnemonic, "Substrate", BIP39Wordlist.English);
var randomBytes = new byte[48];
_random.NextBytes(randomBytes);
var memoryBytes = randomBytes.AsMemory();
var pswBytes = Encoding.UTF8.GetBytes(password);
var salt = memoryBytes.Slice(0, 16).ToArray();
pswBytes = SHA256.Create().ComputeHash(pswBytes);
var encryptedSeed =
ManagedAes.EncryptStringToBytes_Aes(Utils.Bytes2HexString(seed, Utils.HexStringFormat.Pure), pswBytes, salt);
var miniSecret = new MiniSecret(seed, ExpandMode.Ed25519);
var getPair = miniSecret.GetPair();
var keyType = KeyType.Sr25519;
_walletFile = new WalletFile(keyType, getPair.Public.Key, encryptedSeed, salt);
Caching.Persist(AddWalletFileType(walletName), _walletFile);
Account = Account.Build(keyType, getPair.Secret.ToBytes(), getPair.Public.Key);
if (IsOnline)
{
_subscriptionAccountInfo = await SubscribeAccountInfoAsync();
}
return(true);
}
/// <summary>
/// Unlock a locked wallet.
/// </summary>
/// <param name="password"></param>
/// <returns></returns>
public bool Unlock(string password)
{
if (IsUnlocked || !IsCreated)
{
Logger.Warn($"Wallet is already unlocked or doesn't exist.");
return(IsUnlocked && IsCreated);
}
Logger.Info($"Unlock new wallet.");
var pswBytes = Encoding.UTF8.GetBytes(password);
pswBytes = SHA256.Create().ComputeHash(pswBytes);
var seed = ManagedAes.DecryptStringFromBytes_Aes(_walletFile.encryptedSeed, pswBytes, _walletFile.salt);
Chaos.NaCl.Ed25519.KeyPairFromSeed(out byte[] publicKey, out byte[] privateKey, Utils.HexToByteArray(seed));
Account = new Account(KeyType.ED25519, privateKey, publicKey);
return(true);
}
/// <summary>
/// Create a new wallet with mnemonic
/// </summary>
/// <param name="password"></param>
/// <returns></returns>
public bool Create(string password)
{
if (IsCreated)
{
Logger.Warn($"Wallet already created.");
return(true);
}
Logger.Info($"Creating new wallet.");
byte[] randomBytes = new byte[48];
_random.NextBytes(randomBytes);
var memoryBytes = randomBytes.AsMemory();
var pswBytes = Encoding.UTF8.GetBytes(password);
var salt = memoryBytes.Slice(0, 16).ToArray();
var seed = memoryBytes.Slice(16, 32).ToArray();
pswBytes = SHA256.Create().ComputeHash(pswBytes);
var encryptedSeed = ManagedAes.EncryptStringToBytes_Aes(Utils.Bytes2HexString(seed, Utils.HexStringFormat.PURE), pswBytes, salt);
_walletFile = new WalletFile(encryptedSeed, salt);
Caching.Persist(_path, _walletFile);
Chaos.NaCl.Ed25519.KeyPairFromSeed(out byte[] publicKey, out byte[] privateKey, seed);
Account = new Account(KeyType.ED25519, privateKey, publicKey);
return(true);
}
