/// <summary>
/// Creates an Account, ecrypts it using NEP2 and returns it.
/// </summary>
/// <returns></returns>
public async Task <Account> CreateAccount(string label, string password)
{
var privateKey = new byte[32];
using (var rng = RandomNumberGenerator.Create())
{
rng.GetBytes(privateKey);
}
var key = new KeyPair(privateKey);
Array.Clear(privateKey, 0, privateKey.Length);
var contract = new Contract
{
Script = Helper.CreateSignatureRedeemScript(key.PublicKey),
Parameters = new List <Parameter>
{
new Parameter("signature", ParameterType.Signature)
},
Deployed = false
};
var encryptedKey = await Nep2.Encrypt(key.Export(), password);
var account = new Account(contract.ScriptHash, key)
{
Nep2Key = encryptedKey,
Contract = contract,
Label = label
};
AddAccount(account);
return(account);
}
/// <summary>
/// Decrypts and add the account to the Wallet Account List, using NEP2.
/// </summary>
/// <param name="label"></param>
/// <param name="encryptedPrivateKey"></param>
/// <param name="password"></param>
/// <returns></returns>
public async Task <Account> ImportAccount(string encryptedPrivateKey, string password, string label)
{
var privateKey = await Nep2.Decrypt(encryptedPrivateKey, password, _wallet.Scrypt);
var key = new KeyPair(privateKey);
Array.Clear(privateKey, 0, privateKey.Length);
var contract = new Contract
{
Script = Helper.CreateSignatureRedeemScript(key.PublicKey),
Parameters = new List <Parameter>
{
new Parameter("signature", ParameterType.Signature)
},
Deployed = false
};
var account = new Account(contract.ScriptHash, key)
{
Nep2Key = encryptedPrivateKey,
Label = label,
Contract = contract,
IsDefault = false
};
AddAccount(account);
return(account);
}
/// <summary>
/// Gets the KeyPair object using the encrypted key and password pair.
/// </summary>
/// <param name="nep2Key"></param>
/// <param name="password"></param>
/// <returns></returns>
public async Task <KeyPair> GetKey(string nep2Key, string password)
{
if (nep2Key == null)
{
return(null);
}
var decryptedKey = await Nep2.Decrypt(nep2Key, password, _wallet.Scrypt);
var privKey = new KeyPair(decryptedKey);
return(privKey);
}
/// <summary>
/// Verifies if the provided encrypted key and password are correct.
/// </summary>
/// <param name="nep2Key"></param>
/// <param name="password"></param>
/// <returns></returns>
public async Task <bool> VerifyPassword(string nep2Key, string password)
{
try
{
await Nep2.Decrypt(nep2Key, password, _wallet.Scrypt);
return(true);
}
catch (FormatException)
{
return(false);
}
}