Nethereum/src/Nethereum.KeyStore/KeyStoreService.cs at master · Nethereum/Nethereum · GitHub

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using System;

using System.IO;

using System.Text;

using Newtonsoft.Json.Linq;

namespace Nethereum.KeyStore

{

public class KeyStoreService

{

private readonly KeyStoreKdfChecker _keyStoreKdfChecker;

private readonly KeyStoreScryptService _keyStoreScryptService;

private readonly KeyStorePbkdf2Service _keyStorePbkdf2Service;

public KeyStoreService()

{

_keyStoreKdfChecker = new KeyStoreKdfChecker();

_keyStorePbkdf2Service = new KeyStorePbkdf2Service();

_keyStoreScryptService = new KeyStoreScryptService();

}

public KeyStoreService(KeyStoreKdfChecker keyStoreKdfChecker, KeyStoreScryptService keyStoreScryptService,

KeyStorePbkdf2Service keyStorePbkdf2Service)

{

_keyStoreKdfChecker = keyStoreKdfChecker;

_keyStoreScryptService = keyStoreScryptService;

_keyStorePbkdf2Service = keyStorePbkdf2Service;

}

public string GetAddressFromKeyStore(string json)

{

if (json == null) throw new ArgumentNullException(nameof(json));

var keyStoreDocument = JObject.Parse(json);

return keyStoreDocument["address"].Value<string>();

}

public string GenerateUTCFileName(string address)

{

if (address == null) throw new ArgumentNullException(nameof(address));

return "UTC--" + DateTime.UtcNow.ToString("O").Replace(":", "-") + "--" + address.Replace("0x", "");

}

#if !PCL

public byte[] DecryptKeyStoreFromFile(string password, string filePath)

{

using (var file = File.OpenText(filePath))

{

var json = file.ReadToEnd();

return DecryptKeyStoreFromJson(password, json);

}

#endif

public byte[] DecryptKeyStoreFromJson(string password, string json)

{

if (password == null) throw new ArgumentNullException(nameof(password));

if (json == null) throw new ArgumentNullException(nameof(json));

var type = _keyStoreKdfChecker.GetKeyStoreKdfType(json);

if (type == KeyStoreKdfChecker.KdfType.pbkdf2)

return _keyStorePbkdf2Service.DecryptKeyStoreFromJson(password, json);

if (type == KeyStoreKdfChecker.KdfType.scrypt)

return _keyStoreScryptService.DecryptKeyStoreFromJson(password, json);

//shold not reach here, already handled by the checker

throw new Exception("Invalid kdf type");

}

public string EncryptAndGenerateDefaultKeyStoreAsJson(string password, byte[] key, string address)

{

if (password == null) throw new ArgumentNullException(nameof(password));

if (address == null) throw new ArgumentNullException(nameof(address));

return _keyStoreScryptService.EncryptAndGenerateKeyStoreAsJson(password, key, address);

}

public string EncryptPayloadAsJson(string password, byte[] data)

{

if (data == null) throw new ArgumentNullException(nameof(data));

return _keyStoreScryptService.EncryptAndGenerateCryptoStoreAsJson(password, data);

}

public string EncryptPayloadFromStringAsJson(string password, string data)

{

if (data == null) throw new ArgumentNullException(nameof(data));

return _keyStoreScryptService.EncryptAndGenerateCryptoStoreFromStringAsJson(password, data);

}

public byte[] DecryptPayloadFromJson(string password, string json)

{

return _keyStoreScryptService.DecryptCryptoStoreFromJson(password, json);

}

public string DecryptPayloadToUtf8String(string password, string json)

{

var bytes = DecryptPayloadFromJson(password, json);

return Encoding.UTF8.GetString(bytes);

}

Nethereum/src/Nethereum.KeyStore/KeyStoreService.cs at master · Nethereum/Nethereum · GitHub

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