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keystore fixes

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This commit is contained in:
Kyle Spearrin 2017-05-27 12:23:35 -04:00
parent 72f9951cb1
commit f7f4289614
1 changed files with 12 additions and 10 deletions
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22
src/Android/Services/KeyStoreBackedStorageService.cs
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@ -33,8 +33,7 @@ namespace Bit.Android.Services
public KeyStoreBackedStorageService(ISettings settings)
{
_oldKeyStorageService = new KeyStoreStorageService();
_oldKeyStorageService = new KeyStoreStorageService(new char[] { });
_settings = settings;
_keyStore = KeyStore.GetInstance(AndroidKeyStore);
@ -46,7 +45,7 @@ namespace Bit.Android.Services
public bool Contains(string key)
{
return _settings.Contains(string.Format(SettingsFormat, key));
return _settings.Contains(string.Format(SettingsFormat, key)) || _oldKeyStorageService.Contains(key);
}
public void Delete(string key)
@ -57,26 +56,28 @@ namespace Bit.Android.Services
public byte[] Retrieve(string key)
{
if(!_settings.Contains(key))
var formattedKey = string.Format(SettingsFormat, key);
if(!_settings.Contains(formattedKey))
{
return TryGetAndMigrateFromOldKeyStore(key);
}
var cipherString = _settings.GetValueOrDefault<string>(string.Format(SettingsFormat, key));
var cipherString = _settings.GetValueOrDefault<string>(formattedKey);
return AesDecrypt(cipherString);
}
public void Store(string key, byte[] dataBytes)
{
var formattedKey = string.Format(SettingsFormat, key);
CleanupOldKeyStore(key);
if(dataBytes == null)
{
_settings.Remove(key);
_settings.Remove(formattedKey);
return;
}
var cipherString = AesEncrypt(dataBytes);
_settings.AddOrUpdateValue(key, cipherString);
_settings.AddOrUpdateValue(formattedKey, cipherString);
}
private byte[] RandomBytes(int length)
@ -160,10 +161,11 @@ namespace Bit.Android.Services
private string AesEncrypt(byte[] input)
{
var cipher = Cipher.GetInstance(AesMode);
var ivBytes = RandomBytes(12);
var spec = new GCMParameterSpec(128, ivBytes);
cipher.Init(CipherMode.EncryptMode, GetAesKey(), spec);
//var ivBytes = RandomBytes(12);
//var spec = new GCMParameterSpec(128, ivBytes);
cipher.Init(CipherMode.EncryptMode, GetAesKey());
var encBytes = cipher.DoFinal(input);
var ivBytes = cipher.GetIV();
return $"{Convert.ToBase64String(ivBytes)}|{Convert.ToBase64String(encBytes)}";
}