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Code Issues Releases Wiki Activity

[PM-1817] Expand biometric integrity checks to the account level (#2498)

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* Change bio integrity validation to work at account-level

* biometric state migration

* fix account bio valid key storage location during migration

* comment clarification

* fix for iOS extensions not using custom avatar color
This commit is contained in:
mp-bw
2023-05-01 09:47:00 -04:00
committed by GitHub
parent 4f0238122b
commit 0f417b8434
22 changed files with 236 additions and 102 deletions
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47
src/Android/Services/BiometricService.cs
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@@ -4,7 +4,6 @@ using Android.OS;
using Android.Security.Keystore;
using Bit.Core.Abstractions;
using Bit.Core.Services;
using Bit.Core.Utilities;
using Java.Security;
using Javax.Crypto;
@@ -12,6 +11,8 @@ namespace Bit.Droid.Services
{
public class BiometricService : IBiometricService
{
private readonly IStateService _stateService;
private const string KeyName = "com.8bit.bitwarden.biometric_integrity";
private const string KeyStoreName = "AndroidKeyStore";
@@ -23,28 +24,28 @@ namespace Bit.Droid.Services
private readonly KeyStore _keystore;
public BiometricService()
public BiometricService(IStateService stateService)
{
_stateService = stateService;
_keystore = KeyStore.GetInstance(KeyStoreName);
_keystore.Load(null);
}
public Task<bool> SetupBiometricAsync(string bioIntegrityKey = null)
public async Task<bool> SetupBiometricAsync(string bioIntegritySrcKey = null)
{
// bioIntegrityKey used in iOS only
if (Build.VERSION.SdkInt >= BuildVersionCodes.M)
{
CreateKey();
await CreateKeyAsync(bioIntegritySrcKey);
}
return Task.FromResult(true);
return true;
}
public Task<bool> ValidateIntegrityAsync(string bioIntegrityKey = null)
public async Task<bool> IsSystemBiometricIntegrityValidAsync(string bioIntegritySrcKey = null)
{
if (Build.VERSION.SdkInt < BuildVersionCodes.M)
{
return Task.FromResult(true);
return true;
}
try
@@ -55,7 +56,7 @@ namespace Bit.Droid.Services
if (key == null || cipher == null)
{
return Task.FromResult(true);
return true;
}
cipher.Init(CipherMode.EncryptMode, key);
@@ -63,25 +64,32 @@ namespace Bit.Droid.Services
catch (KeyPermanentlyInvalidatedException e)
{
// Biometric has changed
return Task.FromResult(false);
await ClearStateAsync(bioIntegritySrcKey);
return false;
}
catch (UnrecoverableKeyException e)
{
// Biometric was disabled and re-enabled
return Task.FromResult(false);
await ClearStateAsync(bioIntegritySrcKey);
return false;
}
catch (InvalidKeyException e)
{
// Fallback for old bitwarden users without a key
LoggerHelper.LogEvenIfCantBeResolved(e);
CreateKey();
await CreateKeyAsync(bioIntegritySrcKey);
}
return Task.FromResult(true);
return true;
}
private void CreateKey()
private async Task CreateKeyAsync(string bioIntegritySrcKey = null)
{
bioIntegritySrcKey ??= Core.Constants.BiometricIntegritySourceKey;
await _stateService.SetSystemBiometricIntegrityState(bioIntegritySrcKey,
await GetStateAsync(bioIntegritySrcKey));
await _stateService.SetAccountBiometricIntegrityValidAsync(bioIntegritySrcKey);
try
{
var keyGen = KeyGenerator.GetInstance(KeyAlgorithm, KeyStoreName);
@@ -101,5 +109,16 @@ namespace Bit.Droid.Services
LoggerHelper.LogEvenIfCantBeResolved(e);
}
}
private async Task<string> GetStateAsync(string bioIntegritySrcKey)
{
return await _stateService.GetSystemBiometricIntegrityState(bioIntegritySrcKey) ??
Guid.NewGuid().ToString();
}
private async Task ClearStateAsync(string bioIntegritySrcKey)
{
await _stateService.SetSystemBiometricIntegrityState(bioIntegritySrcKey, null);
}
}
}