bitwarden/mobile
1
0
Fork 0
mirror of https://github.com/bitwarden/mobile synced 2025-12-16 00:03:22 +00:00
Code Issues Releases Wiki Activity

store previous key and userid so we can determine if stored crypto is usable before a sync

Browse Source
This commit is contained in:
Kyle Spearrin
2016-08-05 21:59:25 -04:00
parent 2d0bfe1a92
commit d96a94b478
5 changed files with 63 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
src/App/Services/CryptoService.cs
View File

@@ -4,18 +4,21 @@ using System.Text;
using Bit.App.Abstractions;
using Bit.App.Models;
using PCLCrypto;
using System.Linq;
namespace Bit.App.Services
{
public class CryptoService : ICryptoService
{
private const string KeyKey = "key";
private const string PreviousKeyKey = "previousKey";
private const int InitializationVectorSize = 16;
private readonly Random _random = new Random();
private readonly ISecureStorageService _secureStorage;
private readonly IKeyDerivationService _keyDerivationService;
private byte[] _key;
private byte[] _previousKey;
public CryptoService(
ISecureStorageService secureStorage,
@@ -44,6 +47,7 @@ namespace Bit.App.Services
}
else
{
PreviousKey = _key;
_secureStorage.Delete(KeyKey);
_key = null;
}
@@ -63,6 +67,29 @@ namespace Bit.App.Services
}
}
public byte[] PreviousKey
{
get
{
if(_previousKey == null)
{
_previousKey = _secureStorage.Retrieve(PreviousKeyKey);
}
return _previousKey;
}
private set
{
if(value != null)
{
_secureStorage.Store(PreviousKeyKey, value);
_previousKey = value;
}
}
}
public bool KeyChanged => !PreviousKey?.SequenceEqual(Key) ?? Key == null ? false : true;
public CipherString Encrypt(string plaintextValue)
{
if(Key == null)