set private key on login

src/App/Abstractions/Services/ICryptoService.cs

@@ -9,7 +9,7 @@ namespace Bit.App.Abstractions
         CryptoKey Key { get; set; }
         CryptoKey PreviousKey { get; }
         bool KeyChanged { get; }
-        byte[] PrivateKey { get; set; }
+        byte[] PrivateKey { get; }
         IDictionary<Guid, CryptoKey> OrgKeys { get; set; }
 
         void SetPrivateKey(CipherString privateKeyEnc, CryptoKey key);

src/App/Models/CipherString.cs

@@ -11,7 +11,7 @@ namespace Bit.App.Models
 
         public CipherString(string encryptedString)
         {
-            if(string.IsNullOrWhiteSpace(encryptedString) || !encryptedString.Contains("|"))
+            if(string.IsNullOrWhiteSpace(encryptedString))
             {
                 throw new ArgumentException(nameof(encryptedString));
             }

src/App/Services/AuthService.cs

@@ -263,6 +263,11 @@ namespace Bit.App.Services
 
         private void ProcessLoginSuccess(CryptoKey key, TokenResponse response)
         {
+            if(response.PrivateKey != null)
+            {
+                _cryptoService.SetPrivateKey(new CipherString(response.PrivateKey), key);
+            }
+
             _cryptoService.Key = key;
             _tokenService.Token = response.AccessToken;
             _tokenService.RefreshToken = response.RefreshToken;

src/App/Services/CryptoService.cs

@@ -112,7 +112,7 @@ namespace Bit.App.Services
 
                 return _privateKey;
             }
-            set
+            private set
             {
                 if(value != null)
                 {