Increased default rounds for password hashing to 50000 and added default settings key

MacPass/MPDocument.m

@@ -119,6 +119,7 @@ NSString *const MPDocumentGroupKey                        = @"MPDocumentGroupKey
     _activeFlags = MPEntrySearchTitles;
     _hasSearch = NO;
     self.tree = [KPKTree templateTree];
+    self.tree.metaData.rounds = [[NSUserDefaults standardUserDefaults] integerForKey:kMPSettingsKeyDefaultPasswordRounds];
   }
   return self;
 }

MacPass/MPSettingsHelper.h

@@ -59,6 +59,7 @@ APPKIT_EXTERN NSString *const kMPSettingsKeyEnableQuicklookPreview;
 
 /* Password Generation */
 APPKIT_EXTERN NSString *const kMPSettingsKeyCopyGeneratedPasswordToClipboard;
+APPKIT_EXTERN NSString *const kMPSettingsKeyDefaultPasswordRounds;
 
 typedef NS_ENUM(NSUInteger, MPPasswordEncoding) {
   MPPasswordEncodingUTF8,

MacPass/MPSettingsHelper.m

@@ -42,6 +42,8 @@ NSString *const kMPSettingsKeyEnableQuicklookPreview        = @"EnableQuicklookP
 
 NSString *const kMPSettingsKeyCopyGeneratedPasswordToClipboard = @"CopyGeneratedPasswordToClipboard";
 
+NSString *const kMPSettingsKeyDefaultPasswordRounds         = @"KeyDefaultPasswordRounds";
+
 @implementation MPSettingsHelper
 
 + (void)setupDefaults {
@@ -81,6 +83,7 @@ NSString *const kMPSettingsKeyCopyGeneratedPasswordToClipboard = @"CopyGenerated
            kMPSettingsKeyEnableGlobalAutotype: @NO,
            kMPSettingsKeyEnableQuicklookPreview: @NO,
            kMPSettingsKeyCopyGeneratedPasswordToClipboard: @NO,
+           kMPSettingsKeyDefaultPasswordRounds: @50000
            };
 }