TBKeychainCounter.h

//
//  TBKeychainCounter.h
//
//  Created by Tal Bereznitskey on 5/11/13.
//  Copyright (c) 2013 Tal Bereznitskey. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface TBKeychainCounter : NSObject

+ (NSInteger)counterForKey:(NSString *)key;
+ (void)increaseCounterForKey:(NSString *)key;

@end

TBKeychainCounter.m

//
//  TBKeychainCounter.m
//
//  Created by Tal Bereznitskey on 5/11/13.
//  Copyright (c) 2013 Tal Bereznitskey. All rights reserved.
//

#import "TBKeychainCounter.h"
#import "PDKeychainBindings.h"

@implementation TBKeychainCounter

+ (NSInteger)counterForKey:(NSString *)key
{
    return [[[PDKeychainBindings sharedKeychainBindings] objectForKey:key] integerValue];
}

+ (void)increaseCounterForKey:(NSString *)key
{
    NSInteger counter = [self counterForKey:key] + 1;
    NSString *counterString = [NSString stringWithFormat:@"%d", counter];
    [[PDKeychainBindings sharedKeychainBindings] setObject:counterString forKey:key];
}

@end