JSONStore security utilities iOS examples

Learn about JSONStore security utilities iOS examples.

Encryption and decryption

// User provided password, hardcoded only for simplicity.
NSString* password = @"HelloPassword";
// Random salt with recommended length.
NSString* salt = [WLSecurityUtils generateRandomStringWithBytes:32];
// Recomended number of iterations.
int iterations = 10000;
// Populated with an error if one occurs.
NSError* error = nil;
// Call that generates the key.
NSString* key = [WLSecurityUtils generateKeyWithPassword:password
                                 andSalt:salt
                                 andIterations:iterations
                                 error:&error];
// Text that is encrypted.
NSString* originalString = @"My secret text";
NSDictionary* dict = [WLSecurityUtils encryptText:originalString
                                      withKey:key
                                      error:&error];
// Should return: 'My secret text'.
NSString* decryptedString = [WLSecurityUtils decryptWithKey:key
                                             andDictionary:dict
                                             error:&error];

Encode and decode base64

// Input string.
NSString* originalString = @"Hello world!";
// Encode to base64.
NSData* originalStringData = [originalString dataUsingEncoding:NSUTF8StringEncoding];
NSString* encodedString = [WLSecurityUtils base64StringFromData:originalStringData length:originalString.length];
// Should return: 'Hello world!'.
NSString* decodedString = [[NSString alloc] initWithData:[WLSecurityUtils base64DataFromString:encodedString] encoding:NSUTF8StringEncoding];

Get remote random

[WLSecurityUtils getRandomStringFromServerWithBytes:32 
                 timeout:1000
                 completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {
  // You might want to see the response and the connection error before moving forward.
  // Get the secure random string.
  NSString* secureRandom = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
}];

Get local random

NSString* secureRandom = [WLSecurityUtils generateRandomStringWithBytes:32];

Parent topic: JSONStore security utilities examples