//
//  Copyright (c) 2018 Open Whisper Systems. All rights reserved.
//

#import "Randomness.h"
#import <SessionProtocolKit/OWSAsserts.h>

@implementation Randomness

+ (NSData *)generateRandomBytes:(int)numberBytes
{
    NSMutableData *_Nullable randomBytes = [NSMutableData dataWithLength:numberBytes];
    if (!randomBytes) {
        OWSFail(@"Could not allocate buffer for random bytes.");
    }
    int err = 0;
    err = SecRandomCopyBytes(kSecRandomDefault, numberBytes, [randomBytes mutableBytes]);
    if (err != noErr || randomBytes.length != numberBytes) {
        OWSFail(@"Could not generate random bytes.");
    }
    return [randomBytes copy];
}

@end