提高Objective-C中随机性的质量

#import<Foundation/Foundation.h>
#import<Security/Security.h>

int main(int argc, const char * argv[]) {
    @autoreleasepool {
        NSMutableData *randomData = [NSMutableData dataWithLength:4];
        SecRandomCopyBytes(kSecRandomDefault, randomData.length, randomData.mutableBytes);
        uint32_t randomNumber = *(uint32_t *)randomData.bytes;
        NSLog(@"Random number: %u", randomNumber);
    }
    return 0;
}