引入OC类库
md5.h:
#import <UIKit/UIKit.h>
@interface Md5Controller : UIViewController
@end
md5.m:
#import "Md5Controller.h"
@interface Md5Controller ()
@end
@implementation Md5Controller
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
/*
#pragma mark - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/
@end
桥接文件：
#import <CommonCrypto/CommonCrypto.h>
可以直接加在文件里面：
extension String {
func md5() -> String! {
let str = self.cStringUsingEncoding(NSUTF8StringEncoding)
let strLen = CUnsignedInt(self.lengthOfBytesUsingEncoding(NSUTF8StringEncoding))
let digestLen = Int(CC_MD5_DIGEST_LENGTH)
let result = UnsafeMutablePointer<CUnsignedChar>.alloc(digestLen)
CC_MD5(str!, strLen, result)
var hash = NSMutableString()
for i in 0..<digestLen {
hash.appendFormat("%02x", result[i])
}
result.destroy()
return String(format: hash)
}
}
打印测试：
println("hello".md5())