iOS MD5加密

#import "ViewController.h"

#import "NSString+Hashing.h"

@interface ViewController ()

#define Salt @"fsdhjkfhjksdhjkfjhkd546783765"

@end

@implementation ViewController

- (void)viewDidLoad {

[super viewDidLoad];

[self digest:@"123"];

[self digest2:@"123"];

[self digest3:@"123"];

[self digest4:@"123"];

}

//直接用MD5加密

-(NSString *)digest:(NSString *)str

{

NSString *anwen =[str MD5Hash];

NSLog(@"%@-----%@",str,anwen);

return anwen;

}

//加盐

-(NSString *)digest2:(NSString *)str

{

str=[str stringByAppendingString:Salt];

NSString *anwen =[str MD5Hash];

NSLog(@"%@-----%@",str,anwen);

return anwen;

}

//多次MD5

-(NSString *)digest3:(NSString *)str

{

NSString *anwen = [str MD5Hash];

anwen = [anwen MD5Hash];

NSLog(@"%@ - %@", str, anwen);

return anwen;

}

//先加密, 后乱序

-(NSString *)digest4:(NSString *)str

{

NSString *anwen =[str MD5Hash];

NSString *header =[anwen substringFromIndex:2];

NSString *footer=[anwen substringFromIndex:2];

anwen =[footer stringByAppendingString:header];

NSLog(@"%@ - %@", str, anwen);

return anwen;

}

- (void)didReceiveMemoryWarning {

[super didReceiveMemoryWarning];

// Dispose of any resources that can be recreated.

}

@end