IOS MD5加密方法

方法一、

#import <CommonCrypto/CommonDigest.h>

@interface NSString (md5)

-(NSString *) md5HexDigest;

@end

#import "NSString+MD5HexDigest.h"

@implementation NSString (md5)

-(NSString *) md5HexDigest

{

const char *original_str = [self UTF8String];

unsigned char result[CC_MD5_DIGEST_LENGTH];

CC_MD5(original_str, strlen(original_str), result);

NSMutableString *hash = [NSMutableString string];

for (int i = 0; i < 16; i++)

[hash appendFormat:@"%02X", result[i]];

return [hash lowercaseString];

}

@end

方法二、

将字符串进行MD5加密，返回加密后的字符串。 #import // Need to import for CC_MD5 access - (NSString *)md5:(NSString *)str { const char *cStr = [str UTF8String]; unsigned char result[16]; CC_MD5(cStr, strlen(cStr), result); // This is the md5 call return [NSString stringWithFormat: @"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x", result[0], result[1], result[2], result[3], result[4], result[5], result[6], result[7], result[8], result[9], result[10], result[11], result[12], result[13], result[14], result[15] ]; }