参考:http://*.com/questions/1524604/md5-algorithm-in-objective-c
在线测试MD5:http://www.cmd5.com/
需求: 将字符串进行MD5加密,返回加密后的字符串。
#import <CommonCrypto/CommonDigest.h> // 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] ]; }