iOS & Android MD5 Hash

아이폰용

#import <CommonCrypto/CommonDigest.h>

+ (NSString *)uniqueIDFromString:(NSString *)source

{

    const char *src = [[source lowercaseString] UTF8String];

    unsigned char result[CC_MD5_DIGEST_LENGTH];

    CC_MD5(src, (CC_LONG)strlen(src), result);

    

    NSString *ret = [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]

                      ];

    

    return ret;

}

안드로이드용

import java.math.BigInteger;

import java.security.MessageDigest;

import java.security.NoSuchAlgorithmException;

public static String getMD5Hash(String s) {

     MessageDigest m = null;

     String hash = null;

    

     try {

          m = MessageDigest.getInstance("MD5");

          m.update(s.getBytes(),0,s.length());

          hash = new BigInteger(1, m.digest()).toString(16);

     } catch (NoSuchAlgorithmException e) {

          e.printStackTrace();

     }

    

     return hash;

}

사용법

String src = "123qwe";

String enc = getMD5Hash(src);