AndroidでMD5ハッシュを使う

参照元: http://www.androidsnippets.com/create-a-md5-hash-and-dump-as-a-hex-string

public String md5(String s) {
    try {
        // Create MD5 Hash
        MessageDigest digest = java.security.MessageDigest.getInstance("MD5");
        digest.update(s.getBytes());
        byte messageDigest[] = digest.digest();
        
        // Create Hex String
        StringBuffer hexString = new StringBuffer();
        for (int i=0; i<messageDigest.length; i++)
            hexString.append(Integer.toHexString(0xFF &amp; messageDigest[i]));
        return hexString.toString();
        
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    }
    return "";
}
// see http://androidsnippets.com/create-a-md5-hash-and-dump-as-a-hex-string