當然,我不是說加了鹽就一勞永逸了,下面的代碼也不安全,這樣做只是爲了加大破解的難度。
import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; /** * MD5加密工具類 */ public class Md5EncryptionHelper { /** * 獲取MD5字符串 */ public static String getMD5(String content) { try { MessageDigest digest = MessageDigest.getInstance("MD5"); digest.update(content.getBytes()); return getHashString(digest); } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } return null; } private static final String SALT = "0fdfa5e5a88bebae640a5d88e7c84708"; /** * 獲取加鹽的MD5字符串 */ public static String getMD5WithSalt(String content) { return getMD5(getMD5(content) + SALT); } private static String getHashString(MessageDigest digest) { StringBuilder builder = new StringBuilder(); for (byte b : digest.digest()) { builder.append(Integer.toHexString((b >> 4) & 0xf)); builder.append(Integer.toHexString(b & 0xf)); } return builder.toString(); } }
參考:
https://www.jianshu.com/p/df70661da2d5