3DES加解密代码
package com.albedo.security; import javax.crypto.Cipher; import javax.crypto.SecretKeyFactory; import javax.crypto.spec.DESKeySpec; import javax.crypto.spec.DESedeKeySpec; import javax.crypto.spec.IvParameterSpec; import java.security.Key; import java.security.SecureRandom; import java.util.Base64; /** * des 加解密实现 */ public class DES3Util { //字符编码 public static final String CHARSET_UTF8 = "UTF-8"; //加密算法DES public static final String DES3 = "desede"; //电话本模式 public static final String DES3_ECB = "DESEDE/ECB/PKCS5Padding"; //加密块链模式--推荐 public static final String DES3_CBC = "DESEDE/CBC/PKCS5Padding"; /** * 生成key * * @param password * @return * @throws Exception */ private static Key generateKey(String password) throws Exception { //由于DES3密码不能小于24位,因此,任意长度密码经过Md5转化后,变为定长32位执行加解密处理 DESedeKeySpec dks = new DESedeKeySpec(Md5Utils.encrypt(password).getBytes(CHARSET_UTF8)); SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES3); return keyFactory.generateSecret(dks); } /** * 3DES加密字符串--ECB格式 * * @param password 加密密码,长度不能够小于8位 * @param data 待加密字符串 * @return 加密后内容 */ public static String encryptECB(String password, String data) throws Exception{ Key secretKey = generateKey(password); Cipher cipher = Cipher.getInstance(DES3_ECB); cipher.init(Cipher.ENCRYPT_MODE, secretKey, new SecureRandom()); byte[] bytes = cipher.doFinal(data.getBytes(CHARSET_UTF8)); //JDK1.8及以上可直接使用Base64,JDK1.7及以下可以使用BASE64Encoder return new String(Base64.getEncoder().encode(bytes)); } /** * 3DES解密字符串--ECB格式 * * @param password 解密密码,长度不能够小于8位 * @param data 待解密字符串 * @return 解密后内容 */ public static String decryptECB(String password, String data) throws Exception { Key secretKey = generateKey(password); Cipher cipher = Cipher.getInstance(DES3_ECB); cipher.init(Cipher.DECRYPT_MODE, secretKey, new SecureRandom()); return new String(cipher.doFinal(Base64.getDecoder().decode(data.getBytes(CHARSET_UTF8))), CHARSET_UTF8); } /** * 3DES加密字符串-CBC加密格式 * * @param password 加密密码,长度不能够小于8位 * @param data 待加密字符串 * @return 加密后内容 */ public static String encryptCBC(String password, String data) throws Exception{ Key secretKey = generateKey(password); Cipher cipher = Cipher.getInstance(DES3_CBC); IvParameterSpec spec=new IvParameterSpec("12345678".getBytes(CHARSET_UTF8)); cipher.init(Cipher.ENCRYPT_MODE, secretKey, spec); byte[] bytes = cipher.doFinal(data.getBytes(CHARSET_UTF8)); //JDK1.8及以上可直接使用Base64,JDK1.7及以下可以使用BASE64Encoder return new String(Base64.getEncoder().encode(bytes)); } /** * 3DES解密字符串--CBC格式 * * @param password 解密密码,长度不能够小于8位 * @param data 待解密字符串 * @return 解密后内容 */ public static String decryptCBC(String password, String data) throws Exception { Key secretKey = generateKey(password); Cipher cipher = Cipher.getInstance(DES3_CBC); IvParameterSpec spec=new IvParameterSpec("12345679".getBytes(CHARSET_UTF8)); cipher.init(Cipher.DECRYPT_MODE, secretKey, spec); return new String(cipher.doFinal(Base64.getDecoder().decode(data.getBytes(CHARSET_UTF8))), CHARSET_UTF8); } }