package ***; import javax.crypto.Cipher; import javax.crypto.spec.IvParameterSpec; import javax.crypto.spec.SecretKeySpec; import sun.misc.BASE64Decoder; import sun.misc.BASE64Encoder; /** * AES 是一种可逆加密算法,对用户的敏感信息加密处理 * 对原始数据进行AES加密后,在进行Base64编码转化; * 正确 */ public class AesCBC { /*已确认 * 加密用的Key 可以用26个字母和数字组成 * 此处使用AES-128-CBC加密模式,key需要为16位。 */ private static String sKey="1234567890123456"; private static String ivParameter="1234567890123456"; private static AesCBC instance=null; //private static private AesCBC(){ } public static AesCBC getInstance(){ if (instance==null) instance= new AesCBC(); return instance; } // 加密 public String encrypt(String sSrc, String encodingFormat, String sKey, String ivParameter) throws Exception { Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding"); byte[] raw = sKey.getBytes(); SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES"); IvParameterSpec iv = new IvParameterSpec(ivParameter.getBytes());//使用CBC模式,需要一个向量iv,可增加加密算法的强度 cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv); byte[] encrypted = cipher.doFinal(sSrc.getBytes(encodingFormat)); return new BASE64Encoder().encode(encrypted);//此处使用BASE64做转码。 } // 解密 public String decrypt(String sSrc, String encodingFormat, String sKey, String ivParameter) throws Exception { try { byte[] raw = sKey.getBytes("ASCII"); SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES"); Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding"); IvParameterSpec iv = new IvParameterSpec(ivParameter.getBytes()); cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv); byte[] encrypted1 = new BASE64Decoder().decodeBuffer(sSrc);//先用base64解密 byte[] original = cipher.doFinal(encrypted1); String originalString = new String(original,encodingFormat); return originalString; } catch (Exception ex) { return null; } } public static void main(String[] args) throws Exception { // 需要加密的字串 String cSrc = "123456"; System.out.println("加密前的字串是:"+cSrc); // 加密 String enString = AesCBC.getInstance().encrypt(cSrc,"utf-8",sKey,ivParameter); System.out.println("加密后的字串是:"+ enString); System.out.println("1jdzWuniG6UMtoa3T6uNLA==".equals(enString)); // 解密 String DeString = AesCBC.getInstance().decrypt(enString,"utf-8",sKey,ivParameter); System.out.println("解密后的字串是:" + DeString); } }
时间: 2024-10-12 08:49:35