端对端加密（js+java）

package com.dhcc.util; import java.security.Key; import java.security.SecureRandom; import javax.crypto.Cipher; import javax.crypto.SecretKeyFactory; import javax.crypto.spec.DESedeKeySpec; import sun.misc.BASE64Decoder; import sun.misc.BASE64Encoder; /** * des加密解密 * * @author * */ public class DesEncrypt { Key key; public DesEncrypt(String str) { setKey(str);// 生成密匙 } public DesEncrypt() { setKey("abc123.*abc123.*abc123.*abc123.*"); } /** * 根据参数生成KEY */ public void setKey(String strKey) { try { //对比DES SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DESede"); this.key = keyFactory.generateSecret(new DESedeKeySpec(strKey.getBytes("UTF8"))); } catch (Exception e) { throw new RuntimeException( "Error initializing SqlMap class. Cause: " + e); } } /** * 加密String明文输入,String密文输出 */ public String encrypt(String strMing) { byte[] byteMi = null; byte[] byteMing = null; String strMi = ""; BASE64Encoder base64en = new BASE64Encoder(); try { byteMing = strMing.getBytes("UTF8"); byteMi = this.getEncCode(byteMing); strMi = base64en.encode(byteMi); } catch (Exception e) { throw new RuntimeException( "Error initializing SqlMap class. Cause: " + e); } finally { base64en = null; byteMing = null; byteMi = null; } return strMi; } /** * 解密 以String密文输入,String明文输出 * * @param strMi * @return */ public String decrypt(String strMi) { BASE64Decoder base64De = new BASE64Decoder(); byte[] byteMing = null; byte[] byteMi = null; String strMing = ""; try { byteMi = base64De.decodeBuffer(strMi); byteMing = this.getDesCode(byteMi); strMing = new String(byteMing, "UTF8"); } catch (Exception e) { throw new RuntimeException( "Error initializing SqlMap class. Cause: " + e); } finally { base64De = null; byteMing = null; byteMi = null; } return strMing; } /** * 加密以byte[]明文输入,byte[]密文输出 * * @param byteS * @return */ private byte[] getEncCode(byte[] byteS) { byte[] byteFina = null; Cipher cipher; try {//对比DES cipher = Cipher.getInstance("DESede"); cipher.init(Cipher.ENCRYPT_MODE, key,SecureRandom.getInstance("SHA1PRNG")); byteFina = cipher.doFinal(byteS); } catch (Exception e) { throw new RuntimeException( "Error initializing SqlMap class. Cause: " + e); } finally { cipher = null; } return byteFina; } /** * 解密以byte[]密文输入,以byte[]明文输出 * * @param byteD * @return */ private byte[] getDesCode(byte[] byteD) { Cipher cipher; byte[] byteFina = null; try {//对比DES cipher = Cipher.getInstance("DESede"); cipher.init(Cipher.DECRYPT_MODE, key,SecureRandom.getInstance("SHA1PRNG")); byteFina = cipher.doFinal(byteD); } catch (Exception e) { throw new RuntimeException( "Error initializing SqlMap class. Cause: " + e); } finally { cipher = null; } return byteFina; } public static void main(String args[]) { DesEncrypt des = new DesEncrypt(); String str1 = "asssAAASSS.*/中"; // DES加密 String str2 = des.encrypt(str1); DesEncrypt des1 = new DesEncrypt(); String deStr = des1.decrypt(str2); System.out.println("密文:" + str2); // DES解密 System.out.println("明文:" + deStr); } }