加密解密,前端加密,后端解密

package com.zzy.utils; import java.io.IOException; import java.io.UnsupportedEncodingException; import java.security.InvalidKeyException; import java.security.NoSuchAlgorithmException; import java.security.SecureRandom; import java.util.Base64; import javax.crypto.BadPaddingException; import javax.crypto.Cipher; import javax.crypto.IllegalBlockSizeException; import javax.crypto.KeyGenerator; import javax.crypto.NoSuchPaddingException; import javax.crypto.SecretKey; import javax.crypto.spec.SecretKeySpec; import org.junit.Test; public class AESEncryptUtil { public static void main(String[] args){ String content = "test12321郭凯歌"; String password = "12345678"; System.out.println("加密前：" + content); // 加密 String encryptResult = encrypt(content, password); System.out.println("加密后：" + encryptResult); // 解密 String decryptResult = decrypt(encryptResult, password); System.out.println("解密后：" + decryptResult); //解密编码设置为utf-8就可以了 } @Test public void testAes(){ // 解密 String decryptResult = decrypt("NWMwMWY4Y2M2ZWJiNjFiODNmMjI1NmQzYTdmMzlhNmE=", "Secret Passphrase"); System.out.println("解密后：" + decryptResult); //解密编码设置为utf-8就可以了 } /** * Description 根据键值进行加密 * @param data * @param key 加密键byte数组 * @return * @throws Exception */ public static String encrypt(String data, String key){ byte[] bt = encrypt(data, key,"utf-8"); String strs = Base64.getEncoder().encodeToString(bt); return strs; } /** * Description 根据键值进行解密 * @param data * @param key 加密键byte数组 * @return * @throws UnsupportedEncodingException * @throws IOException * @throws Exception */ public static String decrypt(String data, String key){ if (data == null) return null; byte[] buf = Base64.getDecoder().decode(data); System.out.println(new String(buf)); byte[] bt = decrypt(buf,key); return new String(bt); } /** * 加密 * * @param content * 需要加密的内容 * @param password * 加密密码 * @return */ public static byte[] encrypt(String content, String password ,String charset) { try { KeyGenerator kgen = KeyGenerator.getInstance("AES"); kgen.init(128, new SecureRandom(password.getBytes())); SecretKey secretKey = kgen.generateKey(); byte[] enCodeFormat = secretKey.getEncoded(); SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES"); Cipher cipher = Cipher.getInstance("AES");// 创建密码器 byte[] byteContent = content.getBytes(charset); cipher.init(Cipher.ENCRYPT_MODE, key);// 初始化 byte[] result = cipher.doFinal(byteContent); return result; // 加密 } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } catch (NoSuchPaddingException e) { e.printStackTrace(); } catch (InvalidKeyException e) { e.printStackTrace(); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } catch (IllegalBlockSizeException e) { e.printStackTrace(); } catch (BadPaddingException e) { e.printStackTrace(); } return null; } /** * 解密 * * @param content * 待解密内容 * @param password * 解密密钥 * @return */ public static byte[] decrypt(byte[] content, String password) { try { KeyGenerator kgen = KeyGenerator.getInstance("AES"); kgen.init(128, new SecureRandom(password.getBytes())); SecretKey secretKey = kgen.generateKey(); byte[] enCodeFormat = secretKey.getEncoded(); SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES"); Cipher cipher = Cipher.getInstance("AES");// 创建密码器 cipher.init(Cipher.DECRYPT_MODE, key);// 初始化 byte[] result = cipher.doFinal(content); return result; // 加密 } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } catch (NoSuchPaddingException e) { e.printStackTrace(); } catch (InvalidKeyException e) { e.printStackTrace(); } catch (IllegalBlockSizeException e) { e.printStackTrace(); } catch (BadPaddingException e) { e.printStackTrace(); } return null; } /** * 将二进制转换成16进制 * * @param buf * @return */ public static String parseByte2ToByte16Str(byte buf[]) { StringBuffer sb = new StringBuffer(); for (int i = 0; i < buf.length; i++) { String hex = Integer.toHexString(buf[i] & 0xFF); if (hex.length() == 1) { hex = '0' + hex; } sb.append(hex.toUpperCase()); } return sb.toString(); } /** * 将16进制转换为二进制 * * @param hexStr * @return */ public static byte[] parseByte16StrToByte2(String hexStr) { if (hexStr.length() < 1) return null; byte[] result = new byte[hexStr.length() / 2]; for (int i = 0; i < hexStr.length() / 2; i++) { int high = Integer.parseInt(hexStr.substring(i * 2, i * 2 + 1), 16); int low = Integer.parseInt(hexStr.substring(i * 2 + 1, i * 2 + 2), 16); result[i] = (byte) (high * 16 + low); } return result; } }