package project.monitor.noderpc;
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import java.security.Key;
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import javax.crypto.Cipher;
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import javax.crypto.spec.SecretKeySpec;
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import kernel.util.ConvertUtil;
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public class NodeRpcVerificationEndecrypt {
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/**
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* 加密数据
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*
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* @param encryptString 注意:这里的数据长度只能为8的倍数
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* @param encryptKey
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* @return
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* @throws Exception
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*/
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public static String encryptDES(String encryptString, String encryptKey) throws Exception {
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SecretKeySpec key = new SecretKeySpec(getKey(encryptKey), "DES");
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// Cipher cipher = Cipher.getInstance("DES/ECB/NoPadding");
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Cipher cipher = Cipher.getInstance("DES/ECB/PKCS5Padding");
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cipher.init(Cipher.ENCRYPT_MODE, key);
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byte[] encryptedData = cipher.doFinal(encryptString.getBytes());
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return ConvertUtil.bytesToHexString(encryptedData);
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}
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/**
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* 自定义一个key
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*
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* @param string
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*/
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public static byte[] getKey(String keyRule) {
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Key key = null;
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byte[] keyByte = keyRule.getBytes();
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// 创建一个空的八位数组,默认情况下为0
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byte[] byteTemp = new byte[8];
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// 将用户指定的规则转换成八位数组
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for (int i = 0; i < byteTemp.length && i < keyByte.length; i++) {
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byteTemp[i] = keyByte[i];
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}
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key = new SecretKeySpec(byteTemp, "DES");
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return key.getEncoded();
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}
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/***
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* 解密数据
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*
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* @param decryptString
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* @param decryptKey
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* @return
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* @throws Exception
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*/
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public static String decryptDES(String decryptString, String decryptKey) throws Exception {
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SecretKeySpec key = new SecretKeySpec(getKey(decryptKey), "DES");
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// Cipher cipher = Cipher.getInstance("DES/ECB/NoPadding");
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Cipher cipher = Cipher.getInstance("DES/ECB/PKCS5Padding");
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cipher.init(Cipher.DECRYPT_MODE, key);
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byte decryptedData[] = cipher.doFinal(ConvertUtil.hexStringToByte(decryptString));
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return new String(decryptedData);
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}
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// public static void main(String[] args) throws Exception {
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// String clearText = "spri"; // 这里的数据长度必须为8的倍数
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// String key = "12345678image_key";
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// System.out.println("明文:" + clearText + "\n密钥:" + key);
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// String encryptText = encryptDES(clearText, key);
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// System.out.println("加密后:" + encryptText);
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// String decryptText = decryptDES(encryptText, key);
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// System.out.println("解密后:" + decryptText);
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// }
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}
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