AES实现

pay-java-common/src/main/java/com/egzosn/pay/common/util/XML.java

@@ -240,10 +240,7 @@ public class XML {
                 }
             }
         }
-        catch (ParserConfigurationException e) {
-            throw new PayErrorException(new PayException("XML failure", "XML解析失败\n" + e.getMessage()));
-        }
-        catch (SAXException e) {
+        catch (ParserConfigurationException | SAXException e) {
             throw new PayErrorException(new PayException("XML failure", "XML解析失败\n" + e.getMessage()));
         }
         finally {

pay-java-common/src/main/java/com/egzosn/pay/common/util/sign/encrypt/AES.java

@@ -0,0 +1,77 @@
+package com.egzosn.pay.common.util.sign.encrypt;
+
+import java.io.IOException;
+import java.security.GeneralSecurityException;
+import java.security.Security;
+
+import javax.crypto.Cipher;
+import javax.crypto.spec.SecretKeySpec;
+
+import org.apache.commons.codec.digest.DigestUtils;
+import org.bouncycastle.jce.provider.BouncyCastleProvider;
+
+/**
+ * AES 加解密
+ *
+ * @author Egan
+ * <pre>
+ *  email egan@egzosn.com
+ *  date 2022/3/20
+ *  </pre>
+ */
+public class AES {
+    /**
+     * 密钥算法
+     */
+    private static final String ALGORITHM = "AES";
+    /**
+     * 加解密算法/工作模式/填充方式
+     */
+    private static final String ALGORITHM_MODE_PADDING = "AES/ECB/PKCS7Padding";
+
+    static {
+        if (null == Security.getProvider("BC")) {
+            Security.removeProvider("SunEC");
+            Security.addProvider(new BouncyCastleProvider());
+        }
+    }
+
+    /**
+     * 解密
+     *
+     * @param content           密文
+     * @param privateKey        商户私钥
+     * @param characterEncoding 编码格式
+     * @return 解密后的字符串
+     * @throws GeneralSecurityException 解密异常
+     * @throws IOException              IOException
+     */
+    public static String decrypt(String content, String privateKey, String characterEncoding) throws GeneralSecurityException, IOException {
+        byte[] reqInfoB = Base64.decode(content);
+        String key$ = DigestUtils.md5Hex(privateKey).toLowerCase();
+        Cipher cipher = Cipher.getInstance(ALGORITHM_MODE_PADDING, "BC");
+        SecretKeySpec secretKeySpec = new SecretKeySpec(key$.getBytes(), ALGORITHM);
+        cipher.init(Cipher.DECRYPT_MODE, secretKeySpec);
+        return new String(cipher.doFinal(reqInfoB), characterEncoding);
+    }
+
+    /**
+     * 解密
+     *
+     * @param content           密文
+     * @param privateKey        商户私钥
+     * @param characterEncoding 编码格式
+     * @return 解密后的字符串
+     * @throws GeneralSecurityException 解密异常
+     * @throws IOException              IOException
+     */
+    public static String encrypt(String content, String privateKey, String characterEncoding) throws GeneralSecurityException, IOException {
+        String key$ = DigestUtils.md5Hex(privateKey).toLowerCase();
+        Cipher cipher = Cipher.getInstance(ALGORITHM_MODE_PADDING, "BC");
+        SecretKeySpec secretKeySpec = new SecretKeySpec(key$.getBytes(), ALGORITHM);
+        cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec);
+        byte[] doFinal = cipher.doFinal(content.getBytes(characterEncoding));
+        return Base64.encode(doFinal);
+    }
+
+}