客户档案的合同添加、复制健康调查链接

stdiet-common/src/main/java/com/stdiet/common/utils/sign/AesUtils.java

@@ -0,0 +1,95 @@
+package com.stdiet.common.utils.sign;
+
+import org.apache.commons.codec.binary.Hex;
+
+import javax.crypto.Cipher;
+import javax.crypto.KeyGenerator;
+import javax.crypto.SecretKey;
+import javax.crypto.spec.SecretKeySpec;
+import java.security.SecureRandom;
+
+/**
+ * AES加密工具类
+ */
+public class AesUtils {
+
+    private static final String KEY_ALGORITHM = "AES";
+    private static final int KEYSIZE = 128;                //AES密钥长度
+    private static final String DEFAULT_CIPHER_ALGORITHM = "AES/ECB/PKCS5Padding";  //默认的加密算法
+    private static final String DEFAULT_KEY = "Yhokm#876OTG!c";
+
+    /**
+     * AES 加密操作
+     * @param content  待加密内容
+     * @param key 加密密码
+     * @return 返回Base64转码后的加密数据
+     */
+    public static String encrypt(String content, String key) {
+        key = key == null ? DEFAULT_KEY : key;
+        try {
+            Cipher cipher = Cipher.getInstance(DEFAULT_CIPHER_ALGORITHM);// 创建密码器
+
+            byte[] byteContent = content.getBytes("utf-8");
+
+            cipher.init(Cipher.ENCRYPT_MODE, getSecretKey(key));  // 初始化为加密模式的密码器
+
+            byte[] result = cipher.doFinal(byteContent);  // 加密
+
+            return Hex.encodeHexString(result);
+            //return Base64Utils.encodeToString(result);  //通过Base64转码返回
+        } catch (Exception ex) {
+            ex.printStackTrace();
+        }
+
+        return null;
+    }
+
+    /**
+     * AES 解密操作
+     * @param content
+     * @param key
+     * @return
+     */
+    public static String decrypt(String content, String key) {
+        key = key == null ? DEFAULT_KEY : key;
+        try {
+            //实例化
+            Cipher cipher = Cipher.getInstance(DEFAULT_CIPHER_ALGORITHM);
+
+            //使用密钥初始化，设置为解密模式
+            cipher.init(Cipher.DECRYPT_MODE, getSecretKey(key));
+
+            //执行操作
+            byte[] result = cipher.doFinal(Hex.decodeHex(content));//Base64Utils.decodeFromString(content)
+
+            return new String(result, "utf-8");
+        } catch (Exception ex) {
+            ex.printStackTrace();
+        }
+
+        return null;
+    }
+
+    /**
+     * 生成加密秘钥
+     *
+     * @return
+     */
+    private static SecretKeySpec getSecretKey(String key) {
+        //返回生成指定算法密钥生成器的 KeyGenerator 对象
+        KeyGenerator kg = null;
+        try {
+            kg = KeyGenerator.getInstance(KEY_ALGORITHM);
+            SecureRandom random = SecureRandom.getInstance("SHA1PRNG");
+            random.setSeed(key.getBytes());
+            //AES 要求密钥长度为 128
+            kg.init(KEYSIZE, random);
+            //生成一个密钥
+            SecretKey secretKey = kg.generateKey();
+            return new SecretKeySpec(secretKey.getEncoded(), KEY_ALGORITHM);// 转换为AES专用密钥
+        } catch (Exception ex) {
+            ex.printStackTrace();
+        }
+        return null;
+    }
+}