From 2db1aa88e8ab53096a936163d686b90d8e056a99 Mon Sep 17 00:00:00 2001
From: rain <167982779@qq.com>
Date: Wed, 21 Aug 2024 23:18:33 +0800
Subject: [PATCH] 国土对接返回信息加密
---
src/main/java/com/dji/sample/droneairport/utils/SM4Util.java | 99 +++++++++++++++++++++++++++++++++++++++++--------
1 files changed, 82 insertions(+), 17 deletions(-)
diff --git a/src/main/java/com/dji/sample/droneairport/utils/SM4Util.java b/src/main/java/com/dji/sample/droneairport/utils/SM4Util.java
index 1e721b8..55156e0 100644
--- a/src/main/java/com/dji/sample/droneairport/utils/SM4Util.java
+++ b/src/main/java/com/dji/sample/droneairport/utils/SM4Util.java
@@ -6,34 +6,92 @@
import org.bouncycastle.crypto.paddings.PKCS7Padding;
import java.nio.charset.StandardCharsets;
+import java.security.SecureRandom;
import java.util.Arrays;
import java.util.Base64;
public class SM4Util {
+
+
+ /**
+ * 生成一个随机的SM4加密密钥。
+ *
+ * SM4算法是一种对称加密算法，其密钥长度为128位（16字节）。
+ * 本方法使用安全随机数生成器生成一个16字节的随机值作为SM4密钥，
+ * 并将其转换为十六进制字符串格式以便于使用和存储。
+ *
+ * @return 返回一个表示SM4密钥的十六进制字符串。
+ */
+ public static String generateSM4Key() {
+ SecureRandom secureRandom = new SecureRandom();
+ byte[] sm4Key = new byte[8]; // SM4 密钥长度为 128 位（16 字节）
+ secureRandom.nextBytes(sm4Key);
+ String key = bytesToHex(sm4Key);
+ return key;
+ }
+
+
+ private static String bytesToHex(byte[] bytes) {
+ StringBuilder sb = new StringBuilder();
+ for (byte b : bytes) {
+ sb.append(String.format("%02x", b));
+ }
+ return sb.toString();
+ }
+ /**
+ * 使用SM4算法加密输入数据。
+ *
+ * @param key 加密密钥，应符合SM4算法的密钥长度要求。
+ * @param input 待加密的输入数据。
+ * @return 加密后的数据，以Base64编码形式表示。
+ */
public static String encrypt(byte[] key, byte[] input) {
+ // 创建并初始化SM4加密器
PaddedBufferedBlockCipher cipher = new PaddedBufferedBlockCipher(new SM4Engine(), new PKCS7Padding());
cipher.init(true, new KeyParameter(key)); // ECB模式下不需要IV
+
+ // 用于存储加密后的数据
byte[] output = new byte[cipher.getOutputSize(input.length)];
+ // 处理输入数据，进行加密
int length = cipher.processBytes(input, 0, input.length, output, 0);
+
+ // 完成加密过程，处理可能剩余的数据
try {
length += cipher.doFinal(output, length);
} catch (Exception e) {
e.printStackTrace();
}
+
+ // 使用Base64编码加密后的字节数组，并返回
String encoded = Base64.getEncoder().encodeToString(Arrays.copyOf(output, length));
return encoded;
}
+
+ /**
+ * 使用SM4算法对输入数据进行解密
+ *
+ * @param key 密钥字节数组，用于解密数据
+ * @param input 待解密的字节数组
+ * @return 解密后的字节数组
+ */
public static byte[] decrypt(byte[] key, byte[] input) {
+ // 创建基于SM4算法的缓冲分组密码对象
PaddedBufferedBlockCipher cipher = new PaddedBufferedBlockCipher(new SM4Engine(), new PKCS7Padding());
+ // 初始化密码对象为解密模式，并设置密钥参数
cipher.init(false, new KeyParameter(key)); // ECB模式下不需要IV
+ // 根据输入数据长度计算解密后的字节数组长度
byte[] output = new byte[cipher.getOutputSize(input.length)];
+ // 处理字节数组，将输入数据解密到输出字节数组中
int length = cipher.processBytes(input, 0, input.length, output, 0);
try {
+ // 完成最终的解密操作，并将长度累加到已处理字节数组中
length += cipher.doFinal(output, length);
} catch (Exception e) {
+ // 捕获并处理解密过程中的异常
e.printStackTrace();
}
+ // 返回解密后的字节数组
return Arrays.copyOf(output, length);
}
@@ -50,33 +108,40 @@
}
public static void main(String[] args) {
- byte[] key = "jsimjrby3wqb7dbq".getBytes(StandardCharsets.UTF_8); // 16字节密钥
+ System.out.println(generateSM4Key());
+ byte[] key = "2bc304ccba171672".getBytes(StandardCharsets.UTF_8); // 16字节密钥
// 原始明文
String plaintext = "{\n" +
- "\"regioncode\": \"650000\",\n" +
- "\"deviceid\": \"dh11111111111\",\n" +
- "\"brand\": \"大疆\",\n" +
- "\"model\": \"M3D\",\n" +
- "\"longitude\": 120.6670,\n" +
- "\"latitude\": 30.4567,\n" +
- "\"height\": 45,\n" +
- "\"radius\": 10000\n" +
- "}\n";
-
+ " \"deviceid\": [\n" +
+ " \"1581F6QAD241800B6V95\",\n" +
+ " \"1581F6QAD241500BDZ3J\"\n" +
+ " ],\n" +
+ " \"bizidname\": \"test\",\n" +
+ " \"tasklist\": [\n" +
+ " {\n" +
+ " \"bsm\": \"20281071717177177\",\n" +
+ " \"xzqdm\": \"31000\",\n" +
+ " \"dkbh\": \"ndbg20110210711\",\n" +
+ " \"dklx\": \"ndbg2774\",\n" +
+ " \"dkmc\": \"桥头\",\n" +
+ " \"dkmj\": 20.574,\n" +
+ " \"dkfw\": \"POLYGON((116.0216 25.8926,116.0217 25.8921,116.0205 25.8919,116.0204 25.8928,116.0214 25.8931,116.0216 25.8926))\"\n" +
+ " } ]\n" +
+ "}";
String secert =encrypt(key,plaintext.getBytes());
- System.out.println(secert);
+// System.out.println(secert);
byte[] ming= Base64.getDecoder().decode(secert);
byte[] text=decrypt(key,ming);
- System.out.println(new String(text, StandardCharsets.UTF_8));
- System.out.println("封装"+encrypt("jsimjrby3wqb7dbq","hello"));
- System.out.println("封装"+decrypt("jsimjrby3wqb7dbq","MkzmRdHSy/pB4sdTjNHb4ngG0q7Z+vWzNKdJxJFkhw4Y9tI8R9sapL6ECLyVnKZwiZbmVQFtn+sT294nCVdskK8TUx7CCI3qo21d9I4ONl+XAYnlDCtEa8KSFK3CB3/D9zRt96zEDkv31Av2rdAJW9O7Le1Z13wWGmsEqHjjrXLv5jd/Cop6+BB9+lqDRlhx+ubNOFdUgJALe4wHjZPCMdE0ob44Hx+1iLg7m/WJQWc="));
- // 直接加密
+// System.out.println(new String(text, StandardCharsets.UTF_8));
+ System.out.println(encrypt("2bc304ccba171672",plaintext));
+// System.out.println(generateSM4Key());
+// System.out.println("封装"+decrypt("8a217699714b0fc0","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"));
String encryptedBase64 = encrypt(key, plaintext.getBytes(StandardCharsets.UTF_8));
// System.out.println("Encrypted (Base64): " + encryptedBase64);
-
+// System.out.println(generateSM4Key());
// 直接解密
byte[] decoded = Base64.getDecoder().decode(encryptedBase64);
byte[] decrypted = decrypt(key, decoded);
--
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