[资产资源接口] <add> DES解密

src/main/java/com/mth/requestsecret/util/AESUtils.java

@@ -5,9 +5,12 @@ import org.apache.commons.lang.StringUtils;
 import org.bouncycastle.jce.provider.BouncyCastleProvider;
 
 import javax.crypto.Cipher;
+import javax.crypto.SecretKeyFactory;
+import javax.crypto.spec.DESedeKeySpec;
 import javax.crypto.spec.IvParameterSpec;
 import javax.crypto.spec.SecretKeySpec;
 import java.nio.charset.StandardCharsets;
+import java.security.Key;
 import java.security.Security;
 import java.util.Base64;
 
@@ -129,4 +132,55 @@ public class AESUtils {
         }
     }
 
+    /**
+     * 16进制字符串转字节数组
+     *
+     * @param hexStr
+     * @return
+     */
+    public static byte[] hexStr2Byte(String hexStr) {
+        String str = "0123456789ABCDEF";
+        char[] hexs = hexStr.toCharArray();
+        byte[] bytes = new byte[hexStr.length() / 2];
+        int n;
+        for (int i = 0; i < bytes.length; i++) {
+            n = str.indexOf(hexs[2 * i]) * 16;
+            n += str.indexOf(hexs[2 * i + 1]);
+            bytes[i] = (byte) (n & 0xff);
+        }
+        return bytes;
+    }
+
+
+    public static void main(String[] args) throws Exception {
+
+        // 秘钥
+        String key = "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4";
+        // 待解密参数
+        String content = "6B2E012D451E446DA87BED8BB65F23879D27E80BAE10980BBC79BA0EC894392C7CC82E659370A366";
+
+        try {
+            // 算法/模式/补码方式
+            Cipher cipher = Cipher.getInstance("desede/ECB/NoPadding");
+            // key
+            DESedeKeySpec keySpec = new DESedeKeySpec(Base64.getDecoder().decode(key));
+
+            //获取DES秘钥生成器对象
+            SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("desede");
+
+            // 生成秘钥：key的长度不能够小于8位字节
+            Key secretKey = keyFactory.generateSecret(keySpec);
+
+            cipher.init(Cipher.DECRYPT_MODE, secretKey);
+
+            byte[] origin = cipher.doFinal(hexStr2Byte(content));
+
+            System.out.println(new String(origin));
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+
+    }
+
+
 }