Aspose最版本aspose-words:jdk17:23.6 版本，代码分析心得

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本文的逆向分析参考了了博客： https://blog.youkuaiyun.com/qiumin333/article/details/130177125

POM配置如下：

   <dependency>
            <groupId>com.aspose</groupId>
            <artifactId>aspose-words</artifactId>
            <version>23.6</version>
            <classifier>jdk17</classifier>
        </dependency>
        <dependency>
            <groupId>com.aspose</groupId>
            <artifactId>aspose-words</artifactId>
            <version>23.6</version>
            <classifier>javadoc</classifier>
        </dependency>



    <repositories>
        <repository>
            <id>AsposeJavaAPI</id>
            <name>Aspose Java API</name>
            <url>https://releases.aspose.com/java/repo/</url>
        </repository>
    </repositories>

代码逆向分析：
License类：

//
// Source code recreated from a .class file by IntelliJ IDEA
// (powered by FernFlower decompiler)
//

package com.aspose.words;

import com.aspose.words.internal.zzYal;
import com.aspose.words.internal.zzZE5;
import java.io.InputStream;

public class License {
    public License() {
        zzYal.zzZ9g();
    }

    public void setLicense(String licenseName) throws Exception {
        if (licenseName == null) {
            throw new NullPointerException(zzYal.zzZ9g().zzWkU(new byte[]{105, 108, 101, 99, 115, 110, 78, 101, 109, 97, 101}));
        } else {
            (new zzWXG()).zzZyR(licenseName, zzZE5.zzW3M());
        }
    }

    public void setLicense(InputStream stream) throws Exception {
        if (stream == null) {
            throw new NullPointerException(zzYal.zzZ9g().zzWkU(new byte[]{116, 115, 101, 114, 109, 97}));
        } else {
            new zzWXG();
            zzWXG.zzYFZ(stream);
        }
    }
}

zzWXG类 zzYFZ方法：

    static void zzYFZ(InputStream var0) throws Exception {
        if (var0 == null) {
            throw new NullPointerException(zzYal.zzZ9g().zzWkU(new byte[]{116, 115, 101, 114, 109, 97}));
        } else {
            zzYKl var1 = zzws(var0);
            zzX54(var1);
            if (var1.zzWtQ()) {
                throw new IllegalStateException(zz0D.zzY5k(zzZHl.zzZVX(zzWjW.zzXGO()), new Object[]{var1.zzY0M().zzY5k(zzYal.zzZ9g().zzWkU(new byte[]{100, 100, 77, 32, 77, 77, 121, 32, 121, 121, 121}), zzXP5.zzYP8()), zzYKl.zzZlw().zzY5k(zzYal.zzZ9g().zzWkU(new byte[]{100, 100, 77, 32, 77, 77, 121, 32, 121, 121, 121}), zzXP5.zzYP8())}));
            } else if (var1.zzWgw()) {
                throw new IllegalStateException(zzZHl.zzZVX(zzWjW.zzXbd()));
            } else {
				  /* 把注册成功的解析完成的注册信息放到数组中
           这里很关键，最终我们要构造一个 zzYKl 对象放到 zzZzA数组中去
        */
                synchronized(zzXNY) {
                    if (zzZzA.indexOf(var1) == -1) {
                        zzZzA.add(var1);
                    }

                }
            }
        }
    }

//  zzws方法 ，主要看 几个会抛异常的方法   var7.zzYJ1()  和   !zzZGo(var7.getData(), var7.zzYnU(), var7.zzWrz())
    private static zzYKl zzws(InputStream var0) throws Exception {
        DocumentBuilderFactory var1 = zzXsu.zzsM();
        DocumentBuilder var2 = var1.newDocumentBuilder();
        Document var3 = var2.parse(var0);
        Element var4 = var3.getDocumentElement();
        Element var5 = zzv8(var4, zzYal.zzZ9g().zzWkU(new byte[]{97, 68, 97, 116}));
        Element var6 = zzv8(var4, zzYal.zzZ9g().zzWkU(new byte[]{105, 83, 110, 103, 116, 97, 114, 117, 101}));
        if (var5 != null && var6 != null) {
            zzYKl var7 = zzX54(var5, var6);
            //注册码是否有效
            if (var7.zzYJ1() == 0) {
                throw new IllegalStateException(zzZHl.zzZVX(zzWjW.zzXab()));

  			  // 验证签名 getData() Data标签数据，zzYnU() Signature标签数据，zzWrz() 1
            } else if (!zzZGo(var7.getData(), var7.zzYnU(), var7.zzWrz())) {
                throw new IllegalStateException(zzZHl.zzZVX(zzWjW.zzVT5()));
            } else {
                return var7;
            }
        } else {
            throw new IllegalStateException(zzZHl.zzZVX(zzWjW.zzYyR()));
        }
    }

破解Java方法（只需要在程序启动的时候调用这个方法一次即可）：

	/**
	 * aspose-words:jdk17:23.6 版本
	 */
	public static void registerWord() {
			// 构造一个注册信息
		try {
			Class<?> zzXgCClass = Class.forName("com.aspose.words.zzYKl");
			Constructor<?> constructors = zzXgCClass.getDeclaredConstructors()[0];
			constructors.setAccessible(true);
			Object instance = constructors.newInstance(null, null);
			// zzZoV = 1
			Field zzXFN = zzXgCClass.getDeclaredField("zzZoV");
			zzXFN.setAccessible(true);
			zzXFN.set(instance, 1);
			// zzW8s = 0
			// zzX6D = "8bfe198c-7f0c-4ef8-8ff0-acc3237bf0d7" // SerialNumber
			// zzw9 SubscriptionExpiry
			// zzZq3 LicenseExpiry
			// zzW5k <Data> ...
			// zzYON 签名 Signature
			// zzXjC zzZoT 对象 空
			Class<?> zzWXGClass = Class.forName("com.aspose.words.zzWXG");
			constructors.setAccessible(true);
			Object zzWXGInstance = constructors.newInstance(null, null);

			Field zzZzA = zzWXGClass.getDeclaredField("zzZzA");
			zzZzA.setAccessible(true);
			ArrayList<Object> zzwPValue = new ArrayList<>();
			zzwPValue.add(instance);
			zzZzA.set(null, zzwPValue);


			// 生成文档会掉这个来判断 zzVSF
			Class<?> zzXQoClass = Class.forName("com.aspose.words.zzVSF");
			Field zzHA = zzXQoClass.getDeclaredField("zzDB");
			zzHA.setAccessible(true);
			zzHA.set(null, 128);
			Field zzWod = zzXQoClass.getDeclaredField("zzXac");
			zzWod.setAccessible(true);
			zzWod.set(null, false);


		} catch (Exception e) {
			e.printStackTrace();
		}


	}