US 2014/0195824 A1 · PROTECTING METHOD AND SYSTEM OF JAVA SOURCE CODE

Abstract

The present disclosure discloses a protecting method and system of Java source code. When a first initiating class is invoked, the method comprises following steps, wherein the first initiating class is an initiating class of Java program: the first initiating class decrypts first cipher data to obtain a class loader; the class loader reads second cipher data to the memory and decrypts the second cipher data to obtain a first class, wherein the first class is a class run by a Java virtual machine, and the suffix of the first class is .class; the class loader loads a second initiating class to the memory; wherein the second initiating class is an original class in jar packet of the Java program; and the class loader loads the first class to the Java virtual machine so that the Java virtual machine can invoke a main interface in the second initiating class to run the Java program. The present disclosure can protect Java source code and make it difficult to decompile the Java source code.

Claims12

Dependent claims

A protecting method of Java source code, wherein when a first initiating class is invoked, the method comprises:

S1, the first initiating class reading first cipher data to a memory, decrypting the first cipher data to obtain first plain data, and defining the first plain data as a class loader, wherein the first initiating class is an initiating class of Java program and the first cipher data is data obtained by encrypting the bytecode file of the class loader;
S2, the class loader reading second cipher data to the memory, decrypting the second cipher data to obtain second plain data, and defining the second plain data as a first class, wherein the first class is a class which is run by a Java virtual machine, and the suffix of the first class is .class, and the second cipher data is obtained by encrypting the bytecode file of the first class;
S3, the class loader loading a second initiating class to the memory, wherein the second initiating class is an original class in jar packet of Java program;
and
S4, the class loader loading the first class to the Java virtual machine so that the Java virtual machine can invoke a main interface in the second initiating class and run the Java program.

2 more elements

A protecting system of Java source code, comprising:

a first processing module comprising a first initiating class, wherein the first initiating class is an initiating class of Java program;
an invoking module configured to invoke the first initiating class;
and
a second processing module comprising a class loader;
an encrypting module configured to encrypt a bytecode file of the class loader to first cipher data and encrypt a bytecode file of a first class to second cipher data, wherein the first class is a class run by a Java virtual machine;
and
a decrypting module configured to decrypt the first cipher data to first plain data and decrypt the second cipher data to second plain data,
wherein the first initiating class is configured to read the first cipher data to the memory, and control the decrypting module to decrypt the first cipher data to obtain the first plain data and define the first plain data as the class loader;
and
the class loader configured to load a second initiating class to the memory, read the second cipher data to the memory, control the decrypting module to decrypt the second cipher data and load the first class to the Java virtual machine so that the Java virtual machine can invoke a main interface of the second initiating class to run the Java program, wherein the second initiating class is an original class of jar packet of the Java program.

7 more elements

Dependencies are inferred from the claim text.

Protecting method and system of java source code

Life of this patent

Protecting method and system of java source code

Life of this patent

Abstract

Claims12