Spring Whether you can extend ASM ClassReader

I encrypted the jar. During the spring startup process, I will scan the class in the jar and read it through ClassReader. Finally, I found that there are two places that support obtaining the class from the jar, but the class at this time has not been decrypted, and will support error reporting

org.springframework.core.type.classreading.SimpleMetadataReader#getClassReader

    private static ClassReader getClassReader(Resource resource) throws IOException {
        try (InputStream is = resource.getInputStream()) {
            try {
                return new ClassReader(is);
            }
            catch (IllegalArgumentException ex) {
                throw new ClassFormatException("ASM ClassReader failed to parse class file - " +
                        "probably due to a new Java class file version that is not supported yet. " +
                        "Consider compiling with a lower '-target' or upgrade your framework version. " +
                        "Affected class: " + resource, ex);
            }
        }
    }

org.springframework.asm.ClassReader.ClassReader(byte[],int,boolean)
org.springframework.cglib.core.AbstractClassGenerator.generate(ClassLoaderData)

How do I decrypt bytecode in a custom way before getClassReader?