const_value.hHeader

Provides the const_value template class for securely storing immutable values with structural randomization. More...

Detailed Description

This header file is part of the AntiSpy library and introduces the const_value template class, which is designed to securely store constant values of any type in a way that protects them from common attack vectors, such as memory inspection, tampering, or reverse engineering. The class ensures that the value remains immutable once it is set, and employs structural randomization to make it more difficult for attackers to predict or access the value in memory.

The const_value class is a critical component for scenarios where sensitive data, such as encryption keys, configuration constants, or other critical values, need to be stored in a way that minimizes the risk of unauthorized access or modification.

Key Features:

  • Immutable Storage : The const_value class ensures that the stored value is immutable once it has been set, providing a reliable way to store constants that should not be changed throughout the application's lifecycle.

  • Structural Randomization : To enhance security, the layout of the const_value object is randomized in memory. This obfuscates the location of the stored value, making it significantly harder for attackers to locate or tamper with the value through memory inspection techniques.

  • Type Flexibility : The class template can be used with any data type, making it versatile for a wide range of applications, from primitive types like integers and floats to more complex custom types.

  • Implicit Conversion : The class provides an implicit conversion operator to the underlying type T , allowing seamless integration into existing codebases where the value needs to be used directly in expressions or passed to functions expecting the original type.

Intended Usage:

The const_value class is intended for use in security-sensitive applications where the protection of constant data is crucial. It is particularly useful for storing cryptographic keys, configuration values, and other constants that must remain secure and unmodified. By using const_value , developers can add an additional layer of protection against attacks aimed at extracting or altering critical data.

Example Usage:

#include <antispy/libantispy.h>

int main() {
   // Securely store an integer value
   libantispy::const_value<int> secureInt{42};

   // Use the stored value in a computation
   int result = secureInt + 10;
}

This example shows how to create a const_value object and use it in computations as if it were a regular integer. The value is securely stored and protected against tampering.

Note:

While the const_value class adds security through structural randomization, it is important to consider the potential performance implications of this added security. Developers should weigh the security benefits against any performance costs, especially in performance-critical sections of the code.