Signature Extractor

This is a simple command-line utility for generating signatures (hashes) of binary files. It processes the file in blocks and writes hash results to an output file.

Features

• Multithreaded hashing with automatic thread count detection.
• Customizable block size (in bytes).
• Input/output file validation.
• Simple interface for CLI usage.

Prerequisites

• MSVC 2017+
• Clang 6.5+
• GCC 8.1+
• Perl (non-direct dependency)
• mbedtls/crypto/ (Should be added to compiler's headers path)

Building

You need a C++ compiler that supports C++17 or newer. Make sure to include the following files in your build:

• main.cpp
• hashlib.h and its implementation
• utils.h and its implementation

Install Gtest library via vcpkg

Windows

cmake -G "Visual Studio 16" -DCMAKE_GENERATOR_PLATFORM=x64 ..

Linux/Mac

cd signature && mkdir build && cd build
cmake -G "Ninja" ..
ninja

Usage

Command

./signature_tool <input_file> <output_hash_file> <block_size>

Example

./signature_tool where_to_produce.bin output_signatures.txt 1234567

Important

Memory usage: 64MB - Buffer size limit.