Bud32KEOPS

Bud32KEOPS is a lightweight, open-source cryptographic library designed for embedded systems and resource-constrained environments. It is primarily focused on providing efficient implementations of cryptographic primitives, particularly those based on the KEOPS (Keyed-Obfuscated Permutation Stream) framework. KEOPS is a family of lightweight block ciphers and stream ciphers that offer strong security while maintaining minimal computational and memory overhead, making them suitable for devices with limited processing power.

The library supports a variety of KEOPS-based algorithms, including KEOPS-80, KEOPS-128, and KEOPS-192, which differ in key sizes and security levels. These ciphers are designed to be highly efficient in terms of both code size and execution speed, often outperforming traditional block ciphers like AES in constrained environments. Bud32KEOPS is implemented in C and is compatible with 32-bit architectures, including ARM Cortex-M microcontrollers, which are commonly used in IoT and embedded applications.

One of the key features of Bud32KEOPS is its modular design, allowing developers to integrate only the cryptographic functions they require. The library also includes support for authentication modes, such as authenticated encryption with associated data (AEAD), which enhances security by combining encryption with integrity checks. This makes it suitable for applications requiring both confidentiality and data authenticity, such as secure communication protocols or encrypted storage.

Bud32KEOPS is released under an open-source license, typically the MIT License, which permits free use, modification, and distribution. The project is maintained by a community of developers and researchers focused on lightweight cryptography, ensuring ongoing improvements and security updates. Due to its efficiency and flexibility, Bud32KEOPS is often recommended for developers working on security-critical embedded systems where traditional cryptographic libraries may be too resource-intensive.