Cascade 128 is a cryptographic algorithm designed for secure data encryption. It is part of the NIST Lightweight Cryptography project, aimed at providing efficient and secure solutions for constrained environments, such as Internet of Things (IoT) devices. Cascade 128 uses a combination of substitution and permutation operations to ensure data confidentiality. The algorithm operates on 128-bit blocks and supports variable-length keys, enhancing its flexibility for different applications. Its design focuses on speed and low resource consumption, making it suitable for devices with limited processing power and memory. Cascade 128 is part of ongoing efforts to improve cybersecurity in modern technology.