Speck

Speck is a ternary stream cipher developed by the U.S. National Security Agency, designed for fast and secure encryption of digital data. It combines simple operations—like modular addition, bitwise rotation, and XOR—to transform plaintext into ciphertext, making it resistant to various attacks. Speck is optimized for efficiency on lightweight devices, such as IoT gadgets and embedded systems, by requiring minimal computational resources while maintaining strong security. Its design allows for flexibility across different hardware and data sizes, making it suitable for protecting sensitive information in resource-constrained environments.