M&M: Secure Two-Party Machine Learning Through Modulus Conversion and Mixed-Mode Protocols

M&M is a framework that improves secure two-party machine learning (where two parties compute on data without revealing it to each other) by using an efficient modulus conversion protocol (a technique that converts numbers between different mathematical domains used by different encryption methods). The framework integrates various cryptographic tools more efficiently, achieving 6–100 times faster approximated truncations (rounding operations) and 4–5 times faster communication and runtime for machine learning tasks.