A Post-Quantum Key Agreement Protocol Based on a Modified Matrix-Power Function over a Rectangular Integer Matrices SemiringPost-Quantum Key Agreement Protocol • April 2nd, 2024
Contract Type FiledApril 2nd, 2024Abstract: We present an improved post-quantum version of Sakalauskas matrix power function key agreement protocol, using rectangular matrices instead of the original square ones. Sakalauskas matrix power function is an efficient and secure way to generate a shared secret key, and using rectangular matrices provides additional flexibility and security. This method reduces the computational complexity by allowing smaller random integer matrices while maintaining a high level of security. We don’t rely on matrices with special formatting to achieve commutativity; instead, we use full random values on those structures, increasing their entropy. Another advantage of using rectangular matrices over key agreement protocols is that they offer better protection against various linearization attacks.