David Shu-Yu Wu is a Computer Science senior at National Taiwan University focused on cryptographic engineering, post-quantum cryptography, and implementation security. His current research includes a first-author study on second-generation NTT-based large-integer arithmetic on AArch64, OpenSSL RSA integration, formal verification of optimized cryptographic routines, and diffusion-based side-channel trace generation across controlled synthetic traces and four measured AES datasets. He enjoys turning clean mathematical ideas into fast, verifiable code.