Tag: s-box

In a previous post, I introduced the SEA S-Box – an 8×8 substitution box constructed via Fractional Linear and Affine Transformations (FLAT) that matched or exceeded AES on nearly every cryptographic metric. The SEA S-Box was discovered through random seed […]

Introducing the SEA S-Box: A High-Quality Substitution Box via Fractional Linear and Affine Transformations In symmetric cryptography, the substitution box (S-box) is the primary source of nonlinear confusion in block ciphers. The security of ciphers like AES depends critically on […]