SHA-256 Digest: Cryptographic one-way compression function executing 64 iterative rounds of modular bit-mixing.
T1 = h + Σ1(e) + Ch(e,f,g) + K_t + W_t
T2 = Σ0(a) + Maj(a,b,c)
Ciphers: Polyalphabetic Vigenère $C_i = (P_i + K_i) \pmod{26}$ and modular Caesar ROT shifts.
Matrix Engine: Independent vertical phosphor drop channels with leading luminescent heads and decaying alpha trails.