■ Key Generation > Argon2id • Protects the master password and generates a secure, anti-brute-force key. ■ Encryption > AES-256-GCMHMAC-SHA-256 • It makes the message unreadable and guarantees its absolute integrity. ■ Image Analysis > Synch-HILL • Find the best spots in the image to hide data without being detected. ■ Optimization > STC+Viterbi • Reduces the number of pixels to be modified to a mathematical minimum.