Affine Cipher

Affine cipher is classical and weak; not for security.

Encode Decodea: b:

Affine cipher — free, no upload (FAQs)

FAQs

Valid a values?: a must be coprime with 26, e.g., 1,3,5,7,9,11,15,17,19,21,23,25.

Affine cipher FAQs

FAQs

Valid 'a' values?: 'a' must be coprime with 26 to ensure invertibility.