Affine cipher (lite)
ClientLinear monoalphabetic substitution.
Affine cipher parameters
Decryption needs a coprime multiplier a mod 26 and shift b. If gcd(a,26)≠1, the cipher is not invertible— the page reports that instead of silent garbage. Processing runs in your browser—Toolcore does not need your paste for the core operation on this page.
Deterministic text transforms; homoglyphs and Unicode normalization may change scores.
How to use
Paste or type in the main field, then read the output below. Use Load example when available, or open the page with ?q= / ?qb= so tickets and agents share the same input.
Nearby workflows on Toolcore
- Caesar decode with shift — Decode Caesar cipher with numeric shift. Useful for the next text cleanup or cipher step.
- Atbash cipher (lite) — Reverse alphabet substitution A↔Z. Useful for the next text cleanup or cipher step.
- Word & character count — Words, characters, lines, and reading time—paste any text, all client-side. Useful for the next text cleanup or cipher step.
- Wrap text — Hard-wrap paragraphs at a fixed column width for READMEs, commits, or terminal paste. Useful for the next text cleanup or cipher step.
Common use cases
- Affine cipher (lite) for quick local checks without uploading data.
- Copy results into tickets, docs, or classroom notes.
Common mistakes to avoid
Unexpected input shape
See the intro and how-to notes for accepted formats.
FAQ
Is processing local?
Yes—this runs entirely in your browser.
Agent prefill?
Use q or qb for the main text field when supported.
More tools
Related utilities you can open in another tab—mostly client-side.
Caesar decode with shift
ClientDecode Caesar cipher with numeric shift.
Atbash cipher (lite)
ClientReverse alphabet substitution A↔Z.
Word & character count
ClientWords, characters, lines, and reading time—paste any text, all client-side.
Wrap text
ClientHard-wrap paragraphs at a fixed column width for READMEs, commits, or terminal paste.