Porta cipher
ClientPorta self-reciprocal polyalphabetic cipher with keyword.
ATTACK
Nearby workflows on Toolcore
- Gronsfeld cipher — Numeric-key Vigenère variant—digits 0–9 as shifts. for the next text or markup step in your edit loop.
- Vigenère cipher — Encrypt or decrypt A–Z with a repeating keyword—classic polyalphabetic cipher locally. for the next text or markup step in your edit loop.
- Beaufort cipher — Beaufort substitution cipher with repeating keyword. for the next text or markup step in your edit loop.
- ROT13 & Caesar cipher — Rotate Latin letters A–Z and a–z: ROT13 (self-inverse) or Caesar shift 0–25—other characters unchanged, local only. for the next text or markup step in your edit loop.
About this tool
Classic Porta tableau—same op encodes and decodes.
Common use cases
- Porta cipher 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.
Gronsfeld cipher
ClientNumeric-key Vigenère variant—digits 0–9 as shifts.
Vigenère cipher
ClientEncrypt or decrypt A–Z with a repeating keyword—classic polyalphabetic cipher locally.
Beaufort cipher
ClientBeaufort substitution cipher with repeating keyword.
ROT13 & Caesar cipher
ClientRotate Latin letters A–Z and a–z: ROT13 (self-inverse) or Caesar shift 0–25—other characters unchanged, local only.