Pollux cipher encoder and decoder

Invalid keys, unsupported characters, non-digit ciphertext, and Morse groups that are not letters or digits fail with invalid_input instead of guessing. Use it free in the browser for cryptogram practice and Morse-overcipher lessons, or call the API at $0.002 per successful request when pipelines need the same Pollux transform every time.

What the Pollux cipher is and what this tool returns

This endpoint implements that contract in pure, documented form. The JSON response always includes result for the transformed string, encoding fixed to pollux, mode set to encrypt or decrypt, the normalized key, an intermediate morse field showing the . - x stream for teaching and debugging, input_length and output_length, and a formula string that restates the pipeline. There is no streaming path and no silent fallback to plain Morse or another classical cipher: either the payload is valid for the chosen mode, or the request fails with invalid_input.

How text, key, and mode are read and how invalid input fails

The key must be exactly ten characters after trim, drawn only from period, hyphen, and x (asterisk and space are normalized to x for convenience). A key that omits any of the three symbol classes is rejected so you cannot encrypt with a map that has no dash digits, for example. In decrypt mode only digits zero through nine are kept, optional spaces or hyphens between groups are ignored, and any other character fails. After digits map back to Morse symbols, every Morse letter group must be a known ITU code for A–Z or zero through nine; unknown patterns and streams that begin with a gap fail rather than inventing a letter. The preferred payload fields are text for the message or ciphertext, key for the ten-character digit assignment, and optional mode for encrypt or decrypt. Text accepts aliases such as input, value, s, message, plaintext, and ciphertext so forms and SDK clients can reuse existing column names. Key accepts aliases such as digit_key, assignment, digit_map, map, pollux_key, and secret. Mode defaults to encrypt when omitted and also accepts short aliases such as enc, encode, e for encrypt and dec, decode, d for decrypt; any other string fails validation. In encrypt mode only A–Z letters and digits zero through nine are accepted; letter case is ignored; runs of whitespace become word breaks encoded as a double gap; any other character fails immediately with invalid_input. Missing text, empty text, non-string types, and unknown modes likewise raise invalid_input. Pair the free browser run on this page with the priced API when you need the identical mathematical result inside an automated pipeline. Invalid inputs return invalid_input and are not charged, which keeps validation cheap while successful transforms remain a fixed item price at $0.002.

Where Pollux fits in lessons, puzzles, and test fixtures

On this page the work runs entirely in your browser; through the API each successful lookup costs $0.002, failed validation is not charged, and nothing is stored after the response returns. That split—free interactive exploration and a priced, identical API—matches the rest of the KIT tier-A catalog and lets you move from a classroom demo to an automated pipeline without changing the transformed result.