Used to derive the encryption key via PBKDF2. The same passphrase is required for decryption.
Output Format
Shift
Number of positions to shift each letter. A shift of 13 is equivalent to ROT13.
Keyword
Alphabetic keyword used to determine the shift or arrangement for each letter.
Numeric Key
Sequence of digits used as shift values. Each digit shifts the corresponding letter by that amount.
Multiplier (a)
Must be coprime to 26. Determines the multiplicative component of the cipher.
Shift (b)
Added after multiplication. Determines the additive component of the cipher.
Rails
Number of rows in the zigzag pattern. More rails produce more scrambled output.
Separator
Character used between number values in the encoded output.
Columns
Number of columns (equivalent to the rod diameter). Text is written in rows and read by columns.
This cipher has no configurable options.
HTTPS Required
AES encryption requires a secure context (HTTPS). Modern ciphers are unavailable over plain HTTP.