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Progressive Caesar Cipher

Tool to encrypt/decrypt by successive shifts of Caesar cipher. The Progressive Caesar code uses the Caesar number with an incremental shift system.

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Progressive Caesar Cipher -

Tag(s) : Poly-Alphabetic Cipher

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Progressive Caesar Cipher

Progressive Caesar Decoder




Shift type to apply




Change of shift





Progressive Caesar Encoder




Shift type to apply



Change of shift




Answers to Questions (FAQ)

How to encrypt using Progressive Shift cipher?

Progressive Caesar's encryption is a variant of the Caesar cipher. Instead of using the position of the letters in the alphabet and shift by X a letter in position N (so taking the letter in position N+X), the progressive shift consists of taking successively X, X+1, X+2 etc. as a shift sequence.

Example: AAA is encrypted DDD with a Caesar shift of 3

Example: AAA is encrypted DEF with a progressive Caesar offset of 3 (then 4, 5, ...)

See the shift cipher tool for more options on this type of encryption (shift by letters, by words, etc.).

How to decrypt using Shift cipher?

The decryption by Caesar Progressive, requires to know the encryption parameters (progressive or decreasing and the mode of shift change).

Decoding consists of shifting the letters of N in the alphabet for the first letter, then N+1, N+2 and so on, for the following letters.

Source code

dCode retains ownership of the online 'Progressive Caesar Cipher' tool source code. Except explicit open source licence (indicated CC / Creative Commons / free), any 'Progressive Caesar Cipher' algorithm, applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or any 'Progressive Caesar Cipher' function (calculate, convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (Python, Java, PHP, C#, Javascript, Matlab, etc.) and no data download, script, copy-paste, or API access for 'Progressive Caesar Cipher' will be for free, same for offline use on PC, tablet, iPhone or Android ! dCode is free and online.

Need Help ?

Please, check our dCode Discord community for help requests!
NB: for encrypted messages, test our automatic cipher identifier!

Questions / Comments

Thanks to your feedback and relevant comments, dCode has developed the best 'Progressive Caesar Cipher' tool, so feel free to write! Thank you!


Source : https://www.dcode.fr/progressive-caesar-cipher
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