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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




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

Answers to Questions

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.

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 algorithm, applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or any function (convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (PHP, Java, C#, Python, Javascript, Matlab, etc.) no data, script or API access will be for free, same for Progressive Caesar Cipher download for offline use on PC, tablet, iPhone or Android !

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Thanks to your feedback and relevant comments, dCode has developped 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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