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we all know that Caeasar Cipher accepts only alphabets from A-Z and its key is n<=26.
Caesar Cipher does not accept numbers.
last night , I found an exercise which said that this code a certain code is encoded using Caesar Cipher BUT this code is a composed of numbers and alphabets like for example "69bc". This surprised me because as I said :" Caesar Cipher does not accept numbers" but I see a code with numbers and not only alphabets and this code must be decrypted to plain text.

the solution does not interest me . I am very very interested on and my questions are :
**2)how a code, which is composed from numbers and alphabets, is created using Caesar Cipher encoding???
1)how to decrypt a code (which is encoded using Ceasar Cipher and composed not only from alphabets but numbers like for example "69dc" )if we know that Cisaer Cipher does not accept numbers????????
**
any help would be appreciated

Edited by pritaeas: Moved to Computer Science.

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Last Post by ddanbe
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I suspect the code is shown using hexadecimal(base16), which is composed of numbers and the letters A-F. If this is correct, the code, will most likely, have to be broken down into 2 character strings and converted to 8-bit bytes(base10), assuming ASCII encoding and not Unicode.

Edited by tinstaafl

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Look at an ASCII table. What is wrong with extending Ceasar cypher to more than 26 letters of the alfabet? It would make the decyphering a bit harder, I guess.

Edited by ddanbe: addition

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Greetings,

In my opinion, it is just a trick to deceive the others who don't belong to the encryption parts so that some letters have been converted into ASCII code, or written in whose hexadecimal form.

Regards.

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"Look at an ASCII table. What is wrong with extending Ceasar cypher to more than 26 letters of the alfabet? It would make the decyphering a bit harder, I guess."

ok , you are right but explain to me , please, how? with examples and details

how to decrypt extended Caesar Cipher with a key that is for example between( 26-100) and a code with a bunch of weird characters like for example asd456?!!!ÄÖ<<<;.

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Assuming ASCII here.
Instead of modulo 26, use modulo N (the number of chars from 0 to z for example)

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thank you very much , I will try and I will inform you if something get wrong :)

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