Caesar cipher help

[Oliver123456]

So I have this cipher which I know what it translates into, but I can't find out how. I also know that the shift changes every letter. Can anyone help?

 

Cipher text: 

83X25

Plaintext:

Price

And the conversion tables: (attached)

 

EDIT: I know of another one, cipher text:

JX3X3

Plaintext:

NOV87

Thanks!

 

[The1Dickens]

This doesn't look like a Caesar Cipher, or at least not the only cipher. A Caesar Cipher simply shifts the letters, so A=B, B=C.. Z=A (it can be shifted by any amount, so A=M, B=N.. Z=L). This means that for every 'B' in the cipher, it will actually be an 'A'; or DBU = CAT. The examples you gave do not follow that convention.

 

If 83X25 = PRICE, then that means 'X' = 'I', however in the next example, JX3X3, 'X' has 2 different values, 'O' and '8', neither of which matches the first cipher's solution of 'I'. Using the solution of the first cipher, JX3X3 would translate to ?IRIR. Further, the "solution" tables don't have any value, since the information is in blocks of 5 alphanumeric symbols, but those tables translate it all to numerical values. If X translates to 34, what are you supposed to do with that 34? Or do you take the numbers and translate to letters, which means in 83X25, do you translate 25 to 2 and 5 (1 and 4) or 25 (O).

 

So, this isn't a Caesar Cipher, at least not as the sole encryption method.

[The1Dickens]

15 minutes ago, Arika S said:

You definitely need to get more information from who ever posted this 

Yeah, I spent about a week looking into the other thread's stuff, and after the information proved to be incomplete and never heard back any information on that one, I gave up. Shame, too, because these are very fun for me, if I have all the information.

[Oliver123456]

2 hours ago, Arika S said:

as @The1Dickens said, this is not a Caesar Shift.

 

the main point of the Caesar Shift is that the shift is constant across all letters/number, it cannot change between positions.

 

doing the shift for the two examples you have provided gives the following number of shifts for each position

 

15
24
21
10
9

14
27
28
11
4

 

there doesn't appear to be any consistency.

 

Where did you get this cipher from? this is the second thread that people have asked for help that contained JX3X3?

 

it's even the same table you have linked.

 

it's also not a Vigenere Cipher since both the examples have different keys

 

the key for 83X25 is JCFQR to get Price

and the key for JX3X3 to get NOV87 is either

1. W98P
2. W98PW
3. W98PW0

 

You definitely need to get more information from who ever posted this 

I got it from a discord server and unfortunately that is all they have given me. There is another one that has been posted which is much longer, but i still haven't figured out this one.