Tags: crypto cipher
Rating: 5.0
# lorem ipsum
#### Category : CRYPTO
#### Points : 150 (135 solves)
#### Author : raydan
## Challenge
Flag is case sensitive.
author: raydan
Attachments :
+ cipher.txt
+ hint.jpg
## Solution
Putting the given cipher text in [cipher identifier](https://www.dcode.fr/cipher-identifier), we get that the name of the cipher is `Trithemius Ave Maria`.
When we try to decrypt it, it gives us :
`RSTHISISTRITHEMIUS`
But this is not the final flag as the challenge says, it is case sensitive.
Changing the case sensitivity as per the given `cipher.txt`(If the case of the starting alphabet of the word is uppercase, we change the decypted alphabet to upper case as well).
By this change and and wrapping it with {}, we get:
`RS{ThIsIsTrItHeMiUs}`
[Original Writeup](https://github.com/p1xxxel/ctf-writeups/tree/main/2021/RITSEC/lorem%20ipsum)
(https://github.com/p1xxxel/ctf-writeups/tree/main/2021/RITSEC/lorem%20ipsum)