Crypto: Caesar Shift
- Category: Cryptography
- Difficulty: Easy
- Goal: Decrypt the given ciphertext and retrieve the flag.
Scenario
You intercepted a message that appears to be encoded with a simple substitution: a Caesar shift.
GUR SYNAT VF: synt{frperg_cevpr_bs_zngevk}
Task
- Identify the shift and decode the message.
- Submit the flag in the form
flag{...}.
Hints
- Caesar shift is a rotation over the alphabet. ROT13 is a popular variant.
- Try online decoders or write a quick script.
Expected approach
- Recognize it is ROT13.
- Decoding yields:
THE FLAG IS: flag{secret_price_of_matrix}.
Solution (expand to view)
Show solution
Using ROT13 on the ciphertext:
GUR SYNAT VF: synt{frperg_cevpr_bs_zngevk} -> THE FLAG IS: flag{secret_price_of_matrix}