caesar
- Description: Decrypt this message.
- Difficulty: Medium
🔎 Solution
In this challenge, we are given a ciphertext string.
picoCTF{gvswwmrkxlivyfmgsrhnrisegl}
Based on the challenge name, it suggests the use of a Caesar cipher. The Caesar cipher is 1 of the simplest and most well-known encryption techniques. It is a substitution cipher where each letter in the plaintext is shifted by a fixed number of positions in the alphabet.
Using a Caesar cipher decoder, we test different shifts and discover that applying a right shift of 4 successfully reveals the plaintext:
crossingtherubicondjneoach
This provides us with the solution and the hidden flag.
🚩Flag
picoCTF{crossingtherubicondjneoach}