> For the complete documentation index, see [llms.txt](https://the-winrars.gitbook.io/writeups/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://the-winrars.gitbook.io/writeups/2020-writeups/ractf/crypto/mysterious-masquerading-message.md).

# Mysterious Masquerading Message.md

The OpenSSH private key is actually not a private key and is simply just base64.

We decode it to get a long useless message and 2 hex strings.

If we decode these hex strings we get,

`ineedtoopenlocks` and `initialisation12`

Decoding the binary gets us a long hex string.

Looking at initialisation, I immediately thought of AES. Since an IV is provided, we can assume it is AES-CBC, so I just used cyberchef to

decrypt and get the flag.

## Flag: ractf{3Asy\_F1aG\_0n\_aEs\_rAcTf}