# Crypto

- [home rolled](/writeups/2020-writeups/tjctf/crypto/home-rolled.md)
- [rgbsa](/writeups/2020-writeups/tjctf/crypto/rgbsa.md)
- [difficult decryption](/writeups/2020-writeups/tjctf/crypto/difficult-decryption.md)
- [Reasonably Secure Algorithm](/writeups/2020-writeups/tjctf/crypto/reasonably-secure-algorithm.md)
- [Is this Crypto](/writeups/2020-writeups/tjctf/crypto/is-this-crypto.md)
- [Titanic](/writeups/2020-writeups/tjctf/crypto/titanic.md)