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Interstellar Chat

This is a challenge from Cryptography section of Standcon 2021. The challenge uses AES_CTR to encrypt stuff

Mind Reader

This is a challenge from Cryptography section of Standcon 2021. The challenge wants us to break the PRNG system.

Rocket Ship Academy

This is a challenge from Cryptography section of Standcon 2021. The challenge provide you an encrypted text and a decryption oracle.

Substitution Extreme

This is a challenge from Cryptography section of Standcon 2021. The challenge used subsitution cipher to encrypt a text.

Space Papaya

This is a challenge from Cryptography section of Standcon 2021. The challenge used bad parameters for RSA encryption