RsaCtfTool

RsaCtfTool is a comprehensive RSA attack tool that implements dozens of known attacks against weak RSA public keys to recover private keys and decrypt ciphertext. It supports attacks including Wiener's continued fraction method, Boneh-Durfee, Fermat factorization, Pollard's p-1 and rho algorithms, common modulus attacks, and many more cryptographic weaknesses that appear in CTF challenges and poorly implemented real-world systems. CTF players, cryptography students, and security researchers use RsaCtfTool to rapidly test RSA key pairs against a battery of known attacks, automatically identifying and exploiting weaknesses without requiring deep mathematical expertise. The tool accepts public keys, ciphertext, and various RSA parameters as input and attempts all applicable attacks in sequence, making it an essential utility for anyone working with RSA in competitive or educational security contexts.