Guix

This tool is related to the paper entitled Return of the Coppersmith’s Attack: Practical Factorization of Widely Used RSA Moduli. It enables you to test public RSA keys for a presence of the described vulnerability. Currently the tool supports the following key formats: X.509 Certificate (DER encoded, PEM encoded), RSA PEM (encoded private key, public key), SSH public key, ASC-encoded OpenPGP key, APK Android application, LDIFF file, and more.