libsphinx | Sphinx-based Password Storage low-level library | Identity Management library

libsphinx is a C library typically used in Security, Identity Management applications. libsphinx has no bugs, it has no vulnerabilities, it has a Strong Copyleft License and it has low support. You can download it from GitHub.

It allows you to have only a few (at least one) passwords that you need to remember, while at the same time provides unique 40 (ASCII) character long very random passwords (256 bit entropy). Your master password is encrypted (blinded) and sent to the password storage server which (without decrypting) combines your encrypted password with a big random number and sends this (still encrypted) back to you, where you can decrypt it (it's a kind of end-to-end encryption of passwords) and use the resulting unique, strong and very random password to register/login to various services. The resulting strong passwords make offline password cracking attempts infeasible. If say you use this with google and their password database is leaked your password will still be safe. How is this different from my password storage which stores the passwords in an encrypted database? Most importantly using an encrypted database is not "end-to-end" encrypted. Your master password is used to decrypt the database read out the password and send it back to you. This means whoever has your database can try to crack your master password on it, or can capture your master password while you type or send it over the network. Then all your passwords are compromised. If some attacker compromises your traditional password store it's mostly game over for you. Using sphinx the attacker controlling your password store learns nothing about your master nor your individual passwords. Also even if your strong password leaks, it's unique and cannot be used to login to other sites or services.