crypto - Cryptography library for Racket Installation The crypto package is available through Racket's package manager (https://pkgs.racket-lang.org/). Install via command line with raco pkg install crypto Or install via DrRacket (File > Package Manager). Documentation Read the documentation online here: crypto: https://docs.racket-lang.org/crypto/index.html x509: https://docs.racket-lang.org/x509/index.html