NAME

       rotp - Ruby library for generating and verifying one time passwords

SYNOPSIS

       rotp [options]

DESCRIPTION

       A Ruby library for generating and verifying one time passwords. It works for both HOTP and
       TOTP, and includes QR Code provisioning

OPTIONS

       -s, --secret [SECRET]
              The shared secret

       -c, --counter [COUNTER]
              The counter for counter-based hmac OTP

       -t, --time
              Use time-based OTP according to RFC 6238 (default)

       -m, --hmac
              Use counter-based OTP according to RFC 4226

       -h, --help
              Show help

Examples

       rotp --secret p4ssword                       # Generates a time-based one-time password

       rotp --hmac --secret p4ssword --counter 42   # Generates a counter-based one-time password

SEE ALSO

       /usr/share/doc/ruby-rotp/index.html

                                             May 2015                                     rotp(1)