otp: One Time Password Generation and Verification

Generating and validating One-time Password based on Hash-based Message Authentication Code (HOTP) and Time Based One-time Password (TOTP) according to RFC 4226 https://datatracker.ietf.org/doc/html/rfc4226 and RFC 6238 https://datatracker.ietf.org/doc/html/rfc6238.

See also

Useful links:

• https://github.com/randy3k/otp

• Report bugs at https://github.com/randy3k/otp/issues

Author

Maintainer: Randy Lai randy.cs.lai@gmail.com [copyright holder]