hotp (npm): HMAC-Based One-Time Password (HOTP), and Time-Based One-Time Password (TOTP) Algorithms
Keywords: hotp|totp|otp|rfc4226|rfc 4226|4226|rfc6238|rfc 6238|6238|one-time password|two-factor authentication|two-factor|2fa|authentication|authenticator|hmac|hmac-based|time-based|one-time-password|two-factor-authentication