Forum Discussion

Maelstromeous's avatar
Maelstromeous
Occasional Contributor
3 years ago

OTP 7 digits (e.g. cloudflare etc) not compatible with 1Password

Hello, It seems it is currently not possible to create 7 digit OTP passwords. I have tried the following methods to create one for CloudFlare specifically, but unable to do so: Used "Scan QR ...
browser extension
XIII's avatar
XIII
Super Contributor
3 years ago

Correct TOTP codes are 6 digits. Larger codes are not possible to the best of my knowledge.

TOTP is an improvement of HOTP, where more than 6 digits are possible, according to RFC 4226:

Implementations MUST extract a 6-digit code at a minimum and possibly 7 and 8-digit code. Depending on security requirements, Digit = 7 or more SHOULD be considered in order to extract a longer HOTP value.

So maybe for TOTP as well?