Oauth2 token size

[Kenneth Feldt]

We are deciding where to keep the OAuth2 access tokens --- but apparently there is no size specification for access tokens; dialog on Facebook groups hint that tokens may exceed 255 characters for their applications.
a) Am I correct in assuming that canvas/LMS does not define a max size for access tokens
b) How about 'refresh tokens' - is there a defined field length for refresh tokens?

[Cody Cutrer]

Kenneth,

Canvas access and refresh tokens have a random component, and a deterministic component (the latter specific to Canvas Cloud). The random component will always be 64 characters. The deterministic component is always at least two characters, and is an incrementing integer (current maximum in the system is 6 characters). I'd say just give yourself 255 characters and call it good.

Cody Cutrer

Software Engineer

Instructure

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[Kenneth Feldt]

Thank you!