What is the expiry time of refresh token? Can I get new token if used with refresh token. If yes Is there any time limit for refresh token .
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Firebase Authentication uses two tokens:
- a long-lived/permanent refresh token that identifies the user.
- a short-lived ID token that grants the user access to backend services.
The refresh token doesn't expire.
The ID token by default expires hourly. If you mint a custom token you can set a custom expiration, which can never be longer than an hour.
Frank van Puffelen
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So can we use this refresh token to authenticate a user,if his authentication is lost after an hour – Maria Joseph Jul 20 '17 at 08:45
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No. All of this sounds like an [XY problem](http://meta.stackexchange.com/questions/66377/what-is-the-xy-problem) btw. What are you trying to accomplish here? – Frank van Puffelen Jul 20 '17 at 13:22