feat(appcheck): Added replay protection feature to App Check verifyToken() API
#2148
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lahirumaramba
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weixifan
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Apr 12, 2023
| return true; | ||
| }) | ||
| .catch((err) => { | ||
| throw this.toFirebaseError(err); |
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(Just for informational purposes, no action needed.) Right now the backend has two main error conditions (in this order of priority):
- If the token is invalid (expired, invalid signature, wrong audience, etc.), an HTTP 403 Forbidden will be returned.
- If the token had a provider of
safety_net, an HTTP 400 Bad Request will be returned. (Maybe we could even detect this early and avoid the network call?)
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Ah good point! Since we check the validity of the token prior to making the call to BE, 1) should be addressed already. How do we check 2)?, is it a custom claim encoded in the JWT?
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For (2), yes, it is actually a private claim named provider in the JWT, but now that I think about this more, I think a more robust method for detecting whether the token supports Replay Protection is to see whether its jti claim is populated with a nonempty string rather than checking the provider claim against a hardcoded list of allowed providers.
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lahirumaramba
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Apr 14, 2023
lahirumaramba
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Apr 14, 2023
lahirumaramba
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egilmorez
taeold
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Apr 17, 2023
kevinthecheung
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Apr 17, 2023
src/app-check/app-check-api.ts
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| @@ -41,6 +41,27 @@ export interface AppCheckTokenOptions { | |||
| ttlMillis?: number; | |||
| } | |||
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| /** | |||
| * Interface representing options for {@link AppCheck.verifyToken} method. | |||
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Suggested change
| * Interface representing options for {@link AppCheck.verifyToken} method. | |
| * Interface representing options for the {@link AppCheck.verifyToken} method. |
src/app-check/app-check-api.ts
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| * To use the replay protection feature, set this to true to mark the token as consumed. | ||
| * Tokens that are found to be already consumed will be marked as such in the response. |
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| * To use the replay protection feature, set this to true to mark the token as consumed. | |
| * Tokens that are found to be already consumed will be marked as such in the response. | |
| * To use the replay protection feature, set this to true. The {@link AppCheck.verifyToken} | |
| * method will mark the token as consumed after verifying it. | |
| * | |
| * Tokens that are found to be already consumed will be marked as such in the response. |
weixifan
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Apr 19, 2023
lahirumaramba
changed the title
verifyToken() API
lahirumaramba
assigned lahirumaramba and unassigned kevinthecheung, taeold and weixifan
This was referenced Aug 28, 2024
This was referenced Sep 4, 2024
This was referenced Sep 24, 2024
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RELEASE NOTE: Added replay protection feature to App Check
verifyToken()API.