Android using Fido2 SDK encountering [50162] issue

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L S

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Oct 12, 2025, 1:47:49 PMOct 12
to FIDO Dev (fido-dev)
Device : Redmi:miro

Android: 15

When running fido2 authentication,

Actual:

- sdk return exception:  [50162] Can't find the proper key to decrypt the private key from WebauthnCredentialSpecifics.

Expected:

- Authenticate successfully

My1

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Oct 12, 2025, 4:35:39 PMOct 12
to L S, FIDO Dev (fido-dev)
do you have some more details?

like

1) what are you trying to do? Use an app as passkey source, log into your app using a passkey from somewhere else.

2) is it from an app you are making (as it is an SDK-related error) or just something with already existing apps?

3) are browsers involved, if yes, which ones?

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L S

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Oct 13, 2025, 9:26:05 PMOct 13
to FIDO Dev (fido-dev), My1, FIDO Dev (fido-dev), L S
I have integrated my android app with FIDO2 sdk few years ago

1. I have integrated the FIDO2 registration that works fine as expected. However, some users encounter this error during fido2 authentication.

2. yes this error is returned from FIDO2 SDK and i have tried the latest version of FIDO2: com.google.android.gms:play-services-fido:21.2.0

- This error shows up just from half year ago and i havnt update the authentication code since last year

3. nothing related to browsers, pure android app


Kenneth Bester

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Oct 14, 2025, 4:25:13 AMOct 14
to L S, FIDO Dev (fido-dev), My1
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