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# AesGcm Errors

:::info
`AesGcm` is a re-export of ox's [`AesGcm`](https://oxlib.sh/api/AesGcm/errors). Refer to the ox documentation for the full reference.
:::

## `AesGcm.InvalidPrfSizeError`

Thrown when a WebAuthn PRF output is not 32 bytes.