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# Secp256k1 Errors

:::info
`Secp256k1` is a re-export of ox's [`Secp256k1`](https://oxlib.sh/api/Secp256k1/errors). Refer to the ox documentation for the full reference.
:::

## `Secp256k1.InvalidPrfSizeError`

Thrown when a WebAuthn PRF output is not 32 bytes.