> ## Documentation Index
> Fetch the complete documentation index at: https://docs.buckspay.xyz/llms.txt
> Use this file to discover all available pages before exploring further.

# Function: decodeCheckAuthSignature()

# Function: decodeCheckAuthSignature()

> **decodeCheckAuthSignature**(`sigBytes`): [`CheckAuthParts`](/sdk-reference/signers/src/passkey/interfaces/CheckAuthParts)

Defined in: [packages/signers/src/passkey/signAuthEntry.ts:92](https://github.com/bucks-pay/buckspay-sdk/blob/43ad599d2776cb5d657043c36847b3318093ccf4/packages/signers/src/passkey/signAuthEntry.ts#L92)

Inverse of formatCheckAuthSignature, for tests + the account adapter assembly check.

## Parameters

### sigBytes

`Uint8Array`

## Returns

[`CheckAuthParts`](/sdk-reference/signers/src/passkey/interfaces/CheckAuthParts)