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Function: extractCoseKey()

extractCoseKey(authData): object

Defined in: packages/signers/src/passkey/cose.ts:106 Extract the secp256r1 (P-256) x/y from a WebAuthn attestation’s authenticatorData: rpIdHash(32) | flags(1) | signCount(4) | aaguid(16) | credIdLen(2) | credId | COSE_Key(CBOR) Requires the AT (attested-credential-data) flag set.

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Parameters

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authData

Uint8Array

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Returns

object

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x

x: Uint8Array

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y

y: Uint8Array