so I tried to send all the attestation object using this code:
import SwiftCBOR
class CredentialProviderViewController: ASCredentialProviderViewController {
...
...
...
func hashRP(_ rp: String) -> [UInt8] {
let hashed = SHA256.hash(data: Data(rp.data(using: .utf8) ?? Data([])))
return Array(hashed)
}
fileprivate func generateCosePublickKey() -> [UInt8] {
let privateKey = P256.Signing.PrivateKey()
let publicKey = privateKey.publicKey.x963Representation
let decodedPublicKey: [Int:CBOR] = [
1: 2,
3: -7,
-1: 1,
-2: CBOR.byteString(publicKey[1..<33].map { $0 }),
-3: CBOR.byteString(publicKey[33..<65].map { $0 })
]
return CBOR.encode(decodedPublicKey)
}
func generateAttestedObject(_ rp: String) -> Data {
var att: [Int:CBOR] = [:]
let hashedRpId: [UInt8] = hashRP(rp)
let flagsAndSignedCount: [UInt8] = [93, 0, 0, 0, 0]
let idLength: [UInt8] = [0, 16]
let cosePublicKey: [UInt8] = generateCosePublickKey()
let attestedCredentialData = hashedRpId + flagsAndSignedCount + exampleAAGUID + idLength + hashedRpId[0..<16] + cosePublicKey
att[1] = "none"
att[2] = CBOR.byteString(attestedCredentialData)
att[3] = CBOR.map([:])
let encoded = CBOR.encode(att)
return Data(encoded)
}
@IBAction func onRegister(_ sender: UIButton) {
guard let request = newRegistrationRequest as? ASPasskeyCredentialRequest else {return}
let attObj: Data = Data(generateAttestedObject(request.credentialIdentity.serviceIdentifier.identifier))
let passkey: ASPasskeyRegistrationCredential = ASPasskeyRegistrationCredential(
relyingParty: request.credentialIdentity.serviceIdentifier.identifier,
clientDataHash: request.clientDataHash,
credentialID: Data(hashRP(request.credentialIdentity.serviceIdentifier.identifier)[0..<16]),
attestationObject: Data(attObj)
)
extensionContext.completeRegistrationRequest(using: passkey){ endedWell in
NSLog("onRegister called \(endedWell ? "" : "not") ended well")
}
}
}
but i still get errors on the client side.
can someone please help me?
