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import type {
PublicKeyCredentialRequestOptionsJSON,
} from '@simplewebauthn/typescript-types';
type Options = {
challenge: string,
allowedBase64CredentialIDs: string[],
suggestedTransports?: AuthenticatorTransport[],
timeout?: number,
userVerification?: UserVerificationRequirement,
extensions?: AuthenticationExtensionsClientInputs,
};
/**
* Prepare a value to pass into navigator.credentials.get(...) for authenticator "login"
*
* @param challenge Random string the authenticator needs to sign and pass back
* @param allowedBase64CredentialIDs Array of base64-encoded authenticator IDs registered by the
* user for assertion
* @param timeout How long (in ms) the user can take to complete assertion
* @param suggestedTransports Suggested types of authenticators for assertion
* @param userVerification Set to `'discouraged'` when asserting as part of a 2FA flow, otherwise
* set to `'preferred'` or `'required'` as desired.
* @param extensions Additional plugins the authenticator or browser should use during assertion
*/
export default function generateAssertionOptions(
options: Options,
): PublicKeyCredentialRequestOptionsJSON {
const {
challenge,
allowedBase64CredentialIDs,
suggestedTransports = ['usb', 'ble', 'nfc', 'internal'],
timeout = 60000,
userVerification,
extensions,
} = options;
return {
challenge,
allowCredentials: allowedBase64CredentialIDs.map(id => ({
id,
type: 'public-key',
transports: suggestedTransports,
})),
timeout,
userVerification,
extensions,
};
}
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