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Implement toJSON() for createPublicKeyCredential (#2734)

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Implement toJSON() for cratePublicKeyCredential
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Sami Vänttinen 2025-10-26 16:02:30 +02:00 committed by GitHub
parent 20f1a99356
commit 7e0eba463b
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1 changed files with 47 additions and 1 deletions
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48
keepassxc-browser/content/passkeys.js
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@ -26,6 +26,51 @@
return kpxcStringToArrayBuffer(window.atob(str?.replaceAll('-', '+').replaceAll('_', '/')));
};
// From ArrayBuffer to URL encoded base64 string
const kpxcArrayBufferToBase64 = function(buf) {
const str = [ ...new Uint8Array(buf) ].map(c => String.fromCharCode(c)).join('');
return window.btoa(str).replaceAll('+', '-').replaceAll('/', '_').replaceAll('=', '');
};
// Returns the PublicKeyCredential as JSON
// See: https://w3c.github.io/webauthn/#dom-publickeycredential-tojson
const kpxcPublicKeyCredentialJson = function (credential, publicKey) {
const clientExtensionResults = credential.getClientExtensionResults();
const type = credential.type;
const authenticatorAttachment = credential.authenticatorAttachment;
let response;
if (credential.response instanceof AuthenticatorAttestationResponse) {
const responsePublicKey = credential.response.getPublicKey();
response = {
clientDataJSON: publicKey.response.clientDataJSON,
authenticatorData: publicKey.response.authenticatorData,
transports: credential.response.getTransports(),
publicKey: responsePublicKey ? kpxcArrayBufferToBase64(responsePublicKey) : null,
publicKeyAlgorithm: credential.response.getPublicKeyAlgorithm(),
attestationObject: publicKey.response.attestationObject,
};
}
if (credential.response instanceof AuthenticatorAssertionResponse) {
response = {
clientDataJSON: publicKey.response.clientDataJSON,
authenticatorData: publicKey.response.authenticatorData,
signature: publicKey.response.signature,
userHandle: publicKey.response?.userHandle || undefined,
};
}
return {
id: publicKey.id,
rawId: publicKey.id,
response,
authenticatorAttachment,
clientExtensionResults,
type,
};
};
// Wraps response to AuthenticatorAttestationResponse object
const createAttestationResponse = function(publicKey) {
const response = {
@ -63,7 +108,8 @@
response: authenticatorResponse,
type: publicKey.type,
clientExtensionResults: () => publicKey?.response?.clientExtensionResults || {},
getClientExtensionResults: () => publicKey?.response?.clientExtensionResults || {}
getClientExtensionResults: () => publicKey?.response?.clientExtensionResults || {},
toJSON: () => kpxcPublicKeyCredentialJson(publicKeyCredential, publicKey)
};
return Object.setPrototypeOf(publicKeyCredential, PublicKeyCredential.prototype);