Quelle test_webauthn_loopback.html Sprache: HTML

products/Sources/formale Sprachen/C/Firefox/dom/webauthn/tests/test_webauthn_loopback.html

<!DOCTYPE html>
<meta charset=utf-8>
<head>
  <title>Full-run test for MakeCredential/GetAssertion for W3C Web Authentication</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <script type="text/javascript" src="u2futil.js"></script>
  <script type="text/javascript" src="pkijs/common.js"></script>
  <script type="text/javascript" src="pkijs/asn1.js"></script>
  <script type="text/javascript" src="pkijs/x509_schema.js"></script>
  <script type="text/javascript" src="pkijs/x509_simpl.js"></script>
  <script type="text/javascript" src="cbor.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>

<h1>Full-run test for MakeCredential/GetAssertion for W3C Web Authentication</h1>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1309284">Mozilla Bug 1309284</a>

<script class="testbody" type="text/javascript">
"use strict";

add_task(async function() {
  // This test intentionally compares items to themselves.
  /* eslint-disable no-self-compare */
  await SpecialPowers.pushPrefEnv({"set": [["security.webauth.webauthn_testing_allow_direct_attestation", true]]});
  await addVirtualAuthenticator();
  is(navigator.authentication, undefined, "navigator.authentication does not exist any longer");
  isnot(navigator.credentials, undefined, "Credential Management API endpoint must exist");
  isnot(navigator.credentials.create, undefined, "CredentialManagement create API endpoint must exist");
  isnot(navigator.credentials.get, undefined, "CredentialManagement get API endpoint must exist");

  let credm = navigator.credentials;

  let gCredentialChallenge = new Uint8Array(16);
  window.crypto.getRandomValues(gCredentialChallenge);
  let gAssertionChallenge = new Uint8Array(16);
  window.crypto.getRandomValues(gAssertionChallenge);

  await testMakeCredential();

  async function decodeCreatedCredential(aCredInfo) {
    /* PublicKeyCredential : Credential
       - rawId: Key Handle buffer pulled from U2F Register() Response
       - id: Key Handle buffer in base64url form, should == rawId
       - type: Literal 'public-key'
       - response : AuthenticatorAttestationResponse : AuthenticatorResponse
         - attestationObject: CBOR object
         - clientDataJSON: serialized JSON
    */

    is(aCredInfo.type, "public-key", "Credential type must be public-key")

    ok(aCredInfo.rawId.byteLength > 0, "Key ID exists");
    is(aCredInfo.id, bytesToBase64UrlSafe(aCredInfo.rawId), "Encoded Key ID and Raw Key ID match");

    ok(aCredInfo.rawId === aCredInfo.rawId, "PublicKeyCredential.RawID is SameObject");
    ok(aCredInfo.response === aCredInfo.response, "PublicKeyCredential.Response is SameObject");
    ok(aCredInfo.response.clientDataJSON === aCredInfo.response.clientDataJSON, "PublicKeyCredential.Response.ClientDataJSON is SameObject");
    ok(aCredInfo.response.attestationObject === aCredInfo.response.attestationObject, "PublicKeyCredential.Response.AttestationObject is SameObject");

    let clientDataJSON = buffer2string(aCredInfo.response.clientDataJSON);
    let clientData = JSON.parse(clientDataJSON);
    let challengeB64 = bytesToBase64UrlSafe(gCredentialChallenge);
    let expectedClientDataJSON = '{"type":"webauthn.create","challenge":"'+challengeB64+'","origin":"'+window.location.origin+'"}';
    is(clientData.challenge, challengeB64, "Challenge is correct");
    is(clientData.origin, window.location.origin, "Origin is correct");
    is(clientData.type, "webauthn.create", "Type is correct");
    is(clientDataJSON, expectedClientDataJSON, "clientData is in the correct order for limited verification");

    let attestationObj = await webAuthnDecodeCBORAttestation(aCredInfo.response.attestationObject);
    // Make sure the RP ID hash matches what we calculate.
    let calculatedRpIdHash = await crypto.subtle.digest("SHA-256", string2buffer(document.domain));
    let calcHashStr = bytesToBase64UrlSafe(new Uint8Array(calculatedRpIdHash));
    let providedHashStr = bytesToBase64UrlSafe(new Uint8Array(attestationObj.authDataObj.rpIdHash));
    is(calcHashStr, providedHashStr, "Calculated RP ID hash must match what the browser derived.");
    ok(true, attestationObj.authDataObj.flags[0] & (flag_TUP | flag_AT));
    ok(attestationObj.authDataObj.flags[0] & (flag_TUP | flag_AT) == (flag_TUP | flag_AT),
       "User presence and Attestation Object flags must be set");
    aCredInfo.clientDataObj = clientData;
    aCredInfo.publicKeyHandle = attestationObj.authDataObj.publicKeyHandle;
    aCredInfo.attestationObject = attestationObj.authDataObj.attestationAuthData;
    return aCredInfo;
  }

  async function checkAssertionAndSigValid(aPublicKey, aAssertion) {
    /* PublicKeyCredential : Credential
       - rawId: ID of Credential from AllowList that succeeded
       - id: Key Handle buffer in base64url form, should == rawId
       - type: Literal 'public-key'
       - response : AuthenticatorAssertionResponse : AuthenticatorResponse
         - clientDataJSON: serialized JSON
         - authenticatorData: RP ID Hash || U2F Sign() Response
         - signature: U2F Sign() Response
    */
    is(aAssertion.type, "public-key", "Credential type must be public-key")
    ok(aAssertion.rawId.byteLength > 0, "Key ID exists");
    is(aAssertion.id, bytesToBase64UrlSafe(new Uint8Array(aAssertion.rawId)), "Encoded Key ID and Raw Key ID match");
    ok(aAssertion.response.authenticatorData === aAssertion.response.authenticatorData, "AuthenticatorAssertionResponse.AuthenticatorData is SameObject");
    ok(aAssertion.response.authenticatorData instanceof ArrayBuffer, "AuthenticatorAssertionResponse.AuthenticatorData is an ArrayBuffer");
    ok(aAssertion.response.signature === aAssertion.response.signature, "AuthenticatorAssertionResponse.Signature is SameObject");
    ok(aAssertion.response.signature instanceof ArrayBuffer, "AuthenticatorAssertionResponse.Signature is an ArrayBuffer");
    ok(aAssertion.response.userHandle === null, "AuthenticatorAssertionResponse.UserHandle is null for u2f authenticators");

    ok(aAssertion.response.authenticatorData.byteLength > 0, "Authenticator data exists");
    let clientData = JSON.parse(buffer2string(aAssertion.response.clientDataJSON));
    is(clientData.challenge, bytesToBase64UrlSafe(gAssertionChallenge), "Challenge is correct");
    is(clientData.origin, window.location.origin, "Origin is correct");
    is(clientData.type, "webauthn.get", "Type is correct");

    let attestation = await webAuthnDecodeAuthDataArray(aAssertion.response.authenticatorData);
    ok(new Uint8Array(attestation.flags)[0] & flag_TUP == flag_TUP, "User presence flag must be set");
    is(attestation.counter.byteLength, 4, "Counter must be 4 bytes");
    let params = await deriveAppAndChallengeParam(window.location.host, aAssertion.response.clientDataJSON, attestation);
    console.log(params);
    console.log("ClientData buffer: ", hexEncode(aAssertion.response.clientDataJSON));
    console.log("ClientDataHash: ", hexEncode(params.challengeParam));
    let signedData = await assembleSignedData(params.appParam, params.attestation.flags,
                                              params.attestation.counter, params.challengeParam);
    console.log(aPublicKey, signedData, aAssertion.response.signature);
    return await verifySignature(aPublicKey, signedData, aAssertion.response.signature);
  }

  async function testMakeCredential() {
    let rp = {id: document.domain, name: "none"};
    let user = {id: new Uint8Array(), name: "none", displayName: "none"};
    let param = {type: "public-key", alg: cose_alg_ECDSA_w_SHA256};
    let makeCredentialOptions = {
      rp,
      user,
      challenge: gCredentialChallenge,
      pubKeyCredParams: [param],
      attestation: "direct"
    };
    let credential = await credm.create({publicKey: makeCredentialOptions})
    let decodedCredential = await decodeCreatedCredential(credential);
    await testMakeDuplicate(decodedCredential);
  }

  async function testMakeDuplicate(aCredInfo) {
    let rp = {id: document.domain, name: "none"};
    let user = {id: new Uint8Array(), name: "none", displayName: "none"};
    let param = {type: "public-key", alg: cose_alg_ECDSA_w_SHA256};
    let makeCredentialOptions = {
      rp,
      user,
      challenge: gCredentialChallenge,
      pubKeyCredParams: [param],
      excludeCredentials: [{type: "public-key", id: new Uint8Array(aCredInfo.rawId),
                     transports: ["usb"]}]
    };
    await credm.create({publicKey: makeCredentialOptions})
    .then(function() {
      // We should have errored here!
      ok(false, "The excludeList didn't stop a duplicate being created!");
    }).catch((aReason) => {
      ok(aReason.toString().startsWith("InvalidStateError"), "Expect InvalidStateError, got " + aReason);
    });
    await testAssertion(aCredInfo);
  }

  async function testAssertion(aCredInfo) {
    let newCredential = {
      type: "public-key",
      id: new Uint8Array(aCredInfo.rawId),
      transports: ["usb"],
    }

    let publicKeyCredentialRequestOptions = {
      challenge: gAssertionChallenge,
      timeout: 5000, // the minimum timeout is actually 15 seconds
      rpId: document.domain,
      allowCredentials: [newCredential]
    };
    let assertion = await credm.get({publicKey: publicKeyCredentialRequestOptions});
    let sigVerifyResult = await checkAssertionAndSigValid(aCredInfo.publicKeyHandle, assertion);
    ok(sigVerifyResult, "Signing signature verified");
  }
});

</script>

</body>
</html>

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