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How to use parseAttestedCredentialData method in wpt

Best JavaScript code snippet using wpt

utils.js

...88  key.x = new Uint8Array(cbor[-2]);89  key.y = new Uint8Array(cbor[-3]);90  return key;91}92function parseAttestedCredentialData(attestedCredentialData) {93  // Parse the attested credential data according to94  // https://w3c.github.io/webauthn/#attested-credential-data95  let aaguid = attestedCredentialData.slice(0, 16);96  let credentialIdLength = (attestedCredentialData[16] << 8)97                         + attestedCredentialData[17];98  let credentialId =99      attestedCredentialData.slice(18, 18 + credentialIdLength);100  let credentialPublicKey = parseCosePublicKey(101      attestedCredentialData.slice(18 + credentialIdLength,102                                   attestedCredentialData.length));103  return { aaguid, credentialIdLength, credentialId, credentialPublicKey };104}105function parseAuthenticatorData(authenticatorData) {106  // Parse the authenticator data according to107  // https://w3c.github.io/webauthn/#sctn-authenticator-data108  assert_greater_than_equal(authenticatorData.length, 37);109  let flags = authenticatorData[32];110  let counter = authenticatorData.slice(33, 37);111  let attestedCredentialData = authenticatorData.length > 37 ?112        parseAttestedCredentialData(authenticatorData.slice(37)) : null;113  let extensions = null;114  if (attestedCredentialData &&115      authenticatorData.length > 37 + attestedCredentialData.length) {116    extensions = authenticatorData.slice(37 + attestedCredentialData.length);117  }118  return {119    rpIdHash: authenticatorData.slice(0, 32),120    flags: {121      up: !!(flags & 0x01),122      uv: !!(flags & 0x04),123      at: !!(flags & 0x40),124      ed: !!(flags & 0x80),125    },126    counter: (counter[0] << 24)...

attestation.ts

Source: attestation.ts

...51    // @ts-ignore52    const validateSig = await jscu.pkc.verify(new Uint8Array(verificationData), signature, jscuKeyObj, 'SHA-256', {format: 'der'});53    if (!validateSig) return {valid: false};54    // Get Public Key From AuthData55    const parsed = await parseAttestedCredentialData(new Uint8Array(authData));56    return {valid: true, credentialPublicKey: parsed.publicKeyPem, attestationCertificate: pemCert};57  } else return {valid: false};...

Using AI Code Generation

1const wptools = require('wptools')2const fs = require('fs')3const input = fs.readFileSync('test.txt', 'utf8')4const output = wptools.parseAttestedCredentialData(input)5console.log(output)6{ aaguid: '00000000-0000-0000-0000-000000000000',

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