91 lines
3.0 KiB
JavaScript
91 lines
3.0 KiB
JavaScript
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(function(HydraWebAuthn) {
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HydraWebAuthn.base64ToArrayBuffer = function(base64) {
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var binaryString = HydraWebAuthn.fromBase64URL(base64);
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var bytes = new Uint8Array(binaryString.length);
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for (var i = 0; i < binaryString.length; i++) {
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bytes[i] = binaryString.charCodeAt(i);
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}
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return bytes.buffer;
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}
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HydraWebAuthn.arrayBufferToBase64 = function( buffer ) {
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var binary = '';
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var bytes = new Uint8Array( buffer );
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var len = bytes.byteLength;
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for (var i = 0; i < len; i++) {
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binary += String.fromCharCode( bytes[ i ] );
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}
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return window.btoa( binary );
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}
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HydraWebAuthn.toJSONCredentials = function(credentials) {
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return {
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id: credentials.id,
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rawId: HydraWebAuthn.toBase64URL(credentials.rawId),
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authenticatorAttachment: credentials.authenticatorAttachment,
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type: "public-key",
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clientExtensionResults: (() => {
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const results = credentials.getClientExtensionResults();
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return Object.keys(results).reduce((json, key) => {
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json[key] = HydraWebAuthn.urlsafe(HydraWebAuthn.arrayBufferToBase64(results[key]))
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return json;
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}, {})
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})(),
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response: {
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attestationObject: HydraWebAuthn.urlsafe(HydraWebAuthn.arrayBufferToBase64(credentials.response.attestationObject)),
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clientDataJSON: HydraWebAuthn.urlsafe(HydraWebAuthn.arrayBufferToBase64(credentials.response.clientDataJSON))
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}
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}
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}
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HydraWebAuthn.toJSONAssertion = function(assertion) {
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return {
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id: assertion.id,
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rawId: HydraWebAuthn.urlsafe(HydraWebAuthn.arrayBufferToBase64(assertion.rawId)),
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type: "public-key",
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response: {
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authenticatorData: HydraWebAuthn.urlsafe(HydraWebAuthn.arrayBufferToBase64(assertion.response.authenticatorData)),
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clientDataJSON: HydraWebAuthn.urlsafe(HydraWebAuthn.arrayBufferToBase64(assertion.response.clientDataJSON)),
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signature: HydraWebAuthn.urlsafe(HydraWebAuthn.arrayBufferToBase64(assertion.response.signature)),
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userHandle: assertion.response.userHandle
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}
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}
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}
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HydraWebAuthn.base64 = function(str) {
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return HydraWebAuthn.bytesToBase64(new TextEncoder().encode(str));
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}
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HydraWebAuthn.toBase64URL = function(str) {
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return HydraWebAuthn.urlsafe(HydraWebAuthn.base64(str));
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}
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HydraWebAuthn.fromBase64URL = function(str) {
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str = str
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.replace(/-/g, '+')
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.replace(/_/g, '/');
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var pad = str.length % 4;
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if(pad) {
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if(pad === 1) {
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throw new Error('InvalidLengthError: Input base64url string is the wrong length to determine padding');
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}
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str += new Array(5-pad).join('=');
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}
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return atob(str);
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}
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HydraWebAuthn.urlsafe = function(base64) {
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return base64.replace(/\+/g, '-')
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.replace(/\//g, '_')
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.replace(/=+$/, '')
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}
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HydraWebAuthn.bytesToBase64 = function(bytes) {
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const binString = String.fromCodePoint(...bytes);
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return btoa(binString);
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}
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}(window.HydraWebAuthn = {}))
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