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var register_key = async function( e )
{
e.preventDefault();
var key_name = $( '#keyname' ).val();
try {
var credentialCreateOptionsFromServer = await $.ajax( {
dataType: 'json',
method: 'POST',
data: {
key_name: key_name
}
} );
} catch ( err ) {
return console.error( "Failed to generate credential request options: ", credentialCreateOptionsFromServer )
}
var publicKeyCredentialCreateOptions = transformCredentialCreateOptions( credentialCreateOptionsFromServer );
try {
var credential = await navigator.credentials.create( {
publicKey: publicKeyCredentialCreateOptions
} );
} catch ( err ) {
return console.error( "Error creating credential: ", err );
}
var newAssertionForServer = transformNewAssertionForServer( credential );
try {
var assertionValidationResponse = await $.ajax( {
dataType: 'json',
method: 'POST',
data: newAssertionForServer
} );
} catch ( err ) {
return console.error( "Server validation of credential failed:", err );
}
toastr.success( "Key added" );
{
try {
var credentialRequestOptionsFromServer = await $.ajax( {
url: '/u2f/begin_assertion',
dataType: 'json'
} );
if( credentialRequestOptionsFromServer.error )
throw credentialRequestOptionsFromServer.message;
} catch( err ) {
return toastr.error( err, "Error when getting request options from server" );
}
credentialRequestOptionsFromServer = credentialRequestOptionsFromServer.data;
credentialRequestOptionsFromServer = transformCredentialRequestOptions( credentialRequestOptionsFromServer );
try {
var assertion = await navigator.credentials.get( {
publicKey: credentialRequestOptionsFromServer
} );
} catch ( err ) {
return toastr.error( err, "Error when creating credential" );
}
var assertion = transformAssertionForServer( assertion );
try {
var response = await $.ajax( {
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dataType: 'json',
method: 'POST',
data: assertion
} );
if( response.error )
throw response.message;
} catch ( err ) {
return toastr.error( err, "Error when validating assertion on server" );
}
toastr.success( "Logged in" );
location.href = "/";
}
var b64enc = function( buf )
{
return base64js.fromByteArray( buf )
.replace( /\+/g, "-" )
.replace( /\//g, "_" )
.replace( /=/g, "" );
}
var b64RawEnc = function( buf )
{
return base64js.fromByteArray( buf )
.replace( /\+/g, "-" )
.replace( /\//g, "_" );
}
var hexEncode = function( buf )
{
return Array.from( buf )
.map( function( x )
{
return ( "0" + x.toString( 16 ) ).substr( -2 );
} )
.join( "" );
}
var transformCredentialRequestOptions = function( credentialRequestOptionsFromServer )
{
var { challenge, allowCredentials } = credentialRequestOptionsFromServer;
challenge = Uint8Array.from( atob( challenge ), c => c.charCodeAt( 0 ) );
allowCredentials = allowCredentials.map( function( credentialDescriptor )
{
var { id } = credentialDescriptor;
id = id.replace( /\_/g, "/" ).replace( /\-/g, "+" );
id = Uint8Array.from( atob( id ), function( c ){ return c.charCodeAt( 0 ) } );
return Object.assign( {}, credentialDescriptor, { id } );
} );
return Object.assign(
{},
credentialRequestOptionsFromServer,
{
challenge,
allowCredentials
}
);
};
var transformCredentialCreateOptions = function( credentialCreateOptionsFromServer )
{
var { challenge, user } = credentialCreateOptionsFromServer;
user.id = Uint8Array.from(
atob( credentialCreateOptionsFromServer.user.id ),
function( c )
{
return c.charCodeAt( 0 );
}
);
challenge = Uint8Array.from(
atob( credentialCreateOptionsFromServer.challenge ),
function( c )
{
return c.charCodeAt( 0 );
}
);
var transformedCredentialCreateOptions = Object.assign(
{},
credentialCreateOptionsFromServer,
{
challenge,
user
}
);
return transformedCredentialCreateOptions;
}
var transformNewAssertionForServer = function( newAssertion )
{
var attObj = new Uint8Array( newAssertion.response.attestationObject );
var clientDataJSON = new Uint8Array( newAssertion.response.clientDataJSON );
var rawId = new Uint8Array( newAssertion.rawId );
var registrationClientExtensions = newAssertion.getClientExtensionResults();
return {
id: newAssertion.id,
rawId: b64enc( rawId ),
type: newAssertion.type,
attObj: b64enc( attObj ),
clientData: b64enc( clientDataJSON ),
registrationClientExtensions: JSON.stringify( registrationClientExtensions )
};
}
var transformAssertionForServer = function( newAssertion )
{
var authData = new Uint8Array( newAssertion.response.authenticatorData );
var clientDataJSON = new Uint8Array( newAssertion.response.clientDataJSON );
var rawId = new Uint8Array( newAssertion.rawId );
var sig = new Uint8Array( newAssertion.response.signature );
var assertionClientExtensions = newAssertion.getClientExtensionResults();
return {
id: newAssertion.id,
rawId: b64enc( rawId ),
type: newAssertion.type,
authData: b64RawEnc( authData ),
clientData: b64RawEnc( clientDataJSON ),
signature: hexEncode( sig ),
assertionClientExtensions: JSON.stringify( assertionClientExtensions )
};
};