Implementierung von Zwei-Faktor-Authentifizierung (2FA) in Node.js mit Authenticator-Apps
Erfahren Sie, wie Sie die Zwei-Faktor-Authentifizierung (2FA) in Node.js mit Authenticator-Apps, TOTP und der otplib-Bibliothek implementieren. Diese Schritt-für-Schritt-Anleitung deckt alles ab, von der Erstellung von QR-Codes bis zur Überprüfung von Authentifizierungscodes.
YijunDeveloper
Verschwenden Sie keine Wochen mit Benutzerauthentifizierung
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In traditionellen Anwendungen verwenden wir typischerweise E-Mail/Benutzername/Telefon als unsere Identitätskennzeichen. Durch die Kombination dieser Identitätskennzeichen mit entsprechenden Passwörtern oder Verifizierungscodes können wir den Authentifizierungsprozess abschließen.
In Szenarien mit höheren Sicherheitsanforderungen reicht es jedoch nicht aus, sich allein auf Identitätskennzeichen für die Authentifizierung zu verlassen. Dies liegt daran, dass diese Identitätskennzeichen und ihre entsprechenden Verifizierungsinformationen möglicherweise anfällig für Lecks sind.
Hier kommt die Zwei-Faktor-Authentifizierung (2FA) ins Spiel – eine zusätzliche Sicherheitsschicht, die erfordert, dass Benutzer zwei verschiedene Authentifizierungsfaktoren bereitstellen, um ihre Identität zu überprüfen und sicherzustellen, dass die Person, die versucht, auf das Konto zuzugreifen, tatsächlich der legitime Benutzer ist.
Häufige Methoden der 2FA umfassen:
TOTP-Authentifizierung mit Authenticator-Apps
Biometrische Authentifizierung
Gerätebasierte Authentifizierung
SMS-Verifizierungscodes
In diesem Tutorial konzentrieren wir uns darauf, TOTP-basierte 2FA mit Authenticator-Apps in Ihrer Node.js-Anwendung mithilfe der otplib-Bibliothek zu implementieren.
Mit einem gemeinsam genutzten TOTP-Geheimschlüssel zwischen dem Telefon des Benutzers und dem App-Server können das Telefon des Benutzers und der App-Server denselben TOTP-Code zu einem bestimmten Zeitpunkt generieren:
Da die TOTP-Erzeugung zeitbasiert ist, kann sie offline berechnet werden. Zudem erzeugt TOTP eine numerische Zeichenfolge, was es einfach und benutzerfreundlich macht. Daher wird die Verifizierung von TOTP häufig als Mittel der Zwei-Faktor-Authentifizierung verwendet.
Wenn Benutzer TOTP als Zwei-Faktor-Authentifizierungsmethode verwenden, stehen sie häufig vor der Herausforderung, das TOTP-Geheimnis zu speichern und TOTP-Codes zu generieren. Hier kommen Authenticator-Apps ins Spiel. Wir können Authenticator-Apps verwenden, um das TOTP-Geheimnis zu speichern, und die Authenticator-Apps werden automatisch TOTP-Codes für Sie generieren. Wenn eine Verifizierung erforderlich ist, müssen Sie nur Ihre Authenticator-App öffnen, und Sie erhalten den TOTP-Code, der dem TOTP-Geheimnis entspricht. Beliebte Authenticator-Apps sind Google Authenticator und Microsoft Authenticator.
Der Prozess der Implementierung von TOTP als Zwei-Faktor-Authentifizierung umfasst zwei Schritte:
Binden eines TOTP-Geheimnisses an den Benutzer.
Verifizieren des TOTP-Codes des Benutzers mithilfe des zugehörigen TOTP-Geheimnisses.
Der Prozess, TOTP an einen Benutzer zu binden, ist wie folgt:
Sobald der Benutzer TOTP gebunden hat, kann er es zur Verifizierung verwenden. Der Prozess ist wie folgt:
Wie im Diagramm veranschaulicht, verwenden wir auf der Benutzerseite Authenticator-Apps, um das TOTP-Geheimnis zu verwalten und TOTP-Codes zu generieren. Auf der Serverseite müssen wir die Generierung eines TOTP-Geheimnisses unterstützen und den vom Benutzer gesendeten TOTP-Code validieren. In diesem Artikel verwenden wir otpllib als Beispiel, um TOTP-bezogene Funktionen auf der Serverseite zu integrieren.
Implementierung von TOTP-basierter 2FA mithilfe von otplib für Ihre Node.js-App#
Angenommen, Ihre App basiert auf Express.js und Benutzer melden sich über den Endpunkt /sign-in an, sieht der Plan zur Unterstützung von TOTP im Benutzeranmeldeprozess wie folgt aus:
Wenn der Benutzer nicht an TOTP gebunden ist, senden Sie das TOTP-Geheimnis in Form eines QR-Codes an den Benutzer und fordern Sie ihn auf, TOTP zu binden.
Wenn der Benutzer bereits TOTP gebunden hat, fordern Sie ihn auf, TOTP zu verifizieren.
Zunächst installieren wir die Abhängigkeiten für das Projekt: otplib und qrcode:
Als Nächstes verbessern wir unseren /sign-in Endpunkt.
Entsprechend unserer Implementierung senden wir, wenn ein Benutzer nicht an TOTP gebunden ist, einen QR-Code an das Frontend:
Der Benutzer scannt den QR-Code mit der Authenticator-App, und die Authenticator-App generiert einen TOTP-Code und speichert das zugehörige TOTP-Geheimnis.
Der Benutzer sendet den erhaltenen TOTP-Code zurück an den App-Server. Wenn der Code erfolgreich verifiziert wurde, können wir dieses TOTP dann an den Benutzer binden.
Lassen Sie uns also eine /verify-totp API implementieren, um den vom Benutzer gesendeten TOTP-Code zu empfangen:
Auf diese Weise haben wir TOTP erfolgreich für den Benutzer gebunden. Anschließend muss der Benutzer beim Anmelden nur die Authenticator-App öffnen, den Verifizierungscode senden, der dem zuvor gebundenen TOTP-Geheimnis entspricht, und der Authentifizierungsprozess wird abgeschlossen.
In der /verify-totp API verwenden wir das zuvor an den Benutzer gebundene TOTP-Geheimnis, um den TOTP-Code zu verifizieren.
Auf Grundlage dieses Artikels sollten Sie nun in der Lage sein, die Verifizierung durch Authenticator-Apps in Ihre Anwendungen zu integrieren.
Dies ist jedoch nur ein einfaches Beispiel. Wenn Ihre App groß ist oder voraussichtlich komplex werden wird, kann die Integration einer neuen Authentifizierungsmethode erhebliche Kosten verursachen.
Die gute Nachricht ist: Logto, eine umfassende Lösung für Identitätsauthentifizierung, bietet Unterstützung für die Multi-Faktor-Authentifizierung (MFA), einschließlich Verifizierung durch Authenticator-Apps. Indem Sie Logto nutzen, können Sie in nur wenigen Minuten einen sicheren und effizienten Benutzeranmeldeprozess mit MFA in Ihre Anwendung nahtlos integrieren!
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transform='scale(.5)'/%3e%3c/symbol%3e%3c/defs%3e%3cdefs%3e%3csymbol height='24' width='24' id='clock'%3e%3cpath d='M12 2c5.514 0 10 4.486 10 10s-4.486 10-10 10-10-4.486-10-10 4.486-10 10-10zm0-2c-6.627 0-12 5.373-12 12s5.373 12 12 12 12-5.373 12-12-5.373-12-12-12zm5.848 12.459c.202.038.202.333.001.372-1.907.361-6.045 1.111-6.547 1.111-.719 0-1.301-.582-1.301-1.301 0-.512.77-5.447 1.125-7.445.034-.192.312-.181.343.014l.985 6.238 5.394 1.011z' transform='scale(.5)'/%3e%3c/symbol%3e%3c/defs%3e%3cdefs%3e%3cmarker orient='auto-start-reverse' markerHeight='12' markerWidth='12' markerUnits='userSpaceOnUse' refY='5' refX='7.9' id='arrowhead'%3e%3cpath d='M -1 0 L 10 5 L 0 10 z'/%3e%3c/marker%3e%3c/defs%3e%3cdefs%3e%3cmarker refY='4.5' refX='4' orient='auto' markerHeight='8' markerWidth='15' id='crosshead'%3e%3cpath style='stroke-dasharray: 0%2c 0%3b' d='M 1%2c2 L 6%2c7 M 6%2c2 L 1%2c7' stroke-width='1pt' stroke='black' fill='none'/%3e%3c/marker%3e%3c/defs%3e%3cdefs%3e%3cmarker orient='auto' markerHeight='28' markerWidth='20' refY='7' refX='15.5' id='filled-head'%3e%3cpath d='M 18%2c7 L9%2c13 L14%2c7 L9%2c1 Z'/%3e%3c/marker%3e%3c/defs%3e%3cdefs%3e%3cmarker orient='auto' markerHeight='40' markerWidth='60' refY='15' refX='15' id='sequencenumber'%3e%3ccircle r='6' cy='15' cx='15'/%3e%3c/marker%3e%3c/defs%3e%3ctext style='font-family: arial%2c sans-serif%3b font-size: 16px%3b font-weight: 400%3b' dy='1em' class='messageText' alignment-baseline='middle' dominant-baseline='middle' text-anchor='middle' y='80' x='786'%3e(1) Anmelden mit einem Kennzeichen%3c/text%3e%3cline style='fill: none%3b' marker-end='url(%23arrowhead)' stroke='none' stroke-width='2' class='messageLine0' y2='109' x2='994' y1='109' x1='578'/%3e%3ctext style='font-family: arial%2c sans-serif%3b font-size: 16px%3b font-weight: 400%3b' dy='1em' class='messageText' alignment-baseline='middle' dominant-baseline='middle' text-anchor='middle' y='124' x='999'%3e(2) Kennzeichen %c3%bcberpr%c3%bcft%2c aber kein TOTP-Geheimnis beim Benutzer gefunden%3c/text%3e%3cpath style='fill: none%3b' marker-end='url(%23arrowhead)' stroke='none' stroke-width='2' class='messageLine0' d='M 999%2c153 C 1059%2c143 1059%2c183 999%2c173'/%3e%3ctext style='font-family: arial%2c sans-serif%3b font-size: 16px%3b font-weight: 400%3b' dy='1em' class='messageText' alignment-baseline='middle' dominant-baseline='middle' text-anchor='middle' y='198' x='999'%3e(3) Generiere TOTP-Geheimnis f%c3%bcr den Benutzer und speichere es lokal%3c/text%3e%3cpath style='fill: none%3b' marker-end='url(%23arrowhead)' stroke='none' stroke-width='2' class='messageLine0' d='M 999%2c227 C 1059%2c217 1059%2c257 999%2c247'/%3e%3ctext style='font-family: arial%2c sans-serif%3b font-size: 16px%3b font-weight: 400%3b' dy='1em' class='messageText' alignment-baseline='middle' dominant-baseline='middle' text-anchor='middle' y='272' x='789'%3e(4) Sende das TOTP-Geheimnis an den Benutzer%3c/text%3e%3cline style='stroke-dasharray: 3%2c 3%3b fill: none%3b' marker-end='url(%23arrowhead)' stroke='none' stroke-width='2' class='messageLine1' y2='301' x2='581' y1='301' x1='997'/%3e%3ctext style='font-family: arial%2c sans-serif%3b font-size: 16px%3b font-weight: 400%3b' dy='1em' class='messageText' alignment-baseline='middle' dominant-baseline='middle' text-anchor='middle' y='316' x='328'%3e(5) Speichert das TOTP-Geheimnis%3c/text%3e%3cline style='fill: none%3b' marker-end='url(%23arrowhead)' stroke='none' stroke-width='2' class='messageLine0' y2='345' x2='79' y1='345' x1='576'/%3e%3ctext style='font-family: arial%2c sans-serif%3b font-size: 16px%3b font-weight: 400%3b' dy='1em' class='messageText' alignment-baseline='middle' dominant-baseline='middle' text-anchor='middle' y='360' x='325'%3e(6) Generiere einen TOTP-Code durch das TOTP-Geheimnis%3c/text%3e%3cline style='stroke-dasharray: 3%2c 3%3b fill: none%3b' marker-end='url(%23arrowhead)' stroke='none' stroke-width='2' class='messageLine1' y2='389' x2='573' y1='389' 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markerHeight='28' markerWidth='20' refY='7' refX='15.5' id='filled-head'%3e%3cpath d='M 18%2c7 L9%2c13 L14%2c7 L9%2c1 Z'/%3e%3c/marker%3e%3c/defs%3e%3cdefs%3e%3cmarker orient='auto' markerHeight='40' markerWidth='60' refY='15' refX='15' id='sequencenumber'%3e%3ccircle r='6' cy='15' cx='15'/%3e%3c/marker%3e%3c/defs%3e%3ctext style='font-family: arial%2c sans-serif%3b font-size: 16px%3b font-weight: 400%3b' dy='1em' class='messageText' alignment-baseline='middle' dominant-baseline='middle' text-anchor='middle' y='80' x='897'%3e(1) Anmelden mit einem Kennzeichen%3c/text%3e%3cline style='fill: none%3b' marker-end='url(%23arrowhead)' stroke='none' stroke-width='2' class='messageLine0' y2='109' x2='1114' y1='109' x1='680'/%3e%3ctext style='font-family: arial%2c sans-serif%3b font-size: 16px%3b font-weight: 400%3b' dy='1em' class='messageText' alignment-baseline='middle' dominant-baseline='middle' text-anchor='middle' y='124' x='1119'%3e(2) Kennzeichen %c3%bcberpr%c3%bcft%2c das TOTP-Geheimnis des Benutzers gefunden%3c/text%3e%3cpath style='fill: none%3b' marker-end='url(%23arrowhead)' stroke='none' stroke-width='2' class='messageLine0' d='M 1119%2c153 C 1179%2c143 1179%2c183 1119%2c173'/%3e%3ctext style='font-family: arial%2c sans-serif%3b font-size: 16px%3b font-weight: 400%3b' dy='1em' class='messageText' alignment-baseline='middle' dominant-baseline='middle' text-anchor='middle' y='198' x='900'%3e(3) Fordert den Benutzer zur TOTP-Verifizierung auf%3c/text%3e%3cline style='stroke-dasharray: 3%2c 3%3b fill: none%3b' marker-end='url(%23arrowhead)' stroke='none' stroke-width='2' class='messageLine1' y2='227' x2='683' y1='227' x1='1117'/%3e%3ctext style='font-family: arial%2c sans-serif%3b font-size: 16px%3b font-weight: 400%3b' dy='1em' class='messageText' alignment-baseline='middle' dominant-baseline='middle' text-anchor='middle' y='242' x='379'%3e(4) %c3%96ffnet die Authenticator-App%3c/text%3e%3cline style='fill: none%3b' marker-end='url(%23arrowhead)' stroke='none' stroke-width='2' class='messageLine0' y2='271' x2='79' y1='271' x1='678'/%3e%3ctext style='font-family: arial%2c sans-serif%3b font-size: 16px%3b font-weight: 400%3b' dy='1em' class='messageText' alignment-baseline='middle' dominant-baseline='middle' text-anchor='middle' y='286' x='376'%3e(5) Generiert einen TOTP-Code durch das TOTP-Geheimnis des Benutzers%3c/text%3e%3cline style='stroke-dasharray: 3%2c 3%3b fill: none%3b' marker-end='url(%23arrowhead)' stroke='none' stroke-width='2' class='messageLine1' y2='315' x2='675' y1='315' x1='76'/%3e%3ctext style='font-family: arial%2c sans-serif%3b font-size: 16px%3b font-weight: 400%3b' dy='1em' class='messageText' alignment-baseline='middle' dominant-baseline='middle' text-anchor='middle' y='330' x='897'%3e(6) Sendet den TOTP-Code an den Server%3c/text%3e%3cline style='fill: none%3b' marker-end='url(%23arrowhead)' stroke='none' stroke-width='2' class='messageLine0' y2='359' x2='1114' y1='359' x1='680'/%3e%3ctext style='font-family: arial%2c sans-serif%3b font-size: 16px%3b font-weight: 400%3b' dy='1em' class='messageText' alignment-baseline='middle' dominant-baseline='middle' text-anchor='middle' y='374' x='1119'%3e(7) Ruft das verifizierte TOTP-Geheimnis des Benutzers ab und generiert einen TOTP-Code%3c/text%3e%3cpath style='fill: none%3b' marker-end='url(%23arrowhead)' stroke='none' stroke-width='2' class='messageLine0' d='M 1119%2c403 C 1179%2c393 1179%2c433 1119%2c423'/%3e%3ctext style='font-family: arial%2c sans-serif%3b font-size: 16px%3b font-weight: 400%3b' dy='1em' class='messageText' alignment-baseline='middle' dominant-baseline='middle' text-anchor='middle' y='448' x='1119'%3e(8) Vergleicht den empfangenen TOTP-Code mit dem generierten%3c/text%3e%3cpath style='fill: none%3b' marker-end='url(%23arrowhead)' stroke='none' stroke-width='2' class='messageLine0' d='M 1119%2c477 C 1179%2c467 1179%2c507 1119%2c497'/%3e%3ctext style='font-family: arial%2c sans-serif%3b font-size: 16px%3b font-weight: 400%3b' dy='1em' class='messageText' alignment-baseline='middle' dominant-baseline='middle' text-anchor='middle' y='522' x='1119'%3e(9) TOTP-Code erfolgreich verifiziert%3c/text%3e%3cpath style='fill: none%3b' marker-end='url(%23arrowhead)' stroke='none' stroke-width='2' class='messageLine0' d='M 1119%2c551 C 1179%2c541 1179%2c581 1119%2c571'/%3e%3ctext style='font-family: arial%2c sans-serif%3b font-size: 16px%3b font-weight: 400%3b' dy='1em' class='messageText' alignment-baseline='middle' dominant-baseline='middle' text-anchor='middle' y='596' x='900'%3e(10) Erfolgreich angemeldet%3c/text%3e%3cline style='stroke-dasharray: 3%2c 3%3b fill: none%3b' marker-end='url(%23arrowhead)' stroke='none' stroke-width='2' class='messageLine1' y2='625' x2='683' y1='625' x1='1117'/%3e%3c/svg%3e)
