{"id":7366,"date":"2020-06-03T13:26:16","date_gmt":"2020-06-03T11:26:16","guid":{"rendered":"https:\/\/www.l3s.de\/?page_id=7366"},"modified":"2025-04-28T13:13:01","modified_gmt":"2025-04-28T11:13:01","slug":"post-quantum-cryptography-for-e-mail","status":"publish","type":"page","link":"https:\/\/www.l3s.de\/de\/magazine\/binaire-articles\/post-quantum-cryptography-for-e-mail\/","title":{"rendered":"Post-Quanten-Kryptographie f\u00fcr E-Mails"},"content":{"rendered":"<div data-colibri-id=\"7366-c1\" class=\"style-6872 style-local-7366-c1 position-relative\">\n  <!---->\n  <div data-colibri-component=\"section\" data-colibri-id=\"7366-c2\" id=\"reusable-sections\" class=\"h-section h-section-global-spacing d-flex align-items-lg-center align-items-md-center align-items-center style-6873 style-local-7366-c2 position-relative\">\n    <!---->\n    <!---->\n    <div class=\"h-section-grid-container h-section-boxed-container\">\n      <!---->\n      <div data-colibri-id=\"7366-c3\" class=\"h-row-container gutters-row-lg-3 gutters-row-md-3 gutters-row-0 gutters-row-v-lg-3 gutters-row-v-md-3 gutters-row-v-3 style-6874 style-local-7366-c3 position-relative\">\n        <div class=\"background-wrapper\">\n          <div class=\"background-layer background-layer-media-container-lg\">\n            <div data-enabled=\"true\" data-colibri-component=\"parallax\" class=\"background-layer paraxify lazyload\" model-id=\"7366-c3\" media=\"desktop\" is-preview=\"true\" style=\"background-image:inherit;\" data-bg-image=\"url(&quot;https:\/\/www.l3s.de\/wp-content\/uploads\/2022\/09\/AdobeStock_39661065_klein_PQMail.jpeg&quot;)\"><\/div>\n          <\/div>\n          <div class=\"background-layer background-layer-media-container-md\">\n            <div data-enabled=\"true\" data-colibri-component=\"parallax\" class=\"background-layer paraxify lazyload\" model-id=\"7366-c3\" media=\"tablet\" is-preview=\"true\" style=\"background-image:inherit;\" data-bg-image=\"url(&quot;https:\/\/www.l3s.de\/wp-content\/uploads\/2022\/09\/AdobeStock_39661065_klein_PQMail.jpeg&quot;)\"><\/div>\n          <\/div>\n          <div class=\"background-layer background-layer-media-container\">\n            <div data-enabled=\"true\" data-colibri-component=\"parallax\" class=\"background-layer paraxify lazyload\" model-id=\"7366-c3\" media=\"mobile\" is-preview=\"true\" style=\"background-image:inherit;\" data-bg-image=\"url(&quot;https:\/\/www.l3s.de\/wp-content\/uploads\/2022\/09\/AdobeStock_39661065_klein_PQMail.jpeg&quot;)\"><\/div>\n          <\/div>\n        <\/div>\n        <div class=\"h-row justify-content-lg-center justify-content-md-center justify-content-center align-items-lg-stretch align-items-md-stretch align-items-stretch gutters-col-lg-3 gutters-col-md-3 gutters-col-0 gutters-col-v-lg-3 gutters-col-v-md-3 gutters-col-v-3\">\n          <!---->\n          <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-6875-outer style-local-7366-c4-outer\">\n            <div data-colibri-id=\"7366-c4\" class=\"d-flex h-flex-basis h-column__inner h-ui-empty-state-container h-px-lg-3 h-px-md-3 h-px-3 v-inner-lg-3 v-inner-md-3 v-inner-3 style-6875 style-local-7366-c4 position-relative\">\n              <!---->\n              <!---->\n              <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100\">\n                <!---->\n              <\/div>\n            <\/div>\n          <\/div>\n        <\/div>\n      <\/div>\n      <div data-colibri-id=\"7366-c5\" class=\"h-row-container gutters-row-lg-0 gutters-row-md-0 gutters-row-0 gutters-row-v-lg-0 gutters-row-v-md-0 gutters-row-v-0 style-11858 style-local-7366-c5 position-relative\">\n        <!---->\n        <div class=\"h-row justify-content-lg-center justify-content-md-center justify-content-center align-items-lg-stretch align-items-md-stretch align-items-stretch gutters-col-lg-0 gutters-col-md-0 gutters-col-0 gutters-col-v-lg-0 gutters-col-v-md-0 gutters-col-v-0\">\n          <!---->\n          <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-11859-outer style-local-7366-c6-outer\">\n            <div data-colibri-id=\"7366-c6\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-0 h-px-md-0 h-px-0 v-inner-lg-0 v-inner-md-0 v-inner-0 style-11859 style-local-7366-c6 position-relative\">\n              <!---->\n              <!---->\n              <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                <!---->\n                <div data-colibri-id=\"7366-c7\" class=\"h-text h-text-component style-11860 style-local-7366-c7 position-relative h-element\">\n                  <!---->\n                  <!---->\n                  <div class=\"\">\n                    <p>Foto: Adobe Stock<\/p>\n                  <\/div>\n                <\/div>\n              <\/div>\n            <\/div>\n          <\/div>\n        <\/div>\n      <\/div>\n      <div data-colibri-id=\"7366-c8\" class=\"h-row-container gutters-row-lg-2 gutters-row-md-2 gutters-row-0 gutters-row-v-lg-2 gutters-row-v-md-2 gutters-row-v-2 style-6876 style-local-7366-c8 position-relative\">\n        <!---->\n        <div class=\"h-row justify-content-lg-center justify-content-md-center justify-content-center align-items-lg-stretch align-items-md-stretch align-items-stretch gutters-col-lg-2 gutters-col-md-2 gutters-col-0 gutters-col-v-lg-2 gutters-col-v-md-2 gutters-col-v-2\">\n          <!---->\n          <div class=\"h-column h-column-container d-flex h-col-lg h-col-md-auto h-col-auto style-6877-outer style-local-7366-c9-outer\">\n            <div data-colibri-id=\"7366-c9\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-0 h-px-md-0 h-px-0 v-inner-lg-0 v-inner-md-0 v-inner-0 style-6877 style-local-7366-c9 position-relative\">\n              <!---->\n              <!---->\n              <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                <!---->\n                <div data-colibri-id=\"7366-c10\" class=\"h-row-container gutters-row-lg-0 gutters-row-md-0 gutters-row-0 gutters-row-v-lg-0 gutters-row-v-md-0 gutters-row-v-0 style-6878 style-local-7366-c10 position-relative\">\n                  <!---->\n                  <div class=\"h-row justify-content-lg-center justify-content-md-center justify-content-center align-items-lg-stretch align-items-md-stretch align-items-stretch gutters-col-lg-0 gutters-col-md-0 gutters-col-0 gutters-col-v-lg-0 gutters-col-v-md-0 gutters-col-v-0\">\n                    <!---->\n                    <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-6879-outer style-local-7366-c11-outer\">\n                      <div data-colibri-id=\"7366-c11\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-2 h-px-md-2 h-px-2 v-inner-lg-2 v-inner-md-2 v-inner-2 style-6879 style-local-7366-c11 position-relative\">\n                        <!---->\n                        <!---->\n                        <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                          <!---->\n                          <div data-colibri-id=\"7366-c12\" class=\"h-text h-text-component style-6880 style-local-7366-c12 position-relative h-element\">\n                            <!---->\n                            <!---->\n                            <div class=\"\">\n                              <p>Ausgabe 02\/2020<\/p>\n                            <\/div>\n                          <\/div>\n                          <div data-colibri-id=\"7366-c13\" class=\"h-x-container style-6881 style-local-7366-c13 position-relative h-element\">\n                            <!---->\n                            <div class=\"h-x-container-inner style-dynamic-7366-c13-group style-6881-spacing style-local-7366-c13-spacing\"><span class=\"h-link__outer style-6882-outer style-local-7366-c14-outer d-inline-flex h-element\"><a h-use-smooth-scroll=\"true\" href=\"https:\/\/www.l3s.de\/wp-content\/uploads\/2022\/09\/L3S-Binaire-8-Magazin_web.pdf\" target=\"_blank\"  data-colibri-id=\"7366-c14\" class=\"d-flex w-100 align-items-center h-link style-6882 style-local-7366-c14 position-relative\"><!----><!----> <span>Innovationen Krisen Startups<\/span><\/a>\n                              <\/span>\n                            <\/div>\n                          <\/div>\n                          <div data-colibri-id=\"7366-c15\" class=\"style-6883 style-local-7366-c15 position-relative h-element\">\n                            <!---->\n                          <\/div>\n                        <\/div>\n                      <\/div>\n                    <\/div>\n                    <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-6884-outer style-local-7366-c16-outer\">\n                      <div data-colibri-id=\"7366-c16\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-2 h-px-md-2 h-px-2 v-inner-lg-2 v-inner-md-2 v-inner-2 style-6884 style-local-7366-c16 position-relative\">\n                        <!---->\n                        <!---->\n                        <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                          <!---->\n                          <div data-colibri-id=\"7366-c17\" class=\"h-global-transition-all h-heading style-6886 style-local-7366-c17 position-relative h-element\">\n                            <!---->\n                            <div class=\"h-heading__outer style-6886 style-local-7366-c17\">\n                              <!---->\n                              <!---->\n                              <h1 class=\"\">Post-Quanten-Kryptographie f\u00fcr E-Mails<\/h1>\n                            <\/div>\n                          <\/div>\n                          <div data-colibri-id=\"7366-c18\" class=\"style-6887 style-local-7366-c18 position-relative h-element\">\n                            <!---->\n                          <\/div>\n                          <div data-colibri-id=\"7366-c19\" class=\"h-row-container gutters-row-lg-0 gutters-row-md-0 gutters-row-0 gutters-row-v-lg-0 gutters-row-v-md-0 gutters-row-v-0 style-6888 style-local-7366-c19 position-relative\">\n                            <!---->\n                            <div class=\"h-row justify-content-lg-center justify-content-md-center justify-content-center align-items-lg-stretch align-items-md-stretch align-items-stretch gutters-col-lg-0 gutters-col-md-0 gutters-col-0 gutters-col-v-lg-0 gutters-col-v-md-0 gutters-col-v-0\">\n                              <!---->\n                              <div class=\"h-column h-column-container d-flex h-col-lg h-col-md h-col-auto style-6889-outer style-local-7366-c20-outer\">\n                                <div data-colibri-id=\"7366-c20\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-0 h-px-md-0 h-px-0 v-inner-lg-0 v-inner-md-0 v-inner-0 style-6889 style-local-7366-c20 position-relative\">\n                                  <!---->\n                                  <!---->\n                                  <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                                    <!---->\n                                    <div data-colibri-id=\"7366-c21\" class=\"h-text h-text-component style-6890 style-local-7366-c21 position-relative h-element\">\n                                      <!---->\n                                      <!---->\n                                      <div class=\"\">\n                                        <p>E-Mails sind so vertraulich wie Postkarten. Damit kein Dritter den Inhalt lesen kann, m\u00fcssen E-Mails verschl\u00fcsselt werden. Aber ist verschl\u00fcsselte E-Mail-Kommunikation dauerhaft vor fremden Blicken sicher? Prof. Dr. Sascha Fahl vom Forschungszentrum L3S der Leibniz Universit\u00e4t Hannover ist da skeptisch: \u201eWir erwarten, so wie andere Kryptographie-Experten auch, dass in einigen Jahren Quantencomputer gebaut werden k\u00f6nnen, die weit verbreitete Verschl\u00fcsselungsalgorithmen brechen k\u00f6nnen. Dadurch k\u00f6nnen auch Daten, die heute abgefangen und gespeichert werden, in zehn bis 15 Jahren m\u00f6glicherweise einfach entschl\u00fcsselt werden\u201c. Prof. Fahl und sein Team arbeiten daher mit dem hannoverschen E-Mail-Anbieter Tutanota an einer L\u00f6sung: Sie wollen Quantencomputer-resistente Kryptographie in einer frei verf\u00fcgbaren E-Mail-Anwendung implementieren. Die NBank f\u00f6rdert das Kooperationsprojekt \u201ePQmail - Entwicklung einer Post-Quantum-Verschl\u00fcsselung f\u00fcr sichere E-Mail- Kommunikation\u201d  mit Mitteln der Europ\u00e4ischen Union.<\/p>\n                                      <\/div>\n                                    <\/div>\n                                    <div data-colibri-id=\"7366-c22\" class=\"h-text h-text-component style-6890 style-local-7366-c22 position-relative h-element\">\n                                      <!---->\n                                      <!---->\n                                      <div class=\"\">\n                                        <p><strong style=\"font-size: 111%; font-weight: 600;\">Alle derzeit verschl\u00fcsselten E-Mails sind angreifbar<\/strong><\/p>\n                                        <p>\u201eBisher gibt es sehr wenige Anwendungen, die quantensichere Verschl\u00fcsselung einsetzen - und noch keine Implementierung f\u00fcr E-Mails\u201c, sagt Matthias Pfau von Tutanota. \u201eDa gerade vertrauliche E-Mails so wichtig f\u00fcr die berufliche Kommunikation sind, ist es entscheidend, dass wir hier m\u00f6glichst schnell eine sichere L\u00f6sung finden. Immer mehr gesch\u00e4ftliche E-Mails werden Ende-zu-Ende verschl\u00fcsselt. Diese Kommunikation muss auch in Zukunft vertraulich bleiben.\u201c<\/p>\n                                        <p>Die besondere Herausforderung des Projekts liegt darin, dass die Verschl\u00fcsselungsalgorithmen sicher, aber auch performant sein m\u00fcssen. Das hei\u00dft, die Verschl\u00fcsselung muss im Browser, in Desktop-Clients sowie auf mobilen Ger\u00e4ten per Android und iOS-App so gut funktionieren, dass auch \u00e4ltere Ger\u00e4te mit geringem Arbeitsspeicher und weniger Rechenkapazit\u00e4t die Ver- und Entschl\u00fcsselung leisten k\u00f6nnen.<\/p>\n                                      <\/div>\n                                    <\/div>\n                                    <div data-colibri-id=\"7366-c23\" class=\"h-text h-text-component style-6890 style-local-7366-c23 position-relative h-element\">\n                                      <!---->\n                                      <!---->\n                                      <div class=\"\">\n                                        <p><strong style=\"font-size: 111%; font-weight: 600;\">Schutz vor Wirtschaftsspionage<\/strong><\/p>\n                                        <p>Die Entwickler von Tutanota wollen mit Hilfe des L3S die quantensichere Verschl\u00fcsselung exemplarisch in ihren gleichnamigen E-Mail-Client einbauen, damit vertrauliche Kommunikation auch zuk\u00fcnftig nicht von Dritten gelesen werden kann. Wichtig ist dies auch f\u00fcr Unternehmen, die ihre E-Mails gegen Wirtschaftsspionage oder Hackerangriffen absichern wollen.<\/p>\n                                        <p>Bevor Quantencomputer-resistente Verschl\u00fcsselungsalgorithmen in Tutanota genutzt werden k\u00f6nnen, m\u00fcssen die Projektbeteiligten noch einige Aufgaben bew\u00e4ltigen: Zun\u00e4chst steht die Evaluierung verschiedener Post-Quantum-Algorithmen an, deren Standardisierung das amerikanische National Institute of Standards and Technology (NIST) aktuell pr\u00fcft. Au\u00dferdem entwerfen die Forscher ein hybrides Kommunikationsprotokoll, das Perfect Forwards Secrecy unterst\u00fctzt und sich in Tutanota integrieren l\u00e4sst. Perfect Forward Secrecy bedeutet, dass ein Teil eines Verschl\u00fcsselungssystems die Schl\u00fcssel automatisch und h\u00e4ufig \u00e4ndert. Der Sinn des Ganzen: Wenn der zuletzt verwendete Schl\u00fcssel kompromittiert werden sollte, kann damit nur ein kleiner Teil der Daten entschl\u00fcsselt werden. In dem hybriden Protokoll werden die gew\u00e4hlten Post-Quantum-Algorithmen mit etablierten Algorithmen kombiniert. Die Sicherheit der Kommunikation ist also gew\u00e4hrleistet, solange mindestens die Pre- oder die Post-Quantum-Algorithmen sicher sind. Das ist deshalb wichtig, weil sich Post-Quanten-Kryptographie aktuell noch in der Evaluationsphase befindet und jederzeit neue Angriffe gegen Verfahren gefunden werden k\u00f6nnten, die aktuell noch als sicher gelten.<\/p>\n                                        <p>Weitere Schritte im Projekt sind Sicherheitsreviews des hybriden Kommunikationsprotokolls, die Entwicklung eines Prototyps und die Integration in Tutanota zu Test- und Evaluationszwecken - und schlie\u00dflich die Einf\u00fchrung der Quantencomputer-resistenten Verschl\u00fcsselung in Tutanota, die dann jeder kostenlos nutzen kann. Die E-Mail-Sicherheit wird dadurch auch langfristig enorm steigen.<\/p>\n                                      <\/div>\n                                    <\/div>\n                                  <\/div>\n                                <\/div>\n                              <\/div>\n                            <\/div>\n                          <\/div>\n                        <\/div>\n                      <\/div>\n                    <\/div>\n                  <\/div>\n                <\/div>\n              <\/div>\n            <\/div>\n          <\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n  <div data-colibri-component=\"section\" data-colibri-id=\"7366-c24\" id=\"reusable-sections-2\" class=\"h-section h-section-global-spacing d-flex align-items-lg-center align-items-md-center align-items-center style-6894 style-local-7366-c24 position-relative\">\n    <!---->\n    <!---->\n    <div class=\"h-section-grid-container h-section-boxed-container\">\n      <!---->\n      <div data-colibri-id=\"7366-c25\" class=\"h-row-container gutters-row-lg-0 gutters-row-md-0 gutters-row-0 gutters-row-v-lg-0 gutters-row-v-md-0 gutters-row-v-0 style-6895 style-local-7366-c25 position-relative\">\n        <!---->\n        <div class=\"h-row justify-content-lg-center justify-content-md-center justify-content-center align-items-lg-stretch align-items-md-stretch align-items-stretch gutters-col-lg-0 gutters-col-md-0 gutters-col-0 gutters-col-v-lg-0 gutters-col-v-md-0 gutters-col-v-0\">\n          <!---->\n          <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-6896-outer style-local-7366-c26-outer\">\n            <div data-colibri-id=\"7366-c26\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-0 h-px-md-0 h-px-0 v-inner-lg-0 v-inner-md-0 v-inner-0 style-6896 style-local-7366-c26 position-relative\">\n              <!---->\n              <!---->\n              <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                <!---->\n                <div data-colibri-id=\"7366-c27\" class=\"h-divider style-6897 style-local-7366-c27 position-relative h-element\">\n                  <!----><span class=\"h-divider__line style-6897-line style-local-7366-c27-line style-6897-line style-local-7366-c27-line\"><\/span><\/div>\n              <\/div>\n            <\/div>\n          <\/div>\n        <\/div>\n      <\/div>\n      <div data-colibri-id=\"7366-c28\" class=\"h-row-container gutters-row-lg-2 gutters-row-md-2 gutters-row-0 gutters-row-v-lg-2 gutters-row-v-md-2 gutters-row-v-2 style-6898 style-local-7366-c28 position-relative\">\n        <!---->\n        <div class=\"h-row justify-content-lg-center justify-content-md-center justify-content-center align-items-lg-stretch align-items-md-stretch align-items-stretch gutters-col-lg-2 gutters-col-md-2 gutters-col-0 gutters-col-v-lg-2 gutters-col-v-md-2 gutters-col-v-2\">\n          <!---->\n          <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-6899-outer style-local-7366-c29-outer\">\n            <div data-colibri-id=\"7366-c29\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-2 h-px-md-2 h-px-2 v-inner-lg-2 v-inner-md-2 v-inner-2 style-6899 style-local-7366-c29 position-relative\">\n              <!---->\n              <!---->\n              <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                <!---->\n                <div data-colibri-id=\"7366-c30\" class=\"h-global-transition-all h-heading style-6900 style-local-7366-c30 position-relative h-element\">\n                  <!---->\n                  <div class=\"h-heading__outer style-6900 style-local-7366-c30\">\n                    <!---->\n                    <!---->\n                    <h6 class=\"\">Vorgestellte Projekte<\/h6>\n                  <\/div>\n                <\/div>\n                <div data-colibri-id=\"7366-c31\" class=\"d-block style-6901 style-local-7366-c31 position-relative h-element\">\n                  <!---->\n                  <div class=\"h-image__frame-container-outer\">\n                    <a href=\"\/de\/www.tutanota.com\/\" h-use-smooth-scroll=\"true\" class=\"image-link\">\n                      <div class=\"h-image__frame-container\">\n                        <!---->\n                        <!---->\n                        <img decoding=\"async\" width=\"900\" height=\"323\" data-src=\"https:\/\/www.l3s.de\/wp-content\/uploads\/2025\/04\/Tuta_logo.svg_.png\" class=\"wp-image-39727 style-6901-image style-local-7366-c31-image lazyload\" alt=\"\" data-srcset=\"https:\/\/www.l3s.de\/wp-content\/uploads\/2025\/04\/Tuta_logo.svg_.png 900w, https:\/\/www.l3s.de\/wp-content\/uploads\/2025\/04\/Tuta_logo.svg_-300x108.png 300w, https:\/\/www.l3s.de\/wp-content\/uploads\/2025\/04\/Tuta_logo.svg_-768x276.png 768w, https:\/\/www.l3s.de\/wp-content\/uploads\/2025\/04\/Tuta_logo.svg_-18x6.png 18w\" data-sizes=\"(max-width: 900px) 100vw, 900px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 900px; --smush-placeholder-aspect-ratio: 900\/323;\" \/>\n                        <div class=\"h-image__frame h-hide-lg h-hide-md h-hide-sm style-6901-frameImage style-local-7366-c31-frameImage\"><\/div>\n                      <\/div>\n                    <\/a>\n                  <\/div>\n                <\/div>\n              <\/div>\n            <\/div>\n          <\/div>\n          <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-6903-outer style-local-7366-c32-outer\">\n            <div data-colibri-id=\"7366-c32\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-2 h-px-md-2 h-px-2 v-inner-lg-2 v-inner-md-2 v-inner-2 style-6903 style-local-7366-c32 position-relative\">\n              <!---->\n              <!---->\n              <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                <!---->\n                <div data-colibri-id=\"7366-c33\" class=\"h-global-transition-all h-heading style-6900 style-local-7366-c33 position-relative h-element\">\n                  <!---->\n                  <div class=\"h-heading__outer style-6900 style-local-7366-c33\">\n                    <!---->\n                    <!---->\n                    <h6 class=\"\">Kontakt<\/h6>\n                  <\/div>\n                <\/div>\n                <div data-colibri-id=\"7366-c34\" class=\"h-row-container gutters-row-lg-0 gutters-row-md-0 gutters-row-0 gutters-row-v-lg-0 gutters-row-v-md-0 gutters-row-v-0 style-6904 style-local-7366-c34 position-relative\">\n                  <!---->\n                  <div class=\"h-row justify-content-lg-center justify-content-md-center justify-content-center align-items-lg-stretch align-items-md-stretch align-items-stretch gutters-col-lg-0 gutters-col-md-0 gutters-col-0 gutters-col-v-lg-0 gutters-col-v-md-0 gutters-col-v-0\">\n                    <!---->\n                    <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-6905-outer style-local-7366-c35-outer\">\n                      <div data-colibri-id=\"7366-c35\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-2 h-px-md-2 h-px-2 v-inner-lg-2 v-inner-md-2 v-inner-2 style-6905 style-local-7366-c35 position-relative\">\n                        <!---->\n                        <!---->\n                        <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                          <!---->\n                          <div data-colibri-id=\"7366-c36\" class=\"d-block style-6906 style-local-7366-c36 position-relative h-element\">\n                            <!---->\n                            <div class=\"h-image__frame-container-outer\">\n                              <div class=\"h-image__frame-container\">\n                                <!---->\n                                <!---->\n                                <img decoding=\"async\" width=\"1462\" height=\"1462\" data-src=\"https:\/\/www.l3s.de\/wp-content\/uploads\/2022\/09\/bild_sascha_fahl_quadrat.jpeg\" class=\"wp-image-6538 style-6906-image style-local-7366-c36-image lazyload\" alt=\"\" data-srcset=\"https:\/\/www.l3s.de\/wp-content\/uploads\/2022\/09\/bild_sascha_fahl_quadrat.jpeg 1462w, https:\/\/www.l3s.de\/wp-content\/uploads\/2022\/09\/bild_sascha_fahl_quadrat-300x300.jpeg 300w, https:\/\/www.l3s.de\/wp-content\/uploads\/2022\/09\/bild_sascha_fahl_quadrat-1024x1024.jpeg 1024w, https:\/\/www.l3s.de\/wp-content\/uploads\/2022\/09\/bild_sascha_fahl_quadrat-150x150.jpeg 150w, https:\/\/www.l3s.de\/wp-content\/uploads\/2022\/09\/bild_sascha_fahl_quadrat-768x768.jpeg 768w, https:\/\/www.l3s.de\/wp-content\/uploads\/2022\/09\/bild_sascha_fahl_quadrat-12x12.jpeg 12w\" data-sizes=\"(max-width: 1462px) 100vw, 1462px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1462px; --smush-placeholder-aspect-ratio: 1462\/1462;\" \/>\n                                <div class=\"h-image__frame h-hide-lg h-hide-md h-hide-sm style-6906-frameImage style-local-7366-c36-frameImage\"><\/div>\n                              <\/div>\n                            <\/div>\n                          <\/div>\n                          <div data-colibri-id=\"7366-c37\" class=\"h-row-container gutters-row-lg-0 gutters-row-md-0 gutters-row-0 gutters-row-v-lg-0 gutters-row-v-md-0 gutters-row-v-0 style-6907 style-local-7366-c37 position-relative\">\n                            <!---->\n                            <div class=\"h-row justify-content-lg-center justify-content-md-center justify-content-center align-items-lg-stretch align-items-md-stretch align-items-stretch gutters-col-lg-0 gutters-col-md-0 gutters-col-0 gutters-col-v-lg-0 gutters-col-v-md-0 gutters-col-v-0\">\n                              <!---->\n                              <div class=\"h-column h-column-container d-flex h-col-lg h-col-md h-col-auto style-6908-outer style-local-7366-c38-outer\">\n                                <div data-colibri-id=\"7366-c38\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-0 h-px-md-0 h-px-0 v-inner-lg-0 v-inner-md-0 v-inner-0 style-6908 style-local-7366-c38 position-relative\">\n                                  <!---->\n                                  <!---->\n                                  <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                                    <!---->\n                                    <div data-colibri-id=\"7366-c39\" class=\"h-global-transition-all h-heading style-6900 style-local-7366-c39 position-relative h-element\">\n                                      <!---->\n                                      <div class=\"h-heading__outer style-6900 style-local-7366-c39\">\n                                        <!---->\n                                        <!---->\n                                        <h6 class=\"\">Prof. Dr. Sascha Fahl<\/h6>\n                                      <\/div>\n                                    <\/div>\n                                    <div data-colibri-id=\"7366-c40\" class=\"h-x-container style-6910 style-local-7366-c40 position-relative h-element\">\n                                      <!---->\n                                      <div class=\"h-x-container-inner style-dynamic-7366-c40-group style-6910-spacing style-local-7366-c40-spacing\"><span class=\"h-link__outer style-6911-outer style-local-7366-c41-outer d-inline-flex h-element\"><a h-use-smooth-scroll=\"true\" href=\"mailto:fahl@l3s.de\"  data-colibri-id=\"7366-c41\" class=\"d-flex w-100 align-items-center h-link style-6911 style-local-7366-c41 position-relative\"><!----><!----> <span>fahl@l3s.de<\/span><\/a>\n                                        <\/span>\n                                      <\/div>\n                                    <\/div>\n                                  <\/div>\n                                <\/div>\n                              <\/div>\n                            <\/div>\n                          <\/div>\n                          <div data-colibri-id=\"7366-c42\" class=\"h-text h-text-component style-6912 style-local-7366-c42 position-relative h-element\">\n                            <!---->\n                            <!---->\n                            <div class=\"\">\n                              <p>L3S-Mitglied Sascha Fahl forscht im Kompetenzbereich Human-Centered Cybersecurity, das Themen der IT-Sicherheit mit Forschungsmethoden der Psychologie und der Sozialwissenschaften kombiniert, um menschliche Faktoren, die in der IT-Sicherheit eine zentrale Rolle einnehmen, in die Erforschung von IT-Sicherheitsl\u00f6sungen einzubeziehen.<\/p>\n                            <\/div>\n                          <\/div>\n                        <\/div>\n                      <\/div>\n                    <\/div>\n                    <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-6913-outer style-local-7366-c43-outer\">\n                      <div data-colibri-id=\"7366-c43\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-2 h-px-md-2 h-px-2 v-inner-lg-2 v-inner-md-2 v-inner-2 style-6913 style-local-7366-c43 position-relative\">\n                        <!---->\n                        <!---->\n                        <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                          <!---->\n                          <div data-colibri-id=\"7366-c44\" class=\"d-block style-6914 style-local-7366-c44 position-relative h-element\">\n                            <!---->\n                            <div class=\"h-image__frame-container-outer\">\n                              <div class=\"h-image__frame-container\">\n                                <!---->\n                                <!---->\n                                <img decoding=\"async\" width=\"1920\" height=\"1097\" data-src=\"https:\/\/www.l3s.de\/wp-content\/uploads\/2022\/09\/team_2018_0.jpeg\" class=\"wp-image-7370 style-6914-image style-local-7366-c44-image lazyload\" alt=\"\" data-srcset=\"https:\/\/www.l3s.de\/wp-content\/uploads\/2022\/09\/team_2018_0.jpeg 1920w, https:\/\/www.l3s.de\/wp-content\/uploads\/2022\/09\/team_2018_0-300x171.jpeg 300w, https:\/\/www.l3s.de\/wp-content\/uploads\/2022\/09\/team_2018_0-1024x585.jpeg 1024w, https:\/\/www.l3s.de\/wp-content\/uploads\/2022\/09\/team_2018_0-768x439.jpeg 768w, https:\/\/www.l3s.de\/wp-content\/uploads\/2022\/09\/team_2018_0-1536x878.jpeg 1536w, https:\/\/www.l3s.de\/wp-content\/uploads\/2022\/09\/team_2018_0-2048x1170.jpeg 2048w, https:\/\/www.l3s.de\/wp-content\/uploads\/2022\/09\/team_2018_0-18x10.jpeg 18w\" data-sizes=\"(max-width: 1920px) 100vw, 1920px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1920px; --smush-placeholder-aspect-ratio: 1920\/1097;\" \/>\n                                <div class=\"h-image__frame h-hide-lg h-hide-md h-hide-sm style-6914-frameImage style-local-7366-c44-frameImage\"><\/div>\n                              <\/div>\n                            <\/div>\n                          <\/div>\n                          <div data-colibri-id=\"7366-c45\" class=\"h-row-container gutters-row-lg-0 gutters-row-md-0 gutters-row-0 gutters-row-v-lg-0 gutters-row-v-md-0 gutters-row-v-0 style-6915 style-local-7366-c45 position-relative\">\n                            <!---->\n                            <div class=\"h-row justify-content-lg-center justify-content-md-center justify-content-center align-items-lg-stretch align-items-md-stretch align-items-stretch gutters-col-lg-0 gutters-col-md-0 gutters-col-0 gutters-col-v-lg-0 gutters-col-v-md-0 gutters-col-v-0\">\n                              <!---->\n                              <div class=\"h-column h-column-container d-flex h-col-lg h-col-md h-col-auto style-6916-outer style-local-7366-c46-outer\">\n                                <div data-colibri-id=\"7366-c46\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-0 h-px-md-0 h-px-0 v-inner-lg-0 v-inner-md-0 v-inner-0 style-6916 style-local-7366-c46 position-relative\">\n                                  <!---->\n                                  <!---->\n                                  <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                                    <!---->\n                                    <div data-colibri-id=\"7366-c47\" class=\"h-global-transition-all h-heading style-6900 style-local-7366-c47 position-relative h-element\">\n                                      <!---->\n                                      <div class=\"h-heading__outer style-6900 style-local-7366-c47\">\n                                        <!---->\n                                        <!---->\n                                        <h6 class=\"\">Tutanota<\/h6>\n                                      <\/div>\n                                    <\/div>\n                                    <div data-colibri-id=\"7366-c48\" class=\"h-x-container style-6917 style-local-7366-c48 position-relative h-element\">\n                                      <!---->\n                                      <div class=\"h-x-container-inner style-dynamic-7366-c48-group style-6917-spacing style-local-7366-c48-spacing\"><span class=\"h-link__outer style-6911-outer style-local-7366-c49-outer d-inline-flex h-element\"><a h-use-smooth-scroll=\"true\" href=\"\/de\/www.tutanota.com\/\"  data-colibri-id=\"7366-c49\" class=\"d-flex w-100 align-items-center h-link style-6911 style-local-7366-c49 position-relative\"><!----><!----> <span>www.tutanota.com<\/span><\/a>\n                                        <\/span>\n                                      <\/div>\n                                    <\/div>\n                                  <\/div>\n                                <\/div>\n                              <\/div>\n                            <\/div>\n                          <\/div>\n                          <div data-colibri-id=\"7366-c50\" class=\"h-text h-text-component style-6912 style-local-7366-c50 position-relative h-element\">\n                            <!---->\n                            <!---->\n                            <div class=\"\">\n                              <p>Tutanota ist das weltweit erste vollst\u00e4ndig verschl\u00fcsselte Webmail-System. Alle Daten des Nutzers sind verschl\u00fcsselt und lassen sich automatisch im Browser (lokal) entschl\u00fcsseln. Durch die integrierte Ende-zu-Ende-Verschl\u00fcsselung kann der Nutzer Tutanota so einfach bedienen wie jedes herk\u00f6mmliche Webmailangebot - mit dem entscheidenden Unterschied, dass nur der Nutzer selbst Zugriff auf seine Daten hat. Der Betreiber des Services, die Tutao GmbH, sowie unbefugte Dritte (Hacker,  Geheimdienste, Wirtschaftsspione) k\u00f6nnen die in Tutanota gespeicherten E-Mails nicht entschl\u00fcsseln. Die Tutao GmbH wurde 2011 als Spin-off am Forschungszentrum L3S gegr\u00fcndet.<\/p>\n                            <\/div>\n                          <\/div>\n                        <\/div>\n                      <\/div>\n                    <\/div>\n                  <\/div>\n                <\/div>\n              <\/div>\n            <\/div>\n          <\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Foto: Adobe Stock Issue: 02\/2020 Innovationen Krisen Startups Post-quantum cryptography for e-mail E-mails are as confidential as postcards. To prevent third parties from reading the content, e-mails must be encrypted. But is encrypted e-mail communication permanently safe from prying eyes? Prof. Dr. Sascha Fahl from the L3S Research Centre at Leibniz Universit\u00e4t Hannover is sceptical: [&hellip;]<\/p>","protected":false},"author":7,"featured_media":7367,"parent":2750,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-templates\/full-width-page.php","meta":{"_acf_changed":false,"footnotes":""},"categories":[],"tags":[28,84],"class_list":["post-7366","page","type-page","status-publish","has-post-thumbnail","hentry","tag-binaire","tag-binaire-2020-02"],"acf":[],"aioseo_notices":[],"publishpress_future_action":{"enabled":false,"date":"2026-05-16 00:35:47","action":"category","newStatus":"draft","terms":[75],"taxonomy":"category","extraData":[]},"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/www.l3s.de\/de\/wp-json\/wp\/v2\/pages\/7366","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.l3s.de\/de\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.l3s.de\/de\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.l3s.de\/de\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.l3s.de\/de\/wp-json\/wp\/v2\/comments?post=7366"}],"version-history":[{"count":1,"href":"https:\/\/www.l3s.de\/de\/wp-json\/wp\/v2\/pages\/7366\/revisions"}],"predecessor-version":[{"id":39743,"href":"https:\/\/www.l3s.de\/de\/wp-json\/wp\/v2\/pages\/7366\/revisions\/39743"}],"up":[{"embeddable":true,"href":"https:\/\/www.l3s.de\/de\/wp-json\/wp\/v2\/pages\/2750"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.l3s.de\/de\/wp-json\/wp\/v2\/media\/7367"}],"wp:attachment":[{"href":"https:\/\/www.l3s.de\/de\/wp-json\/wp\/v2\/media?parent=7366"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.l3s.de\/de\/wp-json\/wp\/v2\/categories?post=7366"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.l3s.de\/de\/wp-json\/wp\/v2\/tags?post=7366"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}