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jiǎnyánzhī
au·then·ti·fi·zi̱e̱·ren VB with obj
PONS OpenDict

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Monolingual examples (not verified by PONS Editors)
Der öffentliche Schlüssel ermöglicht es jedem, Daten für den Besitzer des privaten Schlüssels zu verschlüsseln, dessen digitale Signaturen zu prüfen oder ihn zu authentifizieren.
de.wikipedia.org
Das zugehörige Verb lautet authentifizieren (englisch: authenticate), das für das Bezeugen der Echtheit von etwas steht.
de.wikipedia.org
In der Computerwelt werden Passwörter häufig zusammen mit einem Benutzernamen eingesetzt, um sich bei einem IT-System, zum Beispiel bei einer Website, zu authentifizieren.
de.wikipedia.org
Der Client entscheidet, über welche der vom Server angebotenen Authentifizierungsarten er sich am Server authentifizieren will.
de.wikipedia.org
Der Server authentifiziert sich hingegen nicht beim Client.
de.wikipedia.org

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"authentifizieren" in the monolingual German dictionaries

German Learner's Dictionary