It allowed hackers to steal digital keys that could be used to take over people's accounts.
这导致黑客可以利用窃取的数字钥匙来掌握人们的账号。
TED演讲（音频版） 2021年1月合集
Is it a physical key, is it a digital key?
是实体钥匙还是数字钥匙？
VOA常速英语_美洲
As a digital key, I can click on the resident app main entry door and just like this you saw the door unlocked.
有了数字钥匙，就可以点击居民应用程序的主入口门，就像这样你看到门打开了。
英语百科
Digital signature
A digital signature is a mathematical scheme for demonstrating the authenticity of a digital message or documents. A valid digital signature gives a recipient reason to believe that the message was created by a known sender, that the sender cannot deny having sent the message (authentication and non-repudiation), and that the message was not altered in transit (integrity).