Which encryption does Sdui use?

How is the data backed up between the servers and devices?

Updated at August 13th, 2021

Sdui uses the latest encryption protocols to ensure that data is transmitted securely between the devices and our servers. The connections run exclusively via HTTPS, additionally guaranteed by HSTS (according to RFC 6797).

We adjust these encryption algorithms at regular intervals and at the same time remove ciphers that can no longer guarantee sufficient security.

For a real-time evaluation, you can refer to the analyzes carried out below at any time.

Supported protocols:

TLS 1.3 (primary)
According to RFC 8446
TLS 1.2
According to RFC 5246
TLS 1 / 1.1 See section below.

Real-time evaluations:

api.sdui.de (main services) https://www.ssllabs.com/ssltest/analyze.html?d=api.sdui.de&hideResults=on
app.sdui.de (app) https://www.ssllabs.com/ssltest/analyze.html?d=app.sdui.de&hideResults=on
call.sdui.de (Sdui Meet) https://www.ssllabs.com/ssltest/analyze.html?d=call.sdui.de

Video and voice telephony with Sdui Meet:

In order to give all participants the opportunity to take part in a video conference on older desktop browsers and on older Android devices with Android 7.0 or lower, we now also consciously support old encryption standards such as TLSv1 and TLSv1.1 in addition to TLSv1.2 and TLSv1.3 . This only applies to the connections with https://call.sdui.de, via which our video conference runs.

External connections:

External connections and IDM systems also run exclusively via encrypted protocols. Outgoing connections come uniformly and exclusively via our proxy server.


We monitor device support for the latest encryption standards and reserve the right to change the encryption in our application if we deem it necessary.

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