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You have completed Introduction to Data Security!
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Let's talk more about how to secure communications between two or more users.
Open Whisper Systems libraries for C, Java, and JavaScript.
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But there's also instant messaging like
Hangouts, social chat systems like Discord
0:00
and Slack, and more modern SMS
platforms like Signal and WhatsApp.
0:02
Aside from using TLS and SSL to ensure
a secure connection between the client and
0:06
the server, you should also consider
including end-to-end encryption and
0:10
forward secrecy.
0:14
Let's talk a bit about
how that would work.
0:15
In traditional cryptography discussions,
you'll usually encounter two users,
0:18
Alice and Bob.
0:22
We'll stick with those.
0:23
So Alice and
Bob are both using Treehouse Messenger.
0:24
When they signed up, the service
created for each of them a private and
0:27
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