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Perfect forward secrecy explained: Beginner’s guide | NordVPN
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📱 Find out what is perfect forward secrecy and how it works 🕵🏼♀️
🚀 Enhance your online safety with NordVPN!
What is perfect forward secrecy? How does perfect forward secrecy work? It’s an encryption process put in place in order to ensure a minimal data loss if a breach happens. Yet it has imperfections. Get to know the main facts about forward secrecy in this easy explainer..
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Contents:
00:00 Intro
00:16 What is perfect forward secrecy
01:03 The flaws of forward secrecy
01:20 Conclusion
***
What is perfect forward secrecy?
Perfect forward secrecy (or PFS) is a process in which an encryption system regularly changes its encryption keys, so only a tiny bit of data can be compromised in any single breach. The system switches keys after every message, call, or page load. This means that an interceptor can only get hold of that one operation or message, but not all the other data, as it is encrypted by different sets of keys.
How does perfect forward secrecy work?
Let’s say two people are chatting via a secure messaging app that uses PFS. The app uses public and private keys, which encrypt their communication and identifies them as intended senders and receivers. It uses these keys only to help them to identify one another.
Then a key exchange algorithm creates an ephemeral key, which encrypts every single message. When one person send a message to another, it will be encrypted with that key. The receiver decrypts it using the same key. Similar process is repeated in every exchange of messages. Each message has new session keys.
Now even if a hacker intercepts this conversation, they’ll only be able to see a single message rather than the whole conversation.
***
📌OUR SOCIAL MEDIA 📱
Check out NordVPN’s German and French channels ⏯️ 🌐
🇫🇷 @NordVPNenfrancais
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#PFS #ForwardSecrecy #PerfectForwardSecrecy
🚀 Enhance your online safety with NordVPN!
What is perfect forward secrecy? How does perfect forward secrecy work? It’s an encryption process put in place in order to ensure a minimal data loss if a breach happens. Yet it has imperfections. Get to know the main facts about forward secrecy in this easy explainer..
► RECOMMENDED VIDEOS ►
Contents:
00:00 Intro
00:16 What is perfect forward secrecy
01:03 The flaws of forward secrecy
01:20 Conclusion
***
What is perfect forward secrecy?
Perfect forward secrecy (or PFS) is a process in which an encryption system regularly changes its encryption keys, so only a tiny bit of data can be compromised in any single breach. The system switches keys after every message, call, or page load. This means that an interceptor can only get hold of that one operation or message, but not all the other data, as it is encrypted by different sets of keys.
How does perfect forward secrecy work?
Let’s say two people are chatting via a secure messaging app that uses PFS. The app uses public and private keys, which encrypt their communication and identifies them as intended senders and receivers. It uses these keys only to help them to identify one another.
Then a key exchange algorithm creates an ephemeral key, which encrypts every single message. When one person send a message to another, it will be encrypted with that key. The receiver decrypts it using the same key. Similar process is repeated in every exchange of messages. Each message has new session keys.
Now even if a hacker intercepts this conversation, they’ll only be able to see a single message rather than the whole conversation.
***
📌OUR SOCIAL MEDIA 📱
Check out NordVPN’s German and French channels ⏯️ 🌐
🇫🇷 @NordVPNenfrancais
🇩🇪 @NordVPNaufDeutsch
#PFS #ForwardSecrecy #PerfectForwardSecrecy
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