![]() ![]() ![]() These certificates are issued and countersigned by certificate authorities (CAs), of which hundreds exist worldwide. The certificate is bound to a given domain name, like, and can’t be used at any other domain. SSL/TLS relies on digital certificates that provide the cryptographic information for a server to send a session key safely to a client. How can you start this dance if you can’t be sure you’re asking the right partner to participate? The trick devised not long after Web browsing hit the mainstream in the mid-1990s was known as SSL (Secure Sockets Layer) it’s since been updated, and has a new name, TLS (Transport Layer Security). ![]() ![]() If you’re exchanging information over the Internet, you have to assume all communications could be monitored by criminals, trolls, and governments. ![]()
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