In the world of online services, this is not viable option as the physical distance between each party may be big and the implementation must be quick. In earlier implementations, this was achieved on a personal meeting. To establish an encrypted communication using symmetric cryptography one party must generate the key and send to the other. Symmetric cryptography remains widely used nowadays but it has some downsides. The key is used to encrypt a message by one party and to decrypt it by the other, hence the name symmetric. When the exchanged data includes sensible information (ex: users personal information, company internal report) it is important to encrypt it to provide an additional layer of protection in the event of a leak or cyber attack.įor many years, cryptography was achieved using a shared key between two parties (sender and receiver). If you work with modern backend development it is inevitable that one day you’ll integrate your application with external services.
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