This is also known as public-key cryptography, and unlike symmetric encryption, the sender and recipient don’t need to share the key. Asymmetric cryptography: The sender uses a public key to encrypt the message, then the recipient uses a private key (that only they know) to decrypt it.This means the sender needs to share the key with the recipient so they can decrypt the message. Symmetric cryptography: The sender and the recipient use a single, private key to encrypt and decrypt the message.So how do senders and recipients use these keys to encrypt and decrypt messages? There are 2 ways: And unlike the simple cryptographic keys that people can create, email encryption services generate keys using complex algorithms that scramble the data beyond human recognition. How does email encryption work?Įmail encryption uses cryptographic keys or strings of characters that replace the original data to appear random. Anyone else who tries to intercept the message will only be able to see the ciphertext-thus, protecting the contents of the email. Once an email is encrypted, only an authorized user (the recipient) can decrypt it and view the original message. What is email encryption?įirst and foremost, email encryption scrambles the content of an email, converting it into an unreadable format called ciphertext. Read on to find the answers to these and other common questions about encryption and learn how Twilio SendGrid secures emails in transit. Now, you probably have a flurry of questions on this topic, like: One of the main lines of defense against this attack is email encryption, a widely used way to secure the information sent over email. But this also makes email susceptible to cybercriminals who attempt to access sensitive data by intercepting emails in transit or hacking into email servers. Email is one of the most convenient communication channels for businesses and individuals, thanks to its accessibility.
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