![]() With a user’s public key, it is possible to generate an encrypted email that cannot be read by an eavesdropper. For example, Check Point’s public key for reporting security issues via secure email is located here. With asymmetric cryptography, the key used for encryption is public, so it can be sent over insecure email or posted on a website. If this key is sent by email, the email would have to be unencrypted for the recipient to read it, so an eavesdropper could intercept this email and use the enclosed key to decrypt the encrypted email.Īs a result, many email encryption schemes use asymmetric cryptographic algorithms. While it is possible to use symmetric cryptography for email encryption, this requires the ability to securely share a secret key with the intended recipient of the message. ![]() Symmetric encryption uses the same secret key for encryption and decryption, while asymmetric or public key cryptography uses a public key for encryption and a related private key for decryption. ![]() Data encryption can be performed using symmetric or asymmetric encryption algorithms.
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