Which technology is used to facilitate encryption for the SSH protocol?

The Secure Shell (SSH) protocol uses asymmetrical encryption with the use of public and private key pairs. This not only provides encryption, but it also provides authentication of clients. Symmetrical encryption means that the same key that encrypts the information also decrypts it, and this method is not commonly used with any remote technologies. Code block ciphers (CBCs) are used with wireless technology to encrypt the data several times. At-rest encryption is a term used to describe the protection of data stored and not data in transit.