Asymmetric-key algorithms use a combination of private and public keys while symmetric algorithms use only private ones, commonly referred to as secret keys.

The method is a symmetric key algorithm, so it has the usual problem of secure key distribution. All three key lengths have been approved by the NSA for secret information and the 192-bit and 256 ...

The file data is then encrypted with a symmetric algorithm called as DESX. Encrypting File System (EFS) The key used for these kinds of symmetric encryption is called as File Encryption Key (or FEK).

Symmetric key systems often rely on physical sharing of keys -- some financial institutions use actual couriers with portable storage devices -- to bootstrap.

ASC X9 has released a new standard, X9.24-3, that allows the use of the AES DUKPT algorithm to enhance security in retail financial transactions.

The US now has four post-quantum cryptographic algorithms it plans to make part of a new set of public-key cryptography standards by 2024.