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 result of this requirement is a much larger key size than symmetric-key algorithms for an equivalent amount of security. As an example, 512-bit RSA is considered to be about the same level of ...

Symmetric algorithms convert plain-text data into an unreadable ciphertext using a single key or password; they decrypt the ciphertext using the same key.

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.

While Shor's algorithm could be used to target asymmetric key cryptography, Grover's could impact symmetric key cryptography.

Key distribution mechanisms and the transmissions of symmetric encrypted data both create vital points of attack for malicious actors who are looking to steal data.

Symmetric encryption utilizes a single key which both communicating parties use for encryption and decryption. However, both devices need to have the key before the communication begins.

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

Symmetric algorithms essentially depend on jumbling up the plaintext in complex ways and doing so lots of times; the key is what specifies the exact jumbling up pattern that was used.