Symmetricom S100 - Manual (Page 138)

130 S100 User Guide – Rev. D – June 2005
SyncServer S100
Online validation
A way of validating a key each time before it is used to verify that it has not expired or been
revoked.
OSI
Operations System Interface
Out-of-band Authentication
When authentication is performed using relatively insecure methods, such as over the
telephone, it is called out-of-band authentication. In-band authentication, which uses PKI, is
preferred.
See also: In-band Authentication
PCI
Peripheral Component Interconnect, a local bus that supports high-speed connection with
peripherals. It plugs into a PCI slot on the motherboard.
PKCS
Public Key Cryptography Standards. These standards allow compatibility among different
cryptographic products.
PKI
Public Key Infrastructure. The PKI includes the Certificate Authority (CA) , key directory, and
management. Other components such as key recovery, and registration, may be included.
The result is a form of cryptography in which each user has a
Public Key and a Private Key .
Messages are sent encrypted with the receiver's public key; the receiver decrypts them using
the private key.
PKI Certificate
See Digital Certificates
PKIX
Extended Public Key Infrastructure, or PKI with additional features approved by the IETF.
Private Key
This is a secret key, known to only one of the parties involved in a transaction.
PSTN
Public Switched Telephone Network, a voice and data communications service for the
general public that uses switched lines.
Public Key
Messages are sent encrypted with the recipient's public key, which is known to others; the
recipient decrypts them using their private key.