Perfect forward secrecy. Ephemeral Diffie-Hellman key exchange used in conjunction with the SKIP key distributions protocol provides PFS where required.
Perfect Forward Secrecy is an IPSec keying method that uses a brand new key for each new IPSec SA setup. The keys are created by new key exchanges, see Diffie-Hellman.
Perfect Forward Secrecy. With Perfect Forward Secrecy the exposure of one key permits access only to data protected by that key. When PFS is configured, the IKE daemon creates a new ISAKMP SA for each IPSec SA negotiation and performs a Diffie-Hellman exchange for each IPSec SA negotiation.
Pluggable File System The Pluggable File System (PFS) is a tool for attaching old applications to new storage systems. PFS presents new storage systems as file system entries.
See Perfect Forward Secrecy
perfect forward secrecy. In PFS, the key that is used to protect transmission of data is not used to derive additional keys. Also, the source of the key that is used to protect data transmission is never used to derive additional keys. PFS applies to authenticated key exchange only. See also Diffie-Hellman protocol.
Perfect Forward Secrecy. With Perfect Forward Secrecy the exposure of one key permits access only to data protected by that key. HP-UX IPSec supports PFS for keys and identities (the IKE daemon can be configured to create a new ISAKMP/MM SA for each IPSec/QM negotiation). HP-UX IPSec does not support PFS for keys only (the ISAKMP/MM SA is re-used for multiple IPSec/QM negotiations, with a new Diffie-Hellman key exchange for each IPSec/QM negotiation).
Perfect Forward Secrecy. Used to describe a condition where, even if a server's private authentication key is known by an attacker, the attacker cannot attack any session already established and shut down.
perfect forward secrecy. A cryptographic characteristic associated with a derived shared secret value. With PFS, if one key is compromised, previous and subsequent keys are not compromised, because subsequent keys are not derived from previous keys.
Perfect Forward Secrecy protocol. A condition derived from an encryption system that changes encryption keys often and ensures that no two sets of keys have any relation to each other. The advantage of PFS is that if one set of keys is compromised, only communications using those keys are at risk. An example of a system that uses PFS is Diffie-Hellman.
perfect forward secrecy. A cryptosystem in which, if one encryption key is compromised, only the data encrypted by that specific key is compromised. Some cryptosystems allow keys to be derived from previous keys, so that if the first key is compromised, an attacker might have enough information to figure out other keys and/or decrypt data encrypted using those keys. RFC 2409 describes PFS in detail.