Answer Posted / ramkumar
A user can generate his or her own key pair, or, depending
on local policy, a security officer may generate key pairs
for all users. There are tradeoffs between the two
approaches. In the former, the user needs some way to trust
his or her copy of the key generation software, and in the
latter, the user must trust the security officer and the
private key must be transferred securely to the user.
Typically, each node on a network should be capable of
local key generation. Secret-key authentication systems,
such as Kerberos, often do not allow local key generation,
but instead use a central server to generate keys.
Once a key has been generated, the user must register his
or her public key with some central administration, called
a Certifying Authority (CA). The CA returns to the user a
certificate attesting to the validity of the user's public
key along with other information (see Questions 4.1.3.10-
4.1.3.12). If a security officer generates the key pair,
then the security officer can request the certificate for
the user. Most users should not obtain more than one
certificate for the same key, in order to simplify various
bookkeeping tasks associated with the key.
Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
How to I prevent other users from using Kryptel (Silver Key)?
What is are "proprietary" and "public" cryptographic algorithms?
whats cryptanalysis?
What is key management ?
What is nonlinear cryptography?
What is the difference between a message authentication code (MAC) and a one-way hash?
What is the mceliece cryptosystem?
What is meant by 1024, 2048, 5096 bit encryption?
What is public-key cryptography ?
What are the advantages of public-key cryptography compared with secret-key cryptography?
How to remove the Kryptel (Silver Key) icon from the desktop?
Actual role of cryptography is data security .Explain with real world example?
What is the rabin signature scheme?
How to change the encrypted file icon?
What is the elgamal cryptosystem?