What is KCV (Key Check Value) in 3DES used for?

Hi Friends..
I want to know what is KCV (Key Check Value) used for?..
i found that 3DES operation (2Keys length or 3Keys length) sometimes needs KCV (Key Check Value)..
As far as i know the KCV itself computed as Follows :
3DES(Keys, IV(all zeroes), Data (8byte zeroes)
Please correct me if i'm wrong..
Thanks

Leonardo Carreira wrote:
sabre150 wrote:
Leonardo Carreira wrote:
Could you suggest me what is the good book for "learning the concept of cryptography"?..Errr ... I thought I had done that!Yes you're right, you had suggested the book for me..
And i don't found the KCV (Key Check Value) usage in the book..
So, i ask this question, sorry if my question is sounds boring to you, sorry for this inconvenience.. :(
thanksKCV has at least two different meanings. I suspect you are interested in the one outlined in http://www.cryptographyworld.com/key.htm.

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