Re: the key of DES

On Mon, 30 Sep 1996, Kim Yoonjeong wrote:

Hello, all ! With given a unknown DES system with 64 bits plaintext p, ciphertext c, can there be MORE THAN ONE keys ?

No.

If so, How is the probability (big or small)?

Sincerely, - Yoonejong

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Yoonjeong Kim Email: yjkim@ssrnet.snu.ac.kr Department of Computer Engineering Phone: +82-2-875-7726 (office) Seoul National University +82-2-872-9801 (home) Seoul 151-742 Korea Fax: +82-2-875-7726 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

--Deviant "If you eliminate the impossible, whatever remains, however improbable, must be true." -- Spock