Most of them do. Given a plain text and a key, most encryption algorithms will produce the same result every time. DES, Blowfish, Twofish, Skipjack are all like that.

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Posted on 2011-04-21

Hi everyone,

I am looking for a solution to the following problem...

I have 2 machines each with the same initial string value (aka key). On each of the systems I want to encrypt the strings on both machines in such a way that after the encryption their values are the same, and to be able to encrypt each of them over and over again with equivelent results on both machines.

So, I guess my fundamental question is - "given the same plain text starting point, does any specific encryption algorithm encrypt to the same value each time?"

Thanks very much for your help.

I am looking for a solution to the following problem...

I have 2 machines each with the same initial string value (aka key). On each of the systems I want to encrypt the strings on both machines in such a way that after the encryption their values are the same, and to be able to encrypt each of them over and over again with equivelent results on both machines.

So, I guess my fundamental question is - "given the same plain text starting point, does any specific encryption algorithm encrypt to the same value each time?"

Thanks very much for your help.

3 Comments

@mbmast: Thank you as well for your answer. We had originally looked at hashing specifically for that reason, however it left us hanging on a couple of other points that we needed to fulfill. I appreciate you taking the time to share your knowledge.

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