Secure unsalted or fixed salt symmetric encryption?

RW rwmaillists at
Mon May 25 13:06:30 UTC 2009

On Sun, 24 May 2009 22:57:35 -0700
Kelly Jones <kelly.terry.jones at> wrote:

> and was surprised that doing this to identical files yielded different
> results. I then realized "openssl enc" randomly(?) chooses a salt if
> you don't supply one.
> I want my backups encrypted, but I also want identical files to
> encrypt identically. Thoughts?

Then don't use salt - just a fully randomized key.

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