[lug] [OT] sha1 algorithm, no salt?

[D. Stimits]

I'm looking at some NIST web pages on the sha1 one-way hash algorithm, 
and it seems odd that it looks like it does not use any kind of seed or 
salt value. Is this correct, that sha1 just takes data, and does not 
require a sepate seed? Reference:
  http://www.itl.nist.gov/fipspubs/fip180-1.htm
  http://csrc.nist.gov/publications/fips/fips180-1/fips180-1.pdf

Generating a salt/seed seems to be both a way of increasing the size of 
dictionary that a dictionary attack would require, as well as a weakness 
in some of the other algorithms used for passwords. Is this really what 
it looks like to me, no more salt?

D. Stimits, stimits AT attbi.com