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* Shorten SHA-256 hashes used in store path name generation to 160

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bits, then encode them in a radix-32 representation (using digits
  and letters except e, o, u, and t).  This produces store paths like
  /nix/store/4i0zb0z7f88mwghjirkz702a71dcfivn-aterm-2.3.1.  The nice
  thing about this is that the hash part of the file name is still 32
  characters, as before with MD5.

  (Of course, shortening SHA-256 to 160 bits makes it no better than
  SHA-160 in theory, but hopefully it's a bit more resistant to
  attacks; it's certainly a lot slower.)
This commit is contained in:
Eelco Dolstra 2005-01-14 16:04:03 +00:00
parent 9530cc3170
commit d58a11e019
7 changed files with 108 additions and 36 deletions
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4
src/nix-hash/nix-hash.cc
View file

@ -29,8 +29,8 @@ void run(Strings args)
else throw UsageError(format("unknown hash type `%1%'") % *i);
}
else
cout << format("%1%\n") % (string)
(flat ? hashFile(*i, ht) : hashPath(*i, ht));
cout << format("%1%\n") % printHash(
(flat ? hashFile(*i, ht) : hashPath(*i, ht)));
}
}