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authorEelco Dolstra <e.dolstra@tudelft.nl>2005-01-14T16·04+0000
committerEelco Dolstra <e.dolstra@tudelft.nl>2005-01-14T16·04+0000
commitd58a11e019813902b6c4547ca61a127938b2cc20 (patch)
treeddaff27d1a3c0604ffac989867cf63fbf8ce94ff /src/nix-hash/nix-hash.cc
parent9530cc31700f68fd229eee69eabd2baa099f404a (diff)
* Shorten SHA-256 hashes used in store path name generation to 160
  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.)

Diffstat (limited to 'src/nix-hash/nix-hash.cc')
-rw-r--r--src/nix-hash/nix-hash.cc4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/nix-hash/nix-hash.cc b/src/nix-hash/nix-hash.cc
index 360e07960b0e..2cef7818e857 100644
--- a/src/nix-hash/nix-hash.cc
+++ b/src/nix-hash/nix-hash.cc
@@ -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)));
     }
 }