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authorGravatar Joey Hess <joey@kitenet.net>2011-11-04 15:21:45 -0400
committerGravatar Joey Hess <joey@kitenet.net>2011-11-04 15:51:01 -0400
commitef3457196ace3669ddfa93039f2d3c15baf54713 (patch)
tree391787de35537c71068cdd8e2fc882109a2c3b79 /Backend.hs
parent1089e85d48a0d3c455fc2f4139b82484b94b5bbe (diff)
use SHA256 by default
To get old behavior, add a .gitattributes containing: * annex.backend=WORM I feel that SHA256 is a better default for most people, as long as their systems are fast enough that checksumming their files isn't a problem. git-annex should default to preserving the integrity of data as well as git does. Checksum backends also work better with editing files via unlock/lock. I considered just using SHA1, but since that hash is believed to be somewhat near to being broken, and git-annex deals with large files which would be a perfect exploit medium, I decided to go to a SHA-2 hash. SHA512 is annoyingly long when displayed, and git-annex displays it in a few places (and notably it is shown in ls -l), so I picked the shorter hash. Considered SHA224 as it's even shorter, but feel it's a bit weird. I expect git-annex will use SHA-3 at some point in the future, but probably not soon! Note that systems without a sha256sum (or sha256) program will fall back to defaulting to SHA1.
Diffstat (limited to 'Backend.hs')
-rw-r--r--Backend.hs4
1 files changed, 2 insertions, 2 deletions
diff --git a/Backend.hs b/Backend.hs
index a09fc0e99..9a40e5459 100644
--- a/Backend.hs
+++ b/Backend.hs
@@ -26,12 +26,12 @@ import Types.Key
import qualified Types.Backend as B
-- When adding a new backend, import it here and add it to the list.
-import qualified Backend.WORM
import qualified Backend.SHA
+import qualified Backend.WORM
import qualified Backend.URL
list :: [Backend Annex]
-list = Backend.WORM.backends ++ Backend.SHA.backends ++ Backend.URL.backends
+list = Backend.SHA.backends ++ Backend.WORM.backends ++ Backend.URL.backends
{- List of backends in the order to try them when storing a new key. -}
orderedList :: Annex [Backend Annex]