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Diffstat (limited to 'doc/devblog')
| -rw-r--r-- | doc/devblog/day_321__download_verification.mdwn | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/doc/devblog/day_321__download_verification.mdwn b/doc/devblog/day_321__download_verification.mdwn new file mode 100644 index 000000000..e8c944364 --- /dev/null +++ b/doc/devblog/day_321__download_verification.mdwn @@ -0,0 +1,13 @@ +While at the DerbyCon security conference, I got to thinking about +verifying objects that git-annex downloads from remotes. This can be +expensive for big files, so git-annex has never done it at download time, +instead deferring it to fsck time. But, that is a divergence from git, +which always verifies checksums of objects it receives. So, it violates +least surprise for git-annex to not verify checksums too. And this could +weaken security in some use cases. + +So, today I changed that. Now whenever git-annex accepts an object into +.git/annex/objects, it first verifies its checksum and size. I did add a +setting to disable that and get back the old behavior: `git config +annex.verify false`, and there's also a per-remote setting if you want to +verify content from some remotes but not others. |