Commit graph

7 commits

Author SHA1 Message Date
Tonis Tiigi
f015982f0f Validate digest length on parsing
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
2015-12-02 16:04:06 -08:00
Stephen J Day
7835d261d8 Add generic content digest tool
Previously a useful gist, this changeset polishes the original tarsum tool into
a utility that can be used to calculate content digests. Any algorithm from the
digest package is supported with additional support from tarsum.

This tool is very useful for quickly checking backend digests and verifying
correctness.

Signed-off-by: Stephen J Day <stephen.day@docker.com>
2015-08-20 14:55:34 -07:00
Stephen J Day
44da954565 Refactor specification of supported digests
To make the definition of supported digests more clear, we have refactored the
digest package to have a special Algorithm type. This represents the digest's
prefix and we associated various supported hash implementations through
function calls.

Signed-off-by: Stephen J Day <stephen.day@docker.com>
2015-05-22 18:08:23 -07:00
Stephen J Day
eee6cad2cf Remove digest package's dependency on external sha implementation
The change relies on a refactor of the upstream resumable sha256/sha512 package
that opts to register implementations with the standard library. This allows
the resumable support to be detected where it matters, avoiding unnecessary and
complex code. It also ensures that consumers of the digest package don't need
to depend on the forked sha implementations.

We also get an optimization with this change. If the size of data written to a
digester is the same as the file size, we check to see if the digest has been
verified. This works if the blob is written and committed in a single request.

Signed-off-by: Stephen J Day <stephen.day@docker.com>
2015-05-20 23:44:08 -07:00
Andy Goldstein
7fdd395653 Use a build flag to disable resumable digests.
Signed-off-by: Andy Goldstein <agoldste@redhat.com>
2015-04-16 01:19:57 +00:00
Josh Hawn
60b6748c95 Use resumable hash in digest package
Vendored resumable sha256/sha512 library. Digest package new exports a
resumable variant of the Digester.

Docker-DCO-1.1-Signed-off-by: Josh Hawn <josh.hawn@docker.com> (github: jlhawn)
2015-04-01 17:11:47 -07:00
David Lawrence
b777e389b9 fixing up tests to work with for non-tarsum future
Signed-off-by: David Lawrence <david.lawrence@docker.com> (github: endophage)
2015-03-06 14:54:23 -08:00