GitHub user alasdairhodge opened a pull request:
https://github.com/apache/incubator-brooklyn/pull/687
Tweak PasswordHasher to avoid potentially misleading use of
ByteBuffer.array()
Using `ByteBuffer.array()` to convert a salted password to its constituent
bytes frequently results in an indeterminate number of spurious bytes to be
included, due to the fact that the buffer's raw backing array is usually larger
than the space consumed just by the values written to it. This causes
Brooklyn-generated hashes to deviate from the expected `sha256(salt +
password)` values.
Even though Brooklyn itself can generate hashes, it is desirable for the
algorithm to be sufficiently predictable to permit generation by simple
external mechanisms.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/alasdairhodge/incubator-brooklyn
password-hash-bytearray-fix
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-brooklyn/pull/687.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #687
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commit 599b239bd4cda0870acd36747189b1221c727e02
Author: Alasdair Hodge <[email protected]>
Date: 2015-06-11T12:03:53Z
Tweak PasswordHasher.sha256() to avoid potentially misleading use of
ByteBuffer.array().
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