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| author | Alex Gaynor <alex.gaynor@gmail.com> | 2016-11-05 22:08:21 -0400 |
|---|---|---|
| committer | Paul Kehrer <paul.l.kehrer@gmail.com> | 2016-11-06 10:08:21 +0800 |
| commit | b924696b2e8731f39696584d12cceeb3aeb2d874 (patch) | |
| tree | c5daebaa75b7eee323cd29443f8f44e03adc5522 /src | |
| parent | 21ac453a1afe01e3f47b7daad9af379725392162 (diff) | |
| download | cryptography-b924696b2e8731f39696584d12cceeb3aeb2d874.tar.gz cryptography-b924696b2e8731f39696584d12cceeb3aeb2d874.tar.bz2 cryptography-b924696b2e8731f39696584d12cceeb3aeb2d874.zip | |
Fixes #3211 -- fixed hkdf's output with short length (#3215)
Diffstat (limited to 'src')
| -rw-r--r-- | src/cryptography/hazmat/primitives/kdf/hkdf.py | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/cryptography/hazmat/primitives/kdf/hkdf.py b/src/cryptography/hazmat/primitives/kdf/hkdf.py index f738bbdc..82ed9b1c 100644 --- a/src/cryptography/hazmat/primitives/kdf/hkdf.py +++ b/src/cryptography/hazmat/primitives/kdf/hkdf.py @@ -91,7 +91,7 @@ class HKDFExpand(object): output = [b""] counter = 1 - while (self._algorithm.digest_size // 8) * len(output) < self._length: + while self._algorithm.digest_size * (len(output) - 1) < self._length: h = hmac.HMAC(key_material, self._algorithm, backend=self._backend) h.update(output[-1]) h.update(self._info) |