diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/cryptography/hazmat/primitives/kdf/scrypt.py | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/cryptography/hazmat/primitives/kdf/scrypt.py b/src/cryptography/hazmat/primitives/kdf/scrypt.py index 09181d97..20935409 100644 --- a/src/cryptography/hazmat/primitives/kdf/scrypt.py +++ b/src/cryptography/hazmat/primitives/kdf/scrypt.py @@ -25,6 +25,16 @@ class Scrypt(object): self._length = length if not isinstance(salt, bytes): raise TypeError("salt must be bytes.") + + if n < 2 or (n & (n - 1)) != 0: + raise ValueError("n must be greater than 1 and be a power of 2.") + + if r < 1: + raise ValueError("r must be greater than or equal to 1.") + + if p < 1: + raise ValueError("p must be greater than or equal to 1.") + self._used = False self._salt = salt self._n = n |