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| author | Alex Gaynor <alex.gaynor@gmail.com> | 2014-01-28 06:58:43 -0800 |
|---|---|---|
| committer | Alex Gaynor <alex.gaynor@gmail.com> | 2014-01-28 06:58:43 -0800 |
| commit | e19e89f3e29c057a8250f5f63dde444b495259f7 (patch) | |
| tree | b441277ae9e055f20e7daeafb67ea4f2eb0c6d81 /docs/hazmat/primitives | |
| parent | 5484f72a8f83b8488bd22cae98be7c0c3576991a (diff) | |
| download | cryptography-e19e89f3e29c057a8250f5f63dde444b495259f7.tar.gz cryptography-e19e89f3e29c057a8250f5f63dde444b495259f7.tar.bz2 cryptography-e19e89f3e29c057a8250f5f63dde444b495259f7.zip | |
Enforce that these may only be called once
Diffstat (limited to 'docs/hazmat/primitives')
| -rw-r--r-- | docs/hazmat/primitives/interfaces.rst | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/docs/hazmat/primitives/interfaces.rst b/docs/hazmat/primitives/interfaces.rst index ddccb773..12644f4c 100644 --- a/docs/hazmat/primitives/interfaces.rst +++ b/docs/hazmat/primitives/interfaces.rst @@ -216,6 +216,11 @@ Key Derivation Functions could be either random material, or a user supplied password. :return: The new key. + :raises cryptography.exceptions.AlreadyFinalized: This is raised when + :meth:`derive` or + :meth:`verify` is + called more than + once. This generates and returns a new key from the supplied key material. @@ -229,6 +234,11 @@ Key Derivation Functions :raises cryptography.exceptions.InvalidKey: This is raised when the derived key does not match the expected key. + :raises cryptography.exceptions.AlreadyFinalized: This is raised when + :meth:`derive` or + :meth:`verify` is + called more than + once. This checks whether deriving a new key from the supplied ``key_material`` generates the same key as the ``expected_key``, and |