update docs and changelog for prehashed support (#3268)
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index c9ea7fa..c99fcbd 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -47,7 +47,7 @@
a single-valued RDN.
* Added
:func:`~cryptography.hazmat.primitives.asymmetric.ec.derive_private_key`.
-* Added support for signing and verifying RSA signatures with
+* Added support for signing and verifying RSA, DSA, and ECDSA signatures with
:class:`~cryptography.hazmat.primitives.asymmetric.utils.Prehashed`
digests.
diff --git a/docs/hazmat/primitives/asymmetric/utils.rst b/docs/hazmat/primitives/asymmetric/utils.rst
index ab49e55..f46acb2 100644
--- a/docs/hazmat/primitives/asymmetric/utils.rst
+++ b/docs/hazmat/primitives/asymmetric/utils.rst
@@ -33,11 +33,23 @@
.. versionadded:: 1.6
- ``Prehashed`` can be passed as the ``algorithm`` in
+ ``Prehashed`` can be passed as the ``algorithm`` in the RSA
:meth:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKey.sign`
- or
+ and
:meth:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPublicKey.verify`
- if the data to be signed or verified has been hashed beforehand.
+ as well as DSA
+ :meth:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateKey.sign`
+ and
+ :meth:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPublicKey.verify`
+ methods.
+
+ For elliptic curves it can be passed as the ``algorithm`` in
+ :class:`~cryptography.hazmat.primitives.asymmetric.ec.ECDSA` and then used
+ with
+ :meth:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePrivateKey.sign`
+ and
+ :meth:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicKey.verify`
+ .
:param algorithm: An instance of
:class:`~cryptography.hazmat.primitives.hashes.HashAlgorithm`.