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-rw-r--r--docs/hazmat/backends/interfaces.rst36
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diff --git a/docs/hazmat/backends/interfaces.rst b/docs/hazmat/backends/interfaces.rst
index 2f63f3e0..6833f221 100644
--- a/docs/hazmat/backends/interfaces.rst
+++ b/docs/hazmat/backends/interfaces.rst
@@ -345,6 +345,42 @@ A specific ``backend`` may provide one or more of these interfaces.
1.0.0 and the key size is larger than 1024; older OpenSSL versions
do not support keys larger than 1024 bits.
+ .. method:: create_dsa_verification_ctx(public_key, signature, algorithm)
+
+ :param public_key: An instance of a
+ :class:`~cryptography.hazmat.primitives.interfaces.DSAPublicKey`
+ provider.
+
+ :param bytes signature: The signature to verify. DER encoded as
+ specified in :rfc:`6979`.
+
+ :param algorithm: An instance of a
+ :class:`~cryptography.hazmat.primitives.interfaces.HashAlgorithm`
+ provider.
+
+ :returns:
+ :class:`~cryptography.hazmat.primitives.interfaces.AsymmetricVerificationContext`
+
+ .. method:: dsa_hash_supported(algorithm):
+
+ :param algorithm: An instance of a
+ :class:`~cryptography.hazmat.primitives.interfaces.HashAlgorithm`
+ provider.
+
+ :returns: ``True`` if the specified ``algorithm`` is supported by this
+ backend, otherwise ``False``.
+
+ .. method:: dsa_parameters_supported(p, q, g):
+
+ :param int p: The p value of a DSA key.
+
+ :param int q: The q value of a DSA key.
+
+ :param int g: The g value of a DSA key.
+
+ :returns: ``True`` if the given values of ``p``, ``q``, and ``g`` are
+ supported by this backend, otherwise ``False``.
+
.. class:: CMACBackend