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+.. hazmat::
+
+.. module:: cryptography.hazmat.primitives.asymmetric
+
+Signature Interfaces
+====================
+
+.. class:: AsymmetricSignatureContext
+
+    .. versionadded:: 0.2
+
+    .. method:: update(data)
+
+        :param bytes data: The data you want to sign.
+
+    .. method:: finalize()
+
+        :return bytes signature: The signature.
+
+
+.. class:: AsymmetricVerificationContext
+
+    .. versionadded:: 0.2
+
+    .. method:: update(data)
+
+        :param bytes data: The data you wish to verify using the signature.
+
+    .. method:: verify()
+
+        :raises cryptography.exceptions.InvalidSignature: If the signature does
+            not validate.
+