Merge pull request #870 from skeuomorf/dsa-public-key

Add DSA public key api, docs and tests

1 files changed, 22 insertions, 0 deletions

diff --git a/docs/hazmat/primitives/asymmetric/dsa.rst b/docs/hazmat/primitives/asymmetric/dsa.rst
index c9fd2f55..e93bd447 100644
--- a/docs/hazmat/primitives/asymmetric/dsa.rst
+++ b/docs/hazmat/primitives/asymmetric/dsa.rst
@@ -24,6 +24,28 @@ DSA
                         not match the bounds specified in `FIPS 186-4`_.
 
 
+.. class:: DSAPublicKey(modulus, subgroup_order, generator, y)
+
+    .. versionadded:: 0.4
+
+    A DSA public key is required for verifying messages.
+
+    Normally you do not need to directly construct public keys because you'll
+    be loading them from a file, generating them automatically or receiving
+    them from a 3rd party.
+
+    This class conforms to the
+    :class:`~cryptography.hazmat.primitives.interfaces.DSAPublicKey`
+    interface.
+
+    :raises TypeError: This is raised when the arguments are not all integers.
+
+    :raises ValueError: This is raised when the values of ``modulus``,
+                        ``subgroup_order``,``generator``, or ``y`` 
+                        do not match the bounds specified in `FIPS 186-4`_.
+
+
 .. _`DSA`: https://en.wikipedia.org/wiki/Digital_Signature_Algorithm 
 .. _`public-key`: https://en.wikipedia.org/wiki/Public-key_cryptography
 .. _`FIPS 186-4`: http://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.186-4.pdf 
+