Add OpenSSL PEM vector docs
diff --git a/docs/development/test-vectors.rst b/docs/development/test-vectors.rst
index f47f08d..3f3c8b0 100644
--- a/docs/development/test-vectors.rst
+++ b/docs/development/test-vectors.rst
@@ -15,6 +15,8 @@
* RSA PKCS1 from the RSA FTP site (ftp://ftp.rsasecurity.com/pub/pkcs/pkcs-1/
and ftp://ftp.rsa.com/pub/rsalabs/tmp/).
+* OpenSSL PEM serialization vectors from the `OpenSSL`_ and `GnuTLS`_ test
+ suites.
Hashes
~~~~~~
@@ -100,3 +102,5 @@
.. _`Whirlpool website`: http://www.larc.usp.br/~pbarreto/WhirlpoolPage.html
.. _`Specification repository`: https://github.com/fernet/spec
.. _`errata`: http://www.rfc-editor.org/errata_search.php?rfc=6238
+.. _`OpenSSL`: https://www.openssl.org/
+.. _`GnuTLS`: http://www.gnutls.org/