- Added extra X509 regression and coverage tests

diff --git a/tests/data_files/crl_sha224.pem b/tests/data_files/crl_sha224.pem
new file mode 100644
index 0000000..e678cc1
--- /dev/null
+++ b/tests/data_files/crl_sha224.pem
@@ -0,0 +1,11 @@
+-----BEGIN X509 CRL-----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=
+-----END X509 CRL-----