Add parsing/printing for new X.509 keyUsage flags
diff --git a/tests/data_files/Readme-x509.txt b/tests/data_files/Readme-x509.txt
index b68ae51..2cf0c66 100644
--- a/tests/data_files/Readme-x509.txt
+++ b/tests/data_files/Readme-x509.txt
@@ -23,6 +23,7 @@
- test-ca-v1.crt: v1 "CA", signs
server1-v1.crt: v1 "intermediate CA", signs
server2-v1*.crt: EE cert (without of with chain in same file)
+- keyUsage.decipherOnly.crt: has the decipherOnly keyUsage bit set
End-entity certificates
-----------------------
diff --git a/tests/data_files/keyUsage.decipherOnly.crt b/tests/data_files/keyUsage.decipherOnly.crt
new file mode 100644
index 0000000..7c37978
--- /dev/null
+++ b/tests/data_files/keyUsage.decipherOnly.crt
@@ -0,0 +1,14 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----