diff --git a/tests/data_files/pkcs7-rsa-sha256-1.key b/tests/data_files/pkcs7-rsa-sha256-1.key
new file mode 100644
index 0000000..0c7d37d
--- /dev/null
+++ b/tests/data_files/pkcs7-rsa-sha256-1.key
@@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----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+-----END PRIVATE KEY-----