Add Secp256R1 test keys and CRTs
diff --git a/tests/data_files/cli3.csr b/tests/data_files/cli3.csr
new file mode 100644
index 0000000..501bc30
--- /dev/null
+++ b/tests/data_files/cli3.csr
@@ -0,0 +1,8 @@
+-----BEGIN CERTIFICATE REQUEST-----
+MIH6MIGfAgEAMD0xHDAaBgNVBAMME1Rlc3QgQ1JUMiBTZWNwMjU2cjExEDAOBgNV
+BAoMB01iZWRUTFMxCzAJBgNVBAYTAlVLMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcD
+QgAEEm+TJ4LBB85IBjWNcNIodr2L06CZqLbVClmHuxPqiZafsAZDl0lqgL6cCigF
+/ML2EqFyKW+Oext3uAmNkemj6aAAMAwGCCqGSM49BAMCBQADSAAwRQIgPbHQgHvW
+f/gN4jV+GHIkQGhI4OAa7d82/dVzxXbYxnACIQCoqAs7agETcK6jp7A36pnKT9Jc
+Lck5I3roXwDPXMtzSg==
+-----END CERTIFICATE REQUEST-----