Add Secp256R1 test keys and CRTs
diff --git a/tests/data_files/test-ca3.csr b/tests/data_files/test-ca3.csr
new file mode 100644
index 0000000..b79b655
--- /dev/null
+++ b/tests/data_files/test-ca3.csr
@@ -0,0 +1,8 @@
+-----BEGIN CERTIFICATE REQUEST-----
+MIH5MIGdAgEAMDsxGjAYBgNVBAMMEVRlc3QgQ0EgU2VjcDI1NnIxMRAwDgYDVQQK
+DAdNYmVkVExTMQswCQYDVQQGEwJVSzBZMBMGByqGSM49AgEGCCqGSM49AwEHA0IA
+BLZIHgilzw/iCx1r09kyZsZfarzztX4y1km0S5MxrsFB67NjUhXE6/YY3W38oxeY
+4eIvEb516BOR/g3e3OL7Q8WgADAMBggqhkjOPQQDAgUAA0kAMEYCIQD55eBPVcht
+2trIK3YYWKJbGXIoKF0930KQh8eFAcFD8AIhAI2exrMqoNF8JDoUS2m3Vv0ZFYRG
+982wT8Ok59LiWCOX
+-----END CERTIFICATE REQUEST-----