diff --git a/data_files/Makefile b/data_files/Makefile
index 142d3ab09..ce161dcae 100644
--- a/data_files/Makefile
+++ b/data_files/Makefile
@@ -1839,6 +1839,19 @@ ec_prv.sec1.der: ec_prv.sec1.pem
 	$(OPENSSL) pkey -in $< -out $@ -outform DER
 all_final += ec_prv.sec1.der
 
+ec_256_prv.sec1.der:
+	$(OPENSSL) ecparam -name prime256v1 -genkey -outform DER -noout -out $@
+all_final += ec_256_prv.sec1.der
+
+ec_256_prv.sec1.pem:
+	$(OPENSSL) ec -in $< -out $@ -outform PEM
+all_final += ec_256_prv.sec1.pem
+
+ec_256_prv.sec1.comp.pem:
+	$(OPENSSL) ec -in $< -out $@ -outform PEM
+	$(OPENSSL) ec -in $< -conv_form compressed -outform PEM -out $@
+all_final += ec_256_prv.sec1.pem
+
 ec_256_long_prv.der: ec_256_long_prv.pem
 	$(OPENSSL) pkey -in $< -out $@ -outform DER
 all_final += ec_256_long_prv.der
diff --git a/data_files/ec_256_prv.sec1.comp.pem b/data_files/ec_256_prv.sec1.comp.pem
new file mode 100644
index 000000000..86bfed8d0
--- /dev/null
+++ b/data_files/ec_256_prv.sec1.comp.pem
@@ -0,0 +1,4 @@
+-----BEGIN EC PRIVATE KEY-----
+MFcCAQEEIHnN8ULAX3r6RNctg8/Hfll6p/QgJXJ6Y4XgsLeJbWV8oAoGCCqGSM49
+AwEHoSQDIgACCEh3UFIe6UZVzKk6zmLN74VtxjvoVZYxs4WckNUPGSY=
+-----END EC PRIVATE KEY-----
diff --git a/data_files/ec_256_prv.sec1.der b/data_files/ec_256_prv.sec1.der
new file mode 100644
index 000000000..e1da3985b
Binary files /dev/null and b/data_files/ec_256_prv.sec1.der differ
diff --git a/data_files/ec_256_prv.sec1.pem b/data_files/ec_256_prv.sec1.pem
new file mode 100644
index 000000000..69b02225a
--- /dev/null
+++ b/data_files/ec_256_prv.sec1.pem
@@ -0,0 +1,5 @@
+-----BEGIN EC PRIVATE KEY-----
+MHcCAQEEIHnN8ULAX3r6RNctg8/Hfll6p/QgJXJ6Y4XgsLeJbWV8oAoGCCqGSM49
+AwEHoUQDQgAECEh3UFIe6UZVzKk6zmLN74VtxjvoVZYxs4WckNUPGSaYbGCf7xGr
+DKjYXOp+5gSGxtCLBAltIFHd4ctGTyFaWg==
+-----END EC PRIVATE KEY-----