diff --git a/tests/data_files/Makefile b/tests/data_files/Makefile
index d1af18c..4222fb8 100644
--- a/tests/data_files/Makefile
+++ b/tests/data_files/Makefile
@@ -45,18 +45,32 @@
 
 test-ca.crt: $(test_ca_key_file_rsa) test-ca.req.sha256
 	$(MBEDTLS_CERT_WRITE) is_ca=1 serial=3 request_file=test-ca.req.sha256 selfsign=1 issuer_name="C=NL,O=PolarSSL,CN=PolarSSL Test CA" issuer_key=$(test_ca_key_file_rsa) issuer_pwd=$(test_ca_pwd_rsa) not_before=20110212144400 not_after=20210212144400 md=SHA1 version=3 output_file=$@
-test-ca.der: test-ca.crt
+all_final += test-ca.crt
+
+test-ca.crt.der: test-ca.crt
 	$(OPENSSL) x509 -inform PEM -in $< -outform DER -out $@
-all_final += test-ca.crt test-ca.der
+all_final += test-ca.crt.der
+
+test-ca.key.der: $(test_ca_key_file_rsa)
+	$(OPENSSL) pkey -in $< -out $@ -inform PEM -outform DER -passin "pass:$(test_ca_pwd_rsa)"
+all_final += test-ca.key.der
 
 test-ca-sha1.crt: $(test_ca_key_file_rsa) test-ca.req.sha256
 	$(MBEDTLS_CERT_WRITE) is_ca=1 serial=3 request_file=test-ca.req.sha256 selfsign=1 issuer_name="C=NL,O=PolarSSL,CN=PolarSSL Test CA" issuer_key=$(test_ca_key_file_rsa) issuer_pwd=$(test_ca_pwd_rsa) not_before=20110212144400 not_after=20210212144400 md=SHA1 version=3 output_file=$@
 all_final += test-ca-sha1.crt
 
+test-ca-sha1.crt.der: test-ca-sha1.crt
+	$(OPENSSL) x509 -in $< -out $@ -inform PEM -outform DER
+all_final += test-ca-sha1.crt.der
+
 test-ca-sha256.crt: $(test_ca_key_file_rsa) test-ca.req.sha256
 	$(MBEDTLS_CERT_WRITE) is_ca=1 serial=3 request_file=test-ca.req.sha256 selfsign=1 issuer_name="C=NL,O=PolarSSL,CN=PolarSSL Test CA" issuer_key=$(test_ca_key_file_rsa) issuer_pwd=$(test_ca_pwd_rsa) not_before=20110212144400 not_after=20210212144400 md=SHA256 version=3 output_file=$@
 all_final += test-ca-sha256.crt
 
+test-ca-sha256.crt.der: test-ca-sha256.crt
+	$(OPENSSL) x509 -in $< -out $@ -inform PEM -outform DER
+all_final += test-ca-sha256.crt.der
+
 test_ca_key_file_rsa_alt = test-ca-alt.key
 
 $(test_ca_key_file_rsa_alt):
@@ -113,6 +127,14 @@
 	$(MBEDTLS_CERT_REQ) output_file=$@ filename=$(test_ca_key_file_ec) subject_name="C=NL, O=PolarSSL, CN=Polarssl Test EC CA" md=SHA256
 all_intermediate += test-ca.req_ec.sha256
 
+test-ca2.crt.der: $(test_ca_crt_file_ec)
+	$(OPENSSL) x509 -in $(test_ca_crt_file_ec) -out $@ -inform PEM -outform DER
+all_final += test-ca2.crt.der
+
+test-ca2.key.der: $(test_ca_key_file_ec)
+	$(OPENSSL) pkey -in $(test_ca_key_file_ec) -out $@ -inform PEM -outform DER
+all_final += test-ca2.key.der
+
 test_ca_crt_cat12 = test-ca_cat12.crt
 $(test_ca_crt_cat12): $(test_ca_crt) $(test_ca_crt_file_ec)
 	cat $(test_ca_crt) $(test_ca_crt_file_ec) > $@
@@ -151,6 +173,14 @@
 	$(MBEDTLS_CERT_WRITE) request_file=$< serial=4 issuer_crt=$(test_ca_crt) issuer_key=$(test_ca_key_file_rsa) issuer_pwd=$(test_ca_pwd_rsa) not_before=20110212144406 not_after=20210212144406 md=SHA256 version=3 output_file=$@
 all_final += cli-rsa-sha256.crt
 
+cli-rsa-sha256.crt.der: cli-rsa-sha256.crt
+	$(OPENSSL) x509 -in $< -out $@ -inform PEM -outform DER
+all_final += cli-rsa-sha256.crt.der
+
+ cli-rsa.key.der: $(cli_crt_key_file_rsa)
+	$(OPENSSL) pkey -in $< -out $@ -inform PEM -outform DER
+all_final += cli-rsa.key.der
+
 test_ca_int_rsa1 = test-int-ca.crt
 
 server7.csr: server7.key
@@ -169,6 +199,22 @@
 	cat server7.crt test-int-ca-exp.crt > $@
 all_final += server7_int-ca-exp.crt
 
+cli2.crt.der: cli2.crt
+	$(OPENSSL) x509 -in $< -out $@ -inform PEM -outform DER
+all_final += cli2.crt.der
+
+ cli2.key.der: cli2.key
+	$(OPENSSL) pkey -in $< -out $@ -inform PEM -outform DER
+all_final += cli2.key.der
+
+ server5.crt.der: server5.crt
+	$(OPENSSL) x509 -in $< -out $@ -inform PEM -outform DER
+all_final += server5.crt.der
+
+ server5.key.der: server5.key
+	$(OPENSSL) pkey -in $< -out $@ -inform PEM -outform DER
+all_final += server5.key.der
+
 server5-ss-expired.crt: server5.key
 	$(FAKETIME) -f -3653d $(OPENSSL) req -x509 -new -subj "/C=UK/O=mbed TLS/OU=testsuite/CN=localhost" -days 3653 -sha256 -key $< -out $@
 all_final += server5-ss-expired.crt
@@ -844,6 +890,18 @@
 	$(MBEDTLS_CERT_REQ) output_file=$@ filename=$< subject_name="C=NL,O=PolarSSL,CN=localhost" md=SHA256
 all_intermediate += server2.req.sha256
 
+server2.crt.der: server2.crt
+	$(OPENSSL) x509 -inform PEM -in $< -outform DER -out $@
+all_final += server2.crt.der
+
+server2-sha256.crt.der: server2-sha256.crt
+	$(OPENSSL) x509 -inform PEM -in $< -outform DER -out $@
+all_final += server2-sha256.crt.der
+
+server2.key.der: server2.key
+	$(OPENSSL) pkey -in $< -out $@ -inform PEM -outform DER
+all_final += server2.key.der
+
 # server5*
 
 # The use of 'Server 1' in the DN is intentional here, as the DN is hardcoded in the x509_write test suite.'
@@ -928,9 +986,7 @@
 
 server2.crt: server2.req.sha256
 	$(MBEDTLS_CERT_WRITE) request_file=server2.req.sha256 serial=2 issuer_crt=$(test_ca_crt) issuer_key=$(test_ca_key_file_rsa) issuer_pwd=$(test_ca_pwd_rsa) not_before=20110212144406 not_after=20210212144406 md=SHA1 version=3 output_file=$@
-server2.der: server2.crt
-	$(OPENSSL) x509 -inform PEM -in $< -outform DER -out $@
-all_final += server2.crt server2.der
+all_final += server2.crt
 
 server2-sha256.crt: server2.req.sha256
 	$(MBEDTLS_CERT_WRITE) request_file=server2.req.sha256 serial=2 issuer_crt=$(test_ca_crt) issuer_key=$(test_ca_key_file_rsa) issuer_pwd=$(test_ca_pwd_rsa) not_before=20110212144406 not_after=20210212144406 md=SHA256 version=3 output_file=$@