diff --git a/tests/data_files/Makefile b/tests/data_files/Makefile
index d023c8d..7ecafa0 100644
--- a/tests/data_files/Makefile
+++ b/tests/data_files/Makefile
@@ -909,7 +909,33 @@
 	$(MBEDTLS_CERT_WRITE) request_file=server2.req.sha256 serial=2 issuer_crt=$(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=$@
 all_final += server2-sha256.crt
 
+# MD2, MD4, MD5 test certificates
 
+cert_md_test_key = $(cli_crt_key_file_rsa)
+
+cert_md2.csr: $(cert_md_test_key)
+	$(MBEDTLS_CERT_REQ) output_file=$@ filename=$< subject_name="C=NL,O=PolarSSL,CN=PolarSSL Cert MD2" md=MD2
+all_intermediate += cert_md2.csr
+
+cert_md2.crt: cert_md2.csr
+	$(MBEDTLS_CERT_WRITE) request_file=$< serial=4 issuer_crt=$(test_ca_crt) issuer_key=$(test_ca_key_file_rsa) issuer_pwd=$(test_ca_pwd_rsa) not_before=20110212144406 not_after=20210212144406 md=MD2 version=3 output_file=$@
+all_final += cert_md2.crt
+
+cert_md4.csr: $(cert_md_test_key)
+	$(MBEDTLS_CERT_REQ) output_file=$@ filename=$< subject_name="C=NL,O=PolarSSL,CN=PolarSSL Cert MD4" md=MD4
+all_intermediate += cert_md4.csr
+
+cert_md4.crt: cert_md4.csr
+	$(MBEDTLS_CERT_WRITE) request_file=$< serial=4 issuer_crt=$(test_ca_crt) issuer_key=$(test_ca_key_file_rsa) issuer_pwd=$(test_ca_pwd_rsa) not_before=20110212144406 not_after=20210212144406 md=MD4 version=3 output_file=$@
+all_final += cert_md4.crt
+
+cert_md5.csr: $(cert_md_test_key)
+	$(MBEDTLS_CERT_REQ) output_file=$@ filename=$< subject_name="C=NL,O=PolarSSL,CN=PolarSSL Cert MD5" md=MD5
+all_intermediate += cert_md5.csr
+
+cert_md5.crt: cert_md5.csr
+	$(MBEDTLS_CERT_WRITE) request_file=$< serial=4 issuer_crt=$(test_ca_crt) issuer_key=$(test_ca_key_file_rsa) issuer_pwd=$(test_ca_pwd_rsa) not_before=20110212144406 not_after=20210212144406 md=MD5 version=3 output_file=$@
+all_final += cert_md5.crt
 
 ################################################################
 #### Meta targets