diff --git a/library/certs.c b/library/certs.c
index 02c2215..abe19a4 100644
--- a/library/certs.c
+++ b/library/certs.c
@@ -116,7 +116,6 @@
 #endif /* MBEDTLS_ECDSA_C */
 
 #if defined(MBEDTLS_RSA_C)
-
 #if defined(MBEDTLS_SHA256_C)
 #define TEST_CA_CRT_RSA_SHA256                                          \
 "-----BEGIN CERTIFICATE-----\r\n"                                       \
@@ -141,42 +140,13 @@
 "n20NRVA1Vjs6GAROr4NqW4k/+LofY9y0LLDE+p0oIEKXIsIvhPr39swxSA==\r\n"      \
 "-----END CERTIFICATE-----\r\n"
 
-#define TEST_SRV_CRT_RSA_SHA256                                         \
-"-----BEGIN CERTIFICATE-----\r\n"                                       \
-"MIIDPzCCAiegAwIBAgIJANBEZkZxdopmMA0GCSqGSIb3DQEBCwUAMDsxCzAJBgNV\r\n"  \
-"BAYTAk5MMREwDwYDVQQKDAhQb2xhclNTTDEZMBcGA1UEAwwQUG9sYXJTU0wgVGVz\r\n"  \
-"dCBDQTAeFw0xODAzMjcxNDEzMjFaFw0yNzA1MDQxNDEzMjFaMDQxCzAJBgNVBAYT\r\n"  \
-"Ak5MMREwDwYDVQQKEwhQb2xhclNTTDESMBAGA1UEAxMJbG9jYWxob3N0MIIBIjAN\r\n"  \
-"BgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwU2j3efNHdEE10lyuJmsDnjkOjxK\r\n"  \
-"zzoTFtBa5M2jAIin7h5rlqdStJDvLXJ6PiSa/LY0rCT1d+AmZIycsCh9odrqjObJ\r\n"  \
-"HJa8/sEEUrM21KP64bF22JDBYbRmUjaiJlOqq3ReB30Zgtsq2B+g2Q0cLUlm91sl\r\n"  \
-"c0boC4pPaQy1AJDh2oIQZn2uVCuLZXmRoeJhw81ASQjuaAzxi4bSRr/QuKoRAx5/\r\n"  \
-"VqgaHkQYDw+Fi9qLRF7iGMZiL8dmjfpd2H3zJ4kpAcWQDj8n8TDISg7v1t7Hxydr\r\n"  \
-"xwU9esQCPJodPg/oNJhby3NLUpbYEaIsgIhpOVrTD7DeWS8Rx/fqEgEwlwIDAQAB\r\n"  \
-"o00wSzAdBgNVHQ4EFgQUpQXoZLjc32APUBJNYKhkr02LQ5MwCQYDVR0TBAIwADAf\r\n"  \
-"BgNVHSMEGDAWgBS0WuSls97SUva51aaVD+s+vMf9/zANBgkqhkiG9w0BAQsFAAOC\r\n"  \
-"AQEAcvY0HeIT7zmweE5/xk20kvFc0Qbc9dLzdxDlGLv7kDx/9brxjCRTa0/YejuT\r\n"  \
-"Pm8diFs1U6OvlzdROkbZpncW9c62mkg5zRrCo3T2E0SZx9GP8JNlo7MhiESjDsFO\r\n"  \
-"hcCGCKRnjOlyX4w25hA9JkwnkayeeTWnLwXS0BoFI2liWZNOLlxaSudffD4P1Hls\r\n"  \
-"vYOE0cU99bIkaZa9/aNygcjB08dUrD5AFvQO7S7gPCrpDrnuHEXi8EFlbGZfTAHy\r\n"  \
-"u+ozycErFLhYhZjtKUs2d1YsK4QKlI1PVjlucfrRXaEnLbi37cKqT68EceHh6ztd\r\n"  \
-"lPlhwRx+VicKsW8NHZ3k/wl3Yg==\r\n"                                      \
-"-----END CERTIFICATE-----\r\n"
-
-
+static const char mbedtls_test_ca_crt_rsa_sha256[] = TEST_CA_CRT_RSA_SHA256;
 const char   mbedtls_test_ca_crt_rsa[]   = TEST_CA_CRT_RSA_SHA256;
 const size_t mbedtls_test_ca_crt_rsa_len = sizeof( mbedtls_test_ca_crt_rsa );
 #define TEST_CA_CRT_RSA_SOME
-
-const char mbedtls_test_srv_crt_rsa[] =  TEST_SRV_CRT_RSA_SHA256;
-const size_t mbedtls_test_srv_crt_rsa_len = sizeof( mbedtls_test_srv_crt_rsa );
-#define TEST_SRV_CRT_RSA_SOME
-
-static const char mbedtls_test_ca_crt_rsa_sha256[] = TEST_CA_CRT_RSA_SHA256;
-
 #endif /* MBEDTLS_SHA256_C */
 
-#if  defined(MBEDTLS_SHA1_C) || !defined(TEST_CA_CRT_RSA_SOME) || !defined(TEST_SRV_CRT_RSA_SOME)
+#if !defined(TEST_CA_CRT_RSA_SOME) || defined(MBEDTLS_SHA1_C)
 #define TEST_CA_CRT_RSA_SHA1                                            \
 "-----BEGIN CERTIFICATE-----\r\n"                                       \
 "MIIDhzCCAm+gAwIBAgIBADANBgkqhkiG9w0BAQUFADA7MQswCQYDVQQGEwJOTDER\r\n"  \
@@ -200,6 +170,43 @@
 "7Z2mCGDNMhjQc+BYcdnl0lPXjdDK6V0qCg1dVewhUBcW5gZKzV7e9+DpVA==\r\n"      \
 "-----END CERTIFICATE-----\r\n"
 
+static const char mbedtls_test_ca_crt_rsa_sha1[] = TEST_CA_CRT_RSA_SHA1;
+
+#if !defined (TEST_CA_CRT_RSA_SOME)
+const char   mbedtls_test_ca_crt_rsa[]   = TEST_CA_CRT_RSA_SHA1;
+const size_t mbedtls_test_ca_crt_rsa_len = sizeof( mbedtls_test_ca_crt_rsa );
+#endif /* !TEST_CA_CRT_RSA_SOME */
+#endif /* !TEST_CA_CRT_RSA_COME || MBEDTLS_SHA1_C */
+
+#if defined(MBEDTLS_SHA256_C)
+#define TEST_SRV_CRT_RSA_SHA256                                         \
+"-----BEGIN CERTIFICATE-----\r\n"                                       \
+"MIIDPzCCAiegAwIBAgIJANBEZkZxdopmMA0GCSqGSIb3DQEBCwUAMDsxCzAJBgNV\r\n"  \
+"BAYTAk5MMREwDwYDVQQKDAhQb2xhclNTTDEZMBcGA1UEAwwQUG9sYXJTU0wgVGVz\r\n"  \
+"dCBDQTAeFw0xODAzMjcxNDEzMjFaFw0yNzA1MDQxNDEzMjFaMDQxCzAJBgNVBAYT\r\n"  \
+"Ak5MMREwDwYDVQQKEwhQb2xhclNTTDESMBAGA1UEAxMJbG9jYWxob3N0MIIBIjAN\r\n"  \
+"BgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwU2j3efNHdEE10lyuJmsDnjkOjxK\r\n"  \
+"zzoTFtBa5M2jAIin7h5rlqdStJDvLXJ6PiSa/LY0rCT1d+AmZIycsCh9odrqjObJ\r\n"  \
+"HJa8/sEEUrM21KP64bF22JDBYbRmUjaiJlOqq3ReB30Zgtsq2B+g2Q0cLUlm91sl\r\n"  \
+"c0boC4pPaQy1AJDh2oIQZn2uVCuLZXmRoeJhw81ASQjuaAzxi4bSRr/QuKoRAx5/\r\n"  \
+"VqgaHkQYDw+Fi9qLRF7iGMZiL8dmjfpd2H3zJ4kpAcWQDj8n8TDISg7v1t7Hxydr\r\n"  \
+"xwU9esQCPJodPg/oNJhby3NLUpbYEaIsgIhpOVrTD7DeWS8Rx/fqEgEwlwIDAQAB\r\n"  \
+"o00wSzAdBgNVHQ4EFgQUpQXoZLjc32APUBJNYKhkr02LQ5MwCQYDVR0TBAIwADAf\r\n"  \
+"BgNVHSMEGDAWgBS0WuSls97SUva51aaVD+s+vMf9/zANBgkqhkiG9w0BAQsFAAOC\r\n"  \
+"AQEAcvY0HeIT7zmweE5/xk20kvFc0Qbc9dLzdxDlGLv7kDx/9brxjCRTa0/YejuT\r\n"  \
+"Pm8diFs1U6OvlzdROkbZpncW9c62mkg5zRrCo3T2E0SZx9GP8JNlo7MhiESjDsFO\r\n"  \
+"hcCGCKRnjOlyX4w25hA9JkwnkayeeTWnLwXS0BoFI2liWZNOLlxaSudffD4P1Hls\r\n"  \
+"vYOE0cU99bIkaZa9/aNygcjB08dUrD5AFvQO7S7gPCrpDrnuHEXi8EFlbGZfTAHy\r\n"  \
+"u+ozycErFLhYhZjtKUs2d1YsK4QKlI1PVjlucfrRXaEnLbi37cKqT68EceHh6ztd\r\n"  \
+"lPlhwRx+VicKsW8NHZ3k/wl3Yg==\r\n"                                      \
+"-----END CERTIFICATE-----\r\n"
+
+const char mbedtls_test_srv_crt_rsa[]     =  TEST_SRV_CRT_RSA_SHA256;
+const size_t mbedtls_test_srv_crt_rsa_len = sizeof( mbedtls_test_srv_crt_rsa );
+#define TEST_SRV_CRT_RSA_SOME
+#endif /* MBEDTLS_SHA256_C */
+
+#if !defined(TEST_SRV_CRT_RSA_SOME) || defined(MBEDTLS_SHA1_C)
 #define TEST_SRV_CRT_RSA_SHA1                                                  \
 "-----BEGIN CERTIFICATE-----\r\n"                                      \
 "MIIDNzCCAh+gAwIBAgIBAjANBgkqhkiG9w0BAQUFADA7MQswCQYDVQQGEwJOTDER\r\n" \
@@ -222,19 +229,11 @@
 "4mN4lW7gLdenN6g=\r\n"                                                 \
 "-----END CERTIFICATE-----\r\n";
 
-#if !defined (TEST_CA_CRT_RSA_SOME)
-const char   mbedtls_test_ca_crt_rsa[]   = TEST_CA_CRT_RSA_SHA1;
-const size_t mbedtls_test_ca_crt_rsa_len = sizeof( mbedtls_test_ca_crt_rsa );
-#endif
-
 #if !defined(TEST_SRV_CRT_RSA_SOME)
-const char mbedtls_test_srv_crt_rsa[] =  TEST_SRV_CRT_RSA_SHA1;
+const char mbedtls_test_srv_crt_rsa[]     =  TEST_SRV_CRT_RSA_SHA1;
 const size_t mbedtls_test_srv_crt_rsa_len = sizeof( mbedtls_test_srv_crt_rsa );
-#endif
-
-static const char mbedtls_test_ca_crt_rsa_sha1[] = TEST_CA_CRT_RSA_SHA1;
-
-#endif /* MBEDTLS_SHA1_C || !TEST_CA_CRT_RSA_SOME || !TEST_SRV_CRT_RSA_SOME  */
+#endif /* TEST_SRV_CRT_RSA_SOME */
+#endif /* !TEST_CA_CRT_RSA_SOME || MBEDTLS_SHA1_C */
 
 const char mbedtls_test_ca_key_rsa[] =
 "-----BEGIN RSA PRIVATE KEY-----\r\n"