diff --git a/src/libstrongswan/credentials/auth_cfg.c b/src/libstrongswan/credentials/auth_cfg.c
index 9958228a4..fb052ca90 100644
--- a/src/libstrongswan/credentials/auth_cfg.c
+++ b/src/libstrongswan/credentials/auth_cfg.c
@@ -43,7 +43,7 @@ ENUM(auth_rule_names, AUTH_RULE_IDENTITY, AUTH_HELPER_AC_CERT,
 	"RULE_EAP_VENDOR",
 	"RULE_XAUTH_BACKEND",
 	"RULE_XAUTH_IDENTITY",
-	"AUTH_RULE_CA_IDENTITY",
+	"RULE_CA_IDENTITY",
 	"RULE_CA_CERT",
 	"RULE_IM_CERT",
 	"RULE_SUBJECT_CERT",
@@ -64,6 +64,37 @@ ENUM(auth_rule_names, AUTH_RULE_IDENTITY, AUTH_HELPER_AC_CERT,
 	"HELPER_AC_CERT",
 );
 
+ENUM(auth_rule_names_lower, AUTH_RULE_IDENTITY, AUTH_HELPER_AC_CERT,
+	"identity",
+	"identity_loose",
+	"auth_class",
+	"aaa_identity",
+	"eap_identity",
+	"eap_type",
+	"eap_vendor",
+	"xauth_backend",
+	"xauth_identity",
+	"ca_identity",
+	"ca_cert",
+	"im_cert",
+	"subject_cert",
+	"crl_validation",
+	"ocsp_validation",
+	"cert_validation_suspended",
+	"group",
+	"rsa_strength",
+	"ecdsa_strength",
+	"signature_scheme",
+	"ike_signature_scheme",
+	"cert_policy",
+	"im_cert",
+	"subject_cert",
+	"im_hash_url",
+	"subject_hash_url",
+	"revocation_cert",
+	"ac_cert",
+);
+
 /**
  * Check if the given rule is a rule for which there may be multiple values.
  */
diff --git a/src/libstrongswan/credentials/auth_cfg.h b/src/libstrongswan/credentials/auth_cfg.h
index 561f369ed..bb1545347 100644
--- a/src/libstrongswan/credentials/auth_cfg.h
+++ b/src/libstrongswan/credentials/auth_cfg.h
@@ -132,10 +132,15 @@ enum auth_rule_t {
 };
 
 /**
- * enum name for auth_rule_t.
+ * Names for auth_rule_t (upper case).
  */
 extern enum_name_t *auth_rule_names;
 
+/**
+ * Names for auth_rule_t (lower case, without "rule_" or "helper_" prefix).
+ */
+extern enum_name_t *auth_rule_names_lower;
+
 /**
  * Authentication/Authorization round.
  *