diff --git a/system-tests/tests/regression/cre/http/config/config.go b/system-tests/tests/regression/cre/http/config/config.go
index e66edb6f5e7..adfed780151 100644
--- a/system-tests/tests/regression/cre/http/config/config.go
+++ b/system-tests/tests/regression/cre/http/config/config.go
@@ -5,3 +5,9 @@ type Config struct {
 	URL           string `json:"url"`
 	TestCase      string `json:"testCase"` // Identifies which test case to run
 }
+
+const (
+	TestCaseInvalidKeyType       = "invalid-key-type"
+	TestCaseInvalidPublicKey     = "invalid-public-key"
+	TestCaseNonExistingPublicKey = "non-existing-public-key"
+)
diff --git a/system-tests/tests/regression/cre/http/main.go b/system-tests/tests/regression/cre/http/main.go
index 8c53473b19c..9d757206322 100644
--- a/system-tests/tests/regression/cre/http/main.go
+++ b/system-tests/tests/regression/cre/http/main.go
@@ -30,7 +30,7 @@ func RunHTTPRegressionWorkflow(wfCfg config.Config, _ *slog.Logger, _ cre.Secret
 	var triggerConfig *http.Config
 
 	switch wfCfg.TestCase {
-	case "invalid-key-type":
+	case config.TestCaseInvalidKeyType:
 		// Use an invalid key type (non-existent enum value)
 		triggerConfig = &http.Config{
 			AuthorizedKeys: []*http.AuthorizedKey{
@@ -40,23 +40,23 @@ func RunHTTPRegressionWorkflow(wfCfg config.Config, _ *slog.Logger, _ cre.Secret
 				},
 			},
 		}
-	case "invalid-public-key":
+	case config.TestCaseInvalidPublicKey:
 		// Use an invalid public key format
 		triggerConfig = &http.Config{
 			AuthorizedKeys: []*http.AuthorizedKey{
 				{
 					Type:      http.KeyType_KEY_TYPE_ECDSA_EVM,
-					PublicKey: "invalid-public-key-format",
+					PublicKey: wfCfg.AuthorizedKey,
 				},
 			},
 		}
-	case "non-existing-public-key":
+	case config.TestCaseNonExistingPublicKey:
 		// Use a non-existing but properly formatted public key
 		triggerConfig = &http.Config{
 			AuthorizedKeys: []*http.AuthorizedKey{
 				{
 					Type:      http.KeyType_KEY_TYPE_ECDSA_EVM,
-					PublicKey: "0x0000000000000000000000000000000000000000",
+					PublicKey: wfCfg.AuthorizedKey,
 				},
 			},
 		}
diff --git a/system-tests/tests/regression/cre/v2_http_trigger_regression_test.go b/system-tests/tests/regression/cre/v2_http_trigger_regression_test.go
index 5611e5c28b5..acdbdb05aff 100644
--- a/system-tests/tests/regression/cre/v2_http_trigger_regression_test.go
+++ b/system-tests/tests/regression/cre/v2_http_trigger_regression_test.go
@@ -38,23 +38,27 @@ import (
 type httpNegativeTest struct {
 	name          string
 	testCase      string
+	keyToUse      string
 	expectedError string
 }
 
 var httpNegativeTests = []httpNegativeTest{
 	{
 		name:          "invalid AuthorizedKey.Type",
-		testCase:      "invalid-key-type",
+		testCase:      http_config.TestCaseInvalidKeyType,
+		keyToUse:      mustDKGKey(),
 		expectedError: "unsupported key type",
 	},
 	{
 		name:          "invalid AuthorizedKey.PublicKey format",
-		testCase:      "invalid-public-key",
+		testCase:      http_config.TestCaseInvalidPublicKey,
+		keyToUse:      "invalid-public-key-format",
 		expectedError: "invalid public key",
 	},
 	{
 		name:          "non-existing AuthorizedKey.PublicKey",
-		testCase:      "non-existing-public-key",
+		testCase:      http_config.TestCaseNonExistingPublicKey,
+		keyToUse:      "0x0000000000000000000000000000000000000000",
 		expectedError: "Auth failure",
 	},
 }
@@ -113,21 +117,8 @@ func HTTPTriggerFailsTest(t *testing.T, testEnv *ttypes.TestEnvironment, httpNeg
 	t_helpers.IgnoreUserLogs(t.Context(), userLogsCh)
 	testLogger.Info().Msg("Creating HTTP negative test workflow configuration...")
 
-	// Determine the authorized key to use based on test case
-	var authorizedKeyToUse string
-	switch httpNegativeTest.testCase {
-	case "invalid-public-key":
-		authorizedKeyToUse = "0x000000000000000000000000000000000000000"
-	case "non-existing-public-key":
-		authorizedKeyToUse = "0x0000000000000000000000000000000000000000"
-	default:
-		dkgKey, dErr := dkgrecipientkey.New()
-		require.NoError(t, dErr, "failed to generate new DKG recipient key")
-		authorizedKeyToUse = dkgKey.PublicKeyString()
-	}
-
 	workflowConfig := http_config.Config{
-		AuthorizedKey: authorizedKeyToUse,
+		AuthorizedKey: httpNegativeTest.keyToUse,
 		URL:           fakeServer.BaseURLHost + "/orders-" + testID,
 		TestCase:      httpNegativeTest.testCase,
 	}
@@ -137,7 +128,7 @@ func HTTPTriggerFailsTest(t *testing.T, testEnv *ttypes.TestEnvironment, httpNeg
 
 	// For invalid key type and invalid public key format, we expect the workflow deployment/trigger setup to fail
 	// For non-existing public key, we expect the trigger execution to fail with unauthorized error at gateway level
-	if httpNegativeTest.testCase == "non-existing-public-key" {
+	if httpNegativeTest.testCase == http_config.TestCaseNonExistingPublicKey {
 		// Try to execute the trigger with a valid signing key but unauthorized public key
 		testLogger.Info().Msg("Attempting to execute HTTP trigger with unauthorized key...")
 		authFailureDetected := executeHTTPTriggerRequestExpectingFailure(t, testEnv, workflowName, signingKey)
@@ -314,3 +305,11 @@ func startTestOrderServer(t *testing.T, port int, testID string) (*fake.Output,
 	framework.L.Info().Msgf("Test order server started on port %d at: %s with endpoint %s", port, fakeOutput.BaseURLHost, endpoint)
 	return fakeOutput, nil
 }
+
+func mustDKGKey() string {
+	dkgKey, dErr := dkgrecipientkey.New()
+	if dErr != nil {
+		panic(dErr)
+	}
+	return dkgKey.PublicKeyString()
+}