diff --git a/core/src/main/java/org/lflang/TargetConfig.java b/core/src/main/java/org/lflang/TargetConfig.java
index 12096f9d6c..5558cfc3d3 100644
--- a/core/src/main/java/org/lflang/TargetConfig.java
+++ b/core/src/main/java/org/lflang/TargetConfig.java
@@ -274,6 +274,9 @@ public TargetConfig(Properties cliArgs, TargetDecl target, MessageReporter messa
   /** Indicate whether HMAC authentication is used. */
   public boolean auth = false;
 
+  /** Path to sst configuration files. */
+  public boolean sst = false;
+
   /** Indicate whether the runtime should use multithreaded execution. */
   public boolean threading = true;
 
diff --git a/core/src/main/java/org/lflang/TargetProperty.java b/core/src/main/java/org/lflang/TargetProperty.java
index d494e1d760..13913aa51f 100644
--- a/core/src/main/java/org/lflang/TargetProperty.java
+++ b/core/src/main/java/org/lflang/TargetProperty.java
@@ -592,6 +592,16 @@ public enum TargetProperty {
       (config, value, err) -> {
         config.singleFileProject = ASTUtils.toBoolean(value);
       }),
+  
+  /** Directive to specify the path of the sst configuration file. */
+  SST(
+    "sst",
+    PrimitiveType.BOOLEAN,
+    Arrays.asList(Target.C, Target.CCPP),
+    (config) -> ASTUtils.toElement(config.sst),
+    (config, value, err) -> {
+      config.sst = ASTUtils.toBoolean(value);
+    }),
 
   /** Directive to indicate whether the runtime should use multi-threading. */
   THREADING(
diff --git a/core/src/main/java/org/lflang/federated/extensions/CExtensionUtils.java b/core/src/main/java/org/lflang/federated/extensions/CExtensionUtils.java
index 0903d2d90d..d57c193cee 100644
--- a/core/src/main/java/org/lflang/federated/extensions/CExtensionUtils.java
+++ b/core/src/main/java/org/lflang/federated/extensions/CExtensionUtils.java
@@ -180,6 +180,9 @@ public static void handleCompileDefinitions(
     if (federate.targetConfig.auth) {
       federate.targetConfig.compileDefinitions.put("FEDERATED_AUTHENTICATED", "");
     }
+    if (federate.targetConfig.sst) {
+      federate.targetConfig.compileDefinitions.put("FEDERATED_AUTHENTICATED_SST", "");
+    }
     federate.targetConfig.compileDefinitions.put(
         "NUMBER_OF_FEDERATES", String.valueOf(numOfFederates));
     federate.targetConfig.compileDefinitions.put("EXECUTABLE_PREAMBLE", "");
diff --git a/core/src/main/java/org/lflang/federated/launcher/FedLauncherGenerator.java b/core/src/main/java/org/lflang/federated/launcher/FedLauncherGenerator.java
index 6f2347d85c..d97efd1dcd 100644
--- a/core/src/main/java/org/lflang/federated/launcher/FedLauncherGenerator.java
+++ b/core/src/main/java/org/lflang/federated/launcher/FedLauncherGenerator.java
@@ -122,6 +122,14 @@ public void doGenerate(List<FederateInstance> federates, RtiConfig rtiConfig) {
 
     shCode.append("#### Host is ").append(host);
 
+    // Launch sst settings.
+    if(targetConfig.sst) {
+      //Add sst settings
+      // TODO:
+      // 1. Key generation
+      // 2. Config generation.
+    }
+
     // Launch the RTI in the foreground.
     if (host.equals("localhost") || host.equals("0.0.0.0")) {
       // FIXME: the paths below will not work on Windows
@@ -337,6 +345,11 @@ private String getRtiCommand(List<FederateInstance> federates, boolean isRemote)
     if (targetConfig.auth) {
       commands.add("                        -a \\");
     }
+    if (targetConfig.sst) {
+      // commands.add("                        -sst " + args + " \\"); //TODO: get config from args.
+      // Should be something like this.
+      // RTI -sst test/C/fed-gen/SimpleFederated/src-gen/RTI/sst/RTI.config 
+    }
     if (targetConfig.tracing != null) {
       commands.add("                        -t \\");
     }
diff --git a/core/src/main/java/org/lflang/generator/c/CCmakeGenerator.java b/core/src/main/java/org/lflang/generator/c/CCmakeGenerator.java
index 717f0714f5..7c8822fef4 100644
--- a/core/src/main/java/org/lflang/generator/c/CCmakeGenerator.java
+++ b/core/src/main/java/org/lflang/generator/c/CCmakeGenerator.java
@@ -309,7 +309,10 @@ CodeBuilder generateCMakeCode(
         cMakeCode.pr("pico_enable_stdio_uart(${LF_MAIN_TARGET} " + (uart ? 1 : 0) + ")");
         break;
     }
-
+    
+    if (targetConfig.auth || targetConfig.sst) {
+      // If security is requested, add the auth option or sst option.
+    }
     if (targetConfig.auth) {
       // If security is requested, add the auth option.
       var osName = System.getProperty("os.name").toLowerCase();
diff --git a/core/src/main/resources/lib/c/reactor-c b/core/src/main/resources/lib/c/reactor-c
index f0bd1bc653..89b5724c3d 160000
--- a/core/src/main/resources/lib/c/reactor-c
+++ b/core/src/main/resources/lib/c/reactor-c
@@ -1 +1 @@
-Subproject commit f0bd1bc6533e4b47f2af9d4e9d8613fa5e670be0
+Subproject commit 89b5724c3d4a85f89a284523d6dade9050b04354
diff --git a/core/src/main/resources/lib/cpp/reactor-cpp b/core/src/main/resources/lib/cpp/reactor-cpp
index fa685f1db9..521f1d852b 160000
--- a/core/src/main/resources/lib/cpp/reactor-cpp
+++ b/core/src/main/resources/lib/cpp/reactor-cpp
@@ -1 +1 @@
-Subproject commit fa685f1db99b1652e39a5cf3c6356a8db26b52bb
+Subproject commit 521f1d852b6b3dc5850d3dcfc669ea812296db94
diff --git a/test/C/src/federated/SimpleFederatedSST.lf b/test/C/src/federated/SimpleFederatedSST.lf
new file mode 100644
index 0000000000..ee40129b7a
--- /dev/null
+++ b/test/C/src/federated/SimpleFederatedSST.lf
@@ -0,0 +1,19 @@
+/**
+ * This simple test checks if federate authentication works by adding `auth`
+ * target property.
+ */
+ target C {
+    timeout: 2 secs,
+    build-type: RelWithDebInfo,
+    sst: true,
+    logging: DEBUG
+}
+
+reactor Fed {
+    input in: int
+    output out: int
+}
+
+federated reactor {
+    fed1 = new Fed()
+}