diff --git a/LinphoneCallImpl.java b/LinphoneCallImpl.java
index 653bd157e..55d3baedf 100644
--- a/LinphoneCallImpl.java
+++ b/LinphoneCallImpl.java
@@ -39,6 +39,9 @@ class LinphoneCallImpl implements LinphoneCall {
 	private native int getDuration(long nativePtr);
 	private native float getCurrentQuality(long nativePtr);
 	private native float getAverageQuality(long nativePtr);
+	private native String getAuthenticationToken(long nativePtr);
+	private native boolean isAuthenticationTokenVerified(long nativePtr);
+	private native boolean areStreamsEncrypted(long nativePtr);
 
 	protected LinphoneCallImpl(long aNativePtr)  {
 		nativePtr = aNativePtr;
@@ -109,5 +112,14 @@ class LinphoneCallImpl implements LinphoneCall {
 	public float getCurrentQuality() {
 		return getCurrentQuality(nativePtr);
 	}
-	
+
+	public String getAuthenticationToken(){
+		return getAuthenticationToken(nativePtr);
+	}
+	public boolean isAuthenticationTokenVerified(){
+		return isAuthenticationTokenVerified(nativePtr);
+	}
+	public boolean areStreamsEncrypted() {
+		return areStreamsEncrypted(nativePtr);
+	}
 }
diff --git a/LinphoneCoreFactoryImpl.java b/LinphoneCoreFactoryImpl.java
index a2800be92..6301c5c70 100644
--- a/LinphoneCoreFactoryImpl.java
+++ b/LinphoneCoreFactoryImpl.java
@@ -32,10 +32,22 @@ public class LinphoneCoreFactoryImpl extends LinphoneCoreFactory {
 	}
 
 	static {
+		// FFMPEG (audio/video)
 		loadOptionalLibrary("avutil");
 		loadOptionalLibrary("swscale");
 		loadOptionalLibrary("avcore");
 		loadOptionalLibrary("avcodec");
+
+		// OPENSSL (cryptography)
+		// lin prefix avoids collision with libs in /system/lib
+		loadOptionalLibrary("lincrypto");
+		loadOptionalLibrary("linssl");
+
+		// Secure RTP and key negotiation
+		loadOptionalLibrary("srtp");
+		loadOptionalLibrary("zrtpcpp"); // GPLv3+
+
+		//Main library
 		System.loadLibrary("linphone");
 	}
 	@Override
diff --git a/LinphoneCoreImpl.java b/LinphoneCoreImpl.java
index b68d9c676..b8fddda20 100644
--- a/LinphoneCoreImpl.java
+++ b/LinphoneCoreImpl.java
@@ -101,7 +101,8 @@ class LinphoneCoreImpl implements LinphoneCore {
 	private native int resumeCall(long nativePtr, long callPtr);
 	private native void setUploadPtime(long nativePtr, int ptime);
 	private native void setDownloadPtime(long nativePtr, int ptime);
-	
+	private native void setZrtpSecretsCache(long nativePtr, String file);
+
 	LinphoneCoreImpl(LinphoneCoreListener listener, File userConfig,File factoryConfig,Object  userdata) throws IOException {
 		mListener=listener;
 		nativePtr = newLinphoneCore(listener,userConfig.getCanonicalPath(),factoryConfig.getCanonicalPath(),userdata);
@@ -493,4 +494,8 @@ class LinphoneCoreImpl implements LinphoneCore {
 	public void setUploadPtime(int ptime) {
 		setUploadPtime(nativePtr,ptime);
 	}
+
+	public void setZrtpSecretsCache(String file) {
+		setZrtpSecretsCache(nativePtr,file);
+	}
 }
diff --git a/Version.java b/Version.java
index 61a92b40b..14dff0c27 100644
--- a/Version.java
+++ b/Version.java
@@ -34,6 +34,7 @@ public class Version {
 	public static final int API09_GINGERBREAD_23 = 9;
 	public static final int API11_HONEYCOMB_30 = 11;
 
+	private static native boolean nativeHasZrtp();
 	private static native boolean nativeHasNeon();
 	private static Boolean hasNeon;
 
@@ -69,4 +70,7 @@ public class Version {
 		return !Version.sdkStrictlyBelow(5) && Version.hasNeon() && Hacks.hasCamera();
 	}
 
+	public static boolean hasZrtp(){
+		return nativeHasZrtp();
+	}
 }