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diff --git a/src/main/java/org/ldk/structs/EntropySource.java b/src/main/java/org/ldk/structs/EntropySource.java
new file mode 100644
index 00000000..95f00655
--- /dev/null
+++ b/src/main/java/org/ldk/structs/EntropySource.java
@@ -0,0 +1,69 @@
+package org.ldk.structs;
+
+import org.ldk.impl.bindings;
+import org.ldk.enums.*;
+import org.ldk.util.*;
+import java.util.Arrays;
+import java.lang.ref.Reference;
+import javax.annotation.Nullable;
+
+/**
+ * A trait that describes a source of entropy.
+ */
+@SuppressWarnings("unchecked") // We correctly assign various generic arrays
+public class EntropySource extends CommonBase {
+	final bindings.LDKEntropySource bindings_instance;
+	EntropySource(Object _dummy, long ptr) { super(ptr); bindings_instance = null; }
+	private EntropySource(bindings.LDKEntropySource arg) {
+		super(bindings.LDKEntropySource_new(arg));
+		this.ptrs_to.add(arg);
+		this.bindings_instance = arg;
+	}
+	@Override @SuppressWarnings("deprecation")
+	protected void finalize() throws Throwable {
+		if (ptr != 0) { bindings.EntropySource_free(ptr); } super.finalize();
+	}
+	/**
+	 * Destroys the object, freeing associated resources. After this call, any access
+	 * to this object may result in a SEGFAULT or worse.
+	 *
+	 * You should generally NEVER call this method. You should let the garbage collector
+	 * do this for you when it finalizes objects. However, it may be useful for types
+	 * which represent locks and should be closed immediately to avoid holding locks
+	 * until the GC runs.
+	 */
+	public void destroy() {
+		if (ptr != 0) { bindings.EntropySource_free(ptr); }
+		ptr = 0;
+	}
+	public static interface EntropySourceInterface {
+		/**
+		 * Gets a unique, cryptographically-secure, random 32-byte value. This method must return a
+		 * different value each time it is called.
+		 */
+		byte[] get_secure_random_bytes();
+	}
+	private static class LDKEntropySourceHolder { EntropySource held; }
+	public static EntropySource new_impl(EntropySourceInterface arg) {
+		final LDKEntropySourceHolder impl_holder = new LDKEntropySourceHolder();
+		impl_holder.held = new EntropySource(new bindings.LDKEntropySource() {
+			@Override public byte[] get_secure_random_bytes() {
+				byte[] ret = arg.get_secure_random_bytes();
+				Reference.reachabilityFence(arg);
+				byte[] result = InternalUtils.check_arr_len(ret, 32);
+				return result;
+			}
+		});
+		return impl_holder.held;
+	}
+	/**
+	 * Gets a unique, cryptographically-secure, random 32-byte value. This method must return a
+	 * different value each time it is called.
+	 */
+	public byte[] get_secure_random_bytes() {
+		byte[] ret = bindings.EntropySource_get_secure_random_bytes(this.ptr);
+		Reference.reachabilityFence(this);
+		return ret;
+	}
+
+}