X-Git-Url: https://git.argeo.org/?a=blobdiff_plain;f=org.argeo.api.uuid%2Fsrc%2Forg%2Fargeo%2Fapi%2Fuuid%2FNodeIdSupplier.java;fp=org.argeo.api.uuid%2Fsrc%2Forg%2Fargeo%2Fapi%2Fuuid%2FNodeIdSupplier.java;h=81d368d2c8c651c37ea9ab48f7f048db98351f16;hb=ee0a9f240a5da3a1437dda5abe7a1c46c5a3a8e9;hp=94ec50da4b9ff76d3eb86fe94425d6e1ec9dddce;hpb=73ff3654ba6d4a8381b9be5594d0d56f214fac58;p=lgpl%2Fargeo-commons.git

diff --git a/org.argeo.api.uuid/src/org/argeo/api/uuid/NodeIdSupplier.java b/org.argeo.api.uuid/src/org/argeo/api/uuid/NodeIdSupplier.java
index 94ec50da4..81d368d2c 100644
--- a/org.argeo.api.uuid/src/org/argeo/api/uuid/NodeIdSupplier.java
+++ b/org.argeo.api.uuid/src/org/argeo/api/uuid/NodeIdSupplier.java
@@ -1,13 +1,13 @@
 package org.argeo.api.uuid;
 
+import java.security.SecureRandom;
 import java.util.function.Supplier;
 
 /** A factory for node id base */
 public interface NodeIdSupplier extends Supplier<Long> {
 	static long toNodeIdBase(byte[] node) {
 		assert node.length == 6;
-		return UuidFactory.LEAST_SIG_RFC4122_VARIANT
-				| (node[0] & 0xFFL) //
+		return UuidFactory.LEAST_SIG_RFC4122_VARIANT | (node[0] & 0xFFL) //
 				| ((node[1] & 0xFFL) << 8) //
 				| ((node[2] & 0xFFL) << 16) //
 				| ((node[3] & 0xFFL) << 24) //
@@ -19,4 +19,10 @@ public interface NodeIdSupplier extends Supplier<Long> {
 		return (nodeId[0] & 1) != 0;
 	}
 
+	static byte[] randomNodeId() {
+		SecureRandom random = new SecureRandom();
+		byte[] nodeId = new byte[6];
+		random.nextBytes(nodeId);
+		return nodeId;
+	}
 }