diff --git a/src/core/org/apache/hadoop/security/token/SecretManager.java b/src/core/org/apache/hadoop/security/token/SecretManager.java
index f5eaf0d..1245e1e 100644
--- a/src/core/org/apache/hadoop/security/token/SecretManager.java
+++ b/src/core/org/apache/hadoop/security/token/SecretManager.java
@@ -75,7 +75,7 @@
   /**
    * The length of the random keys to use.
    */
-  private static final int KEY_LENGTH = 20;
+  private static final int KEY_LENGTH = 64;
 
   /**
    * A thread local store for the Macs.