1 files changed, 1 insertions, 2 deletions
diff --git a/bcprov/src/main/java/org/bouncycastle/crypto/params/DHParameters.java b/bcprov/src/main/java/org/bouncycastle/crypto/params/DHParameters.java
index b679287..fec6dfd 100644
--- a/bcprov/src/main/java/org/bouncycastle/crypto/params/DHParameters.java
+++ b/bcprov/src/main/java/org/bouncycastle/crypto/params/DHParameters.java
@@ -84,8 +84,7 @@ public class DHParameters
     {
         if (l != 0)
         {
-            BigInteger bigL = BigInteger.valueOf(2L ^ (l - 1));
-            if (bigL.compareTo(p) == 1)
+            if (l > p.bitLength())
             {
                 throw new IllegalArgumentException("when l value specified, it must satisfy 2^(l-1) <= p");
             }