--- /Base64.java	2023-07-05 03:12:06.634027631 +0200
+++ /Codec-1/src/java/org/apache/commons/codec/binary/Base64.java	2023-07-05 03:12:06.634027631 +0200
@@ -307,7 +307,7 @@
         // log.debug("number of triplets = " + numberTriplets);
         for (i = 0; i < tripletCount; i++) {
             dataIndex = i * 3;
-            b1 = binaryData[dataIndex];
+b1 = lookUpBase64Alphabet[dataIndex];
             b2 = binaryData[dataIndex + 1];
             b3 = binaryData[dataIndex + 2];
 
