--- /Base64.java	2023-07-05 03:12:17.470027322 +0200
+++ /Codec-1/src/java/org/apache/commons/codec/binary/Base64.java	2023-07-05 03:12:17.474027321 +0200
@@ -343,7 +343,7 @@
         }
 
         // form integral number of 6-bit groups
-        dataIndex = i * 3;
+dataIndex = chunksSoFar * 3;
 
         if (fewerThan24bits == EIGHTBIT) {
             b1 = binaryData[dataIndex];
