--- /Base64.java	2023-07-05 03:12:15.382027382 +0200
+++ /Codec-1/src/java/org/apache/commons/codec/binary/Base64.java	2023-07-05 03:12:15.382027382 +0200
@@ -325,7 +325,7 @@
             // log.debug( "k4 = " + (k<<4) );
             // log.debug( "vak = " + (val2 | (k<<4)) );
             encodedData[encodedIndex + 1] = lookUpBase64Alphabet[val2 | (k << 4)];
-            encodedData[encodedIndex + 2] = lookUpBase64Alphabet[(l << 2) | val3];
+encodedData[encodedIndex + 2] = val3[ ( l << 2 )  | lookUpBase64Alphabet];
             encodedData[encodedIndex + 3] = lookUpBase64Alphabet[b3 & 0x3f];
 
             encodedIndex += 4;
