Finish branch. The examples still have iscrypt.dll/.zip downloads but keeping those for now.

Projects/Src/Compiler.CompressionHandler.pas

@@ -209,8 +209,6 @@ begin
   { If there isn't enough room left to start a new chunk on the current slice,
     start a new slice }
   MinBytesLeft := SizeOf(ZLIBID);
-  if AUseEncryption then
-    Inc(MinBytesLeft, SizeOf(TSetupNonce));
   Inc(MinBytesLeft);  { for at least one byte of data }
   if FSliceBytesLeft < MinBytesLeft then
     NewSlice('');

Projects/Src/Compiler.SetupCompiler.pas

@@ -2817,7 +2817,7 @@ begin
       begin
         SetSetupHeaderOption(shEncryptionUsed);
         if shEncryptionUsed in SetupHeader.Options then
-         GenerateEncryptionBaseNonce(SetupHeader.EncryptionBaseNonce);
+          GenerateEncryptionBaseNonce(SetupHeader.EncryptionBaseNonce);
       end;
     ssExtraDiskSpaceRequired: begin
         if not StrToInteger64(Value, SetupHeader.ExtraDiskSpaceRequired) then

whatsnew.htm

@@ -82,7 +82,7 @@ For conditions of distribution and use, see <a href="files/is/license.txt">LICEN
 <p><span class="head2">Other changes</span></p>
 <ul>
   <li>Updated the LZMA SDK used by Inno Setup to the latest version, increasing the speed of LZMA and LZMA2 compression and decompression (respectively by 21% and 11% in a test with default settings) without changing the compression ratio. Compression memory requirements have increased by about 4%.</li>
-  <li>Updated the encryption algorithm used by Inno Setup to XChaCha20 for extra security.</li>
+  <li>Updated the encryption algorithm used by Inno Setup to XChaCha20 for extra security. This code is built-in: the separate ISCrypt.dll "encryption module" is no longer used and will be automatically deleted when you update.</li>
   <li>Merged the Inno Setup Preprocessor documentation into the main documentation instead of being separate.</li>
   <li>Added a dark mode version of the documentation, automatically used by the Compiler IDE if a dark theme is chosen.</li>
   <li>Pascal Scripting changes: