(PHP ActiveX) Stream a file to compression to encryption to an output file.

Runs a chain of streams to read a source file, compress, encrypt, and write an output file.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

//  This requires the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

//  Initialize the compression object.
$compress = new COM("Chilkat_9_5_0.Compression");
$compress->Algorithm = 'deflate';

//  Initialize the encryption object.
$crypt = new COM("Chilkat_9_5_0.Crypt2");
$crypt->CryptAlgorithm = 'chacha20';
$crypt->KeyLength = 256;
$crypt->EncodingMode = 'hex';
$ivHex = '000000000000000000000002';
$crypt->SetEncodedIV($ivHex,'hex');
$crypt->InitialCount = 42;
$keyHex = '1c9240a5eb55d38af333888604f6b5f0473917c1402b80099dca5cbc207075c0';
$crypt->SetEncodedKey($keyHex,'hex');

//  Setup the streams.
//  streamC is for compression
$streamC = new COM("Chilkat_9_5_0.Stream");
//  streamE is for encryption
$streamE = new COM("Chilkat_9_5_0.Stream");

//  The source for the compressor is a file.
$streamC->SourceFile = 'qa_data/hamlet.xml';
//  The source for the encryptor is the output of the compressor stream.
$success = $streamE->SetSourceStream($streamC);

//  The sink for the encryptor is the output file.
$streamE->SinkFile = 'qa_output/compressed_encrypted.dat';

//  Start the compression and encryption streams in background threads..
// taskC is a Chilkat_9_5_0.Task
$taskC = $compress->CompressStreamAsync($streamC);
// taskE is a Chilkat_9_5_0.Task
$taskE = $crypt->EncryptStreamAsync($streamE);
$success = $taskC->Run();
$success = $taskE->Run();

//  Let the streams run until finished.
//  Let's make sure the background task finished.
//  It should already be the case that the task is finished.
while ((($taskE->Finished != 1) or ($taskC->Finished != 1))) {
    $taskE->SleepMs(20);
}

//  check for success..
if ($taskE->TaskSuccess != 1) {
    print 'async encryption failed:' . "\n";
    print $taskE->ResultErrorText . "\n";
    $success = 0;
}

//  check for success..
if ($taskC->TaskSuccess != 1) {
    print 'async compression failed:' . "\n";
    print $taskC->ResultErrorText . "\n";
    $success = 0;
}

//  Load the file that was produced and decrypt/decompress to verify.
$binData = new COM("Chilkat_9_5_0.BinData");
$success = $binData->LoadFile('qa_output/compressed_encrypted.dat');
$success = $crypt->DecryptBd($binData);
$success = $compress->DecompressBd($binData);

//  binData should contain the original data..
$success = $binData->WriteFile('qa_output/original_hamlet.xml');

print 'Finished.' . "\n";

?>