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Added Saving Harman encrypted SWFs

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Added Editing encrypted flag on header panel
Added `-encrypt` command on CLI for Harman encryption
This commit is contained in:
Jindra Petřík
2023-11-22 22:20:53 +01:00
parent c4cfad716b
commit 8ad981ff25
10 changed files with 614 additions and 177 deletions
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59
libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/SWF.java
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@@ -88,6 +88,7 @@ import com.jpexs.decompiler.flash.exporters.script.AS2ScriptExporter;
import com.jpexs.decompiler.flash.exporters.script.AS3ScriptExporter;
import com.jpexs.decompiler.flash.exporters.settings.ScriptExportSettings;
import com.jpexs.decompiler.flash.exporters.shape.ShapeExportData;
import com.jpexs.decompiler.flash.harman.HarmanSwfEncrypt;
import com.jpexs.decompiler.flash.helpers.HighlightedText;
import com.jpexs.decompiler.flash.helpers.HighlightedTextWriter;
import com.jpexs.decompiler.flash.helpers.NulWriter;
@@ -1140,15 +1141,20 @@ public final class SWF implements SWFContainerItem, Timelined, Openable {
*/
@Override
public void saveTo(OutputStream os) throws IOException {
checkCharset();
byte[] uncompressedData = saveToByteArray(false);
compress(new ByteArrayInputStream(uncompressedData), os, compression, lzmaProperties);
saveTo(os, gfx, false);
}
public void saveTo(OutputStream os, boolean gfx, boolean includeImported) throws IOException {
checkCharset();
byte[] uncompressedData = saveToByteArray(gfx, includeImported);
compress(new ByteArrayInputStream(uncompressedData), os, compression, lzmaProperties);
byte[] newUncompressedData = saveToByteArray(gfx, includeImported);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
compress(new ByteArrayInputStream(newUncompressedData), baos, compression, lzmaProperties);
byte[] newCompressedData = baos.toByteArray();
if (encrypted) {
encrypt(new ByteArrayInputStream(newCompressedData), os);
} else {
os.write(newCompressedData);
}
}
public byte[] getHeaderBytes() {
@@ -2002,8 +2008,30 @@ public final class SWF implements SWFContainerItem, Timelined, Openable {
}
/**
* Decrypts Harman AIR encryption
*
* Encrypts Harman AIR encryption
*/
public static boolean encrypt(InputStream is, OutputStream os) throws IOException {
byte[] hdr = new byte[8];
// SWFheader: signature, version and fileSize
if (is.read(hdr) != 8) {
throw new SwfOpenException(AppResources.translate("error.swf.headerTooShort"));
}
decodeHeader(hdr);
byte[] encrypted;
try {
encrypted = HarmanSwfEncrypt.encrypt(is, hdr);
} catch (NoSuchAlgorithmException | NoSuchPaddingException | InvalidKeyException | InvalidAlgorithmParameterException | IllegalBlockSizeException | BadPaddingException ex) {
return false;
}
os.write(encrypted);
return true;
}
/**
* Decrypts Harman AIR encryption
*/
public static boolean decrypt(InputStream is, OutputStream os) throws IOException {
byte[] hdr = new byte[8];
@@ -2019,11 +2047,10 @@ public final class SWF implements SWFContainerItem, Timelined, Openable {
case 'c':
case 'z':
case 'f':
HarmanDecryption dec = new HarmanDecryption();
try {
is = dec.decrypt(is, hdr); //Note: this call will uppercase hdr[0]
byte[] decrypted = HarmanSwfEncrypt.decrypt(is, hdr); //Note: this call will uppercase hdr[0]
os.write(hdr);
Helper.copyStream(is, os);
os.write(decrypted);
return true;
} catch (IOException | InvalidAlgorithmParameterException | InvalidKeyException | NoSuchAlgorithmException | BadPaddingException | IllegalBlockSizeException | NoSuchPaddingException ex) {
throw new SwfOpenException(AppResources.translate("error.swf.decryptionProblem"));
@@ -2091,14 +2118,16 @@ public final class SWF implements SWFContainerItem, Timelined, Openable {
case 'c':
case 'z':
case 'f':
header.encrypted = true;
HarmanDecryption dec = new HarmanDecryption();
header.encrypted = true;
byte[] decrypted;
try {
is = dec.decrypt(is, hdr); //Note: this call will uppercase hdr[0]
} catch (IOException | InvalidAlgorithmParameterException | InvalidKeyException | NoSuchAlgorithmException | BadPaddingException | IllegalBlockSizeException | NoSuchPaddingException ex) {
decrypted = HarmanSwfEncrypt.decrypt(is, hdr);
} catch (IOException | NoSuchPaddingException | NoSuchAlgorithmException | InvalidKeyException | InvalidAlgorithmParameterException | IllegalBlockSizeException | BadPaddingException ex) {
throw new SwfOpenException(AppResources.translate("error.swf.decryptionProblem"));
}
}
is = new ByteArrayInputStream(decrypted);
break;
}
switch (hdr[0]) {