@Override
public boolean isOwnerAuthorised() {
for (final PDFDecrypter decrypter : decrypters.values()) {
if (decrypter.isOwnerAuthorised()) {
return true;
}
}
return false;
}
@Override
public boolean isEncryptionPresent() {
for (final PDFDecrypter decrypter : decrypters.values()) {
if (decrypter.isEncryptionPresent()) {
return true;
}
}
return false;
}
@Override
public ByteBuffer decryptBuffer(String cryptFilterName, PDFObject streamObj, ByteBuffer streamBuf)
throws PDFParseException {
final PDFDecrypter decrypter;
if (cryptFilterName == null) {
decrypter = defaultStreamDecrypter;
} else {
decrypter = decrypters.get(cryptFilterName);
if (decrypter == null) {
throw new PDFParseException("Unknown CryptFilter: " + cryptFilterName);
}
}
return decrypter.decryptBuffer(
// elide the filter name to prevent V2 decrypters from
// complaining about a crypt filter name
null,
// if there's a specific crypt filter being used then objNum
// and objGen shouldn't contribute to the key, so we
// should make sure that no streamObj makes its way through
cryptFilterName != null ? null : streamObj,
streamBuf);
}
@Override
public String decryptString(int objNum, int objGen, String inputBasicString)
throws PDFParseException {
return defaultStringDecrypter.decryptString(objNum, objGen, inputBasicString);
}
@Override
public boolean isEncryptionPresent(String cryptFilterName) {
PDFDecrypter decrypter = decrypters.get(cryptFilterName);
return decrypter != null && decrypter.isEncryptionPresent(cryptFilterName);
}
