private TextSecureAttachmentPointer createAttachmentPointer(
MasterSecret masterSecret, PduPart part) throws InvalidPartException {
try {
MasterCipher masterCipher = new MasterCipher(masterSecret);
long id = Long.parseLong(Util.toIsoString(part.getContentLocation()));
byte[] key =
masterCipher.decryptBytes(Base64.decode(Util.toIsoString(part.getContentDisposition())));
String relay = null;
if (part.getName() != null) {
relay = Util.toIsoString(part.getName());
}
return new TextSecureAttachmentPointer(id, null, key, relay);
} catch (InvalidMessageException | IOException e) {
Log.w(TAG, e);
throw new InvalidPartException(e);
}
}
