Cannot send hashed data through ManageDataOperation

Question

I am trying to send a data hashed using SCryptUtil provided by com.lambdaworks.crypto.SCryptUtil, convert it into array of bytes and send it to the stellar network using ManageDataOperation.Builder

My code is as follows

        String hash = SCryptUtil.scrypt("HashData", 16384, 8, 1);

        byte[] hashByte = hash.getBytes();

        ManageDataOperation.Builder updateHashedData = new ManageDataOperation.Builder("Hashed Data", hashByte);

        Transaction tt = new Transaction.Builder(sourceAccount)
                        .addOperation(updateHashedData.build())
                        .addMemo(Memo.text("Test 
                        Transaction")).setTimeout(1000).build();            

The data is not sent to the server. But when I use a simple string for the "hash" variable like "Password", it gets sent. What am I missing here? Is there a way to send long hashcodes to stellar account in this way?

Answer 1

The value of ManageDataOperation is limited in length (hashByte.length <= 64), if the length is exceeded, the submission will fail.