I figured the issue: In

DataFileChunk

class, I will have to change the types for

chunk_hash

and

data

from

String

to

BinaryValue

. In my

deserialize

method, I should hash byte array of

data

and the compare it with the byte array of

chunk_hash

:

dataFileChunk.data = list.get(8).asBinaryValue();
output.write(dataFileChunk.data.asByteArray());

dataFileChunk.dataByteArray = dataFileChunk.data.asByteArray();
assert md != null;
    md.update(dataFileChunk.data.asByteArray());
    byte[] bts = md.digest();

    String s1 = Base64.getEncoder().encodeToString(bts);
    String s2 = Base64.getEncoder().encodeToString(dataFileChunk.chunk_hash.asByteArray());