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go-merkletree's Issues

feat: AddWord / UpdateWord

  1. change Node struct, add KeyPreimage: byte32 and ValuePreimage: byte32.
  2. fix (de)serialization: NewNodeFromBytes and func (n *Node) Value() []byte
  3. add AddWord / UpdateWord function similar to Add / Update but parameter is byte32 rather than big.int. Key/Value word should first be hashed ( poseidon_hash(first16bytes as bigint, last16bytes as bigint) ) to get key/value bigint, then old Add/Update is called)
  4. add func (mt *MerkleTree) GetLeafNode(k *big.Int) (*Node. Most codes in Get() will be moved into this function, and behavior of Get() will not break
  5. add func (mt* MerkleTree) GetLeafNodeByWord(k byte32) , so we can get the real byte32 value.
  6. add a test covering Add / Update / Get with byte32.

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