Inserts new leaf into the trie @param id @param data

@param hex The hex string to be decoded @return An array of bytes represented by the <b>hex</b> argument @throws IllegalArgumentException If string

recomputes hash if necessary and returns it Client should never change the bytes! @return root hash

Takes the keccak hash (32 bytes) of data and returns the ECDSA signature @param messageHash - @return - @throws IllegalStateException

Convert a byte-array into a hex String.<br> Works similar to {@link Hex#toHexString} but allows for <code>null</code> @param data - byte-array to con

Checks if a node with specific data exists in a trie (subtrie) @param id @param data @return

Gets the encoded public key value. @return 65-byte encoded public key