The Applications of Blockchain in the Covert Communication

Table 5

Transaction structure in Ethereum.

Type	Name	Description	Length
Address	From	The account of sender	Up to 20 bytes
Address	To	The account of receiver. If empty, create a contract.	Up to 20 bytes
Gas	Gas limit	Estimated maximum gas	Up to 32 bytes
Gas	Gas price	The price to cost ether	Up to 32 bytes
Value	VALUE	The amount of ether	Up to 32 bytes
Input	INPUT	An arbitrary message, or a code segment to create a contract, or a function call to a contract	0-about 700 KB