A Metaheuristic Approach for Encrypting Blockchain Data Attributes Using Ciphertext Policy Technique

Table 2

The description of symbols.

Symbol	Symbol definition
SK	The attribute private key in the BES-CP scheme corresponding to the user
MK; PK	The master key and public parameters in the MK, PK BES-CP scheme
Upk; Usk	The public and private keys of users in the original Hyperledger network of USK
Ucert	User certificate in the original Hyperledger network
M; CT	Plaintext data and encrypted ciphertext