Method and apparatus for trusted computing

An isolated processor comprising:

• a trusted execution environment and an isolated storage including computer program code, the isolated storage and the computer program code configured to, with the trusted execution environment, cause the isolated processor at least to perform:
• receiving encrypted data that is encrypted with a first public key;
• decrypting the encrypted data with a first private key;
• performing calculation on the decrypted data by using an approved program;
• and
• providing a calculation result,
• wherein the approved program is authorized by a smart contract, a unique identifier of the smart contract is stored in the isolated processor, both the approved program and the isolated processor are verified by at least one participant of the smart contract, and the first public key and the first private key are generated by the isolated processor.