ENCRYPTION DEVICE AND METHOD FOR PROTECTING A MASTER KEY

摘要

Disclosed is a method for generating a session key from a master key protected based on a white-box cryptography. The method of the present invention comprises the following steps: generating a synthesizing function which synthesizes a block encryption algorithm and a master key to be used to implement the white-box cryptography; configuring the generated synthesizing function with a lookup table; encoding the configured lookup table by using an encoding table based on the white-box cryptography; and generating a session key by using an encoded result.