DATA PROCESSING APPARATUS, DATA PROCESSING METHOD, AND PROGRAM

摘要

An information leakage prevention apparatus 100 receives, from a LAN 109, communication data transmitted by a PC 112 to Internet 111, and when the received data has been encrypted, analyzes a log describing content of data processing performed in the PC 112 and extracts a key used to encrypt the communication data in the PC 112. Further, the information leakage prevention apparatus 100 decrypts the communication data using the extracted key and determines whether or not a keyword is included in a decryption result. If the keyword is not included in the decryption result, the information leakage prevention apparatus 100 transmits the communication data to the Internet 111 through a WAN 110.

主权项

1. A data processing apparatus connected with a first communication path and a second communication path and connected with a communication apparatus through the first communication path, the data processing apparatus comprising:
a receiving unit to receive, from the first communication path, data transmitted by the communication apparatus to the second communication path; a key extracting unit to, when the data received by the receiving unit has been encrypted, extract a key used to encrypt the data in the communication apparatus by analyzing a log describing content of data processing which has been performed in the communication apparatus; a decryption unit to decrypt the data using the key extracted by the key extracting unit; a keyword search unit to determine whether or not a keyword is included in a decryption result by the decryption unit; and a transmitting unit to transmit the data to the second communication path when the keyword search unit determines that the keyword is not included in the decryption result.