Secure data control apparatus and method

摘要

A secret data management apparatus includes an image display unit (10) which displays an image on a display monitor (4). A position/sequence input unit (12) inputs positions of input image points on the image using an input device (6) and inputs a sequence of the positions using the input device. An encryption unit (14) generates encrypted data of a secret key based on the positions and the sequence from the position/sequence input unit (12). A secret data storage unit (16) stores the encrypted data of the secret key from the encryption unit (14) in a storage medium. An access allowance unit (18) allows access to the secret key stored in the storage medium when positions of input image points on the image and a sequence of the positions, subsequently specified using the input device at a time of the access, match with the positions and the sequence from the position/sequence input unit (12). A decryption unit (20) generates plain data of the secret key from the encrypted data stored in the storage medium when the access is allowed by the access allowance unit (18). <IMAGE>