| 摘要 |
PROBLEM TO BE SOLVED: To secure high security when decoding encryption data that are stored and passed from an authentication device to an authentication key by an encryption data decoding device. SOLUTION: A photo viewer storage 1 generates a cipher key and a decipher key based on the fingerprint information of a user, encrypts CH data for ad hoc based on the cipher key, and stores the encryption data and CH data for authentication at an authentication key 3. The authentication key 3 is passed to the side of a digital camera 2. The digital camera 2 reads the CH data for authentication from the authentication key 3, establishes communication by a channel for authentication, and sends the fingerprint information of the user acquired at the side of the digital camera 2 to the photo viewer storage 1. The photo viewer storage 1 authenticates the digital camera 2 based on both the fingerprint information, and sends the decipher key to the digital camera 2. The digital camera 2 decodes the encryption data by the decipher key, and establishes communication by the channel for ad hoc at an area to the photo viewer storage 1. COPYRIGHT: (C)2007,JPO&INPIT
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