| 摘要 |
<p>Encrypted data is prevented from being decrypted to avoid data leakage. The encrypted data obtained by encrypting data to be processed corresponds to an enumeration of header data (501) and multiple divisional encrypted data (502). Each of the divisional encrypted data (502) except for the last one contains information indispensable for decrypting the next divisional encrypted data (502). In the present invention, the first divisional encrypted data (502) is destroyed at appropriate timing to prevent the encrypted data from being decrypted.</p> |
