| 摘要 |
<p>The invention concerns a method for preventing decryption of a file of keys of a set of data stored on a storage unit (DB) of a decoder (STB), the latter comprising a security module (SM), which may enable numerous malevolent users to take advantage of said product illegally. Said method consists in retrieving from a flow of encrypted data the data to be sent to the storage unit (DB) and in re-encrypting the data before transferring them into the storage unit (DB) with at least a unique key (K1, K2).</p> |
