TH48058B - How to keep data encrypted - Google Patents

Abstract

DC60 (09/04/45) The purpose of this invention is to provide a method to prevent the removal of Cipher key files of packets The decoder contains a security module to prevent unwanted users from accessing the storage. Well, get a lot. Unlawful use of this product This approach consists of extracting data from the encrypted data flux for sending to storage (DB) and for encrypting the data. Again before sending them to storage (DB) with at least one unique key (K1, K2). The purpose of this invention is to provide a method to prevent the removal of Cipher key files of packets The decoder contains a security module to prevent unwanted users from accessing the storage. Well, get a lot. Unlawful use of this product This approach consists of extracting data from the encrypted data flux for sending to storage (DB) and for encrypting the data. Again before sending them to storage (DB) with at least one unique key (K1, K2).

Claims (7)

Disclaimers (all) that will not appear on the advertisement page: 1. a method for storing data that comes from an encrypted stream. This is sent to a decoder (STB) that is connected to the security module (SM) and connected to the storage (DB) where this method consists of another encryption switch. Without previous decryption in the decoder, the encrypted data is sent to the decoder. Before being transferred to the unit Store (DB) with a unique key. (K1, K2) at least one 2. Method according to claim 1 which has special characteristics is the method This consists of using a key (K1), specific to the Security Module (SM), as a single key. 3. Method according to claim 1 which has special characteristics is the method This consists of the use of a key (K2) that is specific to a decoder (STB) as a single key. 4. Method according to claim 1 which has special characteristics is the method This consists of Encrypt data continuously with multiple keys, either the security module's (K1) key and the decoder's (K2) key, or vice versa. 5. Methods according to claims 1 to 4, which have special characteristics. This method consists of Encrypting the data sent to the storage (DB) with the cryptographic key (K3) contained in the storage (DB). 6. Method for any 1 to 2 claim which has A special feature is information. That is to be encrypted is sent to a security module (SM) that is to be encrypted, then the encrypted data is sent to the storage (DB). 7. Procedures in accordance with any 1 to 3 claim which has The effect is this method. Contains encryption operations Secret or decryption in the low level interface between the storage (DB) and the decoder (STB).