Abstract:
The inventive method for reading data received in the protected form consists in transmitting at least certain protected data to a protection removing tool. The protected data is retrieved from a buffer memory of a read stream of said data and is transmitted to the protection removing tool by a security message router. To transmit between said security message router and the protection removing tool, data is recorded in assigned transfer frames.
Abstract:
Digital data blocks are encrypted, each data block that is to be encrypted being associated with a time reference. A value of an initialization vector Vi and an encryption key K are defined. Then, a counter C is obtained for each data block to be encoded, by combining the time reference and the value of the initialization vector. A series of binary encryption elements is obtained via an encryption function taking the encryption key K and counter C as input parameters. The data block is then encrypted by combining it with the series of binary encryption elements.
Abstract:
Digital data blocks are encrypted, each data block that is to be encrypted being associated with a time reference. A value of an initialization vector VI and an encryption key K are defined. Then, a counter C is obtained for each data block to be encoded, by combining the time reference and the value of the initialization vector. A series of binary encryption elements is obtained via an encryption function taking the encryption key K and counter C as input parameters. The data block is then encrypted by combining it with the series of binary encryption elements.