Nagravision S.a.

Nagra Plus S.a.

Andre Kudelski

Marco Sasselli

Laurent Laffely

Bertrand Wendling

Nicolas Fischer

Jerome Perrine

Bernard Benoit

Jean-Claude Fournier

Christophe Nicolas

Philippe Stransky

In order to allow an access to the Internet, and therefore to a remote server, for a device having no connection with an Internet gateway, a method is provided to transmit a message from a first device to a remote server, the first device having no connection with the remote server. The method includes detecting a second device by the first device, establishing a communication channel between the first and the second device, transferring the message from the first to the second device, the message comprising an address of the remote server, and transferring, by the second device, the message to the remote server using the remote server address contained in the message.

Method to transmit messages between a device and a remoter server

A method of programming a device comprising acquiring configuration data, loading the configuration data onto a programmable device, processing at least a portion of the configuration data through a one way function to form processed configuration data, and configuring at least one configurable module of the programmable device using the processed configuration data from the processing step.

Flexible cryptographic device

In order to allow access to the Internet, and therefore to a remote server, for a device having no connection with an Internet gateway, there is provided a method to transmit a message from a first device to a remote server, the first device having no connection with the remote server, the method including detecting a second device by the first device, establishing a communication channel between the first and the second device, transferring the message from the first to the second device, the message comprising an address of the remote server, and transferring, by the second device, the message to the remote server using the remote server address contained in the message.

In order to allow an access to the Internet, and therefore to a remote server, for a device having no connection with an Internet gateway, there is proposed a method to transmit a message from a first device to a remote server, the first device having no connection with the remote server, said method comprising:

In order to allow an access to the Internet, and therefore to a remote server, for a device having no connection with an Internet gateway, a method to transmit a message from a first device to a remote server, the first device having no connection with the remote server, the method including detecting a second device by the first device, establishing a communication channel between the first and the second device, transferring the message from the first to the second device, the message including an address of the remote server, transferring, by the second device, the message to the remote server using the remote server address contained in the message.

An apparatus includes an audio-sensor inhibitor configured to inhibit detection of sound by an audio sensor of a communication device, and a secure communication interface coupled to the audio-sensor inhibitor, the secure communication interface being configured to transmit encrypted audio data from the secure communication interface to the communication device, wherein the communication interface generates audio data using a secure-interface audio sensor, and generates the encrypted audio data by encrypting the audio data using a cryptographic module.

Methods and systems for conveying encrypted data to a communication device

An embodiment takes the form of an accessory for attachment to a communication device, the accessory comprising a microphone disposed on the accessory to detect sound, a cryptographic module disposed on the accessory in communication with the microphone to generate encrypted audio data based on the detected sound, a communication interface disposed on the accessory in communication with the cryptographic module configured to convey the encrypted audio data to the communication device, and an audio-sensor inhibitor arranged to be positioned adjacent to a communication-device audio sensor.

A method for controlling access to a plurality of channels by a unit comprising a security module, each channel being encrypted by a specific control word and having a channel identifier, this method comprising the steps of: tuning to a first channel having first channel identifier and receiving first messages containing a first control word; decrypting the first messages and using the first control word; storing the first control word and the first channel identifier; tuning to a second channel having second channel identifier; calculating the second control word by: calculating a root control word with an inverse cryptographic function Fusing the first control word and the first channel identifier; calculating the second control word with the cryptographic function F using the root control word and the second channel identifier; and using the second control word to access the second channel.

Method for controlling access to a plurality of channels by a receiver/decoder

A secure system-on-chip for processing data, the system-on-chip comprising at least a central processing unit (CPU), an input and an output channel, an encryption/decryption engine and a memory, wherein, said input channel comprises an input encryption module to encrypt all incoming data, said output channel comprising an output decryption module to decrypt all outgoing data, said CPU receiving the encrypted data from the input encryption module and storing them in the memory, and while processing the stored data, said CPU reading the stored data from the memory, requesting decryption of same in the encryption/decryption engine, processing the data and requesting encryption of the result by the encryption/decryption engine and storing the encrypted result, outputting the result to the output decryption module for decryption purpose and exiting the decrypted result via the output channel.

Growing community of inventors

Cheseaux-sur-Lausanne, Switzerland

Andre Kudelski