Digital authentication over acoustic channel
Номер патента: EP1654688A2
Опубликовано: 10-05-2006
Автор(ы): Ahmad Jalali, Alexander Gantman, Gregory G. Rose, Jack Steenstra, John W. Ii Noerenberg
Принадлежит: Qualcomm Inc
Опубликовано: 10-05-2006
Автор(ы): Ahmad Jalali, Alexander Gantman, Gregory G. Rose, Jack Steenstra, John W. Ii Noerenberg
Принадлежит: Qualcomm Inc
Реферат: Apparatus and method are disclosed for digital authentication and verification. In one embodiment, authentication involves storing a cryptographic key and a look up table (LUT), generating an access code using the cryptographic key; generating multiple parallel BPSK symbols based upon the access code; converting the BPSK symbols into multiple tones encoded with the access code using the LUT; and outputting the multiple tones encoded with the access code for authentication. In another embodiment, verification involves receiving multiple tones encoded with an access code; generating multiple parallel BPSK symbols from the multiple tones; converting the BPSK symbols into an encoded interleaved bit stream of the access code; de-interleaving the encoded interleaved bit stream; and recovering the access code from the encoded de-interleaved bit stream.
Digital authentication over acoustic channel
Номер патента: WO2005013180A3. Автор: Ahmad Jalali,Alexander Gantman,Gregory G Rose,Jack Steenstra,John W Ii Noerenberg. Владелец: John W Ii Noerenberg. Дата публикации: 2007-05-18.