Keeping a Secret for a Whole Day

Ivars Peterson

Erica Klarreich

Anna Lysyanskaya

David Lindley

Researchers have securely contained a single bit for a record 24 hours, during which it was inaccessible to both sender and recipient, a technology that could be useful for voting or bidding.

Chandni Akbar, Hassan Mahmood, Qurratul-Ain Minhas +1 more

Now-a-days, secure communication is a significant characteristic that should be proficient to accommodate increasing demand of wireless communication. The fundamental principle of secure communication is the extraction of secret key and keeping this secret. In this paper, we propose innovative approach for secret key extraction and reconciliation. We exploit channel reciprocity through relative calibration and use this reciprocal channel as a secret key between two legitimate users. In this method, there is no physical sharing of key between users so that eavesdropper could not interfere the confidential communication. We also prove that this algorithm is more secure as compare to other algorithms. We use AES algorithm for reconciliation of secret key for secure communication.

Malcolm S. Longair

Born's reaction In his reminiscences, Born recounted his memories of these exciting days (Born, 1978): ‘Meanwhile Heisenberg pursued some work of his own, keeping its idea and purpose somewhat dark and mysterious. Towards the end of the summer semester, in the first days of July 1925, he came to me with a manuscript and asked me to read it and decide whether it was worth publishing … He added that though he had tried hard, he could not make any progress beyond the simple considerations contained in his paper, and he asked me to try myself, which I promised … His most audacious step consists in the suggestion of introducing the transition amplitudes of the coordinates q and momenta p in the formulae of mechanics … I was most impressed by Heisenberg's considerations, which were a great step forward in the programme which we had pursued … After having sent Heisenberg's paper to Zeitschrift für Physik for publication, I began to ponder about his symbolic multiplication, and was soon so involved in it that I thought the whole day and could hardly sleep at night. For there was something fundamental behind it … And one morning … I suddenly saw the light: Heisenberg's symbolic multiplication was nothing but matrix calculus, well known to me since my student days from the lectures of Rosanes at Breslau.’