A novel cryptographic key technique

2012 ◽  
Author(s):  
Quist-Aphetsi Kester ◽  
Paul Danquah
Keyword(s):  
Cryptographic Key

scholarly journals Protocol based on compressed sensing for high-speed authentication and cryptographic key distribution over a multiparty optical network

2013 ◽  
Vol 52 (33) ◽  
pp. 7882 ◽  
Author(s):  
Wen-Kai Yu ◽  
Shen Li ◽  
Xu-Ri Yao ◽  
Xue-Feng Liu ◽  
Ling-An Wu ◽  
...  
Keyword(s):  
Compressed Sensing ◽  
High Speed ◽  
Optical Network ◽  
Key Distribution ◽  
Cryptographic Key

Stability assessment of QKD procedures in commercial quantum cryptography systems versus quality of dark channel

2015 ◽  
Vol 13 (08) ◽  
pp. 1550064
Author(s):  
Monika Jacak ◽  
Damian Melniczuk ◽  
Janusz Jacak ◽  
Ireneusz Jóźwiak ◽  
Jacek Gruber ◽  
...  
Keyword(s):  
Quantum Key Distribution ◽  
Statistical Data ◽  
Statistical Data Analysis ◽  
Quantum Bit ◽  
Channel Quality ◽  
Dark Channel ◽  
Cryptographic Key ◽  
Entangled Photon Pairs ◽  
The Stability

In order to assess the susceptibility of the quantum key distribution (QKD) systems to the hacking attack including simultaneous and frequent system self-decalibrations, we analyze the stability of the QKD transmission organized in two commercially available systems. The first one employs non-entangled photons as flying qubits in the dark quantum channel for communication whereas the second one utilizes the entangled photon pairs to secretly share the cryptographic key. Applying standard methods of the statistical data analysis to the characteristic indicators of the quality of the QKD communication (the raw key exchange rate [RKER] and the quantum bit error rate [QBER]), we have estimated the pace of the self-decalibration of both systems and the repeatability rate in the case of controlled worsening of the dark channel quality.

scholarly journals Detection of Forgery and Fabrication in Passports and Visas using Cryptography and QR Codes

2021 ◽  
Vol 12 (1) ◽  
pp. 1-11
Author(s):  
Cheman Shaik
Keyword(s):  
Mobile App ◽  
Public Key ◽  
Qr Code ◽  
Clear Indication ◽  
Qr Codes ◽  
The Public ◽  
Private Key ◽  
The World ◽  
Cryptographic Key ◽  
Google Play

In this paper, we present a novel solution to detect forgery and fabrication in passports and visas using cryptography and QR codes. The solution requires that the passport and visa issuing authorities obtain a cryptographic key pair and publish their public key on their website. Further they are required to encrypt the passport or visa information with their private key, encode the ciphertext in a QR code and print it on the passport or visa they issue to the applicant. The issuing authorities are also required to create a mobile or desktop QR code scanning app and place it for download on their website or Google Play Store and iPhone App Store. Any individual or immigration uthority that needs to check the passport or visa for forgery and fabrication can scan its QR code, which will decrypt the ciphertext encoded in the QR code using the public key stored in the app memory and displays the passport or visa information on the app screen. The details on the app screen can be compared with the actual details printed on the passport or visa. Any mismatch between the two is a clear indication of forgery or fabrication. Discussed the need for a universal desktop and mobile app that can be used by immigration authorities and consulates all over the world to enable fast checking of passports and visas at ports of entry for forgery and fabrication

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