Image encryption system based on a nonlinear joint transform correlator for the simultaneous authentication of two users
We propose a new encryption system based on a nonlinear joint transform correlator (JTC) using the information of two biometrics (one digital fingerprint for each user) as security keys of the encryption system. In order to perform the decryption and authentication in a proper way, it is necessary t...
| Autores: | , , |
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| Formato: | artículo |
| Fecha de publicación: | 2019 |
| País: | España |
| Recursos: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/175040 |
| Acesso em linha: | https://hdl.handle.net/2117/175040 https://dx.doi.org/10.3390/photonics6040128 |
| Access Level: | acceso abierto |
| Palavra-chave: | Data encryption (Computer science) Optical correlators Nonlinear optics Physical optics Image encryption Joint transform correlator (JTC) Authentication Xifratge (Informàtica) Òptica no lineal Òptica física Fourier, Transformacions de -- Òptica Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica::Fotònica Àrees temàtiques de la UPC::Ciències de la visió::Òptica física |
| Resumo: | We propose a new encryption system based on a nonlinear joint transform correlator (JTC) using the information of two biometrics (one digital fingerprint for each user) as security keys of the encryption system. In order to perform the decryption and authentication in a proper way, it is necessary to have the two digital fingerprints from the respective users whose simultaneous authentication is pursued. The proposed security system is developed in the Fourier domain. The nonlinearity of the JTC along with the five security keys given by the three random phase masks and the two digital fingerprints of the two users allow an increase of the system security against brute force and plaintext attacks. The feasibility and validity of this proposal is demonstrated using digital fingerprints as biometrics in numerical experiments. |
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