Abstract
In the commercial sphere, attempts at fraud and
counterfeiting have caused several problems for
manufacturers and the consumer market. In view of this
scenario, in order to promote greater reliability and security
in commercial transactions, several techniques are being used
to verify the authenticity of physical products. Among them,
the most used are QR Codes (Quick Response Code),
holographic stamps and RFID (Radio Frequency
Identification). In this work, a product authentication system
that uses the visual encryption developed by Naor and Shamir
is proposed. This system uses two computationally generated
masks that when overlapped allow visual authentication
without the need for any computational processing by the
customer. With visual encryption, this authentication system
was proposed by Cicareli in submitted work .