Implementation of cryptography algorithm for video on FPGA
2016
Advances in digital media content transmission have increased in the past few years. Security
of multimedia data is an imperative issue because of fast improvement of digital data exchanges over
an unsecured network. Multimedia data security is achieved by methods of cryptography, which deals
with encryption of data. Standard symmetric encryption algorithms provide better security for the
multimedia data, but applying symmetric key encryption algorithm on more complex multimedia data
we face computational problem. Over the last few years, several encryption algorithms have applied
to secure video transmission. While a large number of multimedia encryption schemes have been
proposed in the literature and some have been used in real time applications, cryptanalytic work has
shown the existence of security problems and other weaknesses in most of the proposed multimedia
encryption schemes. Encryption is a common technique to uphold multimedia security. MPEG video
stream is quite different from traditional textual data because inter frame dependencies exist in
MPEG video. Special MPEG video encryption algorithms are required because of their special
characteristics, such as coding structure, large amount of data and real-time constraints. Image and
video encryption have applications in various fields including internet communication, multimedia
systems, medical imaging, and military communication. The Advanced Encryption Standard (AES)
algorithm is used and modified it, to reduce the calculation of the algorithm and for improving the
encryption performance.
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