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检索条件"主题词=cryptographic turbo code"

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cryptographic turbo code for Image Transmission over Mobile Networks 5

Cryptographic Turbo Code for Image Transmission over Mobile ...

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International Conference on Advances in Computing, Communications and Informatics (ICACCI)

作者： Sawant, Vidya Bhise, Archana NMIMS Univ Mukesh Patel Sch Technol Management & Engn Bombay Maharashtra India

ISBN: (纸本)9781509020287

Mobile communication has become an essential part of our daily life for accessing and sharing data over internet in addition to voice communication. Mobile communication channel is an open network and hence maintaining the confidentiality and reliability of the data has always been an area of concern. Reliability of data against channel noise can be ensured by various error correcting codes. turbo code (TC) is an excellent channel encoder with near Shannon limit error correction performance. However, TC does not guarantee the security of the transmitted image against intruders on the wireless channel. Proposed cryptographic turbo code (CTC) is a modification of the existing TC to provide encryption and error correction as a single entity. Encryption of data is achieved by the proposed Elliptic Curve cryptographic Interleaver (ECCI) of CTC. The ECCI is an asymmetric private key interleaver which shuffles the input bit sequence based on the Elliptic Curve (EC) arithmetic and a private key. Shuffling the bits also reduces its correlation and improves the error correction performance of the code. The CTC ensures the secrecy of the shared private keys over an insecure wireless channel by Elliptic Curve Diffie-Hellman Key Exchange (ECDHKE). This makes the CTC robust against cryptographic attacks. The qualitative and quantitative performance analysis of the proposed code is evaluated to validate its effectiveness for image transmission over a mobile network in contrast to other state-of-art methods. Simulation results illustrate a similar coding gain, Peak Signal to Noise Ratio (PSNR) and Mean Square Error (MSE) for images retrieved by the proposed CTC, encrypted TC and TC for authorized users. Additionally, it ensures security of the data from unauthorized users as compared to TC. Investigation results also depict the strength of CTC against Brute Force, known plaintext, chosen plaintext and cipher text attacks.

关键词： Bit error rate cryptographic turbo code convolutional encoder elliptical curve cryptographic interleaver

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Modified cryptographic turbo code for Sensitive Information

Modified Cryptographic Turbo Code for Sensitive Information

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IEEE Wireless Communications and Networking Conference (WCNC)

作者： Sawant, Vidya Bhise, Archana NMIMS Univ Mukesh Patel Sch Technol Management & Engn Dept Elect & Telecommun Engn Bombay Maharashtra India

ISBN: (纸本)9781509041831

A variety of photo sharing applications overmobile networks have gained popularity in recent years. The mobile network is a public network and is highly vulnerable to security attacks. This makes it essential to deploy cryptographic algorithms to address the security issues. However, the encrypted data when transmitted over the mobile network is vulnerable to the channel noise and is improved by various error correction codes. The sequential process of encryption followed by error correction code adds to the resources, computational power and time of the overall system. The proposed Modified cryptographic turbo code (MCTC) integrates the error correction and encryption into a single entity to ensure reliability and security of the image over an open communication channel. Additionally it provides dual level of security to the sensitive portion of the image by hiding it in the less sensitive portion. The proposed MCTC depicts a similar bit error performance as that of turbo code (TC) for a 0.7 dB rise in per bit energy. The accuracy of the image recovered by MCTC is compared with Least Significant Bit and Least Significant Bit Hamming code data hiding methods followed by TC known as LSBTC and LSBHCTC respectively. The analysis shows 99.99 % accuracy in the recovered bits as compared to 93.72 % and 98.44 % for LSBTC and LSBHCTC over an AWGN channel for 3dB SNR respectively. Moreover, the MCTC provides a higher embedding capacity of 26.5% as compared to 11% and 5% for LSBTC and LSBHCTC.

关键词： cryptographic turbo code elliptic curve cryptographic interleaver sensitive data hiding scheme modified cryptographic turbo code

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