Sains Malaysiana 48(12)(2019): 2797–2806

http://dx.doi.org/10.17576/jsm-2019-4812-21

Design of Information Hiding Algorithm for Multi-Link Network Transmission Channel

(Reka Bentuk Maklumat Algoritma Sembunyi untuk Saluran Penghantaran Rangkaian Berbilang Pautan)

SONGYIN FU & RANGDING WANG*

Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo, 315211, China

Diserahkan: 21 Februari 2019/Diterima: 23 Disember 2019

ABSTRACT

Traditional channel information hiding algorithms based on m-sequence for multi-link network transmission, which apply m-sequence to channel coding information hiding system, do not analyze the upper limit of hiding capacity of multi-link network transmission channel system, and do not consider the hidden danger of overlapping secret information when embedding secret information is too large. It has the defects of low efficiency, poor accuracy and large storage cost. This paper designs an information hiding algorithm for multi-link network transmission channel based on secondary positioning, it uses RS code M public key cryptosystem to pre-process secret information and improve the security of information; calculates the upper limit of hiding capacity of multi-link network transmission channel system through information hiding capacity analysis model, and determines whether the hiding capacity exceeds the secret information. Secondary location and cyclic shift mechanism are introduced to improve the randomness of location selection and avoid overlapping of secret information. The experimental results show that the proposed algorithm has a great advantage in memory cost. When the channel SNR is 0 dB and 8 dB, the normalization coefficients are 0.87 and 1.04, respectively. This shows that the algorithm has a high accuracy in extracting secret information. The average time spent on hiding information is 2.04 s, indicating that the algorithm has high information hiding rate and storage efficiency.

Keywords: Coding channel; information hiding; multi-link; network transmission channel; preprocessing; secondary embedding

ABSTRAK

Saluran tradisi algoritma penyembunyian maklumat berdasarkan jujukan-m untuk penyampaian rangkaian berbilang pautan yang menggunakan jujukan-m untuk menyalurkan maklumat pengekodan sistem sembunyi tidak menganalisis had atas kapasiti sembunyi sistem saluran penghantaran rangkaian berbilang pautan dan tidak mempertimbangkan bahaya tersembunyi akibat pertindihan maklumat rahsia apabila pembenaman maklumat rahsia adalah terlalu besar. Ia mempunyai kecacatan kecekapan yang rendah, ketepatan yang lemah dan kos storan yang tinggi. Kertas ini mereka bentuk algoritma penyembunyikan maklumat untuk penghantaran saluran rangkaian berbilang pautan berdasarkan kedudukan sekunder, ia menggunakan sistem kripto kunci awam RS kod M untuk prapemprosesan maklumat rahsia dan meningkatkan keselamatan maklumat; menghitung had atas kapasiti sembunyi sistem penghantaran saluran rangkaian berbilang pautan melalui model analisis kapasiti penyembunyian maklumat dan menentukan sama ada kapasiti persembunyian melebihi maklumat rahsia. Lokasi sekunder dan mekanisme peralihan kitaran diperkenalkan untuk menambahbaik pemilihan lokasi secara rawak dan mengelakkan pertindihan maklumat rahsia. Hasil uji kaji menunjukkan bahawa algoritma yang dicadangkan mempunyai kelebihan yang besar dalam kos ingatan. Apabila saluran SNR adalah 0 dB dan 8 dB, pekali penormalan masing-masing adalah 0.87 dan 1.04. Ini menunjukkan bahawa algoritma mempunyai ketepatan yang tinggi dalam mengekstrak maklumat rahsia. Masa purata yang digunakan untuk menyembunyikan maklumat adalah 2.04 s, menunjukkan bahawa algoritma ini mempunyai kadar penyembunyian maklumat yang tinggi dan kecekapan penyimpanan.

Kata kunci: Berbilang pautan; pembenaman sekunder; penyembunyian maklumat; prapemprosesan; saluran pengekodan; saluran penghantaran rangkaian

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*Pengarang untuk surat-menyurat; email: wangrangding@nbu.edu.cn