پنهان‌سازی و افزایش امنیت سیگنال در کانال صوتی- نوری مبتنی بر دامنه فوریه کسری و بازیابی فاز(G-S)

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه مهندسی برق، واحد بیضا، دانشگاه آزاد اسلامی، بیضا، ایران

2 دانشکده مهندسی برق دانشگاه علوم و فنون هوایی شهید ستاری

3 گروه مهندسی آب، واحد شیراز، دانشگاه آزاد اسلامی، شیراز، ایران

چکیده
در این مقاله به بررسی یک روش رمزگذاری سیگنال صوتی مبتنی بر الگوریتم بازیابی فاز گرچبرگ-ساکستون در حوزه تبدیل فوریه کسری پرداخته و یک مدل ترکیبی به منظور ایجاد امنیت و پنهان سازی داده ها در کانال های اطلاعاتی ارائه شده است. این الگوریتم ابتدا سیگنال صوتی اصلی را به فرمت تصویر کدگذاری و آن را رمزگذاری می‌کند. متعاقباً، الگوریتم بازیابی فاز G-S در حوزه فوریه کسری به منظور استخراج اطلاعات فاز سیگنال صوتی استفاده می‌شود. بر این اساس، فاز صوتی اصلی با یک فاز مرجع که نشان دهنده اطلاعات مخفی است جایگزین می گردد تا جاگذاری اطلاعات حاصل شود. این فناوری توانایی تولید دو نوع کلید مختلف را مطابق با الزامات رمزگذاری را شامل می شود که این امر دشواری رمزگشایی و تضمین امنیت اطلاعات را افزایش می‌دهد. در نهایت، تصویر رمزگذاری شده را می‌توان رمزگشایی و به سیگنال صوتی اصلی بازیابی کرد. این طرح از طریق جایگزینی و بازیابی اطلاعات فاز، جاسازی و استخراج موثر اطلاعات مخفی در سیگنال‌های صوتی را محقق می‌کند در این طرح امنیت اطلاعات تا حدود 98 درصد افزایش چشم گیر داشته است.

کلیدواژه‌ها

موضوعات


عنوان مقاله English

Concealment and enhancement of signal security in the audio-optical channel based on fractional Fourier amplitude and phase recovery (G-S)

نویسندگان English

Gohar Varamini 1
Jalil Mazloum 2
Alireza Ghoami 3
1 Department of Electrical Engineering, Bey. C., Islamic Azad University, Beyza, Iran
2 Department of Electrical Engineering Shahid Sattari Aeronautical University of Science and Technology
3 Department of Water Engineering, Shi. C., Islamic Azad University, Shiraz, Iran
چکیده English

This paper examines an audio signal encoding method based on the Grachberg-Saxton phase recovery algorithm in the fractional Fourier transform domain and presents a hybrid model for providing security and data hiding in information channels. This algorithm first encodes the original audio signal into an image format and encrypts it.
This algorithm first encodes the original audio signal into an image format and encrypts it. Subsequently, the G-S phase recovery algorithm in the fractional Fourier domain is used to extract the phase information of the audio signal. Accordingly, the original audio phase is replaced with a reference phase representing the hidden information to achieve information embedding.
This technology includes the ability to generate two different types of keys according to the encryption requirements, which increases the difficulty of decryption and ensures information security.
Finally, the encrypted image can be decrypted and restored to the original audio signal. This scheme realizes the effective embedding and extraction of hidden information in audio signals through the replacement and recovery of phase information. In this scheme, information security has been significantly increased by about 98%

کلیدواژه‌ها English

"recovery algorithm"
"Grechberg-Saxton"
"information security"
" secret information"
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دوره 4، شماره 4
زمستان 1404
صفحه 60-73

  • تاریخ دریافت 01 دی 1404
  • تاریخ بازنگری 11 بهمن 1404
  • تاریخ پذیرش 20 فروردین 1405