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- W4313194129 abstract "The need for data security in communication is increasing with the developing
 technology. The best way to ensure data security is cryptography. Humanity has
 proposed many cryptography methods for hundreds of years. Today, there are
 complex cryptography algorithms, which are quite secure but require high processing
 power. Cryptography techniques used in the past are less secure but require less
 processing power. This article proposes an extended version of the Vigenère cipher,
 which is an ancient encryption method. Extended Vigenère cipher is able to encrypt
 upper and lower case letters, numeric characters, and punctuation marks. In addition,
 the method can use upper and lower case letters, numeric characters and punctuation
 marks as encryption key, and there is no key length limit. The cipher text generated
 with the extended Vigenère cipher is also hidden in an image to keep it safe in the
 transmission medium. Hiding is performed with LSB steganography, which is
 another data security method. Thus, both the readability and detectability of
 confidential data are reduced. The cryptological security of the proposed method is
 measured by the Avalanche effect. Steganographic safety is evaluated with SSIM
 and PSNR measurements. A user graphical interface has been developed and the
 maximum payload of the carrier image is measured before encryption. Proposed
 method applied on some test images with different specifications. 1 bit key
 modification avalanche effect results of proposed method with random plain texts
 between 1000-10000 characters with a key length of 8 and 16 characters is close to
 50%. Also, SSIM value calculated over 0.99 each time while maximum
 steganographic payload of the test images reached." @default.
- W4313194129 created "2023-01-06" @default.
- W4313194129 creator A5011670117 @default.
- W4313194129 date "2022-12-31" @default.
- W4313194129 modified "2023-10-07" @default.
- W4313194129 title "Uzamsal Alanda Bir Kripto-Stegano Hibrit Uygulama" @default.
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- W4313194129 doi "https://doi.org/10.55117/bufbd.1100693" @default.
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