Encryption of Walsh Hadamard Transform applied images with the AES encryption algorithm

Abstract

Özetçe-Gelişen teknoloji bilgi güvenliğini ve gizliliğini tehdit etmektedir. Günümüzde verilerin gizli ve güvenli bir ortamda aktarımının yapılması için, şifreleme metotlarının veya kriptografik sistemlerinin kullanılması kaçınılmazdır. Bu çalışmada resim dosyaları üzerinde nitelik belirleme, metin analizi, filtreleme, sıkıştırma gibi resim işleme teknikleri için kullanılan dönüşümlerden biri olan WHT (Walsh-HadamardTransform) kullanılmıştır. Dönüşüm sonunda elde edilen resmin piksel değerleri simetrik şifreleme algoritmalarından biri olan AES (Advanced EncryptionStandard) şifreleme algoritması ile şifrelenmiştir. Şifrelenen piksel değerleri kullanılarak şifreli txt dosyası elde edilmiştir. Anahtar Kelimeler -Walsh-Hadamard Dönüşümü; Görüntü Şifreleme; AES; Şifreleme; Deşifreleme; Görüntü İşleme; Kriptografi.Abstract-Developing technology threaten to the information security and privacy. Today, for data transfer in a private and secure environment, the use of encryption methods or cryptographic systems are inevitable. In this study WHT (Walsh-Hadamard Transform) that is used, one of the transforms that used image processing techniques such as attribute extraction on image files, text analysis, filtering, compression. Image pixel values obtained at the end of transformation encrypt with AES (Advanced Encryption Standard) encryption algorithm. Using encryption pixel values encrypted txt file was obtained.

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