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Highly Secure Image Steganography Algorithm using Curvelet Transform and DCT Encryption
Abstract—Highly Secure Image Steganography Algorithm using Curvelet Transform and DCT Encryption. A highly secure data hiding system (a.k.a. Steganography) in a cover image using the low Frequency Curvelet domain. The contribution of the suggested technique is its high security, because it is using four secret keys < Final Year Projects 2016 > (encryption key, two shuffling keys, data hiding key) and using only the low frequency component of Curvelet domain. The use of low frequency component of Curvelet transform in steganography provides a number of advantages compared to other techniques such as: 1) Computation time reduction and, 2) Curvelet transform are designed to handle curves discontinuities using only a small number of coefficients, so hiding in the low frequency components will not affect edges coefficients, which produces better stego object quality.
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