… Hash functions useful in many operating systems to encrypt … Another way we define it as
square of pixels difference values … security purpose we can also add the video steganography …

… in many existing steganography methods reported recently. … to the hash function of Wong’s
previous method [68]. These … the level of security, we will permute the MSOC code by using a …

… center pixel is shown for clarity; the east and south pixels are … presentations watermarked
with different security keys, each … Linguistic steganography methods that generate the cover …

… [30-31] presented text-based steganographic methods which use … [73] use hash functions
to compute digests of web page … To improve the security protection effect further, we propose …

… A steganographic method is proposed in this study, which … color a pixel has as (5, square5)
if and only if the index of the pixel is 5… To improve the security is a future work of this research. …

… The 8×8 pixels of each block were transformed using discrete … data were computed using
the MD5 hash function [42]. Last, … Section 2.4 discusses parameters setting and security. Last, …

… messages on the Internet securely, a covert communication by … of the result after applying
a steganographic technique on a … is to use each macroblock to embed a watermark pixel. The …

… circle image similar to cover image pixel was set to conceal the secret … The added random
rotation angles also provide the security … Coverless image steganography using histograms of …

… , classifications, key technologies, achievable functions, and application scenarios.
Furthermore, multipurpose image watermarking methods developed in the past decade are …

… 杂凑函数(hash function) 是实现数据完整性, 数字签字的主要手段. … (secure hash algorithm,
SHA), 用于数字签 字标准算法(digital signature standard, DSS), 亦可用于其他需要用Hash 算法的…