Authentication technique based on digital fragile watermarking has gradually been one of the most important researches for its advantage in digital media authentication field.

基于数字易碎水印的认证技术因为更适合对数字图像进行认证，逐渐成为该领域的一个重要研究方向。

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In addition to his academic work, Abou El Fadl had spent the year studying for certification in a top-level field of Islamic jurisprudence called hadith authentication.

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