Based on the theory of digital signature and the one of ECC, first, ECC was applied in electronic government security.

基于数字签名与ECC的理论，将ECC应用于电子政务安全之中。

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Simultaneously, using the knowledge of number theory, it can guarantee the anonymity of the authorized group signature.

同时，利用数论中的有关知识，可以保证授权群签名的“匿名”性．。

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At last we propose a half frangible watermark algorithm based on the theory of digital signature, which can authenticate the integrity of image.

最后本文还借用数字签名思想提出了一种基于半易损水印的实用的数字图像认证算法。

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At one point officers had considered the woman may have been a prisoner who escaped from Askham Grange open prison, but thumb prints and a signature sent from the Republic of Ireland discounted this theory.

BBC: Malton Cemetery exhumation date set