For traditional digital signature, the signature information has only one signature member, any the verification member can use the public key to verify the validity of the signature.

在传统的数字签名中，对信息的签名只需要一个签名者，任何验证者使用签名公钥就可验证签名的有效性。

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Construct an efficient and secure solution scheme of member deletion problem in group signature.

构造了群签名中高效安全的群成员删除问题的解决方案。

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In this paper, an improvement of ACJT group signature scheme and its member revocation is made by improving the efficiency remarkably while not reducing the security.

文章对ACJT群签名及其成员撤消方案进行了一些改进，提出了一个新的方案，在保证不影响其安全性的前提下使其效率得到显著提高。

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Mr Paisley had secured the necessary 30 signatures to table his motion on Monday when he secured the signature of a member of David Trimble's assembly party, Pauline Armitage.

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Commitment to this study requires my signature along with the signature of a family member who may not fully understand the reasoning behind the decision.

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