ID	原文	译文
5264	针对目前基于身份的代理重签名方案不支持用户撤销的问题，引入了可撤销的基于身份代理重签名密码体制，并给出了相应的形式化定义和安全模型。	To solve the problem that the existing identity-based proxy re-signature schemes cannot provide revocation functionality, the no-tion of revocable identity-based proxy re-signature was introduced. Furthermore, the formal definition and security modelof revocable identity-based proxy re-signature were presented.
5265	基于代理重签名方案和二叉树结构，构造了一个可撤销的基于身份的代理重签名方案。	Based on proxy re-signature scheme and binary treestructure, a revocable identity-based proxy re-signature scheme was proposed.
5266	在所构造的方案中，用户的签名密钥由秘密密钥和更新密钥两部分组成。	In the proposed, scheme, the user's signing key consists of two parts, a secret key and an update key.
5267	通过安全信道传输的秘密密钥是固定的，但利用公开信道广播的更新密钥是周期性变化的。	The secret key transmitted over the secure channel is fixed, butthe update key broadcasted by the public channel is periodically changed.
5268	只有未被撤销的用户才能获得更新密钥，并使秘密密钥随机化，更新密钥生成当前时间段的签名密钥。	Only the user who has not been revoked canobtain the update key, and then randomize the secret key and update the key to generate the corresponding signature keyof the current time period.
5269	在标准模型下证明了所构造的方案在适应性选择身份和消息攻击下是存在不可伪造的，并满足双向性、多用性和抗签名密钥泄露攻击性。	In the standard model, the proposed scheme is proved to be existentially unforgeable againstadaptive chosen-identity and chosen-message attacks. In addition, the proposed scheme has properties of bidirectionalityand multi-use, and can resist signing key exposure attacks.
5270	分析结果表明，所构造的方案高效地实现了用户的撤销与密钥的更新，具有良好的延展性。	The analysis results show that the proposed scheme can effi-ciently revoke the user and update the user's key, and thus it has good scalability.
5271	在煤矿事故后的灾区侦察和应急救援中，应急通信系统是保障人员沟通联络、确定受困人员位置、感知灾区现场态势的必备设施。	For the disaster area probing and emergency rescue in a mine, it is of great importance to employ the emergencycommunication system to communicate with each other, determine the places of trapped miners, and sense current status ofdisaster area.
5272	提炼了煤矿应急通信系统的总体架构模型，即一个骨干、多个分支、若干专线，辅以无线通信网络的结构模式。	The hybrid emergency communication architecture model for coal mines was extracted, which was composedof one backbone, multiple branches, several special lines, and some wireless networks as assistance.
5273	综述了主要的煤矿有线应急通信系统、无线应急通信系统、透地应急通信系统和混合应急通信系统的发展现状，分析了各种系统的关键技术和在应急救援场景中面临的挑战。	Four types of emergen-cy communication systems of coal mine were reviewed, namely through-the-air, through-the-wire, through-the-earth andmixed medium type. The key technologies and challenges of these four emergency communication types were analyzed.