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中文摘要：
Signcryption 比 sign-then-encrypt 来临是更高效地在单个逻辑步执行加密和签名的密码的原语。到现在为止， signcryption 计划的各种各样的类型被建议了。在他们之中， signcrypter 的隐私保护的要求在一些实际应用是必要的。在这篇论文，从双线性的白族的一个新基于身份的匿名的 signcryption 计划响，它是基于身份的戒指签名和加密计划的器官的联合，被建议。建议计划对在在随机的神谕模型的 Decisional 双线性的 Diffie-Hellman 假设下面的选择密文攻击是难区分的。它的 unforgeability 依靠计算 Diffie-Hellman 问题。与以前的计划相比，新计划在计算是更有效的。
英文摘要：
Signcryption is a cryptographic primitive that performs encryption and signature in a single logical step more efficiently than sign-then-encrypt approach. Till now, various kinds of signcryption schemes have been proposed. Among them, the requirement of signcrypter＇s privacy protection is needful in some practical applications. In this paper, a new identity-based anonymous signcryption scheme from hilinear pairings, which is the organic combination of identity-based ring signature and encryption scheme, is proposed. The proposed scheme is indistinguishable against the chosen ciphertext attack under the Decisional Bilinear Diffie-Hellman assumption in the random oracle model. Its unforgeability relies on the computational Diffieellman problem. Compared with the previous schemes, the new scheme is more efficient in computation.
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