论文标题
AMOUN：无线集体通信的不对称轻质加密方案
AMOUN: Asymmetric lightweight cryptographic scheme for wireless group communication
论文作者
论文摘要
多方组中，多派遣者在一个发件人和多个收件人之间提供了安全的通信。提供安全的多方通信非常具有挑战性，尤其是在动态网络中。现有的多重新加密方案构成了多种局限性。其中包括用于加密和解密的高计算开销，额外的通信开销以及由于会员的变化而引起的高设置成本以及受体之间的勾结。为了克服这些局限性，本文介绍了一种新型的不对称多重源加密方案Amoun。在提议的方案中，为了更好地利用网络资源，发件人将包含不同消息的密文传输到多个收件人，每个收件人只允许每个收件人检索其自己指定的消息。安全分析表明，在自适应选择的明文攻击下，所提出的方案是无法区分的。定量分析表明，对于加密和解密，轻量级AMOUN的平均计算成本比RSA和Multi-RSA都较低，即使关键尺寸大四倍。对于给定的质量大小，在加密的情况下，AMOUN的平均计算成本分别比RSA和Multi-RSA低98％和99％。对于解密，与RSA和Multi-RSA相比，AMOUN的性能提高了99％。
Multi-recipient cryptographic schemes provide secure communication, between one sender and multiple recipients, in a multi-party group. Providing secure multi-party communication is very challenging, especially in dynamic networks. Existing multi-recipient cryptographic schemes pose a variety of limitations. These include high computational overhead for both encryption and decryption, additional communication overhead and high setup cost due to change in membership, and collusion among recipients. In order to overcome these limitations, this paper introduces a novel asymmetric multi-recipient cryptographic scheme, AMOUN. In the proposed scheme, to better utilize network resources, the sender transmits a ciphertext containing different messages to multiple recipients, where each recipient only allowed to retrieve its own designated message. Security analysis demonstrates that the proposed scheme is indistinguishable under adaptive chosen plaintext attack. Quantitative analysis reveals that lightweight AMOUN shows lower average computational cost than both RSA and Multi-RSA, for both encryption and decryption, even when the key sizes are four times larger. For a given prime size, in case of encryption, AMOUN shows 98% and 99% lower average computational cost than RSA and Multi-RSA, respectively. For decryption, AMOUN shows a performance improvement of 99% compared to RSA and Multi-RSA.
