While data is being transmitted from device-to-device in any IoT network over un-trusted channel, there will appear the security challenges such as data integrity, authentication and non-repudiation for a secure system. Proxy multi-signature signature is a cryptographic primitives, where the signer signs on a given message on behalf of multiple signer involved in a protocol. In this paper, we propose a secure proxy multi-signature scheme ELDA by improving the scheme proposed by Cao et al. We have designed a network model for IoT and deployed the proposed scheme. The scheme preserves integrity of the data collected by sensors, non-repudiation and data authentication. We have done experimental analysis and compared with other relevant protocols. The scheme is secure forgery attack and length-extension attack. Our scheme ELDA possesses low computational cost and communication over head. Furthermore energy consumption is relatively very less as compared with the other schemes.

当数据通过不受信任的通道在任何物联网网络中从设备到设备传输时，就会出现安全挑战，例如数据完整性、身份验证和安全系统的不可否认性。代理多重签名是一种密码学原语，其中签名者代表协议中涉及的多个签名者对给定消息进行签名。在本文中，我们通过改进 Cao 等人提出的方案，提出了一种安全代理多重签名方案 ELDA。我们为物联网设计了一个网络模型并部署了所提出的方案。该方案保持了传感器收集的数据的完整性、不可否认性和数据认证。我们进行了实验分析并与其他相关协议进行了比较。该方案是安全伪造攻击和长度扩展攻击。我们的方案 ELDA 具有低计算成本和低通信开销。此外，与其他方案相比，能源消耗相对非常少。