Potential capacity of processors is enhancing rapidly which leads to the increase of computational ability of the adversary. As a result, the required key size for conventional encryption techniques is growing everyday for complex unbreakable security communication systems. The Public Key Cryptography (PKC) techniques which use larger keys cannot be fitted in tiny resource constrained Wireless of Things (WoT) devices. Some Symmetric Key Cryptosystems (SKC) use smaller keys, which can be fitted in the tiny devices. But in large networks where the number of nodes is in the order of 103, the memory constraint does not allow the system to do so. The existing secure data communication in insecure medium uses various conventional encryption methods like Public Key Cryptography (PKC) and Symmetric Key Cryptosystems (SKC). Generally, modern encryption methods need huge processing power, memory and time. Also in some cases, Key Pre-distribution System (KPS) is used among different communicating devices. With the growing need for larger key size in the conventional secure communication system, the existing resources in the communicating devices suffer from resource starvation. Hence, the need of a novel mechanism for secure communication is inevitable. But the existing secure communication mechanisms like PKC, SKC or KPS do not ensure elimination of resource starvation issue in tiny devices during communication. In these existing conventional mechanisms, the plain text is generally converted into cipher text with greater size than the plain text at the device level, which leads to resource starvation. At the time of transmission, the cipher text at the device end requires more bandwidth than the plain text which puts bandwidth overhead on the broadcast channel (BC).

翻译：处理器性能的快速提升导致敌手计算能力不断增强，这使得传统加密技术为保证通信系统安全性所需的密钥长度与日俱增。采用更长密钥的公钥密码(PKC)技术难以适配资源受限的微型物联网(WoT)设备。部分对称密钥密码系统(SKC)虽可采用较短密钥适配微型设备，但当网络节点规模达到10³量级时，内存限制严重制约了该方案的可行性。现有非可信介质中的安全数据通信主要依赖公钥密码(PKC)与对称密钥密码系统(SKC)等传统加密方法。然而，现代加密技术普遍需要巨大的处理能力、存储空间与时间开销。部分场景下，通信设备间还需部署密钥预分配系统(KPS)。随着传统安全通信系统对密钥长度的需求持续增长，现有通信设备资源陷入严重匮乏困境。因此，亟需构建新型安全通信机制。但PKC、SKC或KPS等现有机制均无法彻底消除微型设备通信过程中的资源匮乏问题——这些传统方案在设备端将明文转换为密文时，密文体积通常大于明文，直接导致资源短缺。传输过程中，设备端产生的密文相较于明文需要占用更大带宽，给广播信道(BC)带来额外带宽开销。