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Control System Data Authentication and Verification Using Elliptic Curve Digital Signature Algorithm

机译：椭圆曲线数字签名算法的控制系统数据认证与验证

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Grid and the Navy's Next Generation Integrated Power System, along with attacks on control systems such as Stuxnet, have highlighted the need for improved communications. Control system components such as PLCs and HMIs can no longer rely on simple heartbeat logic algorithms in order to verify communications. We can no longer rely on parity and checksum algorithms to determine that messages are coming through intact and unmodified. Advanced cryptographic algorithms for data authentication and verification are needed in messaging protocols between Programmable Logic Controllers (PLCs), Human-Machine Interfaces (HMIs), and sensors. Cryptographic algorithms such as RSA or the Digital Signature Algorithm (DSA) appear to provide a solution to this need on the surface except that the bit sizes required for implementing these solutions is not feasible for implementation in control system equipment. Elliptic Curve DSA (ECDSA) looks to be a promising solution due to the smaller key sizes which allow for smaller storage requirements and faster signature generations. The implementation of ECDSA can be complicated, but techniques such as using specialized prime field and binary curves as well as variations on ECDSA such as EC-KDSA can greatly increase the efficiency of the algorithm for use in control systems.
机译：电网和海军的下一代综合动力系统，以及对诸如Stuxnet之类的控制系统的攻击，突显了对改进通信的需求。控制系统组件（例如PLC和HMI）不再可以依赖简单的心跳逻辑算法来验证通信。我们不再能够依靠奇偶校验和校验和算法来确定消息是通过完整的且未经修改的。可编程逻辑控制器（PLC），人机界面（HMI）和传感器之间的消息传递协议中需要用于数据认证和验证的高级密码算法。诸如RSA之类的密码算法或数字签名算法（DSA）似乎为表面上的这种需求提供了一种解决方案，除了实现这些解决方案所需的比特大小对于在控制系统设备中实现是不可行的。椭圆曲线DSA（ECDSA）似乎是一种有前途的解决方案，这是因为较小的密钥大小允许较小的存储需求和更快的签名生成。 ECDSA的实现可能很复杂，但是诸如使用专用质数场和二进制曲线以及ECDSA的变体（例如EC-KDSA）之类的技术可以大大提高用于控制系统的算法的效率。

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