A computational efficient masking friendly post-quantum signature scheme secure to side-channel-attack

加密签名方案是安全和自动分发软件产品/更新不可或缺的一部分--提供来源验证和数据完整性证明。然而，现有的方案基于容易受到量子计算机攻击的数学模型。随着量子计算机现在成为一种商业现实，对量子安全签名的**迫切需要**。虽然第一代后量子(PQ)密码学标准正在出现，但这些标准没有考虑更广泛的安全威胁，容易受到旁路攻击(SCA)--即通过监控执行参数来推断私人数据。虽然掩蔽对策可以追溯应用，但这些都是计算密集型的，导致掩蔽顺序的开销呈指数级增加。**raccoon使用创新型的子例程构建块设计，既不需要掩蔽，也可以在准线性时间内掩蔽。**raccoon是*世界上第一个PQ签名方案，提供了计算效率提高10倍的抗SCA**。raccoon**消除了在效率和安全性**之间妥协的需要，并且适用于资源受限的平台，如移动/物联网设备。

Cryptographic signature schemes are integral to secure and automated distribution of software products/updates -- providing source authentication and proof-of-data integrity. However, existing schemes are based on mathematics vulnerable to quantum computer attack. With quantum computers now becoming a commercial reality, there is an **urgent need for quantum-secure signatures**.Whilst a first-generation of post-quantum (PQ) cryptography standards are emerging, these do not consider broader security threats and are vulnerable to side-channel-attack (SCA) -- whereby private data is inferred by monitoring executional parameters. Although masking countermeasures can be retrospectively applied, these are computationally intensive, resulting in an exponential increase in overhead with masking order.Designed using innovative subroutine building blocks that either don't require masking, or can be masked in quasi-linear time, **Raccoon is** **a world's first PQ signature scheme delivering a computationally efficient 10-fold increase in resistance to SCA**.Raccoon **eliminates the need to compromise between efficiency and security**, and is viable for resource constrained platforms, such as mobile/IoT devices.