首次提出数字签名分类问题,针对唯签名的数字签名模型的分类引入了一套分类标准.据此,可以把数字签名模型分成5个基类,69个子类.把不同的子类进行适当组合,理论上可以得到21141种数字签名模型.这一结果几乎包含了现有的各种数字签名模型,将有助于探索新签名模型. This paper proposes the classification problem of digital signatures for the first time and introduces a set of classification criteria for the classification of signature signatures.Accordingly, the digital signature model can be divided into five base classes and 69 subclasses.After the different subclasses are properly combined, In theory, 21,141 digital signature models can be obtained, which contains almost all the existing digital signature models and will be helpful in exploring new signature models.