Cloud-based signature solutions: a survey
Cloud-based signing solutions are on the rise and attempt to revolutionize business processes while integrating themselves well into cloud storage infrastructures. The combination promises faster process flows for signing a contract than the classic paper-based approach. In this survey we reviewed seven representative examples of cloud-based signature services and assessed them at the provided cryptographic features, the interfaces they offer, the authentication methods they provide and the key storage implementations used. We found that multi-factor authentication and hardware security module back-ends are common features. Interfaces range from APIs over web user interfaces to proprietary applications. Yet, there are shortcomings in flexibility and security.
The survey can be downloaded from the following link:
Cloud-based signature solutions – a survey (EN, PDF)