Multiple electronic signatures on multiple documents

European, international and Internet standards are available to support electronic signatures. The most common signature formats are defined via the ASN.1 syntax with DER encoding, or the XML language. Furthermore PDF is a widespread document format with support for e-signatures. Application of signatures to e-documents must consider several aspects: long term signature validity, non-repudiation, qualified certificates, and many others. This paper focuses on the relationships among multiple documents and multiple signatures and analyses the support provided by current formats to this problem. Where lack of standardization or standard profiling is found, a proposal is made towards better application of e-signatures.

• Type: Conference
• Year: 2004
• Where: EGCDMAS
• Authors: Antonio Lioy, Gianluca Ramunno
• Keywords: Common Signature Formats, ECommerce, EGCDMAS 2004, Signatures, Term Signature Validity