How to apply tamper evident signatures to SMART Doc.

Digital signatures represent a special type of electronic signature that merit a special discussion, due to their complexity. Digital signatures, depending on their implementation, may provide one or more of the following qualities: attribution or signer authentication, message or document integrity (tamper evidence) and non-repudiability (meaning a signer cannot later deny having signed the document). However, parties who rely on digital signatures may choose to only rely on one or more of the previously mentioned qualities. All SMART Documents MUST include at least one digital signature. The minimum required digital signature MUST be used as a tamper-evident wrap after all other signatures have been affixed. The tamperseal MUST be created and applied immediately following the other electronic signatures in the document. The tamperseal MUST be applied at the earliest possible time, before any post-processing is performed on the document by an application or system. (Note: The exact requirements of this timeframe will be determined by agreements between business partners or by investor delivery requirements).

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