Stormshield Data Sign characteristics

Stormshield Data Sign allows multiple levels of signatures on the same document. You can therefore:

• Co-sign a document by adding your own signature to a document already signed, independently from other signatures (already present)
  

  For example, a contract between two parties requires both party signatures. Stormshield Data Sign allows each party to sign the contract independently from each other and in any order.
  

• Counter-sign a signed document by adding your own signature on someone else’s signature.
  

  For example, the payment of an invoice must be first be signed by the person who places the order to validate the invoice, then counter-signed by the accountant. Payment requires both signatures; the accountant waits for the validation of the person who places the order, and counter-signs the validation.
  

• Over-sign by signing the envelope containing an already signed file.
  

  For example, a carrier guarantees the integrity of the document which must be delivered by placing the signed document in an envelope and signing this envelope. No co-signature or counter-signature can then be added or removed from the transported document. The over-signer does not know the content of the envelop.

Stormshield Data Sign allows you to save the signed files using two different file extensions: .p7f and .p7m.

.p7m signed files can be sent to and validated by recipients who do not use Stormshield Data Sign, but who run another RFC 2630-compliant app that specifies the rules of the digital signature format.