Hi Martin,
In Saudi Arabia, Tax department decided to implement e-invoicing.
They has been shared drafts.
Please look below some piece from the draft.
"Cryptographic Stamp: The Cryptographic Stamp is a technical digital signature, and in the context of
E Invoicing Implementing Resolution it will be the technical digital signature of the hash of the
document. A digital signature is a mathematical scheme for verifying the authenticity of documents.
In the context of E Invoicing Implementing Resolution, a valid digital signature, where the
prerequisites are satisfied, is evidence for the recipient to believe that the invoice was created by the
specified sender, and that the content is has not been altered. Cryptographic Stamps in the context
of E Invoicing Implementing Resolution are defined according to the ECDSA standard. Applying the
Cryptographic Stamp is referred to as “stamping”."
