Timeline for Is it possible to create a "digital seal" to tell if a document has been opened?
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 16, 2021 at 7:42 | comment | added | Toby Speight | You should be able to use any of the standard secret-splitting techniques to distribute parts of the key across multiple (and also redundant) semi-trusted third parties. Especially if you're already using a distributed trusted party that is blockchain. | |
| Mar 15, 2021 at 10:45 | comment | added | MSalters | A further problem with this idea is that anyone can request the key, even those that do not actually have the encrypted document. Hence, this scheme fails to show whether the document was opened. | |
| Mar 15, 2021 at 10:42 | comment | added | MSalters | And it even gets the "theoretically impossible" part wrong. Neither asymmetric cryptography nor Bitcoin was considered "theoretically impossible", at least not by a majority of researchers. As for the "homomorphic encryption, zero-knowledge proofs and secret sharing" - buzzwords, when used like this. | |
| Mar 15, 2021 at 3:23 | comment | added | marshal craft | I think this answer basically says, "because bitcoin". | |
| Mar 14, 2021 at 6:28 | history | answered | Artelius | CC BY-SA 4.0 |