Patent ID: 11916916
Assignee: WYMSICAL, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 2:
3. A computer-implemented method, comprising:
associating an unsigned, encrypted document with an authenticated user code of a signing user;
sending the unsigned, encrypted document to the signing user;
decrypting the unsigned, encrypted document with a client decryption key corresponding to the signing user after the signing user has accepted the unsigned, encrypted document;
generating an electronic signature from the authenticated user code for the signing user;
appending the electronic signature to the decrypted, unsigned document to produce a decrypted, signed document, wherein the signature may be represented by visible images, visible codes, or embedded metadata;
retrieving a client encryption key from their personal, individual electronic vault containing the signing user's encryption key and metadata, encrypting the decrypted, signed document with the client encryption key; and
transferring the encrypted, signed document to an electronic document vault associated with the signing user;
wherein the electronic document vault is itself encrypted and configured to provide safe, encrypted storage at an electronic storage location hosted by a document service, and control of verification or viewing the encrypted, signed document in the electronic document vault requires authorization from the signing user and the use of their client decryption key (a) to access the document, and (b) to display the document to a requesting third party, thereby allowing the requesting third party to view the electronic signature and use the electronic signature to verify the legitimacy of the document.