The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 23, 2018
Filed:
Aug. 15, 2013
Deutsche Post Ag, Bonn, DE;
Mike Bobinski, Bonn, DE;
Jürgen Pabel, Köln, DE;
DEUTSCHE POST AG, , DE;
Abstract
A method is provided for securely transmitting a digital message that is transmitted by means of an electronic letter service. A user of the service has a computer with a functioning browser and an Internet connection, and the electronic letter service makes use of a TrustCenter. The user creates a password using his/her browser. A user password verifier is cryptographically derived from the password. The user password verifier is transmitted to the electronic letter service and stored on a storage medium. A user secret is generated from the password by means of a cryptographic derivation. The user secret constitutes the symmetrical key for the encryption of a user-specific user master secret. The user secret is encrypted using the public key of the TrustCenter and the encrypted user secret is transmitted to the electronic letter service, from where it is then forwarded to the TrustCenter.