Patent ID: 7409062
Filing Date: 2008-08-05
Classification: G07B

Abstract:
1. A method for the generation of forgery-proof documents or data records, whereby key information is generated and whereby encrypted checking information is formed from the key information and from a transaction indicator, comprising; generating key information in a contact station; forming encrypted checking information from the key information and from the transaction indicator in the contact station, encrypting the key information in the contact station, transmitting the encrypted checking information and the encrypted key information to an intermediate station, storing the encrypted key information and the encrypted checking information in the intermediate station and subsequently transmitting the encrypted key information and the encrypted checking information to a cryptographic module at a different time from the transfer between the contact station and the intermediate station, decrypting the encrypted key information with a key contained in the cryptographic module, irreversibly linking document data to the key information, combining the document data and the key information that is irreversibly linked to the document data to form at least one of a document and a data record, and transmitting the document or data record to a checking station.