METHOD AND READER USED TO PRODUCE DIGITAL SIGNATURES

摘要

The invention relates to a method for producing digital signatures for data stored on a data processing device (COM). A reader (LEG) can be connected to the data processing device via an interface (SCH), and serves to read out a signature key from a storage medium to produce a digital signature. The data to be signed are transmitted from the device (COM) via the interface (SCH) to the reader (LEG), where a check sum regarding the transmitted data is produced. The correspondence between the data transmitted to the reader and the data to be signed is verified using specific features of the data. When the data do correspond, a digital signature is produced in the reader using the check sum and the signature key stored on the storage medium. Said signature is transmitted to the data processing device (COM) via the interface (SCH) and the data to be signed are provided with the signature in the data processing device. The invention further relates to a reader (LEG) for use in the method according to the invention.