Method and arrangement for user friendly device authentication
AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorsRolf Blom, Per-Olof Nerbrant, Mats Näslund
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Abstract
The present invention relates to fraud prevention and authentication of a device to a user. The method of authenticating a personal device according to the invention comprises a set up sequence, wherein at least a first preferred output format is selected by the user, and a device configuration verification sequence. In the device configuration verification sequence a checksum is calculated and converted to a user friendly output format based on the user selected preferred output format. In addition the checksum may be calculated based on variable, and user selectable, keying material. The personal device, after being authenticated according to the above, may be used to authenticate a second device.
Claims22
A method of authenticating at least a first device to a user, the method comprising a conversion of a checksum generated within the first device to a user friendly output format, the method comprising:
- a set up sequence, comprising:
- receiving and storing at least a first preferred output format selected from at least two user friendly output formats;
- and
- receiving and storing a specification of keying material to be included in the checksum calculation, and
- a device configuration verification sequence comprising:
- extracting the selected keying material from at least one identification module comprised in the personal device;
- calculating a checksum based on the keying material;
- determining which user friendly output format to use, said determination at least partly based on the at least a first preferred output format;
- and
- converting the checksum to the selected user friendly output format;
- wherein the user friendly output format comprises one or a combination of an image, a sound, and a text;
- and
- wherein the keying material comprises a device identifier.
A personal device provided with a plurality of man-machine communication interfaces, and adapted for communication with other devices, the personal communication device comprising:
- a plurality of identification modules adapted, when executed by a processor, to provide keying material to be included in the checksum calculation,
- a calculating module adapted, when executed by the processor, to calculate a checksum based on the keying material,
- a user preference specification module adapted, when executed by the processor, to receive and store a user selection of at least one preferred output selected from at least two user friendly output formats,
- the user preference specification module further adapted, when executed by the processor, to determine which user friendly output format to use, said determination at least partly based on the at least a first preferred output format,
- a conversion module adapted, when executed by the processor, to convert the checksum to the selected user friendly format, and
- said user preference specification module connected to the calculating module and to at least one conversion module,
- wherein the user friendly output format comprises one or a combination of an image, a sound, and a text, and
- wherein the keying material comprises a device identifier.
Dependencies are inferred from the claim text.