Resources Contact Us Home
Token based new digital cash protocols with combined blind digital signature and pseudonym authentication

Image Number 14 for United States Patent #7877331.

Digital cash token protocols use a combination of blind digital signatures and pseudonym authentication with at least two pairs of public and private keys. A user is provided with one master pair of private and public keys and as many pseudonym pairs of private and public keys as desired. The resulting digital cash token based hybrid protocols combine the advantages of blind digital signature and pseudonym authentication. Blind digital signatures based on the master pair of keys are used to withdraw digital cash from the user's bank account under the user's real identity. A pseudonym pair of keys is used for converting digital cash into digital cash tokens by a digital cash issuer. All pseudonyms can be used for spending the digital cash tokens. These protocols ensure anonymity when withdrawing digital cash from the user's account under the user's real identity in addition to providing pseudonym authentication when spending digital cash tokens under a pseudonym.

  Recently Added Patents
Systems, methods, and apparatus to determine physical location and routing within a field of low power beacons
Modulators of cystic fibrosis transmembrane conductance regulator
Integrated analyses of breast and colorectal cancers
Elementary network description for efficient link between neuronal models and neuromorphic systems
Organic light-emitting display and method of manufacturing the same
Glycosyltransferase promoter
  Randomly Featured Patents
Preparation of N,N'-dialkylphenylenediamines
Spreader bar assembly
Gas feed device comprising tubes with narrowed zones
Automated system and method for delivery of messages and processing of message responses
Sun protective garment
Dual-axis, single mirror interferometer measuring system
Inverse pulse control for eddy current abatement
Printer including improved print head control
Fuel pump regulator
Diphosphonic acid derivatives, processes for the preparation thereof and pharmaceutical compositions containing them