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 devices for dynamic resource monitoring and allocation in a cluster system
Image forming apparatus using a toner container in which the toner outlet may be positioned in a horizontal or vertical direction
Navigation features for obtaining fuel before returning a rental vehicle
Intelligent cellular communications gateway device, system, and method
Mesh-chair cloth
Delivery of alarm system event data and audio over hybrid networks
Rechargeable battery and manufacturing method thereof
  Randomly Featured Patents
Device for testing the magnetic properties of a magnetic material
Composition for treatment meat
Isolation structure for semiconductor integrated circuit substrate
Methods for producing a structured metal layer
High speed well surveying and land navigation
Device for sealing container openings by applying stretch plastic film
Fuse block with integral door sensing rotary disconnect
Router with quick depth of cut adjustment
Retrofit turbocharger booster
Optical recording film and process for production thereof