System and method for providing private demand-driven pricing
First Claim
1. A system for private variable cost digital goods pricing, comprising:
- a database to store an encrypted price that has been experimentally perturbed for non-identically-priced digital goods, wherein a desired marginal pricing level has not been realized for at least one of the digital goods;
a purchaser system to provide a purchasing decision about a particular digital good in response to the perturbed encrypted price without revealing the particular digital good; and
a seller system to privately update the original encrypted price of the particular digital good as a reflection of the desired marginal pricing level.
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Abstract
A system and method for providing private demand-driven pricing for fixed cost digital goods are described. Symmetric private information retrieval is engaged on a table that includes public key encryptions of prices for digital goods stored in a database by a seller system, wherein a desired marginal pricing level has not been realized. The price of one digital good is decrypted with a private key for pricing by a purchaser system. A purchasing decision based upon the decrypted price is sent to the seller system without revealing the particular digital good being purchased. A conditionally disclosed symmetric key for goods is received under which the digital goods in the database have been encrypted. Symmetric private information retrieval is engaged on the database and the digital good purchased with the symmetric key is decrypted. The encrypted prices of the digital goods are privately updated based upon the desired marginal pricing level.
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Citations
14 Claims
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1. A system for private variable cost digital goods pricing, comprising:
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a database to store an encrypted price that has been experimentally perturbed for non-identically-priced digital goods, wherein a desired marginal pricing level has not been realized for at least one of the digital goods; a purchaser system to provide a purchasing decision about a particular digital good in response to the perturbed encrypted price without revealing the particular digital good; and a seller system to privately update the original encrypted price of the particular digital good as a reflection of the desired marginal pricing level. - View Dependent Claims (2, 3)
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4. A method for private variable cost digital goods pricing, comprising:
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perturbing an encrypted price experimentally for non-identically-priced digital goods, wherein a desired marginal pricing level has not been realized for at least one of the digital goods; providing a purchasing decision about a particular digital good in response to the perturbed encrypted price without revealing the particular digital good; and privately updating the original encrypted price of the particular digital good as a reflection of the desired marginal pricing level. - View Dependent Claims (5, 6, 7)
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8. A system for providing private demand-driven pricing for variable cost digital goods that are uniquely priced, comprising:
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a database to store a table comprising public key encryptions of prices for digital goods stored in a database by a seller system, wherein a desired marginal pricing level has not been realized for at least one of the digital goods; a purchaser system, comprising; a pricing module, comprising; a price retrieval submodule to engage in symmetric private information retrieval on the table; and a price decryption submodule to decrypt the price of one of the digital goods with a private key for pricing by a purchaser system; a purchasing module, comprising; a decision submodule to send a purchasing decision about one of the digital goods based upon the decrypted price from the purchaser system to the seller system without revealing the particular digital good being purchased, and to receive a conditionally disclosed symmetric key for goods in return under which the digital goods in the database have been encrypted; and a goods retrieval submodule to engage in symmetric private information retrieval on the database and to decrypt the digital good purchased with the symmetric key for goods; and a seller system to privately update the encrypted prices of the digital goods based upon the desired marginal pricing level. - View Dependent Claims (9, 10)
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11. A method for providing private demand-driven pricing for variable cost digital goods that are uniquely priced, comprising:
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engaging in symmetric private information retrieval on a table comprising public key encryptions of prices for digital goods stored in a database by a seller system, wherein a desired marginal pricing level has not been realized for at least one of the digital goods; decrypting the price of one of the digital goods with a private key for pricing by a purchaser system; sending a purchasing decision about one of the digital goods based upon the decrypted price from the purchaser system to the seller system without revealing the particular digital good being purchased; receiving a conditionally disclosed symmetric key for goods in return under which the digital goods in the database have been encrypted; engaging in symmetric private information retrieval on the database and decrypting the digital good purchased with the symmetric key for goods; and privately updating the encrypted prices of the digital goods based upon the desired marginal pricing level. - View Dependent Claims (12, 13, 14)
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Specification