Data copyright management
First Claim
Patent Images
1. A method, comprising:
- receiving, at a computer system, encrypted digital cash that is redeemable for a first amount of cash;
decrypting the encrypted digital cash, wherein the decrypting is performed using the computer system and a first crypt key;
adjusting the decrypted digital cash to produce digital cash redeemable for a second amount of cash, wherein the adjusting is performed using the computer system in response to a request for a quantity of money;
generating, using the computer system, a second crypt key that is different from the first crypt key;
encrypting the digital cash redeemable for the second amount, wherein the encrypting is performed using the computer system and the second crypt key;
storing a residual amount of digital cash from the adjusting; and
transmitting the encrypted digital cash redeemable for the second amount to an entity that issued the request for the quantity of money, wherein the transmitting includes transmitting the second crypt key to the entity via a bank of the entity.
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Abstract
Embodiments of methods, apparatuses, devices, and/or systems for data copyright management are described. According to one embodiment of this disclosure, data copyright management may include displaying, storing, copying, editing, and/or transferring digital data. According to an embodiment, data copyright management may include protecting digital data copyrights. Various embodiments of this disclosure may use cryptographic keys to implement portions of the data copyright management disclosed.
287 Citations
27 Claims
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1. A method, comprising:
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receiving, at a computer system, encrypted digital cash that is redeemable for a first amount of cash; decrypting the encrypted digital cash, wherein the decrypting is performed using the computer system and a first crypt key; adjusting the decrypted digital cash to produce digital cash redeemable for a second amount of cash, wherein the adjusting is performed using the computer system in response to a request for a quantity of money; generating, using the computer system, a second crypt key that is different from the first crypt key; encrypting the digital cash redeemable for the second amount, wherein the encrypting is performed using the computer system and the second crypt key; storing a residual amount of digital cash from the adjusting; and transmitting the encrypted digital cash redeemable for the second amount to an entity that issued the request for the quantity of money, wherein the transmitting includes transmitting the second crypt key to the entity via a bank of the entity. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method, comprising:
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receiving a first instance of digital cash data at a computer system; decrypting the first instance of digital cash data to determine a first amount of digital cash; creating a second instance of digital cash by adjusting the first amount of digital cash by a second amount of digital cash; transmitting the second instance of digital cash to a merchant; and transmitting a key to the merchant via a bank, wherein the key is usable to decrypt the second instance of digital cash. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A non-transitory computer-readable medium having stored thereon instructions that, in response to execution by a computing device, cause the computing device to perform operations comprising:
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receiving digital cash redeemable for a first amount of cash; decrypting the received digital cash to determine the first amount; adjusting the digital cash such that the digital cash is redeemable for a second amount of cash; transmitting the adjusted digital cash directly to a recipient; and transmitting a decryption key indirectly to the recipient, wherein the decryption key is usable to decrypt the transmitted digital cash. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A system, comprising:
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one or more processors; and memory, coupled to the one or more processors, storing program instructions executable by the system to cause the system to implement a digital cash management program to perform operations comprising; receiving encrypted digital cash redeemable for an amount of money; decrypting the digital cash to determine the amount; dividing digital cash into a first portion and a second portion, wherein the first portion is redeemable for a first amount of money, and wherein the second portion is redeemable for a second amount of money; transmitting the second portion to a recipient; and storing the first portion in an integrated circuit card. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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Specification