Method, apparatus, system and firmware for secure transactions
DC CAFC
First Claim
Patent Images
1. A microcontroller based secure transaction integrated circuit comprising:
- a microcontroller core;
a math coprocessor connected to said microcontroller core, said math coprocessor being for handling complex mathematics of encryption and decryption;
memory circuitry which can be programmed by a service provider to enable said microcontroller based secure transaction integrated circuit to perform predetermined functions on behalf of the service provider and for the benefit of an end user, said memory circuitry being connected to said microcontroller core;
an input/output circuit, connected to said microcontroller core, for exchanging information with a device external to said microcontroller based secure transaction integrated circuit; and
a real time clock, connected to said microcontroller core, for providing a time measurement for time stamping a predetermined function.
2 Assignments
Litigations
4 Petitions
Accused Products
Abstract
The present invention relates to an electronic module used for secure transactions. More specifically, the electronic module is capable of passing information back and forth between a service provider'"'"'s equipment via a secure, encrypted technique so that money and other valuable data can be securely passed electronically. The module is capable of being programmed, keeping track of real time, recording transactions for later review, and creating encryption key pairs.
393 Citations
16 Claims
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1. A microcontroller based secure transaction integrated circuit comprising:
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a microcontroller core; a math coprocessor connected to said microcontroller core, said math coprocessor being for handling complex mathematics of encryption and decryption; memory circuitry which can be programmed by a service provider to enable said microcontroller based secure transaction integrated circuit to perform predetermined functions on behalf of the service provider and for the benefit of an end user, said memory circuitry being connected to said microcontroller core; an input/output circuit, connected to said microcontroller core, for exchanging information with a device external to said microcontroller based secure transaction integrated circuit; and a real time clock, connected to said microcontroller core, for providing a time measurement for time stamping a predetermined function. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A secure transaction integrated circuit comprising:
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a microcontroller core; a memory circuit, in communication with said microcontroller core, for storing a transaction program; a modular exponentiation accelerator circuit, in communication with said microcontroller core, for performing encryption and decryption calculations; an input/output circuit, in communication with said microcontroller core, for receiving and transmitting data information with another electronic device; and a clock circuit for measuring time and providing time stamp information responsive to functions being performed by said microcontroller core. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification
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Litigation Data
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Current AssigneeMaxim Integrated Products, Inc. (Analog Devices, Inc.)
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Original AssigneeDallas Semiconductor Corporation (Analog Devices, Inc.)
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InventorsCurry, Stephen M., Loomis, Donald W., Fox, Christopher W.
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Primary Examiner(s)Gregory, Bernarr E.
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Application NumberUS09/041,190Time in Patent Office889 DaysField of Search380/4, 380/9, 380/21, 380/23, 380/24, 380/25, 380/30, 380/46, 380/49, 380/50, 235/379, 235/380, 705/64, 705/65, 705/66, 705/67, 705/68, 705/69, 705/75, 713/155, 713/156, 713/157, 713/158, 713/168, 713/172, 713/173, 713/174US Class Current705/65CPC Class CodesG06Q 20/341 Active cards, i.e. cards in...G06Q 20/367 involving electronic purses...G06Q 20/3823 combining multiple encrypti...G06Q 20/401 Transaction verificationG06Q 20/4093 Monitoring of device authen...G06Q 20/40975 using encryption thereforG07F 7/0826 Embedded security moduleG07F 7/1008 Active credit-cards provide...G07F 7/1016 Devices or methods for secu...H04L 2209/34 Encoding or coding, e.g. Hu...H04L 2209/56 Financial cryptography, e.g...H04L 9/3263 involving certificates, e.g...H04L 9/3297 involving time stamps, e.g....
