Smartcard with cryptographic functionality and method and system for using such cards
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
May 12, 2005
app pub date -
Nov 5, 2004
filing date -
Nov 8, 2003
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A smartcard is provided that stores a secret associated with the user of the card. The smartcard is arranged to map an input string to a first element of an algebraic group according to a known mapping function, to multiply the first element by the stored secret to form a second element of the same algebraic group such that there exists a computable bilinear map for the first and second elements, and to output this second element. This selection of the limited functionality of the smartcard enables it to be employed in the provision of a range of cryptographic services such as encryption, decryption and signature generation. The smartcard is therefore suitable for use in an organisation where multiple cryptographic services are required.
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