Encrypting secrets in a file for an electronic micro-commerce system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Jul 23, 2002
Grant Date -
N/A
app pub date -
Mar 19, 1999
filing date -
Mar 19, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electronic commerce system and method includes a broker computer system having a database of scrips, a vendor computer, and a consumer computer system having a wallet protected by a pass phrase. To strengthen the pass phrase, the wallet adds a nonce and a random phrase having a length determined by the processing speed of the computer system. The internal phrase is hashed with another nonce to form a checksum, which is stored in the wallet. A portion of each scrip is encrypted by hashing a unique nonce and the internal pass phrase. XORing the scrip with the hash, and storing the encrypted portion and nonce in the wallet. The wallet adds another nonce and random string to form an internal pass phrase. To use the scrip, the user provides the pass phrase, The wallet verifies that the phrase is correct, and if so, decrypts the scrip.
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