METHOD AND APPARATUS FOR TOKENIZATION OF SENSITIVE SETS OF CHARACTERS
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United States of America Patent
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app pub date -
Oct 1, 2013
filing date -
Mar 26, 2008
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Abstract
A method and system for secure handling of sensitive sets of characters in a distributed hierarchical system are disclosed, comprising at least one local server on a lower hierarchic level and at least one central server at a higher hierarchic level. The method comprises the steps: receiving a sensitive set of characters in said local server; replacing a part of said sensitive set of characters with a token to form a tokenized set of characters, said token belonging to a subset of possible tokens assigned to the local server by the central server; transferring at least one of said sensitive set of characters and said tokenized set of characters to the central server; and canceling said sensitive set of characters from said local server within a limited time from said transferring, while maintaining said tokenized set of characters in a local database connected to said local server.
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