Format preservation based masking system and method
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United States of America Patent
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Mar 26, 2019
Grant Date -
May 11, 2017
app pub date -
Feb 9, 2016
filing date -
Nov 7, 2015
priority date (Note) -
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Abstract
A computer implement format preservation based masking system and method is provided. The system obtains a first set of letters and a private key, and encrypts the first set of letters to obtain an encrypted letters list using the first set and private key. The encrypted letters list comprises a set of encrypted letters. A dynamic map is generated based on the encrypted letters, which includes one or more keys, each key being specific to a letter in the first set letters. A position of each of maskable letters in a second set of letters is calculated using the dynamic map, and performs masking of the maskable letters based on the position of each of the maskable letters to obtain masked data using the dynamic map.
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