DETECT DUPLICATES WITH EXACT AND FUZZY MATCHING ON ENCRYPTED MATCH INDEXES

Disclosed herein are system, method, and computer program product embodiments for detecting duplicates with exact and fuzzy matching on encrypted match indexes using an encryption key in a cloud computing platform. An embodiment operates by determining a match rule index value upon reception of a new record. The embodiment encrypts the match index rule value using the customer's encryption key anda deterministic encryption method and stores the encrypted match rule index value. Duplicate detection may be later performed by using the same deterministic encryption method to determine a cypher text for a candidate entry and comparing the ciphertext to the stored encrypted match indexes. 本文公开了系统、方法和计算机程序产品实施方案，其用于在云计算平台中使用加密密钥利用对加密匹配索引的精确和模糊匹配而检测重复。实施方案通过在接收到新记录时确定匹配规则索引值而进行操作。实施方案使用客户的加密密钥和确定性加密方法对匹配索引规则值进行加密，并且存储加密的匹配规则索引值。稍后可以通过如下来执行重复检测：使用相同的确定性加密方法确定候选条目的密文，并且将该密文与存储的加密匹配索引进行比较。