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专利名称：TOKEN-BASED SYSTEM FOR SECURING AND
RECOVERING DATA
发明人：Roy D'Souza,Jonathan K. Barnett,Roisin F.
Fritz,John Jong Suk Lee,Paul Mon-WahChan,Orin Del Vecchio
申请号：US15286625申请日：20161006
公开号：US20170132617A1公开日：20170511
专利附图：
摘要：A message processing server includes a message processor and a database of
multi-layer tokens. Each token in the database includes a plurality of encrypted datalayers. The first layer includes the second layer and a first pointer. The second layerincludes a second pointer. The message processor is configured to receive a first
authorization message including a first cryptographic key and a second value; decrypt thefirst layer of one of the tokens with the first key; validate the first pointer by receivingconfirmation of the first pointer pointing to a database entry comprising the secondvalue; receive a second authorization message including a second cryptographic key and athird value; decrypt the second layer of the token with the second key; and validate thesecond pointer by receiving confirmation of the second pointer pointing to a databaseentry comprising a maximum data value not less than the third value.
申请人：The Toronto-Dominion Bank
地址：Toronto CA
国籍：CA
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