公开(公告)号：US20130290356A1

公开(公告)日：2013-10-31

申请号：US13460419

申请日：2012-04-30

申请人： Liu YANG ,  Prasad V. Rao ,  Pratyusa Kumar Manadhata ,  William G. Horne ,  Stuart Haber

发明人： Liu YANG ,  Prasad V. Rao ,  Pratyusa Kumar Manadhata ,  William G. Horne ,  Stuart Haber

IPC分类号： G06F17/30

CPC分类号： G06F17/30985

摘要： A method for submatch extraction may include receiving an input string, receiving a regular expression. The method may further include converting the regular expression with capturing groups into ordered binary decision diagrams (OBDDs) to extract submatches.

摘要翻译： 用于子匹配提取的方法可以包括接收输入字符串，接收正则表达式。 该方法还可以包括将具有捕获组的正则表达式转换为有序二进制决策图（OBDD）以提取子匹配。

公开(公告)号：US07136840B2

公开(公告)日：2006-11-14

申请号：US10128182

申请日：2002-04-22

申请人： Binyamin Pinkas ,  Tomas Sander ,  William G. Horne

发明人： Binyamin Pinkas ,  Tomas Sander ,  William G. Horne

IPC分类号： H04L9/00

CPC分类号： G06Q20/3829 ,  G06Q20/02 ,  G06Q20/401 ,  G06Q30/06 ,  G06Q2220/00

摘要： Systems and methods are provided for managing the transfer of electronic files. In one embodiment, a sender transfers an encrypted version of a file (such as a digitally encoded audio track, movie, document, or the like) to someone who wishes to receive it. The receiver computes a hash of the encrypted file, and sends it to a trusted third party. The trusted third party compares the hash that was computed by the receiver with another hash computed by the sender. If the two hashes match, the third party sends the file decryption key to the receiver. In some embodiments, the receiver may also send the third party payment information so that the sender, the content owner, and/or the third party can be paid for their role in the transaction. In a preferred embodiment, the payment information is only sent to, and/or used by, the third party once the third party has confirmed to the satisfaction of the receiver that the encrypted file in the receiver's possession will decrypt correctly. In some embodiments, the sender computes a hash of the encrypted version of the file and sends it directly to the third party. In other embodiments, the sender encrypts this hash using a key associated with the third party and sends the encrypted hash to the receiver, who then forwards it to the third party.