Invention Grant
US08229112B2 Decipherable searchable encryption method, system for such an encryption 有权
可解密的可搜索加密方法,这样的加密系统

  • Patent Title: Decipherable searchable encryption method, system for such an encryption
  • Patent Title (中): 可解密的可搜索加密方法,这样的加密系统
  • Application No.: US12281254
    Application Date: 2007-03-08
  • Publication No.: US08229112B2
    Publication Date: 2012-07-24
  • Inventor: Thomas FuhrPascal Paillier
  • Applicant: Thomas FuhrPascal Paillier
  • Applicant Address: FR Meudon
  • Assignee: Gemalto SA
  • Current Assignee: Gemalto SA
  • Current Assignee Address: FR Meudon
  • Agency: Buchanan Ingersoll & Rooney PC
  • Priority: FR0650869 20060315
  • International Application: PCT/EP2007/052196 WO 20070308
  • International Announcement: WO2007/104705 WO 20070920
  • Main IPC: H04L9/00
  • IPC: H04L9/00
Decipherable searchable encryption method, system for such an encryption
Abstract:
A method for encrypting/decrypting a message includes the initial step of generating keys by the sub-steps of generating a public key; generating a decryption key; and generating a derivation key. For a first entity, the message is encrypted using the public key and a cipher. For a second entity, the cipher is decrypted to find the message. A trapdoor associated with said message is generated. The trapdoor corresponds to a derivative of the derivation key specific to the message. A test cipher is tested, using the trapdoor associated with the message, to determine if the test cipher is an encryption of the message using the public key.
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