Revocation Of Cryptographic Keys In The Absence Of A Trusted Central Authority

  • Published: Sep 1, 2016
  • Earliest Priority: May 07 2016
  • Family: 3
  • Cited Works: 2
  • Cited by: 17
  • Cites: 0
  • Additional Info: Full text
Abstract

A method and apparatus is presented for revoking cryptographic keys within a distributed ledger system in which no central trusted authority is available, consisting of sending a key revocation message by a network connected device to other network connected devices over a peer-to-peer network for inclusion in a ledger. In one embodiment the revocation message is signed using a private key of a public/private key pair to be revoked. In another embodiment an authorization for future revocation of the public/private key pair by a plurality of other public/private keys is sent for inclusion in the ledger, and subsequently the key revocation message is signed with one of the private keys of the plurality of public/private key pairs before sending the key revocation message. Once a valid key revocation message is included in the ledger, any future request to include a message signed by the revoked cryptographic key is rejected.


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Document History
  • Publication: Sep 1, 2016
  • Application: May 7, 2016
    US US 201615149089 A
  • Priority: May 7, 2016
    US US 201615149089 A

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