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Apparatus and method for depositing encryption keys

  • US 6,845,160 B1
  • Filed: 10/14/1999
  • Issued: 01/18/2005
  • Est. Priority Date: 11/12/1998
  • Status: Expired due to Term
First Claim
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1. An encryption key depositing apparatus, comprising:

  • a unit that generates an encryption key for a user;

    a unit that starts a process in response to the generation of said encryption key, said process allowing a depositary, with which said generated encryption key was deposited, to store said key in a subsequently recoverable manner; and

    a server and a plurality of clients, wherein recovery information, usable to recover said encryption key, is encrypted by a public key of said depositary and is retained in said server, wherein said server, in response to a recovery request from the depositary, sends to said depositary said recovery information encrypted by said public key of said depositary, and acquires from said depositary said recovery information decrypted by a private key of said depositary and then encrypted by a public key of said server.

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