Title:
導出鍵を用いたセキュアメッセージングシステム
Document Type and Number:
Japanese Patent JP5265744
Kind Code:
B2
Abstract:
Secure messages may be sent between senders and recipients using symmetric message keys. The symmetric message keys may be derived from a master key using a key generator at an organization. A gateway may encrypt outgoing message using the derived keys. Senders in the organization can send messages to recipients who are customers of the organization. The recipients can authenticate to a decryption server in the organization using preestablished credentials. The recipients can be provided with copies of the derived keys for decrypting the encrypted messages. A hierarchical architecture may be used in which a super master key generator at the organization derives master keys for delegated key generators in different units of the organization. An organization may have a policy server that generates non-customer symmetric message keys. The non-customer symmetric message keys may be used to encrypt messages sent by a non-customer sender to a recipient at the organization.
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Inventors:
Guido Appenzeller
Xavier Boyen
Terence Spies
Xavier Boyen
Terence Spies
Application Number:
JP2011179515A
Publication Date:
August 14, 2013
Filing Date:
August 19, 2011
Export Citation:
Assignee:
Voltage Security, Incorporated
International Classes:
H04L9/08; G06F21/00; G06F21/33
Domestic Patent References:
| JP8204702A | ||||
| JP2001344537A | ||||
| JP2002185443A |
Attorney, Agent or Firm:
Hidesaku Yamamoto
Takaaki Yasumura
Natsuki Morishita
Takaaki Yasumura
Natsuki Morishita