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SMIME: Symmetric Key Distribution. draft-ietf-smime-symkeydist-00.txt Sean Turner <turners@ieca.com>. Design Goals. Want a transport independent mechanism for distribution of symmetric keys to a group of users. The mechanism must use CMS.

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smime symmetric key distribution
SMIME: Symmetric Key Distribution

draft-ietf-smime-symkeydist-00.txt

Sean Turner

<turners@ieca.com>

design goals
Design Goals
  • Want a transport independent mechanism for distribution of symmetric keys to a group of users.
  • The mechanism must use CMS.
  • Reuse group/list management techniques (listserv, majordomo, etc.)
    • Didn’t want to reinvent the wheel, but …
architecture
Architecture

+----------------------+

| Key Management Agent |

+----------------------+

|

+------------------+

| Group Management |

| Agent |

| +-------+ |

| | Group | |

| |List(s)| |

| +-------+ |

| / | \ |

+------------------+

/ | \

/ | \

+----------+ +---------+ +----------+

| Member 1 | | ... | | Member n |

+----------+ +---------+ +----------+

protocol interactions

+----------+ +----------+

| GL Owner | <---+ +----> | Member 1 |

+----------+ | | +----------+

| |

+-----+ +-----+ <-+ | +----------+

| KMA | <-------> | GMA | <-----------+----> | ... |

+-----+ +-----+ | +----------+

|

| +----------+

+----> | Member n |

+----------+

Protocol Interactions