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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. 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

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  1. SMIME: Symmetric Key Distribution draft-ietf-smime-symkeydist-00.txt Sean Turner <turners@ieca.com>

  2. 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 …

  3. Architecture +----------------------+ | Key Management Agent | +----------------------+ | +------------------+ | Group Management | | Agent | | +-------+ | | | Group | | | |List(s)| | | +-------+ | | / | \ | +------------------+ / | \ / | \ +----------+ +---------+ +----------+ | Member 1 | | ... | | Member n | +----------+ +---------+ +----------+

  4. +----------+ +----------+ | GL Owner | <---+ +----> | Member 1 | +----------+ | | +----------+ | | +-----+ +-----+ <-+ | +----------+ | KMA | <-------> | GMA | <-----------+----> | ... | +-----+ +-----+ | +----------+ | | +----------+ +----> | Member n | +----------+ Protocol Interactions

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