[cryptography] Message encryption standards?

Paul Crowley paul at ciphergoth.org
Tue May 10 07:45:25 EDT 2011

Most standards that include encryption are to do with transport-level 
encryption (SSL, SSH, IPSec/IKE, WPA etc). However, OpenPGP, XML 
encryption, and CMS all offer a mode of operation more like this:

- Bob sends Alice a packet that includes a public key for encryption
- Offline, Alice can take this packet and a message and generate an 
encrypted message
- The message reaches Bob by whatever means
- Bob decrypts it

Are there other standards of this shape that I've left out here?  Thanks!
\/ o\ Paul Crowley, paul at ciphergoth.org
/\__/ http://www.ciphergoth.org/

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