[tahoe-dev] [tahoe-lafs] #795: append-only files
tahoe-lafs
trac at allmydata.org
Sat Aug 22 16:28:17 PDT 2009
#795: append-only files
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Reporter: warner | Owner:
Type: enhancement | Status: new
Priority: major | Milestone: undecided
Component: code-mutable | Version: 1.5.0
Keywords: | Launchpad_bug:
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Comment(by warner):
oh, and of course, if the appendcap truely doesn't give you the ability to
read any data, then this needs a public encryption key (like RSA or El-
Gamal, not DSA). Each "append" message would have the data encrypted with
a randomly-generated symmetric key, and then the key would be encrypted to
the readcap's RSA decryption privkey.
There might be some other sort of "append-and-read-cap", which gives you
both the ability to append messages and to read the existing messages (but
not to remove anything: that is reserved for the writecap holder). I can
imagine use-cases for both. This sort of cap would have a more straight-
line derivation: writecap -> append-and-read-cap -> readcap.
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Ticket URL: <http://allmydata.org/trac/tahoe/ticket/795#comment:1>
tahoe-lafs <http://allmydata.org>
secure decentralized file storage grid
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