[Gzz-commits] manuscripts/storm short-paper.rst

[Tuomas J. Lukka]

CVSROOT:        /cvsroot/gzz
Module name:    manuscripts
Changes by:     Tuomas J. Lukka <address@hidden>        03/05/30 10:01:11

Modified files:
        storm          : short-paper.rst 

Log message:
        More

CVSWeb URLs:
http://savannah.gnu.org/cgi-bin/viewcvs/gzz/manuscripts/storm/short-paper.rst.diff?tr1=1.22&tr2=1.23&r1=text&r2=text

Patches:
Index: manuscripts/storm/short-paper.rst
diff -u manuscripts/storm/short-paper.rst:1.22 
manuscripts/storm/short-paper.rst:1.23
--- manuscripts/storm/short-paper.rst:1.22      Fri May 30 09:55:49 2003
+++ manuscripts/storm/short-paper.rst   Fri May 30 10:01:11 2003
@@ -173,12 +173,21 @@
 manipulate the blocks.
 This seems like a bad tradeoff: while these identifiers
 enable secure location-independent references, they 
-are also less comprehensible for humans and do not allow
-the documents referred to by the identifiers to change.
+do not allow
+the documents referred to by the identifiers to change 
+and
+are also less comprehensible for humans.
 However, Storm is able to address both downsides by
 simple cryptographic techniques.
 
-
+One of the key innovations in storm is the use 
+of *pointer blocks*
+to build mutable documents on top of
+the lowest-layer append-and-delete-only model.
+A pointer block is simply a storm block which says
+``The identifier X points to document Id, overriding 
+the previous pointer blocks a, b`` and contains
+a digital signature of the above information.
 
 ..          storing
            documents on the desktop and publishing and retrieving
@@ -198,11 +207,10 @@
 The URN is constructed analogously to a DATA URI (RFC XXX)
 from the hash and the content-type.
 
-
-Our system implements append-and-delete-only
-storage; past versions of documents are stored
-unless deleted explicitly. It is possible to
-store only the differences between versions.
+..  Our system implements append-and-delete-only
+    storage; past versions of documents are stored
+    unless deleted explicitly. It is possible to
+    store only the differences between versions.
 
 Interfacing
 ===========