/[gzz]/manuscripts/pointers/article.rst
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revision 1.90 by tjl, Mon Nov 3 14:51:43 2003 UTC revision 1.91 by tjl, Mon Nov 3 15:23:46 2003 UTC
# Line 253  to the system a pointer data block which Line 253  to the system a pointer data block which
253    
254  ..  |PointerID| raw:: latex  ..  |PointerID| raw:: latex
255    
256      {\sf PointerID}      {\idstyle PointerID}
257    
258  ..  |BlockID| raw:: latex  ..  |BlockID| raw:: latex
259    
260      {\sf BlockID}      {\idstyle BlockID}
261    
262  - the |PointerID|  - the |PointerID|
263  - the current pointee: a |BlockID|  - the current pointee: a |BlockID|
264  - a timestamp  - a timestamp
265  - (optionally) a list of pointer blocks *obsoleted* by this pointer block  - (optionally) a list of pointer blocks *obsoleted* by this pointer block
266  - a digital signature of all the above data, using the private  - a digital signature of all the above data, using the private
267    key corresponding to the public key in the PointerID    key corresponding to the public key in the |PointerID|
268    
269  Then we can define, using the reverse indexing framework  Then we can define, using the reverse indexing framework
270  of the block abstraction, index functions such as the following:  of the block abstraction, index functions such as the following:
271    
272  - all pointer blocks with the given PointerID  - all pointer blocks with the given |PointerID|
273  - all pointer blocks with the given PointerID with timestamps in the given range  - all pointer blocks with the given |PointerID| with timestamps in the given range
274  - the latest (timestamp / unobsoleted) pointer block with the given PointerID  - the latest (timestamp / unobsoleted) pointer block with the given |PointerID|
275    (this index will benefit from the ability to determine locally the "relevant"    (this index will benefit from the ability to determine locally the "relevant"
276    blocks for a given index)    blocks for a given index)
277    

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