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- From: huff@mcclb0.med.nyu.edu (Edward J. Huff)
- Newsgroups: bionet.software
- Subject: Re: Computerized lab notebook?
- Message-ID: <huff-260193182625@pgl6.chem.nyu.edu>
- Date: 26 Jan 93 23:47:00 GMT
- References: <1993Jan22.175120.23156@gserv1.dl.ac.uk>
- Sender: notes@cmcl2.nyu.edu (Notes Person)
- Followup-To: bionet.software
- Distribution: bionet
- Organization: NYU Chemistry Dept.
- Lines: 51
- Nntp-Posting-Host: pgl6.chem.nyu.edu
-
- In article <1993Jan22.175120.23156@gserv1.dl.ac.uk>, ajt@rri.sari.ac.uk
- (Tony Travis) wrote:
- >
- > In article <93122162041.MIN-LDGBa29809.bionet-news@uk.ac.daresbury> you wrote:
- > : [...lab notebook stuff]
- > : 3. No one has mentioned published encrypted summary data. Somewhere
- > : I read about (but have not personally seen) services which take any
- > : data file and produce from a large file a small "signature" which
- > : is published in the classified section of a microfilmed newspaper.
- > : Experts will testify that it is essentially impossible to produce
- > : a file which matches the signature and is not the original.
- >
- > Am I totally misunderstanding what you say, or are you just describing
- > the function of CRC's ?? The combination a file's length in bytes and
- > its 32-bit CRC (cyclic redundancy check) is virtually unique and serves
- > to validate many software packages. This, in essence, is no different
- > to validating experimental records as original.
-
- The purpose of the newspaper classified ads containing these signature
- numbers is to be able to prove in court that a file containing the data
- existed prior to the date of publication of the newspaper. A simple
- CRC would not be adequate because alterations of the data would be
- feasible: if you want to change one number somewhere in your file,
- you just need to find out a compensating change somewhere else that
- gives the same CRC. The encrypted signature function makes this
- essentially
- impossible. This answers the objection to computerized lab notebooks
- which asserts that they can be altered after the fact undetectably.
-
- >
- > : What is needed to make computerized lab notebooks feasible
- > : is a similar service on the internet (maybe BioSci could offer it)
- > : where "signature" files could be publically posted and permantly
- > : archived in such a way that they could not be modified without
- > : the cooperation of many people (and no one could be certain that
- > : someone else didn't keep another copy somewhere). E.G. create
- > : a newsgroup for these files, and let anyone who wants to archive
- > : it.
- >
- > What is needed to make data accessible is ISDN!!
-
- I was addressing the validation problem, not the accessibility problem.
- But ISDN (or better, fiber optics carrying cable TV and internet service
- to each home) would help.
-
- [...]
- --
- Edward J. Huff huff@mcclb0.med.nyu.edu (212)998-8465
- Keck Laboratory for Biomolecular Imaging
- NYU Chemistry Deptartment, 31 Washington Place, New York NY 10003
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