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Digital Notary System [looks like a good thing to look at djf]
From: David Farber <farber () central cis upenn edu>
Date: Thu, 13 Apr 1995 16:29:38 -0400
Posted-Date: Wed, 12 Apr 1995 22:11:20 -0400 Date: Wed, 12 Apr 1995 21:12:39 -0500 From: shaynes () research westlaw com (Steve Haynes) To: farber () central cis upenn edu Subject: Digital Notary System Dave - I don't recall if digital time-stamping, Digital Notary, or Surety Technologies have been profiled to IPers before, but having just learned of their Web Home Page, I thought I'd pass this along. The Digital Notary System is one of the more exciting cryptography-related technologies to come along in recent years. (I have no financial interest in Surety or its products.) Surety's homepage is at http://www.surety.com. To quote from part of Surety's promotional material: "Surety's product, the Digital Notary (tm) System, is an inexpensive, easy and cryptographically secure system for electronically certifying digital documents and electronic records, unimpeachably proving when they were created. The Digital Notary System combines coordinating servers with a software program that resides on your desktop personal computer or server. Ironically, the system is so secure that it can use the Internet -- with its cost and accessibility advantages -- as a service delivery vehicle. "In response to your command or a trigger in an application, the Digital Notary software creates a unique "digital fingerprint," or hash code, for a digital document or record. The software then sends the fingerprint to a Digital Notary coordinating server , via your Internet connection, a leased line or dial-up connection. The coordinating server mathematically combines the fingerprint with other fingerprints coming in at the same time, into "trees" that close at one-second intervals. Each tree has its own hash code, which becomes part of a permanent Universal Validation Record. The Universal Validation Record links each second in time with its hash code, which is mathematical shorthand for the fingerprints of all the documents received during that second. "The coordinating server then electronically transmits back to your computer the verifying data necessary to validate your document. This information includes a timestamp that, when mathematically combined by the Digital Notary software with your document's digital fingerprint, links your document to the Universal Validation Record. Your Digital Notary software then issues a certificate for the document and stores it in a local Digital Notary database or other database you designate. The entire certification process takes only seconds." Most important, however, a personal version of Digital Notary has now become available, so that individuals who may not have corporate or institutional access to the service can nonetheless digitally time-stamp their documents and secure whatever rights might be associated with a precise authentication of _when_ and _in what form_ a document first existed: "To introduce the Digital Notary System to individuals, a special single-user version, called the Personal Edition for Windows, is available over the Internet via FTP to ftp.surety.com or by downloading it from Surety's World Wide Web storefront, http://www.surety.com (Web server available online as of February 1). The Personal Edition costs $49, which includes account set-up, Personal Edition software, and 50 certificates. Users can order additional Digital Notary certificates over the Internet at a price of $37.50 for 50 certificates. A Personal Edition for Sun SPARC will be available within 45 days." Well, the Personal Edition is indeed available (Item #3, "New Account Center" on Surety's homepage). Several possible uses occur to me: 1. Scholarly research data or papers can be time-stamped by their authors to establish priority of discovery/research/ writing. 2. Those who might witness wrongdoing or fraud (and especially who might have an opportunity to a claim under one or another Whistleblower law) could encrypt an account of the matter and then time-stamp the encrypted document. 3. Combined with digital signatures authenticated by a trusted agent, the precise terms of a digital agreement could be established -- there's no precedent for it yet in law, however. Well, anyway, it's all commended to IPers' attention. Steve Haynes * Stephen L. Haynes Internet: shaynes () research westlaw com * Manager, WESTLAW Research MCI Mail: 221-3969 * & Development Compuserve: 76236,3547 * West Publishing Company Phone: 612/687-5770 * 610 Opperman Drive Fax: 612/687-7907 * Eagan, MN 55123 .
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- Digital Notary System [looks like a good thing to look at djf] David Farber (Apr 13)