Thanks much to Victor Dostov and Ivan Kouznetsov for their short but very insightful discussion at DCSB of the paycash system. At my request, Victor has provided me with more information on the paycash transaction system, and blinding that it does in the course of moving money around. It is forwarded below. Cheers, Robert Hettinga, Moderator, The Digital Commerce Society of Boston --- begin forwarded text Reply-To: "Victor Dostov" <[EMAIL PROTECTED]> From: "Victor Dostov" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Subject: paycash: blind signature etc. Date: Tue, 1 Feb 2000 01:10:32 +0300 A more detailed description of the Paycash Internet payment system with some math is presented in the paper (13297 bt, zip-archive of rtf-document) at ftp://demo.paycash.ru/paycash.zip For our blind signature over RSA you can see at ftp://demo.paycash.ru/blsig.zip Also we obtained an independent experts' decision on the schemes of blind digital signature used in PayCash payment system. The examination was done for the purpose of algorithms used in the system verification, as well as patentability judgment. To accomplish such an expertise Bruce Schneier* the President of Counterpane Systems Company was invited. The basic topics of experts' decision are listed below. The whole text (zip-archive in Postscript format, 27 283 bites) is available here: ftp://demo.paycash.ru/schneier.zip More data is available at http://www.paycash.ru/new/english/ Best regards and thanks again VIctor --- end forwarded text ----------------- R. A. Hettinga <mailto: [EMAIL PROTECTED]> The Internet Bearer Underwriting Corporation <http://www.ibuc.com/> 44 Farquhar Street, Boston, MA 02131 USA "... however it may deserve respect for its usefulness and antiquity, [predicting the end of the world] has not been found agreeable to experience." -- Edward Gibbon, 'Decline and Fall of the Roman Empire'
