Unformatted text preview: signed. (1) Alice and Bob agree on a date by which the signing protocol should be completed. (2) Alice and Bob decide on a probability difference that they are willing to live with. For example, Alice might decide that she is not willing to be bound with a greater probability than 2 percent over Bob’s probability. Call Alice’s difference a; call Bob’s difference b. (3) Alice sends Bob a signed message with p = a. (4) Bob sends Alice a signed message with p = a + b. (5) Let p be the probability of the message Alice received in the previous step from Bob. Alice sends Bob a signed message with p´ = p + a or 1, whichever is smaller. (6) Let p be the probability of the message Bob received in the previous step from Alice. Bob sends Alice a signed message with p´ = p + b or 1, whichever is smaller. (7) Alice and Bob continue alternating steps (5) and (6) until both have received messages with p = 1 or until the date agreed to in step (1) has passed. Previous Table of Contents Next Products  Contact Us  About Us  Privacy  Ad Info  Home Use of this site is subject to certain Terms & Conditions, Copyright © 19962000 EarthWeb Inc. All rights reserved. Reproduction whole or in part in any form or medium without express written permission of EarthWeb is prohibited. Read EarthWeb's privacy statement. To access the contents, click the chapter and section titles. Applied Cryptography, Second Edition: Protocols, Algorthms, and Source Code in C (cloth)
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Brief Full Advanced Search Search Tips (Publisher: John Wiley & Sons, Inc.) Author(s): Bruce Schneier ISBN: 0471128457 Publication Date: 01/01/96 Search this book:
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 As the protocol proceeds, both Alice and Bob agree to be bound to the contract with a greater and greater probability. For example, Alice might define her a as 2 percent and Bob might define his b as 1 percent. (It would be nice if they had chosen larger increments; we will be here for a while.) Alice’s first message might stat...
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 Fall '10
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 Cryptography, Bruce Schneier, Applied Cryptography, EarthWeb, Search Search Tips

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