Download Shareware and Freeware Software for Windows, Linux, Macintosh, PDA

line Home  |  About Us  |  Link To Us  |  FAQ  |  Contact

Serving Software Downloads in 976 Categories, Downloaded 29.612.715 Times

Coinflip 1.1

  Date Added: September 09, 2010  |  Visits: 662

Coinflip

Report Broken Link
Printer Friendly Version


Product Homepage
Download (75 downloads)



Coinflip provides a cryptographically secure server/client program and protocol for choosing random bits. Coinflip is a client/server based program that can generate random bits for 2 people over the internet. The 2 people dont have to trust each other in order to convince each other that the bit is truly a random bit. Its called coinflip, of course, because flipping a coin in the real world is the equivalent of generating a random bit on a computer. (Its either heads or tails. Its either a 1 or a 0.) Coinflip uses a slightly modified version of the "Coin Flipping Using One-Way Functions" protocol outlined in Bruce Schneiers Applied Cryptography 2nd edition. This attack would work everytime Alice acted as the server in a coinflip procedure, providing Bob never realized that Alice was sending him the same y value every time. Or she could us it to trick multiple Bobs. While it is supposed to be computationally infeasible to compute collisions in one-way hash functions, recent papers suggest that if you have enough money and time, collisions can be precalculated. P. van Oorschot and M. Wiener in their paper, "Parallel collision search with application to hash functions and discreet logarithms", estimate that for $10 million (in 1994 US dollars), a collision could be found for MD5 in 24 days on average. (Thanks for the info, defrost). The solution is actually quite simple: Have both parties choose part of the random data, and use whatever size random number you like. Since Bob is expecting to see x contain his random data, Alices collision attack is nullified, and since Alice gets to put in her own data, she can make Bobs array attack infeasible..

Requirements: No special requirements
Platforms: Linux
Keyword: Choosing Coinflip Cryptographically Secure Miscellaneous Program Protocol Random Secure Security
Users rating: 0/10

License: Freeware Size: 20.48 KB
USER REVIEWS
More Reviews or Write Review


COINFLIP RELATED
Networking Tools  -  SRP 2.1.1
The Secure Remote Password protocol is the core technology behind the Stanford SRP Authentication Project. The Project is an Open Source initiative that integrates secure password authentication into existing networking applications. The...
1.4 MB  
Libraries  -  libSRTP 1.4.4
libSRTP library is an open-source implementation of the Secure Real-time Transport Protocol (SRTP) originally authored by Cisco Systems, Inc. It is available under a BSD-style license. SRTP is a security profile for RTP that adds...
512 KB  
Utilities  -  Edifice API 1.1.1
The Edifice API is an interface for programmers who wish to write a secure web program. Written in PHP, the API has support for templates, configuration files, DSN based database management, and is fully language independent.
153.6 KB  
Instant Messagers  -  FSIMP 0.0.6.0-pre1
FSIMP (Free Secure Instant Messaging Protocol) is an open and free IM protocol in the planning and implementation stages.
153.6 KB  
Education  -  Easy-SEND 1.0
Easy-SEND is an implementation of the SEND (SEcure Neighbor Discovery) protocol for IPv6. It is aimed to be used for learning and testing purposes. SEND is described in RFC 3971. Easy-SEND includes a tool (CGAGen) to generate and verify CGAs (RFC...
2.75 MB  
Text Chat Clients  -  Silky 0.5.4
Silky is a secure chat client for SILC protocol. The project was launched in summer 2003, motivated by the fact that there was no good graphical SILC client available. There was obvious demand for an easy to use client, as at the time there was...
235.52 KB  
Security Tools  -  Password Gen 1.0.0.0
Password Gen is a small and easy to use password generator utility that can quickly create random secure passwords. It features a simple and comprehensive interface that allows you to quickly generate the needed passwords. for WindowsXP, Vista, 7
 
Code Management Tools  -  SFTPBlackbox (VCL) 8.2.195
SFTPBlackbox VCL Edition is a comprehensive collection of native components that add add client-side and server-side support for SFTP (Secure File Transfer Protocol) to your Delphi / C++Builder / Kylix applications. SFTPBlackbox (VCL) is a tool...
 
FTP Clients  -  sftp-cloudfs 0.4
This is a SFTP (Secure File Transfer Protocol) interface to Rackspace Cloud Files and OpenStack Object Storage, providing a service that acts as a proxy between a SFTP client and a remote files/storage service. The username/password...
10.24 KB  
Desktop Utilities  -  ASCII Art Maker 1.4
Program for creation ASCII graphics Program Features: - random symbol - custom symbols - symbol selection - change font size - add background color - resize source image - load images: BMP, JPG, GIF, PNG - save as HTML, TXT, BMP, JPG, GIF, PNG
475 KB  
NEW DOWNLOADS IN LINUX SOFTWARE, SECURITY TOOLS
Linux Software  -  Polling Autodialer Software 3.4
ICTBroadcast Auto Dialer software has a survey campaign for telephone surveys and polls. This auto dialer software automatically dials a list of numbers and asks them a set of questions that they can respond to, by using their telephone keypad....
488 B  
Linux Software  -  Total Video Converter Mac Free 3.5.5
Total Video Converter Mac Free developed by EffectMatrix Ltd is the official legal version of Total Video Converter which was a globally recognized brand since 2006. Total Video Converter Mac Free is a free but powerful all-in-one video...
17.7 MB  
Linux Software  -  Skeith mod_log_sql Analyzer 2.10beta2
Skeith is a php based front end for analyzing logs for Apache using mod_log_sql.
47.5 KB  
Linux Software  -  SLAX 6.0+
Slax is a modern, portable, small and fast Linux operating system with a modular approach and outstanding design. Despite its small size, Slax provides a wide collection of pre-installed software for daily use, including a well organized graphical...
190 KB  
Linux Software  -  GTK+ 2.5
GTK+, which stands for the GIMP Toolkit, is a library for creating graphical user interfaces for the X Window System. It is designed to be small, efficient, and flexible. GTK+ is written in C with a very object-oriented approach. Language bindings...
60 MB  
Security Tools  -  Free AntiSpyware 7.2.5
As powerful and professional anti-spyware software, Free AntiSpyware has ability to detect & stop the latest and most malicious programs that are doing harm to your computer and breaking your privacy. This free spyware remover software helps...
128.08 MB  
Security Tools  -  paraproxy 1.1
paraproxy is a supplement library for paramiko which adds support for SSH2 proxy commands. #md5=0c7041e8d2d7e49b09df526bba3efb28 #md5=1fbb4f888f40a01439ff27458c6210eb #md5=493c0f426e376427c30f3f39ebc8dac1
20.48 KB  
Security Tools  -  pam_smxs 1.6
pam_smxs is a PAM module that authenticates a user using challenge-response. All tokens that support ANSI X9.9 are currently supported and it provides full support for CryptoCard RB1 tokens.
522.24 KB  
Security Tools  -  DoudouLinux 2011-11
DoudouLinux [1] is a system specially designed for children to make computer use as easy and pleasant as possible for them (and for their parents too! [2]). DoudouLinux provides tens of applications that suit children from 2 to 12 years and tries...
964.17 MB  
Security Tools  -  django-auth-ldap 1.0.19
This authentication backend enables a Django project to authenticate against any LDAP server. To use it, add django_auth_ldap.backend.LDAPBackend to AUTHENTICATION_BACKENDS. It is not necessary to add django_auth_ldap to INSTALLED_APPLICATIONS...
30.72 KB