for compare the strength of different symmetric key algorithm, i am trying to develop new algorithm and want to check its strength
Test should be based on National Institute of Standard Technology (NIST) randomness tests.
A. Rukhin, et al. "A Statistical Test Suite for Random and Pseudo-random Number Generators for Cryptographic Applications”, NIST Special Publication 800-22, 2001.
You can find many website make this test.
There are indeed for PRNG. However, if you mean testing symmetric and asymmetric cryptosystems for trapdoors and security holes, i think this must be done through cryptanalysis and analytical simulations.
To conduct the proper cryptoattack in conjunction with the analytical simulation. You may consider developing an reverse engineering algorithm and assess each based on the volume of computation and its duration.
AVISPA Tool can be used for the Automated Validation of Internet Security Protocol
http://www.avispa-project.org/web-interface/basic.php
Such software does not exist. Some cryptanalysts may have piece of code that looks for the best linear/differential path or looks for the best biclique attack complexity or looks for rebound distinguishers or derives a polynomial system describing part of the cipher, ...
As you see there is a large panel of known attacks. to evaluate a symmetric algorithm you should first take a look at the best attacks you could mount for each of the known techniques then you should publish the algorithm and hope it will attract some of the cryptanalysts of the community.
Then, if after few years nobody found something (and indeed people did took a look) then may be the algorithm is secure.
Soon. The algorithms for checking the strength will be published. We are on final stage in making them public.
Security of PRNG or NIST's randomness tests are irrelevant to the original question of "the strength of cryptography algorithms". AVISPA is one tool but there are others. Yet, none of them can detect all vulnerabilities. And once you say E(message, key), the tools assume your encryption function E() is secure. May be you want to use a tool like the one at cryptool.org. It is a lower level software test for cryptographic algorithms.
1-NIST statistical test will help u to estimate the randomness of your RNG
2- then you need to test your s-box
3- also you need to check state functions
4- last you need to use Known anser test to your algorithm
if u need those tests you can find it on internet or contact me on my email nd I will send it to you
For educational tool that may help you see cryptool: https://www.cryptool.org/en/
NO SINGLE DEFINITION OF SECURITY STRENGTH..
FINALLY CIPHER TEXT MAY BE TESTED BY CRYPTANALYSIS TOOLS..
LINEAR AND Differential cryptanalysis tools are, there to test VARIOUS CRYPTOGRAPHY PARAMETERS TO ENSURE SECURITY...
16 PARAMETERS OF S BOX NEED TO BE TESTED USING A NO OF SOFTWARE TOOLS ARE AVAILABLE
LIKE SET TOOL
BSbox Tool
Matlab Software tool
Software for S box performance index testing
Hi,
You can use scyther security tool.
Please refer to my paper:
"An authenticated, secure, and mutable multiple‐session‐keys protocol based on elliptic curve cryptography and text‐to‐image encryption algorithm" for more information.
Hope this being helpful
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