doing an EC point multiplication

Hi,

I'm a complete noob to crypto++, but I was looking for
a software library that could perform some EC operations.

At the moment I'm am implementing a protocol. For this I need
to perform an elliptic curve point multiplication. After some
browsing the internet, looking into the manuals and reading the
mailing list, I could find any info on that :(

Could someone please point me to a usefull resource, on which
I can find some info on how to perform an EC point multiplication ?

Many thanks

grtz
jo

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Re: doing an EC point multiplication

On Feb 1, 3:01 am, jovliegen <jovlie... <at> gmail.com> wrote:
> Hi,
>
> I'm a complete noob to crypto++, but I was looking for
> a software library that could perform some EC operations.
>
> At the moment I'm am implementing a protocol. For this I need
> to perform an elliptic curve point multiplication. After some
> browsing the internet, looking into the manuals and reading the
> mailing list, I could find any info on that :(
>
> Could someone please point me to a useful resource, on which
> I can find some info on how to perform an EC point multiplication ?
From http://www.cryptopp.com/wiki/Elliptic_Curve_Cryptography:
"Elliptic Curve Domain Parameter Validation. The program dumps the
Public and Private keys, and validates the curve per Certicom's SEC 2
Whitepaper (the curve used for demonstration purposes is NIST P-192).
In addition, the program demonstrates mathematics with the point of
infinity and scalar multiplications using Crypto++."

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Signature Verification Issue, PHP or C++?

Hello, I'm trying to use CryptoPP for RSA encryption and to interface it
between PHP and C++.

So I have a little test program on my web server that is using phpseclib to
generate RSA keypairs for what eventually will be the "CA" key. the only
problem is the output on PHP is saying that verification is correct, while
C++ is saying otherwise due to the following error: "PK_Signer: key too
short for this signature scheme". How can I go about fixing this.

PHP w/ output:
<?php

echo "BEGIN SIGN <p>";
include("../php/Crypt/RSA.php");

$rsa = new Crypt_RSA();
extract($rsa->createKey(512));

$plaintext = 'terrafrost';

echo "PRIV: ". $privatekey ." <p>";
echo "PUB: ". $publickey ." <p>";

$rsa->loadKey($privatekey);
$signature = $rsa->sign($plaintext);

echo "S: ".$signature."<p>";
echo "H: ".bin2hex($signature)."<p>";

Re: [cryptopp] #11: include a field for a distribution- or variant- specific version number

#11: include a field for a distribution- or variant- specific version number
------------------------+---------------------------------------------------
Reporter:  zooko        |     Owner:     
    Type:  enhancement  |    Status:  new
Priority:  major        |   Version:     
Keywords:               |  
------------------------+---------------------------------------------------
Changes (by zooko):

 * cc: zooko <at> …, zooko (added)

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Ticket URL: <http://sourceforge.net/apps/trac/cryptopp/ticket/11#comment:1>
cryptopp <http://sourceforge.net/projects/cryptopp/>
SF-project cryptopp

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information about library crypto++

hello
i'm working on a project using cipher algorythm.
i choose RC6 based AES algo for different reasons, i would like to
know if the algo rc6 was implemented in the library crypto++

another question : does the library crypto++ is enabled to create
128/196/256 bit key

best regards

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Re: information about library crypto++

[Cryptopp5.1]How to solve RSA Encryption using PrivateKey with No Padding?

Re: [Cryptopp5.1]How to solve RSA Encryption using PrivateKey with No Padding?

It would be very nice if crypto++ support lzma algorithm

and this project may be helpful:
http://www.nongnu.org/lzip/lzlib.html

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Re: It would be very nice if crypto++ support lzma algorithm

I guess we should have Huffman first! Seriously why don't you just use 
that particular lib you were suggesting? Also have you even had a look 
at that thing you suggested? It's GPL licensed which isn't compatible to 
cryptopp. Actually it kinda is, but it would virally infect cryptopp 
with GPL which surely won't happen!

Thanks, but no thanks!

On 2/8/11 6:19 PM, ASBai wrote:
> and this project may be helpful:
> http://www.nongnu.org/lzip/lzlib.html
>

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