I can't reproduce this error. Please post the following information (as
requested on Crypto++ website under Mailing List)
* stack trace (please copy from the call stack window of your debugger,
or use the "bt" command in gdb)
* a minimal program with a main() function, that reproduces the problem
* version of Crypto++, operating system (output of "uname -a" command if
using Unix), and compiler (output of "gcc -v" if using GCC)
--------------------------------------------------
From: "Max Sivkov" <[EMAIL PROTECTED]>
Sent: Thursday, November 20, 2008 5:18 AM
To: "Crypto++ Users" <[EMAIL PROTECTED]>
Subject: Re: creating public key using only public point data
>
> ECC_ALGORITHM is a define for CryptoPP::EC2N
>
> On Nov 20, 3:16 pm, Max Sivkov <[EMAIL PROTECTED]> wrote:
>> Hello Crypto++ gurus!
>>
>> I need to create a public key based on a public pint data for future
>> comparation with SHA1 coded signature
>> here is my code:
>>
>> SecByteBlock pubkey = Base64Decode(pubkey_base64);
>>
>> // Thanks Wei Dai!
>> CryptoPP::ECIES< CryptoPP::EC2N >::PublicKey PublicKey;
>> PublicKey.AccessGroupParameters().Initialize(CryptoPP::ASN1::sect163k1
>> ());
>>
>> PublicKey.GetGroupParameters().GetCurve().DecodePoint(p, pubkey,
>> PublicKey.GetGroupParameters().GetCurve().EncodedPointSize(true));
>> PublicKey.SetPublicElement(p);
>> AutoSeededX917RNG<AES> m_rng;
>> bool status = PublicKey.Validate(m_rng, 3); // status returns true, so
>> far so good
>> CryptoPP::ECIES<ECC_ALGORITHM>::Encryptor Encryptor(PublicKey);// At
>> this line I had the following exception:
>> ----
>> CryptoPP::Exception caught: NameValuePairs: type mismatch for
>> 'ThisObject:class
>> CryptoPP::DL_PublicKeyImpl<class CryptoPP::DL_GroupParameters_EC<class
>> CryptoPP:
>> :EC2N> >', stored 'class CryptoPP::DL_PublicKeyImpl<class
>> CryptoPP::DL_GroupPara
>> meters_EC<class CryptoPP::EC2N> >', trying to retrieve 'class
>> CryptoPP::DL_Publi
>> cKey_EC<class CryptoPP::EC2N>'
>> -----
>>
>> Could anybody help me with this?
> >
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