Hello,
In my application i generate an ECIES private/public key pair. Then i use
the private exponent and the public key point to initialize an ECDSA key
pair. Do i need to run validate() on the ECDSA key pair if i already
validated the ECIES key pair? Sample code is below.
Regards,
Stefan
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#define _DOUT_ std::cout << __FILE__ << ":" << __LINE__ << " "
CryptoPP::ECIES<CryptoPP::ECP>::PrivateKey privKey;
CryptoPP::ECIES<CryptoPP::ECP>::PublicKey pubKey;
CryptoPP::AutoSeededRandomPool rng;
privKey.Initialize(rng, CryptoPP::ASN1::secp521r1());
privKey.MakePublicKey(pubKey);
if (!privKey.Validate(rng, 3)) {
_DOUT_ << "Detected Problem with private key." << std::endl;
} else {
_DOUT_ << "Private key is ok!" << std::endl;
}
if (!pubKey.Validate(rng, 3)) {
_DOUT_ << "Detected Problem with public key." << std::endl;
} else {
_DOUT_ << "Public key is ok!" << std::endl;
}
_DOUT_ << "Creating signing and checking key" << std::endl;
CryptoPP::ECDSA<CryptoPP::ECP, CryptoPP::SHA256>::PrivateKey signingKey;
CryptoPP::ECDSA<CryptoPP::ECP, CryptoPP::SHA256>::PublicKey checkKey;
const CryptoPP::Integer &x = privKey.GetPrivateExponent();
signingKey.Initialize(CryptoPP::ASN1::secp521r1(), x);
signingKey.ThrowIfInvalid(rng, 3); // <- do i need this?
const CryptoPP::ECP::Point &p = pubKey.GetPublicElement();
checkKey.Initialize(CryptoPP::ASN1::secp521r1(), p);
checkKey.ThrowIfInvalid(rng, 3); // <- and this?
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