[C++/OpenSSL]kleiner Frage zu EVP

EVP* t = new EVP();
cout << t->sign(msg, msgLen, &sign, &signLen)<<endl;
cout << t->verify(msg, msgLen, sign, signLen);
unsigned char* pub;
int pubLen;
cout << t->getPublicKey(&pub, &pubLen) << endl;
		
cout << pubLen << endl;
cout << t->setPublicKey(pub, pubLen); //problem here

bool class::getPublicKey(unsigned char** outpub, int* outlen)
{ 
	*outlen= i2d_PUBKEY(pKey, NULL); 
	*outpub= (unsigned char*)OPENSSL_malloc(*outlen+ 1);
	i2d_PUBKEY(pKey, outpub);
}

bool class::setPublicKey(char* pubKey, int pubKeyLen)
{
pKey= d2i_PUBKEY(NULL, (const unsigned char**)&pubKey, pubKeyLen); //pKey: EVP_PKEY* 
if(!pKey)
{

	char error[1024];
	printf("error:%s\n", ERR_error_string(ERR_get_error(), error)); //wird ausgegeben
}
}

bool class::getPublicKey(unsigned char** outpub, int* outlen)
{ 
    *outpub = NULL;
    *outlen = i2d_PUBKEY(pKey, outpub);
}