string SignLicense(AutoSeededRandomPool &rng, string strContents, string pass)
{
//Read private key
string encPrivKey;
StringSink encPrivKeySink(encPrivKey);
FileSource file("secondary-privkey-enc.txt", true, new Base64Decoder);
file.CopyTo(encPrivKeySink);
//Read initialization vector
byte iv[AES::BLOCKSIZE];
CryptoPP::ByteQueue bytesIv;
FileSource file2("secondary-privkey-iv.txt", true, new Base64Decoder);
file2.TransferTo(bytesIv);
bytesIv.MessageEnd();
bytesIv.Get(iv, AES::BLOCKSIZE);
//Hash the pass phrase to create 128 bit key
string hashedPass;
RIPEMD128 hash;
StringSource(pass, true, new HashFilter(hash, new StringSink(hashedPass)));
//Decrypt private key
byte test[encPrivKey.length()];
CFB_Mode<AES>::Decryption cfbDecryption((const unsigned char*)hashedPass.c_str(), hashedPass.length(), iv);
cfbDecryption.ProcessData(test, (byte *)encPrivKey.c_str(), encPrivKey.length());
StringSource privateKeySrc(test, encPrivKey.length(), true, NULL);
//Decode key
RSA::PrivateKey privateKey;
privateKey.Load(privateKeySrc);
//Sign message
RSASSA_PKCS1v15_SHA_Signer privkey(privateKey);
SecByteBlock sbbSignature(privkey.SignatureLength());
privkey.SignMessage(
rng,
(byte const*) strContents.data(),
strContents.size(),
sbbSignature);
//Save result
string out;
Base64Encoder enc(new StringSink(out));
enc.Put(sbbSignature, sbbSignature.size());
enc.MessageEnd();
return out;
}
RSA::PrivateKey CRSAEncryptDecrypt::getPrivateKey(std::string pathToKeyStorage)
{
LOG4CPLUS_INFO(msLogger, "getPrivate()");
timeval begin, end;
double elapsedTime;
gettimeofday(&begin, NULL);
if(!privateKeyGenerated)
{
//try to read it from file
std::string filePath = pathToKeyStorage+"/private.k";
LOG4CPLUS_INFO(msLogger, "getPrivate(): filepath="+filePath);
ifstream inFile;
size_t size = 0;
inFile.open(filePath.c_str(), ios::in|ios::binary|ios::ate );
if(inFile.good()) // the file is there and is readable
{
LOG4CPLUS_INFO(msLogger, "getPrivate(): retrieving previously stored data");
char* signedData = 0;
inFile.seekg(0, ios::end); // set the pointer to the end
size = inFile.tellg() ; // get the length of the file
inFile.seekg(0, ios::beg); // set the pointer to the beginning
signedData = new char[size];
inFile.read( signedData, size );
inFile.close();
UInt8 * unSignedData = new UInt8[size];
memcpy(unSignedData, signedData, size);
CryptoPP::ByteQueue queue;
queue.Put(unSignedData, size);
rsaPrivate.Load(queue);
delete[] signedData;
delete[] unSignedData;
}
else // the file is not there
{
LOG4CPLUS_INFO(msLogger, "getPrivate(): no key stored, generating");
AutoSeededRandomPool rnd;
rsaPrivate.GenerateRandomWithKeySize(rnd, 2048);
// storing in file
LOG4CPLUS_INFO(msLogger, "getPrivate(): saving generated file");
CryptoPP::ByteQueue queue;
rsaPrivate.Save(queue);
UInt32 queueSize = queue.CurrentSize();
UInt8* outgoingData = new UInt8[queueSize];
queue.Get(outgoingData, queueSize);
std::ofstream outputBufferHere(filePath.c_str(), std::ios::binary|std::ios::out);
char * signedOutputData = new char[queueSize];
memcpy(signedOutputData, outgoingData, queueSize);
outputBufferHere.write(signedOutputData, queueSize);
outputBufferHere.close();
delete[] outgoingData;
delete[] signedOutputData;
}
privateKeyGenerated = true;
}
gettimeofday(&end, NULL);
elapsedTime = (end.tv_sec - begin.tv_sec) * 1000.0; // sec to ms
elapsedTime += (end.tv_usec - begin.tv_usec) / 1000.0; // us to ms
std::ostringstream s;
s << "(" << elapsedTime << ") ms";
LOG4CPLUS_INFO(msLogger, "Time elapsed generating private key: ");
LOG4CPLUS_INFO(msLogger, s.str());
return rsaPrivate;
}