C++ AutoSeededRandomPool::GenerateBlock方法代码示例

    std::size_t genKeyIv(char* _chunk)
    {
        char* chunk = _chunk;
        CryptoPP::AutoSeededRandomPool rnd;

        {
            CryptoPP::SecByteBlock key(0x00, CryptoPP::AES::DEFAULT_KEYLENGTH);
            rnd.GenerateBlock(key, key.size());

            byte iv[CryptoPP::AES::BLOCKSIZE];
            rnd.GenerateBlock(iv, sizeof(iv));
            setEncKeyWithIv(key.data(), key.SizeInBytes(), iv, sizeof(iv));

            std::memcpy(chunk, key.data(), key.SizeInBytes());
            chunk += key.SizeInBytes();
            std::memcpy(chunk, iv, sizeof(iv));
            chunk += sizeof(iv);
        }

        {
            CryptoPP::SecByteBlock key(0x00, CryptoPP::AES::DEFAULT_KEYLENGTH);
            rnd.GenerateBlock(key, key.size());

            byte iv[CryptoPP::AES::BLOCKSIZE];
            rnd.GenerateBlock(iv, sizeof(iv));
            setDecKeyWithIv(key.data(), key.SizeInBytes(), iv, sizeof(iv));

            std::memcpy(chunk, key.data(), key.SizeInBytes());
            chunk += key.SizeInBytes();
            std::memcpy(chunk, iv, sizeof(iv));
            chunk += sizeof(iv);
        }
        return chunk - _chunk;
    }

bool Session::do_key_exchange()
{
   aes_buffer aes_tmp;

   CryptoPP::AutoSeededRandomPool prng;
   prng.GenerateBlock(this->aes.key, sizeof(aes_key));
   prng.GenerateBlock(this->aes.iv, sizeof(aes_iv));

   std::memcpy(&aes_tmp, &this->aes, sizeof(aes_buffer));

   CryptoPP::CFB_Mode<CryptoPP::AES>::Encryption encryptor(aes_hard_key, sizeof(aes_key),
      aes_hard_iv);
   encryptor.ProcessData((uint8_t*)&aes_tmp, (uint8_t const*)&this->aes, sizeof(aes_buffer));

   return (write(this->fd, &aes_tmp, sizeof(aes_buffer)) > 0);
}

void VhsmTest::testMac() {
    VHSM vhsm;
    ClientId cid;
    cid.pid = 0; cid.veid = 0;
    std::string user = "user";
    std::string password = "password";

    unsigned int mdsize;

    char msg[BUF_SIZE];
    std::vector<char> md;

    CryptoPP::AutoSeededRandomPool rnd;
    rnd.GenerateBlock((byte*)msg, BUF_SIZE);

    byte realmd[CryptoPP::HMAC<CryptoPP::SHA1>::DIGESTSIZE];
    CryptoPP::HMAC<CryptoPP::SHA1>((byte*)"", 0).CalculateDigest(realmd, (byte*)msg, BUF_SIZE);

    VhsmSession s = vhsm.openSession(cid);
    CPPUNIT_ASSERT_MESSAGE("login user failed", vhsm.loginUser(user, password, s.sid()));
    CPPUNIT_ASSERT_MESSAGE("macInit failed", vhsm.macInit(HMAC, SHA1, s.sid(), "") == ERR_NO_ERROR);
    CPPUNIT_ASSERT_MESSAGE("unsupported method accepted", vhsm.macInit((VhsmMacMechanismId)0, (VhsmDigestMechanismId)0, s.sid(), "") == ERR_BAD_MAC_METHOD);
    CPPUNIT_ASSERT_MESSAGE("macUpdate failed", vhsm.macUpdate(s.sid(), std::string(msg, BUF_SIZE)) == ERR_NO_ERROR);
    CPPUNIT_ASSERT_MESSAGE("invalid session id accepted", vhsm.macUpdate(s.sid() + 1, std::string(msg, BUF_SIZE)) == ERR_MAC_NOT_INITIALIZED);
    CPPUNIT_ASSERT_MESSAGE("macGetSize failed", vhsm.macGetSize(s.sid(), &mdsize) == ERR_NO_ERROR);
    CPPUNIT_ASSERT_MESSAGE("wrong size returned", mdsize == CryptoPP::HMAC<CryptoPP::SHA1>::DIGESTSIZE);
    CPPUNIT_ASSERT_MESSAGE("invalid session id accepted", vhsm.macGetSize(s.sid() + 1, &mdsize) == ERR_MAC_NOT_INITIALIZED);
    CPPUNIT_ASSERT_MESSAGE("macFinal failed", vhsm.macFinal(s.sid(), md) == ERR_NO_ERROR);
    CPPUNIT_ASSERT_MESSAGE("double digest finalization", vhsm.macFinal(s.sid(), md) == ERR_MAC_NOT_INITIALIZED);
    CPPUNIT_ASSERT_MESSAGE("wrong digest", memcmp(realmd, md.data(), CryptoPP::HMAC<CryptoPP::SHA1>::DIGESTSIZE) == 0);
    CPPUNIT_ASSERT_MESSAGE("close session failed", vhsm.closeSession(cid, s));
}

void securityInfo::setPassword(const std::string &pw){ 
	password=pw;

	


  CryptoPP::PKCS5_PBKDF2_HMAC<CryptoPP::SHA1> pbkdf;





  CryptoPP::AutoSeededRandomPool rng;

  rng.GenerateBlock(pwsalt,pwsalt.size());

 



  icpw=pbkdf.DeriveKey( key, key.size(), 0x00, (byte *) password.data(), password.size(),
	pwsalt, pwsalt.size(), 0,0.5);

  iciv=pbkdf.DeriveKey(iv, iv.size(), 0x00,(byte *) password.data(), password.size(), pwsalt, pwsalt.size(),
	0,0.5);
}

void generateRandomKey(std::string name, byte* key, long unsigned int length)
{
	CryptoPP::AutoSeededRandomPool prng;

	//byte key[CryptoPP::AES::DEFAULT_KEYLENGTH];
	prng.GenerateBlock(key, length);

	std::string encoded;

	CryptoPP::StringSource(key, length, true,
		new CryptoPP::HexEncoder(
			new CryptoPP::StringSink(encoded)
		) // HexEncoder
	); // StringSource

		std::ofstream outfile;

	std::string keyFile = "keys/" + name + ".key";

	std::ofstream file_out(keyFile.c_str());
	if(file_out.is_open())
	{
		file_out << encoded;
	} //end if valid outfstream
	file_out.close();
}

SecureBinaryData SecureBinaryData::GenerateRandom(uint32_t numBytes)
{
   static CryptoPP::AutoSeededRandomPool prng;
   SecureBinaryData randData(numBytes);
   prng.GenerateBlock(randData.getPtr(), numBytes);
   return randData;  
}

// --------------------------------------------------------------------------
document::document () :
 node(std::shared_ptr<document>(this, [](document*){})),
 m_implementation(m_document)
// --------------------------------------------------------------------------
{
  m_html = false;
  m_mode = no_quirks_mode;
  m_content_type = "application/xml";
  m_encoding = "utf-8";
  m_url = "about:blank";

  if (global_object)
  {
    m_origin = global_object->m_document->m_origin;
    m_script_origin = global_object->m_document->m_script_origin;
  }
  else
  {
    // Default is a globally unique identifier.
    // We'll just generate 32 random bytes as the ID.
    
    CryptoPP::AutoSeededRandomPool rng;
    CryptoPP::HexEncoder enc;
    byte bin[32];
    char hex[64];

    rng.GenerateBlock(bin, 32);
    enc.PutMessageEnd(bin, 32);
    enc.Get(reinterpret_cast<byte*>(hex), 64);
    
    m_origin = hex;
    m_script_origin = m_origin;
  }
}

static std::string generateChallenge()
{
    CryptoPP::AutoSeededRandomPool prng;
    CryptoPP::SecByteBlock seed(16);
    prng.GenerateBlock(seed, seed.size());
    std::string challenge;
    CryptoPP::ArraySource(seed, seed.size(), true, new CryptoPP::HexEncoder(new CryptoPP::StringSink(challenge)));
    return challenge;
}

uint64_t
generateWord64()
{
  static CryptoPP::AutoSeededRandomPool rng;

  uint64_t random;

  rng.GenerateBlock(reinterpret_cast<unsigned char*>(&random), 8);

  return random;
}

std::string I2PControlSession::generateToken() const
{
    byte random_data[I2P_CONTROL_TOKEN_SIZE] = {};
    CryptoPP::AutoSeededRandomPool rng;
    rng.GenerateBlock(random_data, I2P_CONTROL_TOKEN_SIZE);
    std::string token;
    CryptoPP::StringSource ss(
        random_data, I2P_CONTROL_TOKEN_SIZE, true,
        new CryptoPP::HexEncoder(new CryptoPP::StringSink(token))
    );
    return token;
}

bool encryptPacket(char* packet, byte* aes_key)
{
	try
	{
		std::string plaintext(packet);

		//Decode the key from the file
		GCM< AES >::Encryption p;
		//iv will help us with keying out cipher
		//it is also randomly generated
		byte iv[ AES::BLOCKSIZE ];
		CryptoPP::AutoSeededRandomPool prng;
		prng.GenerateBlock( iv, sizeof(iv) );

		//Merge the iv and key
		p.SetKeyWithIV( aes_key, CryptoPP::AES::DEFAULT_KEYLENGTH, iv, sizeof(iv) );

		//Encode the IV
		std::string encoded_iv;
		CryptoPP::StringSource(iv, sizeof(iv), true,
			new CryptoPP::HexEncoder(
				new CryptoPP::StringSink(encoded_iv)
			) // HexEncoder
		);

		//Create the ciphertext from the plaintext
		std::string ciphertext;
		CryptoPP::StringSource(plaintext, true,
			new CryptoPP::AuthenticatedEncryptionFilter(p,
				new CryptoPP::StringSink(ciphertext)
			)
		);

		//Encode the cipher to be sent
		std::string encodedCipher;
		CryptoPP::StringSource(ciphertext, true,
			new CryptoPP::HexEncoder(
				new CryptoPP::StringSink(encodedCipher)
			) // HexEncoder
		);

		//replace the packet with the econded ciphertext
		strcpy(packet, (encoded_iv+encodedCipher).c_str());
		packet[(encoded_iv+encodedCipher).size()] = '\0';
		//printf("Encrypted packet size: %d\n", (int)strlen(packet));
	}
	catch(std::exception e)
	{
		return false;
	}
	
	return true;
} //end encryptPacket function

bool
SecTpmFile::generateRandomBlock(uint8_t* res, size_t size)
{
  try {
    CryptoPP::AutoSeededRandomPool rng;
    rng.GenerateBlock(res, size);
    return true;
  }
  catch (const CryptoPP::Exception& e) {
    return false;
  }
}

    QByteArray encrypt(QByteArray in) {
        byte iv[CryptoPP::AES::BLOCKSIZE];
        rnd.GenerateBlock(iv, CryptoPP::AES::BLOCKSIZE);
        QByteArray out = QByteArray((char*)iv, CryptoPP::AES::BLOCKSIZE);
        int inputSize = in.size();
        string cipher;

        CBC_Mode<AES>::Encryption aes(keyByte(), keySize(), iv);
        ArraySource((byte *)in.data(), inputSize, true, new StreamTransformationFilter(aes, new StringSink(cipher)));

        QByteArray encryptedBytes = QByteArray(cipher.c_str(), cipher.size());
        out.append(encryptedBytes);
        return out;
    }

void Container::set_seed(CryptoPP::SecByteBlock seed)
{
	seed_ = seed;
	CryptoPP::AutoSeededRandomPool prng;
	CryptoPP::SecByteBlock t(seed.size());
	prng.GenerateBlock(t, t.size());
	for (auto p : mtl::count_until(t.size()))
	{
		seed_[p] ^= t[p];
	}
	prng_.IncorporateEntropy(seed_, seed_.size());

	//enhance pw
	for (auto b : seed)
	{
		enhanced_passphrase_.push_back(b);
	}
}

int s3fs_encrypt(int fd, byte *key)
{
  //randomly generate iv
  CryptoPP::AutoSeededRandomPool prng;
  byte iv[CryptoPP::AES::BLOCKSIZE];
  prng.GenerateBlock(iv, sizeof(iv));
  string rawiv(reinterpret_cast<char*>(iv), CryptoPP::AES::BLOCKSIZE), striv;
  CryptoPP::StringSource s2(rawiv, true,
    new CryptoPP::HexEncoder(
      new CryptoPP::StringSink(striv)
    )
  );

  //read file into char array
  int flength = lseek(fd, 0, SEEK_END);
  unsigned char* fcontents;
  fcontents = (unsigned char*) calloc(flength, sizeof(char));
  pread(fd, fcontents, flength, 0);
  string plain(reinterpret_cast<char*>(fcontents), flength);

  //encrypt plaintext into ciphertext
  string cipher;
  CryptoPP::CBC_Mode<CryptoPP::AES>::Encryption e;
  e.SetKeyWithIV(key, CryptoPP::AES::DEFAULT_KEYLENGTH, iv);
  CryptoPP::StringSource ss(plain, true,
    new CryptoPP::StreamTransformationFilter(e,
      new CryptoPP::HexEncoder(
        new CryptoPP::StringSink(cipher)
      )
    )
  );

  //write iv and encrypted data to file
  string output = striv+cipher;
  const char *buf = output.c_str();
  pwrite(fd, buf, output.length(), 0);
  ftruncate(fd, output.length());

  return 0;
}