C++ ConstByteArrayParameter::begin方法代码示例

本文整理汇总了C++中ConstByteArrayParameter::begin方法的典型用法代码示例。如果您正苦于以下问题：C++ ConstByteArrayParameter::begin方法的具体用法？C++ ConstByteArrayParameter::begin怎么用？C++ ConstByteArrayParameter::begin使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类ConstByteArrayParameter的用法示例。

在下文中一共展示了ConstByteArrayParameter::begin方法的6个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: if

const byte * SimpleKeyingInterface::GetIVAndThrowIfInvalid(const NameValuePairs &params, size_t &size)
{
	ConstByteArrayParameter ivWithLength;
	const byte *iv;
	bool found = false;

	try {found = params.GetValue(Name::IV(), ivWithLength);}
	catch (const NameValuePairs::ValueTypeMismatch &) {}

	if (found)
	{
		iv = ivWithLength.begin();
		ThrowIfInvalidIV(iv);
		size = ThrowIfInvalidIVLength((int)ivWithLength.size());
		return iv;
	}
	else if (params.GetValue(Name::IV(), iv))
	{
		ThrowIfInvalidIV(iv);
		size = IVSize();
		return iv;
	}
	else
	{
		ThrowIfResynchronizable();
		size = 0;
		return NULL;
	}
}

开发者ID:13971643458，项目名称:qtum，代码行数:29，代码来源:cryptlib.cpp

示例2: Pad

void OAEP_Base::Pad(RandomNumberGenerator &rng, const byte *input, size_t inputLength, byte *oaepBlock, size_t oaepBlockLen, const NameValuePairs &parameters) const
{
	CRYPTOPP_ASSERT (inputLength <= MaxUnpaddedLength(oaepBlockLen));
	
	using CryptoPP::auto_ptr;
	auto_ptr<HashTransformation> pHash(NewHash());

	// convert from bit length to byte length
	if (oaepBlockLen % 8 != 0)
	{
		oaepBlock[0] = 0;
		oaepBlock++;
	}
	oaepBlockLen /= 8;

	const size_t hLen = pHash->DigestSize();
	const size_t seedLen = hLen, dbLen = oaepBlockLen-seedLen;
	byte *const maskedSeed = oaepBlock;
	byte *const maskedDB = oaepBlock+seedLen;

	ConstByteArrayParameter encodingParameters;
	parameters.GetValue(Name::EncodingParameters(), encodingParameters);

	// DB = pHash || 00 ... || 01 || M
	pHash->CalculateDigest(maskedDB, encodingParameters.begin(), encodingParameters.size());
	memset(maskedDB+hLen, 0, dbLen-hLen-inputLength-1);
	maskedDB[dbLen-inputLength-1] = 0x01;
	memcpy(maskedDB+dbLen-inputLength, input, inputLength);

	auto_ptr<MaskGeneratingFunction> pMGF(NewMGF());
	rng.GenerateBlock(maskedSeed, seedLen);
	pMGF->GenerateAndMask(*pHash, maskedDB, dbLen, maskedSeed, seedLen);
	pMGF->GenerateAndMask(*pHash, maskedSeed, seedLen, maskedDB, dbLen);
}

开发者ID:ChunHungLiu，项目名称:Qt-SESAM，代码行数:34，代码来源:oaep.cpp

示例3: StoreInitialize

void StringStore::StoreInitialize(const NameValuePairs &parameters)
{
	ConstByteArrayParameter array;
	if (!parameters.GetValue(Name::InputBuffer(), array))
		throw InvalidArgument("StringStore: missing InputBuffer argument");
	m_store = array.begin();
	m_length = array.size();
	m_count = 0;
}

开发者ID:prakhs123，项目名称:cryptopp，代码行数:9，代码来源:filters.cpp

示例4: Unpad

DecodingResult OAEP_Base::Unpad(const byte *oaepBlock, size_t oaepBlockLen, byte *output, const NameValuePairs &parameters) const
{
	bool invalid = false;

#if defined(CRYPTOPP_CXX11)
	std::unique_ptr<HashTransformation> pHash(NewHash());
#else
	std::auto_ptr<HashTransformation> pHash(NewHash());
#endif

	// convert from bit length to byte length
	if (oaepBlockLen % 8 != 0)
	{
		invalid = (oaepBlock[0] != 0) || invalid;
		oaepBlock++;
	}
	oaepBlockLen /= 8;

	const size_t hLen = pHash->DigestSize();
	const size_t seedLen = hLen, dbLen = oaepBlockLen-seedLen;

	invalid = (oaepBlockLen < 2*hLen+1) || invalid;

	SecByteBlock t(oaepBlock, oaepBlockLen);
	byte *const maskedSeed = t;
	byte *const maskedDB = t+seedLen;

#if defined(CRYPTOPP_CXX11)
	std::unique_ptr<MaskGeneratingFunction> pMGF(NewMGF());
#else
	std::auto_ptr<MaskGeneratingFunction> pMGF(NewMGF());
#endif

	pMGF->GenerateAndMask(*pHash, maskedSeed, seedLen, maskedDB, dbLen);
	pMGF->GenerateAndMask(*pHash, maskedDB, dbLen, maskedSeed, seedLen);

	ConstByteArrayParameter encodingParameters;
	parameters.GetValue(Name::EncodingParameters(), encodingParameters);

	// DB = pHash' || 00 ... || 01 || M
	byte *M = std::find(maskedDB+hLen, maskedDB+dbLen, 0x01);
	invalid = (M == maskedDB+dbLen) || invalid;
	invalid = (std::find_if(maskedDB+hLen, M, std::bind2nd(std::not_equal_to<byte>(), byte(0))) != M) || invalid;
	invalid = !pHash->VerifyDigest(maskedDB, encodingParameters.begin(), encodingParameters.size()) || invalid;

	if (invalid)
		return DecodingResult();

	M++;
	memcpy(output, M, maskedDB+dbLen-M);
	return DecodingResult(maskedDB+dbLen-M);
}

开发者ID:hovatterz，项目名称:cryptopp，代码行数:52，代码来源:oaep.cpp

示例5: GenerateRandom

void InvertibleESIGNFunction::GenerateRandom(RandomNumberGenerator &rng, const NameValuePairs &param)
{
	int modulusSize = 1023*2;
	param.GetIntValue("ModulusSize", modulusSize) || param.GetIntValue("KeySize", modulusSize);

	if (modulusSize < 24)
		throw InvalidArgument("InvertibleESIGNFunction: specified modulus size is too small");

	if (modulusSize % 3 != 0)
		throw InvalidArgument("InvertibleESIGNFunction: modulus size must be divisible by 3");

	m_e = param.GetValueWithDefault("PublicExponent", Integer(32));

	if (m_e < 8)
		throw InvalidArgument("InvertibleESIGNFunction: public exponents less than 8 may not be secure");

	// VC70 workaround: putting these after primeParam causes overlapped stack allocation
	ConstByteArrayParameter seedParam;
	SecByteBlock seed;

	const Integer minP = Integer(204) << (modulusSize/3-8);
	const Integer maxP = Integer::Power2(modulusSize/3)-1;
	AlgorithmParameters primeParam = MakeParameters("Min", minP)("Max", maxP)("RandomNumberType", Integer::PRIME);

	if (param.GetValue("Seed", seedParam))
	{
		seed.resize(seedParam.size() + 4);
		memcpy(seed + 4, seedParam.begin(), seedParam.size());

		PutWord(false, BIG_ENDIAN_ORDER, seed, (word32)0);
		m_p.GenerateRandom(rng, CombinedNameValuePairs(primeParam, MakeParameters("Seed", ConstByteArrayParameter(seed))));
		PutWord(false, BIG_ENDIAN_ORDER, seed, (word32)1);
		m_q.GenerateRandom(rng, CombinedNameValuePairs(primeParam, MakeParameters("Seed", ConstByteArrayParameter(seed))));
	}
	else
	{
		m_p.GenerateRandom(rng, primeParam);
		m_q.GenerateRandom(rng, primeParam);
	}

	m_n = m_p * m_p * m_q;

	CRYPTOPP_ASSERT(m_n.BitCount() == (unsigned int)modulusSize);
}

开发者ID:Audifire，项目名称:mtasa-blue，代码行数:44，代码来源:esign.cpp

示例6: TestSymmetricCipher

void TestSymmetricCipher(TestData &v, const NameValuePairs &overrideParameters)
{
	std::string name = GetRequiredDatum(v, "Name");
	std::string test = GetRequiredDatum(v, "Test");

	std::string key = GetDecodedDatum(v, "Key");
	std::string plaintext = GetDecodedDatum(v, "Plaintext");

	TestDataNameValuePairs testDataPairs(v);
	CombinedNameValuePairs pairs(overrideParameters, testDataPairs);

	if (test == "Encrypt" || test == "EncryptXorDigest" || test == "Resync" || test == "EncryptionMCT" || test == "DecryptionMCT")
	{
		static member_ptr<SymmetricCipher> encryptor, decryptor;
		static std::string lastName;

		if (name != lastName)
		{
			encryptor.reset(ObjectFactoryRegistry<SymmetricCipher, ENCRYPTION>::Registry().CreateObject(name.c_str()));
			decryptor.reset(ObjectFactoryRegistry<SymmetricCipher, DECRYPTION>::Registry().CreateObject(name.c_str()));
			lastName = name;
		}

		ConstByteArrayParameter iv;
		if (pairs.GetValue(Name::IV(), iv) && iv.size() != encryptor->IVSize())
			SignalTestFailure();

		if (test == "Resync")
		{
			encryptor->Resynchronize(iv.begin(), (int)iv.size());
			decryptor->Resynchronize(iv.begin(), (int)iv.size());
		}
		else
		{
			encryptor->SetKey((const byte *)key.data(), key.size(), pairs);
			decryptor->SetKey((const byte *)key.data(), key.size(), pairs);
		}

		int seek = pairs.GetIntValueWithDefault("Seek", 0);
		if (seek)
		{
			encryptor->Seek(seek);
			decryptor->Seek(seek);
		}

		std::string encrypted, xorDigest, ciphertext, ciphertextXorDigest;
		if (test == "EncryptionMCT" || test == "DecryptionMCT")
		{
			SymmetricCipher *cipher = encryptor.get();
			SecByteBlock buf((byte *)plaintext.data(), plaintext.size()), keybuf((byte *)key.data(), key.size());

			if (test == "DecryptionMCT")
			{
				cipher = decryptor.get();
				ciphertext = GetDecodedDatum(v, "Ciphertext");
				buf.Assign((byte *)ciphertext.data(), ciphertext.size());
			}

			for (int i=0; i<400; i++)
			{
				encrypted.reserve(10000 * plaintext.size());
				for (int j=0; j<10000; j++)
				{
					cipher->ProcessString(buf.begin(), buf.size());
					encrypted.append((char *)buf.begin(), buf.size());
				}

				encrypted.erase(0, encrypted.size() - keybuf.size());
				xorbuf(keybuf.begin(), (const byte *)encrypted.data(), keybuf.size());
				cipher->SetKey(keybuf, keybuf.size());
			}
			encrypted.assign((char *)buf.begin(), buf.size());
			ciphertext = GetDecodedDatum(v, test == "EncryptionMCT" ? "Ciphertext" : "Plaintext");
			if (encrypted != ciphertext)
			{
				std::cout << "incorrectly encrypted: ";
				StringSource xx(encrypted, false, new HexEncoder(new FileSink(std::cout)));
				xx.Pump(256); xx.Flush(false);
				std::cout << "\n";
				SignalTestFailure();
			}
			return;
		}

		StreamTransformationFilter encFilter(*encryptor, new StringSink(encrypted), StreamTransformationFilter::NO_PADDING);
		RandomizedTransfer(StringStore(plaintext).Ref(), encFilter, true);
		encFilter.MessageEnd();
		/*{
			std::string z;
			encryptor->Seek(seek);
			StringSource ss(plaintext, false, new StreamTransformationFilter(*encryptor, new StringSink(z), StreamTransformationFilter::NO_PADDING));
			while (ss.Pump(64)) {}
			ss.PumpAll();
			for (int i=0; i<z.length(); i++)
				assert(encrypted[i] == z[i]);
		}*/
		if (test != "EncryptXorDigest")
			ciphertext = GetDecodedDatum(v, "Ciphertext");
		else
		{
//.........这里部分代码省略.........

开发者ID:Kthulhu，项目名称:cryptopp，代码行数:101，代码来源:datatest.cpp

注：本文中的ConstByteArrayParameter::begin方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。