You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
835 lines
24 KiB
835 lines
24 KiB
![]()
4 years ago
|
// cryptlib.cpp - written and placed in the public domain by Wei Dai
|
||
|
|
||
|
#include "pch.h"
|
||
|
|
||
|
#ifndef CRYPTOPP_IMPORTS
|
||
|
|
||
|
#include "cryptlib.h"
|
||
|
#include "misc.h"
|
||
|
#include "filters.h"
|
||
|
#include "algparam.h"
|
||
|
#include "fips140.h"
|
||
|
#include "argnames.h"
|
||
|
#include "fltrimpl.h"
|
||
|
#include "trdlocal.h"
|
||
|
#include "osrng.h"
|
||
|
|
||
|
#include <memory>
|
||
|
|
||
|
NAMESPACE_BEGIN(CryptoPP)
|
||
|
|
||
|
CRYPTOPP_COMPILE_ASSERT(sizeof(byte) == 1);
|
||
|
CRYPTOPP_COMPILE_ASSERT(sizeof(word16) == 2);
|
||
|
CRYPTOPP_COMPILE_ASSERT(sizeof(word32) == 4);
|
||
|
CRYPTOPP_COMPILE_ASSERT(sizeof(word64) == 8);
|
||
|
#ifdef CRYPTOPP_NATIVE_DWORD_AVAILABLE
|
||
|
CRYPTOPP_COMPILE_ASSERT(sizeof(dword) == 2*sizeof(word));
|
||
|
#endif
|
||
|
|
||
|
// VALVE, changed DEFAULT_CHANNEL to a basic type from std::string
|
||
|
const char * DEFAULT_CHANNEL = "";
|
||
|
const std::string AAD_CHANNEL = "AAD";
|
||
|
const std::string &BufferedTransformation::NULL_CHANNEL = DEFAULT_CHANNEL;
|
||
|
|
||
|
class NullNameValuePairs : public NameValuePairs
|
||
|
{
|
||
|
public:
|
||
|
NullNameValuePairs() {}
|
||
|
bool GetVoidValue(const char *name, const std::type_info &valueType, void *pValue) const {return false;}
|
||
|
};
|
||
|
|
||
|
// VALVE: Our debug allocator doesn't much care for global objects like this, it registers them
|
||
|
// as a memory leak during validation. So make them const.
|
||
|
//simple_ptr<NullNameValuePairs> s_pNullNameValuePairs(new NullNameValuePairs);
|
||
|
//const NameValuePairs &g_nullNameValuePairs = *s_pNullNameValuePairs.m_p;
|
||
|
const NullNameValuePairs s_NullNameValuePairs;
|
||
|
const NameValuePairs &g_nullNameValuePairs = s_NullNameValuePairs;
|
||
|
|
||
|
BufferedTransformation & TheBitBucket()
|
||
|
{
|
||
|
static BitBucket bitBucket;
|
||
|
return bitBucket;
|
||
|
}
|
||
|
|
||
|
Algorithm::Algorithm(bool checkSelfTestStatus)
|
||
|
{
|
||
|
if (checkSelfTestStatus && FIPS_140_2_ComplianceEnabled())
|
||
|
{
|
||
|
if (GetPowerUpSelfTestStatus() == POWER_UP_SELF_TEST_NOT_DONE && !PowerUpSelfTestInProgressOnThisThread())
|
||
|
throw SelfTestFailure("Cryptographic algorithms are disabled before the power-up self tests are performed.");
|
||
|
|
||
|
if (GetPowerUpSelfTestStatus() == POWER_UP_SELF_TEST_FAILED)
|
||
|
throw SelfTestFailure("Cryptographic algorithms are disabled after a power-up self test failed.");
|
||
|
}
|
||
|
}
|
||
|
|
||
|
void SimpleKeyingInterface::SetKey(const byte *key, size_t length, const NameValuePairs ¶ms)
|
||
|
{
|
||
|
this->ThrowIfInvalidKeyLength(length);
|
||
|
this->UncheckedSetKey(key, (unsigned int)length, params);
|
||
|
}
|
||
|
|
||
|
void SimpleKeyingInterface::SetKeyWithRounds(const byte *key, size_t length, int rounds)
|
||
|
{
|
||
|
SetKey(key, length, MakeParameters(Name::Rounds(), rounds));
|
||
|
}
|
||
|
|
||
|
void SimpleKeyingInterface::SetKeyWithIV(const byte *key, size_t length, const byte *iv, size_t ivLength)
|
||
|
{
|
||
|
SetKey(key, length, MakeParameters(Name::IV(), ConstByteArrayParameter(iv, ivLength)));
|
||
|
}
|
||
|
|
||
|
void SimpleKeyingInterface::ThrowIfInvalidKeyLength(size_t length)
|
||
|
{
|
||
|
if (!IsValidKeyLength(length))
|
||
|
throw InvalidKeyLength(GetAlgorithm().AlgorithmName(), length);
|
||
|
}
|
||
|
|
||
|
void SimpleKeyingInterface::ThrowIfResynchronizable()
|
||
|
{
|
||
|
if (IsResynchronizable())
|
||
|
throw InvalidArgument(GetAlgorithm().AlgorithmName() + ": this object requires an IV");
|
||
|
}
|
||
|
|
||
|
void SimpleKeyingInterface::ThrowIfInvalidIV(const byte *iv)
|
||
|
{
|
||
|
if (!iv && IVRequirement() == UNPREDICTABLE_RANDOM_IV)
|
||
|
throw InvalidArgument(GetAlgorithm().AlgorithmName() + ": this object cannot use a null IV");
|
||
|
}
|
||
|
|
||
|
size_t SimpleKeyingInterface::ThrowIfInvalidIVLength(int size)
|
||
|
{
|
||
|
if (size < 0)
|
||
|
return IVSize();
|
||
|
else if ((size_t)size < MinIVLength())
|
||
|
throw InvalidArgument(GetAlgorithm().AlgorithmName() + ": IV length " + IntToString(size) + " is less than the minimum of " + IntToString(MinIVLength()));
|
||
|
else if ((size_t)size > MaxIVLength())
|
||
|
throw InvalidArgument(GetAlgorithm().AlgorithmName() + ": IV length " + IntToString(size) + " exceeds the maximum of " + IntToString(MaxIVLength()));
|
||
|
else
|
||
|
return size;
|
||
|
}
|
||
|
|
||
|
const byte * SimpleKeyingInterface::GetIVAndThrowIfInvalid(const NameValuePairs ¶ms, 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;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
void SimpleKeyingInterface::GetNextIV(RandomNumberGenerator &rng, byte *IV)
|
||
|
{
|
||
|
rng.GenerateBlock(IV, IVSize());
|
||
|
}
|
||
|
|
||
|
size_t BlockTransformation::AdvancedProcessBlocks(const byte *inBlocks, const byte *xorBlocks, byte *outBlocks, size_t length, word32 flags) const
|
||
|
{
|
||
|
size_t blockSize = BlockSize();
|
||
|
size_t inIncrement = (flags & (BT_InBlockIsCounter|BT_DontIncrementInOutPointers)) ? 0 : blockSize;
|
||
|
size_t xorIncrement = xorBlocks ? blockSize : 0;
|
||
|
size_t outIncrement = (flags & BT_DontIncrementInOutPointers) ? 0 : blockSize;
|
||
|
|
||
|
if (flags & BT_ReverseDirection)
|
||
|
{
|
||
|
assert(length % blockSize == 0);
|
||
|
inBlocks += length - blockSize;
|
||
|
xorBlocks += length - blockSize;
|
||
|
outBlocks += length - blockSize;
|
||
|
inIncrement = 0-inIncrement;
|
||
|
xorIncrement = 0-xorIncrement;
|
||
|
outIncrement = 0-outIncrement;
|
||
|
}
|
||
|
|
||
|
while (length >= blockSize)
|
||
|
{
|
||
|
if (flags & BT_XorInput)
|
||
|
{
|
||
|
xorbuf(outBlocks, xorBlocks, inBlocks, blockSize);
|
||
|
ProcessBlock(outBlocks);
|
||
|
}
|
||
|
else
|
||
|
ProcessAndXorBlock(inBlocks, xorBlocks, outBlocks);
|
||
|
if (flags & BT_InBlockIsCounter)
|
||
|
const_cast<byte *>(inBlocks)[blockSize-1]++;
|
||
|
inBlocks += inIncrement;
|
||
|
outBlocks += outIncrement;
|
||
|
xorBlocks += xorIncrement;
|
||
|
length -= blockSize;
|
||
|
}
|
||
|
|
||
|
return length;
|
||
|
}
|
||
|
|
||
|
unsigned int BlockTransformation::OptimalDataAlignment() const
|
||
|
{
|
||
|
return GetAlignmentOf<word32>();
|
||
|
}
|
||
|
|
||
|
unsigned int StreamTransformation::OptimalDataAlignment() const
|
||
|
{
|
||
|
return GetAlignmentOf<word32>();
|
||
|
}
|
||
|
|
||
|
unsigned int HashTransformation::OptimalDataAlignment() const
|
||
|
{
|
||
|
return GetAlignmentOf<word32>();
|
||
|
}
|
||
|
|
||
|
void StreamTransformation::ProcessLastBlock(byte *outString, const byte *inString, size_t length)
|
||
|
{
|
||
|
assert(MinLastBlockSize() == 0); // this function should be overriden otherwise
|
||
|
|
||
|
if (length == MandatoryBlockSize())
|
||
|
ProcessData(outString, inString, length);
|
||
|
else if (length != 0)
|
||
|
throw NotImplemented(AlgorithmName() + ": this object does't support a special last block");
|
||
|
}
|
||
|
|
||
|
void AuthenticatedSymmetricCipher::SpecifyDataLengths(lword headerLength, lword messageLength, lword footerLength)
|
||
|
{
|
||
|
if (headerLength > MaxHeaderLength())
|
||
|
throw InvalidArgument(GetAlgorithm().AlgorithmName() + ": header length " + IntToString(headerLength) + " exceeds the maximum of " + IntToString(MaxHeaderLength()));
|
||
|
|
||
|
if (messageLength > MaxMessageLength())
|
||
|
throw InvalidArgument(GetAlgorithm().AlgorithmName() + ": message length " + IntToString(messageLength) + " exceeds the maximum of " + IntToString(MaxMessageLength()));
|
||
|
|
||
|
if (footerLength > MaxFooterLength())
|
||
|
throw InvalidArgument(GetAlgorithm().AlgorithmName() + ": footer length " + IntToString(footerLength) + " exceeds the maximum of " + IntToString(MaxFooterLength()));
|
||
|
|
||
|
UncheckedSpecifyDataLengths(headerLength, messageLength, footerLength);
|
||
|
}
|
||
|
|
||
|
void AuthenticatedSymmetricCipher::EncryptAndAuthenticate(byte *ciphertext, byte *mac, size_t macSize, const byte *iv, int ivLength, const byte *header, size_t headerLength, const byte *message, size_t messageLength)
|
||
|
{
|
||
|
Resynchronize(iv, ivLength);
|
||
|
SpecifyDataLengths(headerLength, messageLength);
|
||
|
Update(header, headerLength);
|
||
|
ProcessString(ciphertext, message, messageLength);
|
||
|
TruncatedFinal(mac, macSize);
|
||
|
}
|
||
|
|
||
|
bool AuthenticatedSymmetricCipher::DecryptAndVerify(byte *message, const byte *mac, size_t macLength, const byte *iv, int ivLength, const byte *header, size_t headerLength, const byte *ciphertext, size_t ciphertextLength)
|
||
|
{
|
||
|
Resynchronize(iv, ivLength);
|
||
|
SpecifyDataLengths(headerLength, ciphertextLength);
|
||
|
Update(header, headerLength);
|
||
|
ProcessString(message, ciphertext, ciphertextLength);
|
||
|
return TruncatedVerify(mac, macLength);
|
||
|
}
|
||
|
|
||
|
unsigned int RandomNumberGenerator::GenerateBit()
|
||
|
{
|
||
|
return GenerateByte() & 1;
|
||
|
}
|
||
|
|
||
|
byte RandomNumberGenerator::GenerateByte()
|
||
|
{
|
||
|
byte b;
|
||
|
GenerateBlock(&b, 1);
|
||
|
return b;
|
||
|
}
|
||
|
|
||
|
word32 RandomNumberGenerator::GenerateWord32(word32 min, word32 max)
|
||
|
{
|
||
|
word32 range = max-min;
|
||
|
const int maxBits = BitPrecision(range);
|
||
|
|
||
|
word32 value;
|
||
|
|
||
|
do
|
||
|
{
|
||
|
GenerateBlock((byte *)&value, sizeof(value));
|
||
|
value = Crop(value, maxBits);
|
||
|
} while (value > range);
|
||
|
|
||
|
return value+min;
|
||
|
}
|
||
|
|
||
|
void RandomNumberGenerator::GenerateBlock(byte *output, size_t size)
|
||
|
{
|
||
|
ArraySink s(output, size);
|
||
|
GenerateIntoBufferedTransformation(s, DEFAULT_CHANNEL, size);
|
||
|
}
|
||
|
|
||
|
void RandomNumberGenerator::DiscardBytes(size_t n)
|
||
|
{
|
||
|
GenerateIntoBufferedTransformation(TheBitBucket(), DEFAULT_CHANNEL, n);
|
||
|
}
|
||
|
|
||
|
void RandomNumberGenerator::GenerateIntoBufferedTransformation(BufferedTransformation &target, const std::string &channel, lword length)
|
||
|
{
|
||
|
FixedSizeSecBlock<byte, 256> buffer;
|
||
|
while (length)
|
||
|
{
|
||
|
size_t len = UnsignedMin(buffer.size(), length);
|
||
|
GenerateBlock(buffer, len);
|
||
|
target.ChannelPut(channel, buffer, len);
|
||
|
length -= len;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
//! see NullRNG()
|
||
|
class ClassNullRNG : public RandomNumberGenerator
|
||
|
{
|
||
|
public:
|
||
|
std::string AlgorithmName() const {return "NullRNG";}
|
||
|
void GenerateBlock(byte *output, size_t size) {throw NotImplemented("NullRNG: NullRNG should only be passed to functions that don't need to generate random bytes");}
|
||
|
};
|
||
|
|
||
|
RandomNumberGenerator & NullRNG()
|
||
|
{
|
||
|
static ClassNullRNG s_nullRNG;
|
||
|
return s_nullRNG;
|
||
|
}
|
||
|
|
||
|
bool HashTransformation::TruncatedVerify(const byte *digestIn, size_t digestLength)
|
||
|
{
|
||
|
ThrowIfInvalidTruncatedSize(digestLength);
|
||
|
SecByteBlock digest(digestLength);
|
||
|
TruncatedFinal(digest, digestLength);
|
||
|
return VerifyBufsEqual(digest, digestIn, digestLength);
|
||
|
}
|
||
|
|
||
|
void HashTransformation::ThrowIfInvalidTruncatedSize(size_t size) const
|
||
|
{
|
||
|
if (size > DigestSize())
|
||
|
throw InvalidArgument("HashTransformation: can't truncate a " + IntToString(DigestSize()) + " byte digest to " + IntToString(size) + " bytes");
|
||
|
}
|
||
|
|
||
|
unsigned int BufferedTransformation::GetMaxWaitObjectCount() const
|
||
|
{
|
||
|
const BufferedTransformation *t = AttachedTransformation();
|
||
|
return t ? t->GetMaxWaitObjectCount() : 0;
|
||
|
}
|
||
|
|
||
|
void BufferedTransformation::GetWaitObjects(WaitObjectContainer &container, CallStack const& callStack)
|
||
|
{
|
||
|
BufferedTransformation *t = AttachedTransformation();
|
||
|
if (t)
|
||
|
t->GetWaitObjects(container, callStack); // reduce clutter by not adding to stack here
|
||
|
}
|
||
|
|
||
|
void BufferedTransformation::Initialize(const NameValuePairs ¶meters, int propagation)
|
||
|
{
|
||
|
assert(!AttachedTransformation());
|
||
|
IsolatedInitialize(parameters);
|
||
|
}
|
||
|
|
||
|
bool BufferedTransformation::Flush(bool hardFlush, int propagation, bool blocking)
|
||
|
{
|
||
|
assert(!AttachedTransformation());
|
||
|
return IsolatedFlush(hardFlush, blocking);
|
||
|
}
|
||
|
|
||
|
bool BufferedTransformation::MessageSeriesEnd(int propagation, bool blocking)
|
||
|
{
|
||
|
assert(!AttachedTransformation());
|
||
|
return IsolatedMessageSeriesEnd(blocking);
|
||
|
}
|
||
|
|
||
|
byte * BufferedTransformation::ChannelCreatePutSpace(const std::string &channel, size_t &size)
|
||
|
{
|
||
|
if (channel.empty())
|
||
|
return CreatePutSpace(size);
|
||
|
else
|
||
|
throw NoChannelSupport(AlgorithmName());
|
||
|
}
|
||
|
|
||
|
size_t BufferedTransformation::ChannelPut2(const std::string &channel, const byte *begin, size_t length, int messageEnd, bool blocking)
|
||
|
{
|
||
|
if (channel.empty())
|
||
|
return Put2(begin, length, messageEnd, blocking);
|
||
|
else
|
||
|
throw NoChannelSupport(AlgorithmName());
|
||
|
}
|
||
|
|
||
|
size_t BufferedTransformation::ChannelPutModifiable2(const std::string &channel, byte *begin, size_t length, int messageEnd, bool blocking)
|
||
|
{
|
||
|
if (channel.empty())
|
||
|
return PutModifiable2(begin, length, messageEnd, blocking);
|
||
|
else
|
||
|
return ChannelPut2(channel, begin, length, messageEnd, blocking);
|
||
|
}
|
||
|
|
||
|
bool BufferedTransformation::ChannelFlush(const std::string &channel, bool completeFlush, int propagation, bool blocking)
|
||
|
{
|
||
|
if (channel.empty())
|
||
|
return Flush(completeFlush, propagation, blocking);
|
||
|
else
|
||
|
throw NoChannelSupport(AlgorithmName());
|
||
|
}
|
||
|
|
||
|
bool BufferedTransformation::ChannelMessageSeriesEnd(const std::string &channel, int propagation, bool blocking)
|
||
|
{
|
||
|
if (channel.empty())
|
||
|
return MessageSeriesEnd(propagation, blocking);
|
||
|
else
|
||
|
throw NoChannelSupport(AlgorithmName());
|
||
|
}
|
||
|
|
||
|
lword BufferedTransformation::MaxRetrievable() const
|
||
|
{
|
||
|
if (AttachedTransformation())
|
||
|
return AttachedTransformation()->MaxRetrievable();
|
||
|
else
|
||
|
return CopyTo(TheBitBucket());
|
||
|
}
|
||
|
|
||
|
bool BufferedTransformation::AnyRetrievable() const
|
||
|
{
|
||
|
if (AttachedTransformation())
|
||
|
return AttachedTransformation()->AnyRetrievable();
|
||
|
else
|
||
|
{
|
||
|
byte b;
|
||
|
return Peek(b) != 0;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
size_t BufferedTransformation::Get(byte &outByte)
|
||
|
{
|
||
|
if (AttachedTransformation())
|
||
|
return AttachedTransformation()->Get(outByte);
|
||
|
else
|
||
|
return Get(&outByte, 1);
|
||
|
}
|
||
|
|
||
|
size_t BufferedTransformation::Get(byte *outString, size_t getMax)
|
||
|
{
|
||
|
if (AttachedTransformation())
|
||
|
return AttachedTransformation()->Get(outString, getMax);
|
||
|
else
|
||
|
{
|
||
|
ArraySink arraySink(outString, getMax);
|
||
|
return (size_t)TransferTo(arraySink, getMax);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
size_t BufferedTransformation::Peek(byte &outByte) const
|
||
|
{
|
||
|
if (AttachedTransformation())
|
||
|
return AttachedTransformation()->Peek(outByte);
|
||
|
else
|
||
|
return Peek(&outByte, 1);
|
||
|
}
|
||
|
|
||
|
size_t BufferedTransformation::Peek(byte *outString, size_t peekMax) const
|
||
|
{
|
||
|
if (AttachedTransformation())
|
||
|
return AttachedTransformation()->Peek(outString, peekMax);
|
||
|
else
|
||
|
{
|
||
|
ArraySink arraySink(outString, peekMax);
|
||
|
return (size_t)CopyTo(arraySink, peekMax);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
lword BufferedTransformation::Skip(lword skipMax)
|
||
|
{
|
||
|
if (AttachedTransformation())
|
||
|
return AttachedTransformation()->Skip(skipMax);
|
||
|
else
|
||
|
return TransferTo(TheBitBucket(), skipMax);
|
||
|
}
|
||
|
|
||
|
lword BufferedTransformation::TotalBytesRetrievable() const
|
||
|
{
|
||
|
if (AttachedTransformation())
|
||
|
return AttachedTransformation()->TotalBytesRetrievable();
|
||
|
else
|
||
|
return MaxRetrievable();
|
||
|
}
|
||
|
|
||
|
unsigned int BufferedTransformation::NumberOfMessages() const
|
||
|
{
|
||
|
if (AttachedTransformation())
|
||
|
return AttachedTransformation()->NumberOfMessages();
|
||
|
else
|
||
|
return CopyMessagesTo(TheBitBucket());
|
||
|
}
|
||
|
|
||
|
bool BufferedTransformation::AnyMessages() const
|
||
|
{
|
||
|
if (AttachedTransformation())
|
||
|
return AttachedTransformation()->AnyMessages();
|
||
|
else
|
||
|
return NumberOfMessages() != 0;
|
||
|
}
|
||
|
|
||
|
bool BufferedTransformation::GetNextMessage()
|
||
|
{
|
||
|
if (AttachedTransformation())
|
||
|
return AttachedTransformation()->GetNextMessage();
|
||
|
else
|
||
|
{
|
||
|
assert(!AnyMessages());
|
||
|
return false;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
unsigned int BufferedTransformation::SkipMessages(unsigned int count)
|
||
|
{
|
||
|
if (AttachedTransformation())
|
||
|
return AttachedTransformation()->SkipMessages(count);
|
||
|
else
|
||
|
return TransferMessagesTo(TheBitBucket(), count);
|
||
|
}
|
||
|
|
||
|
size_t BufferedTransformation::TransferMessagesTo2(BufferedTransformation &target, unsigned int &messageCount, const std::string &channel, bool blocking)
|
||
|
{
|
||
|
if (AttachedTransformation())
|
||
|
return AttachedTransformation()->TransferMessagesTo2(target, messageCount, channel, blocking);
|
||
|
else
|
||
|
{
|
||
|
unsigned int maxMessages = messageCount;
|
||
|
for (messageCount=0; messageCount < maxMessages && AnyMessages(); messageCount++)
|
||
|
{
|
||
|
size_t blockedBytes;
|
||
|
lword transferredBytes;
|
||
|
|
||
|
while (AnyRetrievable())
|
||
|
{
|
||
|
transferredBytes = LWORD_MAX;
|
||
|
blockedBytes = TransferTo2(target, transferredBytes, channel, blocking);
|
||
|
if (blockedBytes > 0)
|
||
|
return blockedBytes;
|
||
|
}
|
||
|
|
||
|
if (target.ChannelMessageEnd(channel, GetAutoSignalPropagation(), blocking))
|
||
|
return 1;
|
||
|
|
||
|
bool result = GetNextMessage();
|
||
|
assert(result);
|
||
|
}
|
||
|
return 0;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
unsigned int BufferedTransformation::CopyMessagesTo(BufferedTransformation &target, unsigned int count, const std::string &channel) const
|
||
|
{
|
||
|
if (AttachedTransformation())
|
||
|
return AttachedTransformation()->CopyMessagesTo(target, count, channel);
|
||
|
else
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
void BufferedTransformation::SkipAll()
|
||
|
{
|
||
|
if (AttachedTransformation())
|
||
|
AttachedTransformation()->SkipAll();
|
||
|
else
|
||
|
{
|
||
|
while (SkipMessages()) {}
|
||
|
while (Skip()) {}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
size_t BufferedTransformation::TransferAllTo2(BufferedTransformation &target, const std::string &channel, bool blocking)
|
||
|
{
|
||
|
if (AttachedTransformation())
|
||
|
return AttachedTransformation()->TransferAllTo2(target, channel, blocking);
|
||
|
else
|
||
|
{
|
||
|
assert(!NumberOfMessageSeries());
|
||
|
|
||
|
unsigned int messageCount;
|
||
|
do
|
||
|
{
|
||
|
messageCount = UINT_MAX;
|
||
|
size_t blockedBytes = TransferMessagesTo2(target, messageCount, channel, blocking);
|
||
|
if (blockedBytes)
|
||
|
return blockedBytes;
|
||
|
}
|
||
|
while (messageCount != 0);
|
||
|
|
||
|
lword byteCount;
|
||
|
do
|
||
|
{
|
||
|
byteCount = ULONG_MAX;
|
||
|
size_t blockedBytes = TransferTo2(target, byteCount, channel, blocking);
|
||
|
if (blockedBytes)
|
||
|
return blockedBytes;
|
||
|
}
|
||
|
while (byteCount != 0);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
void BufferedTransformation::CopyAllTo(BufferedTransformation &target, const std::string &channel) const
|
||
|
{
|
||
|
if (AttachedTransformation())
|
||
|
AttachedTransformation()->CopyAllTo(target, channel);
|
||
|
else
|
||
|
{
|
||
|
assert(!NumberOfMessageSeries());
|
||
|
while (CopyMessagesTo(target, UINT_MAX, channel)) {}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
void BufferedTransformation::SetRetrievalChannel(const std::string &channel)
|
||
|
{
|
||
|
if (AttachedTransformation())
|
||
|
AttachedTransformation()->SetRetrievalChannel(channel);
|
||
|
}
|
||
|
|
||
|
size_t BufferedTransformation::ChannelPutWord16(const std::string &channel, word16 value, ByteOrder order, bool blocking)
|
||
|
{
|
||
|
PutWord(false, order, m_buf, value);
|
||
|
return ChannelPut(channel, m_buf, 2, blocking);
|
||
|
}
|
||
|
|
||
|
size_t BufferedTransformation::ChannelPutWord32(const std::string &channel, word32 value, ByteOrder order, bool blocking)
|
||
|
{
|
||
|
PutWord(false, order, m_buf, value);
|
||
|
return ChannelPut(channel, m_buf, 4, blocking);
|
||
|
}
|
||
|
|
||
|
size_t BufferedTransformation::PutWord16(word16 value, ByteOrder order, bool blocking)
|
||
|
{
|
||
|
return ChannelPutWord16(DEFAULT_CHANNEL, value, order, blocking);
|
||
|
}
|
||
|
|
||
|
size_t BufferedTransformation::PutWord32(word32 value, ByteOrder order, bool blocking)
|
||
|
{
|
||
|
return ChannelPutWord32(DEFAULT_CHANNEL, value, order, blocking);
|
||
|
}
|
||
|
|
||
|
size_t BufferedTransformation::PeekWord16(word16 &value, ByteOrder order) const
|
||
|
{
|
||
|
byte buf[2] = {0, 0};
|
||
|
size_t len = Peek(buf, 2);
|
||
|
|
||
|
if (order)
|
||
|
value = (buf[0] << 8) | buf[1];
|
||
|
else
|
||
|
value = (buf[1] << 8) | buf[0];
|
||
|
|
||
|
return len;
|
||
|
}
|
||
|
|
||
|
size_t BufferedTransformation::PeekWord32(word32 &value, ByteOrder order) const
|
||
|
{
|
||
|
byte buf[4] = {0, 0, 0, 0};
|
||
|
size_t len = Peek(buf, 4);
|
||
|
|
||
|
if (order)
|
||
|
value = (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf [3];
|
||
|
else
|
||
|
value = (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf [0];
|
||
|
|
||
|
return len;
|
||
|
}
|
||
|
|
||
|
size_t BufferedTransformation::GetWord16(word16 &value, ByteOrder order)
|
||
|
{
|
||
|
return (size_t)Skip(PeekWord16(value, order));
|
||
|
}
|
||
|
|
||
|
size_t BufferedTransformation::GetWord32(word32 &value, ByteOrder order)
|
||
|
{
|
||
|
return (size_t)Skip(PeekWord32(value, order));
|
||
|
}
|
||
|
|
||
|
void BufferedTransformation::Attach(BufferedTransformation *newOut)
|
||
|
{
|
||
|
if (AttachedTransformation() && AttachedTransformation()->Attachable())
|
||
|
AttachedTransformation()->Attach(newOut);
|
||
|
else
|
||
|
Detach(newOut);
|
||
|
}
|
||
|
|
||
|
void GeneratableCryptoMaterial::GenerateRandomWithKeySize(RandomNumberGenerator &rng, unsigned int keySize)
|
||
|
{
|
||
|
GenerateRandom(rng, MakeParameters("KeySize", (int)keySize));
|
||
|
}
|
||
|
|
||
|
class PK_DefaultEncryptionFilter : public Unflushable<Filter>
|
||
|
{
|
||
|
public:
|
||
|
PK_DefaultEncryptionFilter(RandomNumberGenerator &rng, const PK_Encryptor &encryptor, BufferedTransformation *attachment, const NameValuePairs ¶meters)
|
||
|
: m_rng(rng), m_encryptor(encryptor), m_parameters(parameters)
|
||
|
{
|
||
|
Detach(attachment);
|
||
|
}
|
||
|
|
||
|
size_t Put2(const byte *inString, size_t length, int messageEnd, bool blocking)
|
||
|
{
|
||
|
FILTER_BEGIN;
|
||
|
m_plaintextQueue.Put(inString, length);
|
||
|
|
||
|
if (messageEnd)
|
||
|
{
|
||
|
{
|
||
|
size_t plaintextLength;
|
||
|
if (!SafeConvert(m_plaintextQueue.CurrentSize(), plaintextLength))
|
||
|
throw InvalidArgument("PK_DefaultEncryptionFilter: plaintext too long");
|
||
|
size_t ciphertextLength = m_encryptor.CiphertextLength(plaintextLength);
|
||
|
|
||
|
SecByteBlock plaintext(plaintextLength);
|
||
|
m_plaintextQueue.Get(plaintext, plaintextLength);
|
||
|
m_ciphertext.resize(ciphertextLength);
|
||
|
m_encryptor.Encrypt(m_rng, plaintext, plaintextLength, m_ciphertext, m_parameters);
|
||
|
}
|
||
|
|
||
|
FILTER_OUTPUT(1, m_ciphertext, m_ciphertext.size(), messageEnd);
|
||
|
}
|
||
|
FILTER_END_NO_MESSAGE_END;
|
||
|
}
|
||
|
|
||
|
RandomNumberGenerator &m_rng;
|
||
|
const PK_Encryptor &m_encryptor;
|
||
|
const NameValuePairs &m_parameters;
|
||
|
ByteQueue m_plaintextQueue;
|
||
|
SecByteBlock m_ciphertext;
|
||
|
};
|
||
|
|
||
|
BufferedTransformation * PK_Encryptor::CreateEncryptionFilter(RandomNumberGenerator &rng, BufferedTransformation *attachment, const NameValuePairs ¶meters) const
|
||
|
{
|
||
|
return new PK_DefaultEncryptionFilter(rng, *this, attachment, parameters);
|
||
|
}
|
||
|
|
||
|
class PK_DefaultDecryptionFilter : public Unflushable<Filter>
|
||
|
{
|
||
|
public:
|
||
|
PK_DefaultDecryptionFilter(RandomNumberGenerator &rng, const PK_Decryptor &decryptor, BufferedTransformation *attachment, const NameValuePairs ¶meters)
|
||
|
: m_rng(rng), m_decryptor(decryptor), m_parameters(parameters)
|
||
|
{
|
||
|
Detach(attachment);
|
||
|
}
|
||
|
|
||
|
size_t Put2(const byte *inString, size_t length, int messageEnd, bool blocking)
|
||
|
{
|
||
|
FILTER_BEGIN;
|
||
|
m_ciphertextQueue.Put(inString, length);
|
||
|
|
||
|
if (messageEnd)
|
||
|
{
|
||
|
{
|
||
|
size_t ciphertextLength;
|
||
|
if (!SafeConvert(m_ciphertextQueue.CurrentSize(), ciphertextLength))
|
||
|
throw InvalidArgument("PK_DefaultDecryptionFilter: ciphertext too long");
|
||
|
size_t maxPlaintextLength = m_decryptor.MaxPlaintextLength(ciphertextLength);
|
||
|
|
||
|
SecByteBlock ciphertext(ciphertextLength);
|
||
|
m_ciphertextQueue.Get(ciphertext, ciphertextLength);
|
||
|
m_plaintext.resize(maxPlaintextLength);
|
||
|
m_result = m_decryptor.Decrypt(m_rng, ciphertext, ciphertextLength, m_plaintext, m_parameters);
|
||
|
if (!m_result.isValidCoding)
|
||
|
throw InvalidCiphertext(m_decryptor.AlgorithmName() + ": invalid ciphertext");
|
||
|
}
|
||
|
|
||
|
FILTER_OUTPUT(1, m_plaintext, m_result.messageLength, messageEnd);
|
||
|
}
|
||
|
FILTER_END_NO_MESSAGE_END;
|
||
|
}
|
||
|
|
||
|
RandomNumberGenerator &m_rng;
|
||
|
const PK_Decryptor &m_decryptor;
|
||
|
const NameValuePairs &m_parameters;
|
||
|
ByteQueue m_ciphertextQueue;
|
||
|
SecByteBlock m_plaintext;
|
||
|
DecodingResult m_result;
|
||
|
};
|
||
|
|
||
|
BufferedTransformation * PK_Decryptor::CreateDecryptionFilter(RandomNumberGenerator &rng, BufferedTransformation *attachment, const NameValuePairs ¶meters) const
|
||
|
{
|
||
|
return new PK_DefaultDecryptionFilter(rng, *this, attachment, parameters);
|
||
|
}
|
||
|
|
||
|
size_t PK_Signer::Sign(RandomNumberGenerator &rng, PK_MessageAccumulator *messageAccumulator, byte *signature) const
|
||
|
{
|
||
|
std::auto_ptr<PK_MessageAccumulator> m(messageAccumulator);
|
||
|
return SignAndRestart(rng, *m, signature, false);
|
||
|
}
|
||
|
|
||
|
size_t PK_Signer::SignMessage(RandomNumberGenerator &rng, const byte *message, size_t messageLen, byte *signature) const
|
||
|
{
|
||
|
std::auto_ptr<PK_MessageAccumulator> m(NewSignatureAccumulator(rng));
|
||
|
m->Update(message, messageLen);
|
||
|
return SignAndRestart(rng, *m, signature, false);
|
||
|
}
|
||
|
|
||
|
size_t PK_Signer::SignMessageWithRecovery(RandomNumberGenerator &rng, const byte *recoverableMessage, size_t recoverableMessageLength,
|
||
|
const byte *nonrecoverableMessage, size_t nonrecoverableMessageLength, byte *signature) const
|
||
|
{
|
||
|
std::auto_ptr<PK_MessageAccumulator> m(NewSignatureAccumulator(rng));
|
||
|
InputRecoverableMessage(*m, recoverableMessage, recoverableMessageLength);
|
||
|
m->Update(nonrecoverableMessage, nonrecoverableMessageLength);
|
||
|
return SignAndRestart(rng, *m, signature, false);
|
||
|
}
|
||
|
|
||
|
bool PK_Verifier::Verify(PK_MessageAccumulator *messageAccumulator) const
|
||
|
{
|
||
|
std::auto_ptr<PK_MessageAccumulator> m(messageAccumulator);
|
||
|
return VerifyAndRestart(*m);
|
||
|
}
|
||
|
|
||
|
bool PK_Verifier::VerifyMessage(const byte *message, size_t messageLen, const byte *signature, size_t signatureLength) const
|
||
|
{
|
||
|
std::auto_ptr<PK_MessageAccumulator> m(NewVerificationAccumulator());
|
||
|
InputSignature(*m, signature, signatureLength);
|
||
|
m->Update(message, messageLen);
|
||
|
return VerifyAndRestart(*m);
|
||
|
}
|
||
|
|
||
|
DecodingResult PK_Verifier::Recover(byte *recoveredMessage, PK_MessageAccumulator *messageAccumulator) const
|
||
|
{
|
||
|
std::auto_ptr<PK_MessageAccumulator> m(messageAccumulator);
|
||
|
return RecoverAndRestart(recoveredMessage, *m);
|
||
|
}
|
||
|
|
||
|
DecodingResult PK_Verifier::RecoverMessage(byte *recoveredMessage,
|
||
|
const byte *nonrecoverableMessage, size_t nonrecoverableMessageLength,
|
||
|
const byte *signature, size_t signatureLength) const
|
||
|
{
|
||
|
std::auto_ptr<PK_MessageAccumulator> m(NewVerificationAccumulator());
|
||
|
InputSignature(*m, signature, signatureLength);
|
||
|
m->Update(nonrecoverableMessage, nonrecoverableMessageLength);
|
||
|
return RecoverAndRestart(recoveredMessage, *m);
|
||
|
}
|
||
|
|
||
|
void SimpleKeyAgreementDomain::GenerateKeyPair(RandomNumberGenerator &rng, byte *privateKey, byte *publicKey) const
|
||
|
{
|
||
|
GeneratePrivateKey(rng, privateKey);
|
||
|
GeneratePublicKey(rng, privateKey, publicKey);
|
||
|
}
|
||
|
|
||
|
void AuthenticatedKeyAgreementDomain::GenerateStaticKeyPair(RandomNumberGenerator &rng, byte *privateKey, byte *publicKey) const
|
||
|
{
|
||
|
GenerateStaticPrivateKey(rng, privateKey);
|
||
|
GenerateStaticPublicKey(rng, privateKey, publicKey);
|
||
|
}
|
||
|
|
||
|
void AuthenticatedKeyAgreementDomain::GenerateEphemeralKeyPair(RandomNumberGenerator &rng, byte *privateKey, byte *publicKey) const
|
||
|
{
|
||
|
GenerateEphemeralPrivateKey(rng, privateKey);
|
||
|
GenerateEphemeralPublicKey(rng, privateKey, publicKey);
|
||
|
}
|
||
|
|
||
|
NAMESPACE_END
|
||
|
|
||
|
#endif
|