mirror of
https://github.com/shadps4-emu/ext-cryptopp.git
synced 2024-11-27 03:40:22 +00:00
107 lines
3.8 KiB
C++
107 lines
3.8 KiB
C++
#ifndef CRYPTOPP_ITERHASH_H
|
|
#define CRYPTOPP_ITERHASH_H
|
|
|
|
#include "cryptlib.h"
|
|
#include "secblock.h"
|
|
#include "misc.h"
|
|
#include "simple.h"
|
|
|
|
NAMESPACE_BEGIN(CryptoPP)
|
|
|
|
//! exception thrown when trying to hash more data than is allowed by a hash function
|
|
class CRYPTOPP_DLL HashInputTooLong : public InvalidDataFormat
|
|
{
|
|
public:
|
|
explicit HashInputTooLong(const std::string &alg)
|
|
: InvalidDataFormat("IteratedHashBase: input data exceeds maximum allowed by hash function " + alg) {}
|
|
};
|
|
|
|
//! _
|
|
template <class T, class BASE>
|
|
class CRYPTOPP_NO_VTABLE IteratedHashBase : public BASE
|
|
{
|
|
public:
|
|
typedef T HashWordType;
|
|
|
|
IteratedHashBase() : m_countLo(0), m_countHi(0) {}
|
|
unsigned int OptimalBlockSize() const {return this->BlockSize();}
|
|
unsigned int OptimalDataAlignment() const {return GetAlignmentOf<T>();}
|
|
void Update(const byte *input, size_t length);
|
|
byte * CreateUpdateSpace(size_t &size);
|
|
void Restart();
|
|
void TruncatedFinal(byte *digest, size_t size);
|
|
|
|
protected:
|
|
inline T GetBitCountHi() const {return (m_countLo >> (8*sizeof(T)-3)) + (m_countHi << 3);}
|
|
inline T GetBitCountLo() const {return m_countLo << 3;}
|
|
|
|
void PadLastBlock(unsigned int lastBlockSize, byte padFirst=0x80);
|
|
virtual void Init() =0;
|
|
|
|
virtual ByteOrder GetByteOrder() const =0;
|
|
virtual void HashEndianCorrectedBlock(const HashWordType *data) =0;
|
|
virtual size_t HashMultipleBlocks(const T *input, size_t length);
|
|
void HashBlock(const HashWordType *input) {HashMultipleBlocks(input, this->BlockSize());}
|
|
|
|
virtual T* DataBuf() =0;
|
|
virtual T* StateBuf() =0;
|
|
|
|
private:
|
|
T m_countLo, m_countHi;
|
|
};
|
|
|
|
//! _
|
|
template <class T_HashWordType, class T_Endianness, unsigned int T_BlockSize, class T_Base = HashTransformation>
|
|
class CRYPTOPP_NO_VTABLE IteratedHash : public IteratedHashBase<T_HashWordType, T_Base>
|
|
{
|
|
public:
|
|
typedef T_Endianness ByteOrderClass;
|
|
typedef T_HashWordType HashWordType;
|
|
|
|
CRYPTOPP_CONSTANT(BLOCKSIZE = T_BlockSize)
|
|
// BCB2006 workaround: can't use BLOCKSIZE here
|
|
CRYPTOPP_COMPILE_ASSERT((T_BlockSize & (T_BlockSize - 1)) == 0); // blockSize is a power of 2
|
|
unsigned int BlockSize() const {return T_BlockSize;}
|
|
|
|
ByteOrder GetByteOrder() const {return T_Endianness::ToEnum();}
|
|
|
|
inline static void CorrectEndianess(HashWordType *out, const HashWordType *in, size_t byteCount)
|
|
{
|
|
ConditionalByteReverse(T_Endianness::ToEnum(), out, in, byteCount);
|
|
}
|
|
|
|
protected:
|
|
T_HashWordType* DataBuf() {return this->m_data;}
|
|
FixedSizeSecBlock<T_HashWordType, T_BlockSize/sizeof(T_HashWordType)> m_data;
|
|
};
|
|
|
|
//! _
|
|
template <class T_HashWordType, class T_Endianness, unsigned int T_BlockSize, unsigned int T_StateSize, class T_Transform, unsigned int T_DigestSize = 0, bool T_StateAligned = false>
|
|
class CRYPTOPP_NO_VTABLE IteratedHashWithStaticTransform
|
|
: public ClonableImpl<T_Transform, AlgorithmImpl<IteratedHash<T_HashWordType, T_Endianness, T_BlockSize>, T_Transform> >
|
|
{
|
|
public:
|
|
CRYPTOPP_CONSTANT(DIGESTSIZE = T_DigestSize ? T_DigestSize : T_StateSize)
|
|
unsigned int DigestSize() const {return DIGESTSIZE;};
|
|
|
|
protected:
|
|
IteratedHashWithStaticTransform() {this->Init();}
|
|
void HashEndianCorrectedBlock(const T_HashWordType *data) {T_Transform::Transform(this->m_state, data);}
|
|
void Init() {T_Transform::InitState(this->m_state);}
|
|
|
|
T_HashWordType* StateBuf() {return this->m_state;}
|
|
FixedSizeAlignedSecBlock<T_HashWordType, T_BlockSize/sizeof(T_HashWordType), T_StateAligned> m_state;
|
|
};
|
|
|
|
#ifndef __GNUC__
|
|
CRYPTOPP_DLL_TEMPLATE_CLASS IteratedHashBase<word64, HashTransformation>;
|
|
CRYPTOPP_STATIC_TEMPLATE_CLASS IteratedHashBase<word64, MessageAuthenticationCode>;
|
|
|
|
CRYPTOPP_DLL_TEMPLATE_CLASS IteratedHashBase<word32, HashTransformation>;
|
|
CRYPTOPP_STATIC_TEMPLATE_CLASS IteratedHashBase<word32, MessageAuthenticationCode>;
|
|
#endif
|
|
|
|
NAMESPACE_END
|
|
|
|
#endif
|