xevion/easy7zip
1
0
Fork 0
mirror of https://github.com/Xevion/easy7zip.git synced 2025-12-16 22:11:49 -06:00
Code Issues Packages Projects Releases Wiki Activity

4.20

Browse Source
This commit is contained in:
Igor Pavlov
2005-05-30 00:00:00 +00:00
committed by Kornel Lesiński
parent 8c1b5c7b7e
commit 3c510ba80b
926 changed files with 40559 additions and 23519 deletions
Download Patch File Download Diff File Expand all files Collapse all files

47
7zip/Crypto/Rar20/Rar20Cipher.cpp
View File

@@ -10,36 +10,44 @@ namespace NRar20 {
static const int kBufferSize = 1 << 17;
CDecoder::CDecoder():
_buffer(0)
{
_buffer = new BYTE[kBufferSize];
}
CDecoder::~CDecoder()
{
delete []_buffer;
}
STDMETHODIMP CDecoder::CryptoSetPassword(const BYTE *data, UINT32 size)
STDMETHODIMP CDecoder::CryptoSetPassword(const Byte *data, UInt32 size)
{
_coder.SetPassword(data, size);
return S_OK;
}
STDMETHODIMP CDecoder::Init()
{
return S_OK;
}
STDMETHODIMP_(UInt32) CDecoder::Filter(Byte *data, UInt32 size)
{
const UInt16 kBlockSize = 16;
if (size > 0 && size < kBlockSize)
return kBlockSize;
UInt32 i;
for (i = 0; i + kBlockSize <= size; i += kBlockSize)
{
_coder.DecryptBlock(data + i);
}
return i;
}
/*
STDMETHODIMP CDecoder::Code(ISequentialInStream *inStream,
ISequentialOutStream *outStream, const UINT64 *inSize, const UINT64 *outSize,
ISequentialOutStream *outStream, const UInt64 *inSize, const UInt64 *outSize,
ICompressProgressInfo *progress)
{
UINT64 nowPos = 0;
UINT32 bufferPos = 0;
UINT32 processedSize;
UInt64 nowPos = 0;
UInt32 bufferPos = 0;
UInt32 processedSize;
while(true)
{
UINT32 size = kBufferSize - bufferPos;
UInt32 size = kBufferSize - bufferPos;
RINOK(inStream->Read(_buffer + bufferPos, size, &processedSize));
UINT32 anEndPos = bufferPos + processedSize;
UInt32 anEndPos = bufferPos + processedSize;
for (;bufferPos + 16 <= anEndPos; bufferPos += 16)
_coder.DecryptBlock(_buffer + bufferPos);
@@ -47,7 +55,7 @@ STDMETHODIMP CDecoder::Code(ISequentialInStream *inStream,
return S_OK;
if (outSize != NULL && nowPos + bufferPos > *outSize)
bufferPos = UINT32(*outSize - nowPos);
bufferPos = UInt32(*outSize - nowPos);
RINOK(outStream->Write(_buffer, bufferPos, &processedSize));
if (bufferPos != processedSize)
@@ -63,5 +71,6 @@ STDMETHODIMP CDecoder::Code(ISequentialInStream *inStream,
bufferPos = i;
}
}
*/
}}

15
7zip/Crypto/Rar20/Rar20Cipher.h
View File

@@ -14,24 +14,19 @@ namespace NCrypto {
namespace NRar20 {
class CDecoder:
public ICompressCoder,
public ICompressFilter,
public ICryptoSetPassword,
public CMyUnknownImp
{
BYTE *_buffer;
public:
CData _coder;
CDecoder();
~CDecoder();
MY_UNKNOWN_IMP1(ICryptoSetPassword)
STDMETHOD(Code)(ISequentialInStream *inStream,
ISequentialOutStream *outStream, UINT64 const *inSize, const UINT64 *outSize,
ICompressProgressInfo *progress);
STDMETHOD(CryptoSetPassword)(const BYTE *data, UINT32 size);
STDMETHOD(Init)();
STDMETHOD_(UInt32, Filter)(Byte *data, UInt32 size);
STDMETHOD(CryptoSetPassword)(const Byte *data, UInt32 size);
};

124
7zip/Crypto/Rar20/Rar20Crypto.cpp
View File

@@ -3,17 +3,17 @@
#include "StdAfx.h"
#include "Rar20Crypto.h"
#include "Common/Crc.h"
#include "../../../Common/CRC.h"
#define rol(x,n) (((x)<<(n)) | ((x)>>(8*sizeof(x)-(n))))
#define ror(x,n) (((x)>>(n)) | ((x)<<(8*sizeof(x)-(n))))
#define rol(x,n) (((x) << (n)) | ((x) >> (8 * sizeof(x) - (n))))
#define ror(x,n) (((x) >> (n)) | ((x) << (8 * sizeof(x) - (n))))
namespace NCrypto {
namespace NRar20 {
static const int kNumRounds = 32;
static const BYTE InitSubstTable[256]={
static const Byte InitSubstTable[256] = {
215, 19,149, 35, 73,197,192,205,249, 28, 16,119, 48,221, 2, 42,
232, 1,177,233, 14, 88,219, 25,223,195,244, 90, 87,239,153,137,
255,199,147, 70, 92, 66,246, 13,216, 40, 62, 29,217,230, 86, 6,
@@ -32,23 +32,22 @@ static const BYTE InitSubstTable[256]={
116,184,160, 96,109, 37, 30,106,140,104,150, 5,204,117,112, 84
};
void CData::UpdateKeys(const BYTE *data)
void CData::UpdateKeys(const Byte *data)
{
for (int i = 0; i < 16; i += 4)
for (int j = 0; j < 4; j ++)
for (int j = 0; j < 4; j++)
Keys[j] ^= CCRC::Table[data[i + j]];
}
static void Swap(BYTE *Ch1, BYTE *Ch2)
static void Swap(Byte *b1, Byte *b2)
{
BYTE Ch = *Ch1;
*Ch1 = *Ch2;
*Ch2 = Ch;
Byte b = *b1;
*b1 = *b2;
*b2 = b;
}
void CData::SetPassword(const BYTE *password, UINT32 passwordLength)
void CData::SetPassword(const Byte *password, UInt32 passwordLength)
{
// SetOldKeys(password);
Keys[0] = 0xD3A3B879L;
@@ -56,41 +55,56 @@ void CData::SetPassword(const BYTE *password, UINT32 passwordLength)
Keys[2] = 0x7515A235L;
Keys[3] = 0xA4E7F123L;
BYTE Psw[256];
memset(Psw, 0, sizeof(Psw));
Byte psw[256];
memset(psw, 0, sizeof(psw));
memmove(Psw, password, passwordLength);
memmove(psw, password, passwordLength);
memcpy(SubstTable, InitSubstTable, sizeof(SubstTable));
for (UINT32 j = 0; j < 256; j++)
for (UINT32 i = 0; i < passwordLength; i += 2)
for (UInt32 j = 0; j < 256; j++)
for (UInt32 i = 0; i < passwordLength; i += 2)
{
UINT32 n2 = (BYTE)CCRC::Table[(Psw[i + 1] + j) & 0xFF];
UINT32 n1 = (BYTE)CCRC::Table[(Psw[i] - j) & 0xFF];
for (UINT32 k = 1; (n1 & 0xFF) != n2; n1++, k++)
UInt32 n2 = (Byte)CCRC::Table[(psw[i + 1] + j) & 0xFF];
UInt32 n1 = (Byte)CCRC::Table[(psw[i] - j) & 0xFF];
for (UInt32 k = 1; (n1 & 0xFF) != n2; n1++, k++)
Swap(&SubstTable[n1 & 0xFF], &SubstTable[(n1 + i + k) & 0xFF]);
}
for (UINT32 i = 0; i < passwordLength; i+= 16)
EncryptBlock(&Psw[i]);
for (UInt32 i = 0; i < passwordLength; i+= 16)
EncryptBlock(&psw[i]);
}
void CData::EncryptBlock(BYTE *Buf)
static inline UInt32 GetUInt32FromMemLE(const Byte *p)
{
UINT32 A, B, C, D, T, TA, TB;
return p[0] | (((UInt32)p[1]) << 8) | (((UInt32)p[2]) << 16) | (((UInt32)p[3]) << 24);
}
UINT32 *BufPtr;
BufPtr = (UINT32 *)Buf;
static inline void WriteUInt32ToMemLE(UInt32 v, Byte *p)
{
p[0] = (Byte)v;
p[1] = (Byte)(v >> 8);
p[2] = (Byte)(v >> 16);
p[3] = (Byte)(v >> 24);
}
void CData::CryptBlock(Byte *buf, bool encrypt)
{
Byte inBuf[16];
UInt32 A, B, C, D, T, TA, TB;
A = GetUInt32FromMemLE(buf + 0) ^ Keys[0];
B = GetUInt32FromMemLE(buf + 4) ^ Keys[1];
C = GetUInt32FromMemLE(buf + 8) ^ Keys[2];
D = GetUInt32FromMemLE(buf + 12) ^ Keys[3];
if (!encrypt)
memcpy(inBuf, buf, sizeof(inBuf));
A = BufPtr[0] ^ Keys[0];
B = BufPtr[1] ^ Keys[1];
C = BufPtr[2] ^ Keys[2];
D = BufPtr[3] ^ Keys[3];
for(int i = 0; i < kNumRounds; i++)
{
T = ((C + rol(D, 11)) ^ Keys[i & 3]);
UInt32 key = Keys[(encrypt ? i : (kNumRounds - 1 - i)) & 3];
T = ((C + rol(D, 11)) ^ key);
TA = A ^ SubstLong(T);
T=((D ^ rol(C, 17)) + Keys[i & 3]);
T = ((D ^ rol(C, 17)) + key);
TB = B ^ SubstLong(T);
A = C;
B = D;
@@ -98,47 +112,13 @@ void CData::EncryptBlock(BYTE *Buf)
D = TB;
}
BufPtr[0] = C ^ Keys[0];
BufPtr[1] = D ^ Keys[1];
BufPtr[2] = A ^ Keys[2];
BufPtr[3] = B ^ Keys[3];
WriteUInt32ToMemLE(C ^ Keys[0], buf + 0);
WriteUInt32ToMemLE(D ^ Keys[1], buf + 4);
WriteUInt32ToMemLE(A ^ Keys[2], buf + 8);
WriteUInt32ToMemLE(B ^ Keys[3], buf + 12);
UpdateKeys(Buf);
UpdateKeys(encrypt ? buf : inBuf);
}
void CData::DecryptBlock(BYTE *Buf)
{
BYTE InBuf[16];
UINT32 A, B, C, D, T, TA, TB;
UINT32 *BufPtr;
BufPtr = (UINT32 *)Buf;
A = BufPtr[0] ^ Keys[0];
B = BufPtr[1] ^ Keys[1];
C = BufPtr[2] ^ Keys[2];
D = BufPtr[3] ^ Keys[3];
memcpy(InBuf, Buf, sizeof(InBuf));
for(int i = kNumRounds - 1; i >= 0; i--)
{
T = ((C + rol(D, 11)) ^ Keys[i & 3]);
TA = A ^ SubstLong(T);
T = ((D ^ rol(C, 17)) + Keys[i & 3]);
TB = B ^ SubstLong(T);
A = C;
B = D;
C = TA;
D = TB;
}
BufPtr[0] = C ^ Keys[0];
BufPtr[1] = D ^ Keys[1];
BufPtr[2] = A ^ Keys[2];
BufPtr[3] = B ^ Keys[3];
UpdateKeys(InBuf);
}
}}

27
7zip/Crypto/Rar20/Rar20Crypto.h
View File

@@ -1,30 +1,31 @@
// Crypto/Rar20/Crypto.h
#pragma once
#ifndef __CRYPTO_RAR20_CRYPTO_H
#define __CRYPTO_RAR20_CRYPTO_H
#include "../../../Common/Types.h"
namespace NCrypto {
namespace NRar20 {
class CData
{
BYTE SubstTable[256];
UINT32 Keys[4];
UINT32 SubstLong(UINT32 t)
Byte SubstTable[256];
UInt32 Keys[4];
UInt32 SubstLong(UInt32 t)
{
return (UINT32)SubstTable[(int)t & 255] |
((UINT32)SubstTable[(int)(t >> 8) & 255] << 8) |
((UINT32)SubstTable[(int)(t >> 16) & 255] << 16) |
((UINT32)SubstTable[(int)(t >> 24) & 255] << 24);
return (UInt32)SubstTable[(int)t & 255] |
((UInt32)SubstTable[(int)(t >> 8) & 255] << 8) |
((UInt32)SubstTable[(int)(t >> 16) & 255] << 16) |
((UInt32)SubstTable[(int)(t >> 24) & 255] << 24);
}
void UpdateKeys(const BYTE *data);
void UpdateKeys(const Byte *data);
void CryptBlock(Byte *buf, bool encrypt);
public:
void EncryptBlock(BYTE *Buf);
void DecryptBlock(BYTE *Buf);
void SetPassword(const BYTE *password, UINT32 passwordLength);
void EncryptBlock(Byte *buf) { CryptBlock(buf, true); }
void DecryptBlock(Byte *buf) { CryptBlock(buf, false); }
void SetPassword(const Byte *password, UInt32 passwordLength);
};
}}

8
7zip/Crypto/Rar20/StdAfx.h Executable file
View File

@@ -0,0 +1,8 @@
// StdAfx.h
#ifndef __STDAFX_H
#define __STDAFX_H
#include "../../../Common/MyWindows.h"
#endif