aboutsummaryrefslogtreecommitdiff
path: root/lib/UnrarXLib/crypt.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'lib/UnrarXLib/crypt.cpp')
-rw-r--r--lib/UnrarXLib/crypt.cpp373
1 files changed, 0 insertions, 373 deletions
diff --git a/lib/UnrarXLib/crypt.cpp b/lib/UnrarXLib/crypt.cpp
deleted file mode 100644
index 4d1a95e247..0000000000
--- a/lib/UnrarXLib/crypt.cpp
+++ /dev/null
@@ -1,373 +0,0 @@
-#include "rar.hpp"
-
-#ifndef SFX_MODULE
-extern uint CRCTab[256];
-#endif
-
-#define NROUNDS 32
-
-#define rol(x,n,xsize) (((x)<<(n)) | ((x)>>(xsize-(n))))
-#define ror(x,n,xsize) (((x)>>(n)) | ((x)<<(xsize-(n))))
-
-#define substLong(t) ( (uint)SubstTable[(uint)t&255] | \
- ((uint)SubstTable[(int)(t>> 8)&255]<< 8) | \
- ((uint)SubstTable[(int)(t>>16)&255]<<16) | \
- ((uint)SubstTable[(int)(t>>24)&255]<<24) )
-
-CryptKeyCacheItem CryptData::Cache[4];
-int CryptData::CachePos=0;
-
-
-#ifndef SFX_MODULE
-static 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,
- 71, 24,171,196,101,113,218,123, 93, 91,163,178,202, 67, 44,235,
- 107,250, 75,234, 49,167,125,211, 83,114,157,144, 32,193,143, 36,
- 158,124,247,187, 89,214,141, 47,121,228, 61,130,213,194,174,251,
- 97,110, 54,229,115, 57,152, 94,105,243,212, 55,209,245, 63, 11,
- 164,200, 31,156, 81,176,227, 21, 76, 99,139,188,127, 17,248, 51,
- 207,120,189,210, 8,226, 41, 72,183,203,135,165,166, 60, 98, 7,
- 122, 38,155,170, 69,172,252,238, 39,134, 59,128,236, 27,240, 80,
- 131, 3, 85,206,145, 79,154,142,159,220,201,133, 74, 64, 20,129,
- 224,185,138,103,173,182, 43, 34,254, 82,198,151,231,180, 58, 10,
- 118, 26,102, 12, 50,132, 22,191,136,111,162,179, 45, 4,148,108,
- 161, 56, 78,126,242,222, 15,175,146, 23, 33,241,181,190, 77,225,
- 0, 46,169,186, 68, 95,237, 65, 53,208,253,168, 9, 18,100, 52,
- 116,184,160, 96,109, 37, 30,106,140,104,150, 5,204,117,112, 84
-};
-#endif
-
-
-
-void CryptData::DecryptBlock(byte *Buf,int Size)
-{
- rin.blockDecrypt(Buf,Size,Buf);
-}
-
-
-#ifndef SFX_MODULE
-void CryptData::EncryptBlock20(byte *Buf)
-{
- uint A,B,C,D,T,TA,TB;
-#if defined(BIG_ENDIAN) || !defined(PRESENT_INT32) || !defined(ALLOW_NOT_ALIGNED_INT)
- A=((uint)Buf[0]|((uint)Buf[1]<<8)|((uint)Buf[2]<<16)|((uint)Buf[3]<<24))^Key[0];
- B=((uint)Buf[4]|((uint)Buf[5]<<8)|((uint)Buf[6]<<16)|((uint)Buf[7]<<24))^Key[1];
- C=((uint)Buf[8]|((uint)Buf[9]<<8)|((uint)Buf[10]<<16)|((uint)Buf[11]<<24))^Key[2];
- D=((uint)Buf[12]|((uint)Buf[13]<<8)|((uint)Buf[14]<<16)|((uint)Buf[15]<<24))^Key[3];
-#else
- uint32 *BufPtr=(uint32 *)Buf;
- A=BufPtr[0]^Key[0];
- B=BufPtr[1]^Key[1];
- C=BufPtr[2]^Key[2];
- D=BufPtr[3]^Key[3];
-#endif
- for(int I=0;I<NROUNDS;I++)
- {
- T=((C+rol(D,11,32))^Key[I&3]);
- TA=A^substLong(T);
- T=((D^rol(C,17,32))+Key[I&3]);
- TB=B^substLong(T);
- A=C;
- B=D;
- C=TA;
- D=TB;
- }
-#if defined(BIG_ENDIAN) || !defined(PRESENT_INT32) || !defined(ALLOW_NOT_ALIGNED_INT)
- C^=Key[0];
- Buf[0]=(byte)C;
- Buf[1]=(byte)(C>>8);
- Buf[2]=(byte)(C>>16);
- Buf[3]=(byte)(C>>24);
- D^=Key[1];
- Buf[4]=(byte)D;
- Buf[5]=(byte)(D>>8);
- Buf[6]=(byte)(D>>16);
- Buf[7]=(byte)(D>>24);
- A^=Key[2];
- Buf[8]=(byte)A;
- Buf[9]=(byte)(A>>8);
- Buf[10]=(byte)(A>>16);
- Buf[11]=(byte)(A>>24);
- B^=Key[3];
- Buf[12]=(byte)B;
- Buf[13]=(byte)(B>>8);
- Buf[14]=(byte)(B>>16);
- Buf[15]=(byte)(B>>24);
-#else
- BufPtr[0]=C^Key[0];
- BufPtr[1]=D^Key[1];
- BufPtr[2]=A^Key[2];
- BufPtr[3]=B^Key[3];
-#endif
- UpdKeys(Buf);
-}
-
-
-void CryptData::DecryptBlock20(byte *Buf)
-{
- byte InBuf[16];
- uint A,B,C,D,T,TA,TB;
-#if defined(BIG_ENDIAN) || !defined(PRESENT_INT32) || !defined(ALLOW_NOT_ALIGNED_INT)
- A=((uint)Buf[0]|((uint)Buf[1]<<8)|((uint)Buf[2]<<16)|((uint)Buf[3]<<24))^Key[0];
- B=((uint)Buf[4]|((uint)Buf[5]<<8)|((uint)Buf[6]<<16)|((uint)Buf[7]<<24))^Key[1];
- C=((uint)Buf[8]|((uint)Buf[9]<<8)|((uint)Buf[10]<<16)|((uint)Buf[11]<<24))^Key[2];
- D=((uint)Buf[12]|((uint)Buf[13]<<8)|((uint)Buf[14]<<16)|((uint)Buf[15]<<24))^Key[3];
-#else
- uint32 *BufPtr=(uint32 *)Buf;
- A=BufPtr[0]^Key[0];
- B=BufPtr[1]^Key[1];
- C=BufPtr[2]^Key[2];
- D=BufPtr[3]^Key[3];
-#endif
- memcpy(InBuf,Buf,sizeof(InBuf));
- for(int I=NROUNDS-1;I>=0;I--)
- {
- T=((C+rol(D,11,32))^Key[I&3]);
- TA=A^substLong(T);
- T=((D^rol(C,17,32))+Key[I&3]);
- TB=B^substLong(T);
- A=C;
- B=D;
- C=TA;
- D=TB;
- }
-#if defined(BIG_ENDIAN) || !defined(PRESENT_INT32) || !defined(ALLOW_NOT_ALIGNED_INT)
- C^=Key[0];
- Buf[0]=(byte)C;
- Buf[1]=(byte)(C>>8);
- Buf[2]=(byte)(C>>16);
- Buf[3]=(byte)(C>>24);
- D^=Key[1];
- Buf[4]=(byte)D;
- Buf[5]=(byte)(D>>8);
- Buf[6]=(byte)(D>>16);
- Buf[7]=(byte)(D>>24);
- A^=Key[2];
- Buf[8]=(byte)A;
- Buf[9]=(byte)(A>>8);
- Buf[10]=(byte)(A>>16);
- Buf[11]=(byte)(A>>24);
- B^=Key[3];
- Buf[12]=(byte)B;
- Buf[13]=(byte)(B>>8);
- Buf[14]=(byte)(B>>16);
- Buf[15]=(byte)(B>>24);
-#else
- BufPtr[0]=C^Key[0];
- BufPtr[1]=D^Key[1];
- BufPtr[2]=A^Key[2];
- BufPtr[3]=B^Key[3];
-#endif
- UpdKeys(InBuf);
-}
-
-
-void CryptData::UpdKeys(byte *Buf)
-{
- for (int I=0;I<16;I+=4)
- {
- Key[0]^=CRCTab[Buf[I]];
- Key[1]^=CRCTab[Buf[I+1]];
- Key[2]^=CRCTab[Buf[I+2]];
- Key[3]^=CRCTab[Buf[I+3]];
- }
-}
-
-
-void CryptData::Swap(byte *Ch1,byte *Ch2)
-{
- byte Ch=*Ch1;
- *Ch1=*Ch2;
- *Ch2=Ch;
-}
-#endif
-
-
-void CryptData::SetCryptKeys(char *Password,byte *Salt,bool Encrypt,bool OldOnly)
-{
- if (*Password==0)
- return;
- if (OldOnly)
- {
-#ifndef SFX_MODULE
- if (CRCTab[1]==0)
- InitCRC();
- byte Psw[MAXPASSWORD];
- SetOldKeys(Password);
- Key[0]=0xD3A3B879L;
- Key[1]=0x3F6D12F7L;
- Key[2]=0x7515A235L;
- Key[3]=0xA4E7F123L;
- memset(Psw,0,sizeof(Psw));
- strncpy((char *)Psw,Password,MAXPASSWORD-1);
- int PswLength=strlen(Password);
- memcpy(SubstTable,InitSubstTable,sizeof(SubstTable));
- for (int J=0;J<256;J++)
- for (int I=0;I<PswLength;I+=2)
- {
- uint N1=(byte)CRCTab[(Psw[I]-J)&0xff];
- uint N2=(byte)CRCTab[(Psw[I+1]+J)&0xff];
- for (int K=1;N1!=N2;N1=(N1+1)&0xff,K++)
- Swap(&SubstTable[N1],&SubstTable[(N1+I+K)&0xff]);
- }
- for (int I=0;I<PswLength;I+=16)
- EncryptBlock20(&Psw[I]);
-#endif
- return;
- }
-
- bool Cached=false;
- for (unsigned int I=0;I<sizeof(Cache)/sizeof(Cache[0]);I++)
- if (strcmp(Cache[I].Password,Password)==0 &&
- ((Salt==NULL && !Cache[I].SaltPresent) ||
- (Salt!=NULL && Cache[I].SaltPresent && memcmp(Cache[I].Salt,Salt,SALT_SIZE)==0)))
- {
- memcpy(AESKey,Cache[I].AESKey,sizeof(AESKey));
- memcpy(AESInit,Cache[I].AESInit,sizeof(AESInit));
- Cached=true;
- break;
- }
-
- if (!Cached)
- {
- wchar PswW[MAXPASSWORD];
- CharToWide(Password,PswW,MAXPASSWORD-1);
- PswW[MAXPASSWORD-1]=0;
- byte RawPsw[2*MAXPASSWORD+SALT_SIZE];
- WideToRaw(PswW,RawPsw);
- int RawLength=2*strlenw(PswW);
- if (Salt!=NULL)
- {
- memcpy(RawPsw+RawLength,Salt,SALT_SIZE);
- RawLength+=SALT_SIZE;
- }
- hash_context c;
- hash_initial(&c);
-
- const int HashRounds=0x40000;
- for (int I=0;I<HashRounds;I++)
- {
- hash_process( &c, RawPsw, RawLength);
- byte PswNum[3];
- PswNum[0]=(byte)I;
- PswNum[1]=(byte)(I>>8);
- PswNum[2]=(byte)(I>>16);
- hash_process( &c, PswNum, 3);
- if (I%(HashRounds/16)==0)
- {
- hash_context tempc=c;
- uint32 digest[5];
- hash_final( &tempc, digest);
- AESInit[I/(HashRounds/16)]=(byte)digest[4];
- }
- }
- uint32 digest[5];
- hash_final( &c, digest);
- for (int I=0;I<4;I++)
- for (int J=0;J<4;J++)
- AESKey[I*4+J]=(byte)(digest[I]>>(J*8));
-
- strcpy(Cache[CachePos].Password,Password);
- if ((Cache[CachePos].SaltPresent=(Salt!=NULL))==true)
- memcpy(Cache[CachePos].Salt,Salt,SALT_SIZE);
- memcpy(Cache[CachePos].AESKey,AESKey,sizeof(AESKey));
- memcpy(Cache[CachePos].AESInit,AESInit,sizeof(AESInit));
- CachePos=(CachePos+1)%(sizeof(Cache)/sizeof(Cache[0]));
- }
- rin.init(Encrypt ? Rijndael::Encrypt : Rijndael::Decrypt,AESKey,AESInit);
-}
-
-
-#ifndef SFX_MODULE
-void CryptData::SetOldKeys(char *Password)
-{
- uint PswCRC=CRC(0xffffffff,Password,strlen(Password));
- OldKey[0]=PswCRC&0xffff;
- OldKey[1]=(PswCRC>>16)&0xffff;
- OldKey[2]=OldKey[3]=0;
- PN1=PN2=PN3=0;
- byte Ch;
- while ((Ch=*Password)!=0)
- {
- PN1+=Ch;
- PN2^=Ch;
- PN3+=Ch;
- PN3=(byte)rol(PN3,1,8);
- OldKey[2]^=Ch^CRCTab[Ch];
- OldKey[3]+=Ch+(CRCTab[Ch]>>16);
- Password++;
- }
-}
-
-
-void CryptData::SetAV15Encryption()
-{
- OldKey[0]=0x4765;
- OldKey[1]=0x9021;
- OldKey[2]=0x7382;
- OldKey[3]=0x5215;
-}
-
-
-void CryptData::SetCmt13Encryption()
-{
- PN1=0;
- PN2=7;
- PN3=77;
-}
-
-
-void CryptData::Crypt(byte *Data,uint Count,int Method)
-{
- if (Method==OLD_DECODE)
- Decode13(Data,Count);
- else
- if (Method==OLD_ENCODE)
- Encode13(Data,Count);
- else
- Crypt15(Data,Count);
-}
-
-
-void CryptData::Encode13(byte *Data,uint Count)
-{
- while (Count--)
- {
- PN2+=PN3;
- PN1+=PN2;
- *Data+=PN1;
- Data++;
- }
-}
-
-
-void CryptData::Decode13(byte *Data,uint Count)
-{
- while (Count--)
- {
- PN2+=PN3;
- PN1+=PN2;
- *Data-=PN1;
- Data++;
- }
-}
-
-
-void CryptData::Crypt15(byte *Data,uint Count)
-{
- while (Count--)
- {
- OldKey[0]+=0x1234;
- OldKey[1]^=CRCTab[(OldKey[0] & 0x1fe)>>1];
- OldKey[2]-=CRCTab[(OldKey[0] & 0x1fe)>>1]>>16;
- OldKey[0]^=OldKey[2];
- OldKey[3]=ror(OldKey[3]&0xffff,1,16)^OldKey[1];
- OldKey[3]=ror(OldKey[3]&0xffff,1,16);
- OldKey[0]^=OldKey[3];
- *Data^=(byte)(OldKey[0]>>8);
- Data++;
- }
-}
-#endif
generated by cgit v1.2.3 (git 2.26.2) at 2025-02-27 17:34:18 +0000