📄 sha1.cpp
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// RIPEMD.cpp: implementation of the CMd5A class.
//
//////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "SHA1.h"
#include "msp.h"
#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
CSHA::CSHA()
{
}
CSHA::~CSHA()
{
}
void CSHA::SHAInit (SHA_CTX *context) /* context */
{
context->count[0] = context->count[1] = 0;
context->state[0] = 0x67452301; /* Load magic initialization constants.*/
context->state[1] = 0xefcdab89;
context->state[2] = 0x98badcfe;
context->state[3] = 0x10325476;
context->state[4] = 0xc3d2e1f0;
}
void CSHA::SHAUpdate (SHA_CTX *context, unsigned char *input,unsigned int inputLen )
{
unsigned int i, index, partLen;
index = (unsigned int)((context->count[0] >> 3) & 0x3F); /* Compute number of bytes mod 64 */
if ( (context->count[0] += ( (UINT4)inputLen << 3) ) < ( (UINT4)inputLen << 3 ) )
context->count[1]++;
context->count[1] += ((UINT4)inputLen >> 29);
partLen = 64 - index;
/* Transform as many times as possible.*/
if (inputLen >= partLen)
{
SHA_memcpy( (POINTER)&context->buffer[index], (POINTER)input, partLen);
SHATransform (context->state, context->buffer);
for (i = partLen; i + 63 < inputLen; i += 64)
SHATransform (context->state, &input[i]);
index = 0;
}
else
i = 0;
/* Buffer remaining input */
SHA_memcpy( (POINTER)&context->buffer[index], (POINTER)&input[i],inputLen-i );
}
void CSHA::SHAFinal (unsigned char digest[16], SHA_CTX *context)
/* message digest */ /* context */
{
unsigned char bits[8];
unsigned int index, padLen;
Encode (bits, context->count, 8); /* Save number of bits */
/* Pad out to 56 mod 64.*/
index = (unsigned int)((context->count[0] >> 3) & 0x3f);
padLen = (index < 56) ? (56 - index) : (120 - index);
SHAUpdate (context,(unsigned char*) PADDING, padLen);
SHAUpdate (context, bits, 8); /* Append length (before padding) */
Encode (digest, context->state, 16); /* Store state in digest */
/* Zeroize sensitive information.*/
SHA_memset ((POINTER)context, 0, sizeof (*context));
}
/* RIP basic transformation. Transforms state based on block.
*/
void CSHA::SHATransform (UINT4 state[4],unsigned char block[64])
{
int i=0;
UINT4 A, B, C, D, E,eData[16];
A = state[0];
B = state[1];
C = state[2];
D = state[3];
E = state[4];
Decode (eData, block, 64);
subRound( A, B, C, D, E, f1, K1, eData[ 0 ] );
subRound( E, A, B, C, D, f1, K1, eData[ 1 ] );
subRound( D, E, A, B, C, f1, K1, eData[ 2 ] );
subRound( C, D, E, A, B, f1, K1, eData[ 3 ] );
subRound( B, C, D, E, A, f1, K1, eData[ 4 ] );
subRound( A, B, C, D, E, f1, K1, eData[ 5 ] );
subRound( E, A, B, C, D, f1, K1, eData[ 6 ] );
subRound( D, E, A, B, C, f1, K1, eData[ 7 ] );
subRound( C, D, E, A, B, f1, K1, eData[ 8 ] );
subRound( B, C, D, E, A, f1, K1, eData[ 9 ] );
subRound( A, B, C, D, E, f1, K1, eData[ 10 ] );
subRound( E, A, B, C, D, f1, K1, eData[ 11 ] );
subRound( D, E, A, B, C, f1, K1, eData[ 12 ] );
subRound( C, D, E, A, B, f1, K1, eData[ 13 ] );
subRound( B, C, D, E, A, f1, K1, eData[ 14 ] );
subRound( A, B, C, D, E, f1, K1, eData[ 15 ] );
subRound( E, A, B, C, D, f1, K1, expand( eData, 16 ) );
subRound( D, E, A, B, C, f1, K1, expand( eData, 17 ) );
subRound( C, D, E, A, B, f1, K1, expand( eData, 18 ) );
subRound( B, C, D, E, A, f1, K1, expand( eData, 19 ) );
subRound( A, B, C, D, E, f2, K2, expand( eData, 20 ) );
subRound( E, A, B, C, D, f2, K2, expand( eData, 21 ) );
subRound( D, E, A, B, C, f2, K2, expand( eData, 22 ) );
subRound( C, D, E, A, B, f2, K2, expand( eData, 23 ) );
subRound( B, C, D, E, A, f2, K2, expand( eData, 24 ) );
subRound( A, B, C, D, E, f2, K2, expand( eData, 25 ) );
subRound( E, A, B, C, D, f2, K2, expand( eData, 26 ) );
subRound( D, E, A, B, C, f2, K2, expand( eData, 27 ) );
subRound( C, D, E, A, B, f2, K2, expand( eData, 28 ) );
subRound( B, C, D, E, A, f2, K2, expand( eData, 29 ) );
subRound( A, B, C, D, E, f2, K2, expand( eData, 30 ) );
subRound( E, A, B, C, D, f2, K2, expand( eData, 31 ) );
subRound( D, E, A, B, C, f2, K2, expand( eData, 32 ) );
subRound( C, D, E, A, B, f2, K2, expand( eData, 33 ) );
subRound( B, C, D, E, A, f2, K2, expand( eData, 34 ) );
subRound( A, B, C, D, E, f2, K2, expand( eData, 35 ) );
subRound( E, A, B, C, D, f2, K2, expand( eData, 36 ) );
subRound( D, E, A, B, C, f2, K2, expand( eData, 37 ) );
subRound( C, D, E, A, B, f2, K2, expand( eData, 38 ) );
subRound( B, C, D, E, A, f2, K2, expand( eData, 39 ) );
subRound( A, B, C, D, E, f3, K3, expand( eData, 40 ) );
subRound( E, A, B, C, D, f3, K3, expand( eData, 41 ) );
subRound( D, E, A, B, C, f3, K3, expand( eData, 42 ) );
subRound( C, D, E, A, B, f3, K3, expand( eData, 43 ) );
subRound( B, C, D, E, A, f3, K3, expand( eData, 44 ) );
subRound( A, B, C, D, E, f3, K3, expand( eData, 45 ) );
subRound( E, A, B, C, D, f3, K3, expand( eData, 46 ) );
subRound( D, E, A, B, C, f3, K3, expand( eData, 47 ) );
subRound( C, D, E, A, B, f3, K3, expand( eData, 48 ) );
subRound( B, C, D, E, A, f3, K3, expand( eData, 49 ) );
subRound( A, B, C, D, E, f3, K3, expand( eData, 50 ) );
subRound( E, A, B, C, D, f3, K3, expand( eData, 51 ) );
subRound( D, E, A, B, C, f3, K3, expand( eData, 52 ) );
subRound( C, D, E, A, B, f3, K3, expand( eData, 53 ) );
subRound( B, C, D, E, A, f3, K3, expand( eData, 54 ) );
subRound( A, B, C, D, E, f3, K3, expand( eData, 55 ) );
subRound( E, A, B, C, D, f3, K3, expand( eData, 56 ) );
subRound( D, E, A, B, C, f3, K3, expand( eData, 57 ) );
subRound( C, D, E, A, B, f3, K3, expand( eData, 58 ) );
subRound( B, C, D, E, A, f3, K3, expand( eData, 59 ) );
subRound( A, B, C, D, E, f4, K4, expand( eData, 60 ) );
subRound( E, A, B, C, D, f4, K4, expand( eData, 61 ) );
subRound( D, E, A, B, C, f4, K4, expand( eData, 62 ) );
subRound( C, D, E, A, B, f4, K4, expand( eData, 63 ) );
subRound( B, C, D, E, A, f4, K4, expand( eData, 64 ) );
subRound( A, B, C, D, E, f4, K4, expand( eData, 65 ) );
subRound( E, A, B, C, D, f4, K4, expand( eData, 66 ) );
subRound( D, E, A, B, C, f4, K4, expand( eData, 67 ) );
subRound( C, D, E, A, B, f4, K4, expand( eData, 68 ) );
subRound( B, C, D, E, A, f4, K4, expand( eData, 69 ) );
subRound( A, B, C, D, E, f4, K4, expand( eData, 70 ) );
subRound( E, A, B, C, D, f4, K4, expand( eData, 71 ) );
subRound( D, E, A, B, C, f4, K4, expand( eData, 72 ) );
subRound( C, D, E, A, B, f4, K4, expand( eData, 73 ) );
subRound( B, C, D, E, A, f4, K4, expand( eData, 74 ) );
subRound( A, B, C, D, E, f4, K4, expand( eData, 75 ) );
subRound( E, A, B, C, D, f4, K4, expand( eData, 76 ) );
subRound( D, E, A, B, C, f4, K4, expand( eData, 77 ) );
subRound( C, D, E, A, B, f4, K4, expand( eData, 78 ) );
subRound( B, C, D, E, A, f4, K4, expand( eData, 79 ) );
state[0] += A;
state[1] += B;
state[2] += C;
state[3] += D;
state[4] += E;
/* Zeroize sensitive information.*/
SHA_memset ((POINTER)eData, 0, sizeof(eData));
}
/* Encodes input (UINT4) into output (unsigned char). Assumes len is
a multiple of 4.
*/
void CSHA::Encode (unsigned char *output,UINT4 *input,unsigned int len)
{
unsigned int i, j;
for (i = 0, j = 0; j < len; i++, j += 4)
{
output[j] = (unsigned char)(input[i] & 0xff);
output[j+1] = (unsigned char)((input[i] >> 8) & 0xff);
output[j+2] = (unsigned char)((input[i] >> 16) & 0xff);
output[j+3] = (unsigned char)((input[i] >> 24) & 0xff);
}
}
/* Decodes input (unsigned char) into output (UINT4). Assumes len is
a multiple of 4.
*/
void CSHA::Decode (UINT4 *output,unsigned char *input,unsigned int len)
{
unsigned int i, j;
for (i = 0, j = 0; j < len; i++, j += 4)
output[i] = ((UINT4)input[j]) | (((UINT4)input[j+1]) << 8) | (((UINT4)input[j+2]) << 16) | (((UINT4)input[j+3]) << 24);
}
/* Note: Replace "for loop" with standard memcpy if possible. */
void CSHA::SHA_memcpy (POINTER output,POINTER input,unsigned int len)
{
unsigned int i;
for (i = 0; i < len; i++)
output[i] = input[i];
}
/* Note: Replace "for loop" with standard memset if possible. */
void CSHA::SHA_memset (POINTER output,int value,unsigned int len)
{
unsigned int i;
for (i = 0; i < len; i++)
((char *)output)[i] = (char)value;
}
/* Digests a string and prints the result. */
char* CSHA::SHAString (char *string)
{
SHA_CTX context;
unsigned char digest[16];
char output1[33];
static char output[33]={"\0"};
unsigned int len = strlen (string);
int i;
SHAInit (&context);
SHAUpdate (&context, (unsigned char*)string, len);
SHAFinal (digest, &context);
for (i = 0; i < 16; i++)
{
sprintf(&(output1[2*i]),"%02x",(unsigned char)digest[i]);
//sprintf(&(output1[2*i+1]),"%02x",(unsigned char)(digest[i]<<4));
}
for(i=0;i<32;i++)
output[i]=output1[i];
return output;
}
/* Digests a file and prints the result. */
//char* CSHA::SHAFile (CString filename)
CString CSHA::SHAFile (CString filename)
{
static char output[33]={"\0"};
CFile file;
CString result;
SHA_CTX context;
int len;
unsigned char buffer[1024], digest[16];
int i;
char output1[33];
//UINT aaa;
if (file.Open(filename,CFile::modeRead)==0)
{
//printf ("%s can't be opened\n", filename);
AfxMessageBox("open file error");
return "";
}
else
{
SHAInit(&context);
while (len = file.Read (buffer, 1024))//, 1024, file))
SHAUpdate(&context, buffer, len);
SHAFinal (digest, &context);
file.Close();
for (i = 0; i < 16; i++)
{
sprintf(&(output1[2*i]),"%02x",(unsigned char)digest[i]);
// sprintf(&(output1[2*i+1]),"%02x",(unsigned char)(digest[i]<<4));
}
for(i=0;i<32;i++)
output[i]=output1[i];
result = output;
return result;
}
}
char* CSHA::hmac_sha(char* text,char* key)
{
char digest[16];
char output1[32];
static char output[33]={"\0"};
SHA_CTX context;
unsigned char k_ipad[65]; /* inner padding -
* key XORd with ipad
*/
unsigned char k_opad[65]; /* outer padding -
* key XORd with opad
*/
unsigned char tk[16];
int i;
int text_len = strlen (text);
int key_len=strlen(key);
/* if key is longer than 64 bytes reset it to key=SHA(key) */
if (key_len > 64)
{
SHA_CTX tctx;
SHAInit(&tctx);
SHAUpdate(&tctx,(unsigned char*) key, key_len);
SHAFinal(tk, &tctx);
key = (char*)tk;
key_len = 16;
}
/*
* the HMAC_RIP transform looks like:
*
*RIP(K XOR opad, RIP(K XOR ipad, text))
*
* where K is an n byte key
* ipad is the byte 0x36 repeated 64 times
* opad is the byte 0x5c repeated 64 times
* and text is the data being protected
*/
/* start out by storing key in pads */
/*bzero( k_ipad, sizeof k_ipad);
bzero( k_opad, sizeof k_opad);
*/
for(i=0;i<65;i++)
k_ipad[i]=(unsigned char)0;
for(i=0;i<65;i++)
k_opad[i]=(unsigned char)0;
/*bcopy( key, k_ipad, key_len);
bcopy( key, k_opad, key_len);
*/
for(i=0;i<key_len;i++)
{
k_ipad[i]=(unsigned char)key[i];
k_opad[i]=(unsigned char)key[i];
}
/* XOR key with ipad and opad values */
for (i=0; i<64; i++)
{
k_ipad[i] ^= 0x36;
k_opad[i] ^= 0x5c;
}
/*
* perform inner RIP
*/
SHAInit(&context); /* init context for 1st
* pass */
SHAUpdate(&context, k_ipad, 64); /* start with inner pad */
SHAUpdate(&context, (unsigned char*)text, text_len); /* then text of datagram
*/
SHAFinal((unsigned char*)digest, &context); /* finish up 1st pass */
/*
* perform outer RIP
*/
SHAInit(&context); /* init context for 2nd
* pass */
SHAUpdate(&context, k_opad, 64); /* start with outer pad */
SHAUpdate(&context,(unsigned char*) digest, 16); /* then results of 1st
* hash */
SHAFinal((unsigned char*)digest, &context); /* finish up 2nd pass */
for (i = 0; i < 16; i++)
{
sprintf(&(output1[2*i]),"%02x",(unsigned char)digest[i]);
sprintf(&(output1[2*i+1]),"%02x",(unsigned char)(digest[i]<<4));
}
for(i=0;i<32;i++)
output[i]=output1[i];
return output;
}
/*extern "C" __declspec(dllexport) char* RIPString(char * pointer)
{
RIPEMD rip;
return rip.RIPString(pointer);
}
extern "C" __declspec(dllexport) CString RIPFile(CString filename)
{
RIPEMD rip;
return rip.RIPFile(filename);
}
extern "C" __declspec(dllexport) char* RIP_hmac(char* text, char* key)
{
RIPEMD rip;
return rip.hmac_md5(text,key);
}*/
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