Exemplo n.º 1
0
  static void sha256_block(sha256_ctx *p) {
    unsigned i;
    uint32_t s0, s1;
    uint32_t a, b, c, d, e, f, g, h;
    uint32_t t1, t2, maj, ch;

    for(i = 0; i < 16; i++) p->w[i] = LD32BE(p->in + i * 4);

    for(i = 16; i < 64; i++) {
      s0 = ROR32(p->w[i - 15],  7) ^ ROR32(p->w[i - 15], 18) ^ LSR32(p->w[i - 15],  3);
      s1 = ROR32(p->w[i -  2], 17) ^ ROR32(p->w[i -  2], 19) ^ LSR32(p->w[i -  2], 10);
      p->w[i] = p->w[i - 16] + s0 + p->w[i - 7] + s1;
    }

    a = p->h[0]; b = p->h[1]; c = p->h[2]; d = p->h[3];
    e = p->h[4]; f = p->h[5]; g = p->h[6]; h = p->h[7];

    for(i = 0; i < 64; i++) {
      s0 = ROR32(a, 2) ^ ROR32(a, 13) ^ ROR32(a, 22);
      maj = (a & b) ^ (a & c) ^ (b & c);
      t2 = s0 + maj;
      s1 = ROR32(e, 6) ^ ROR32(e, 11) ^ ROR32(e, 25);
      ch = (e & f) ^ (~e & g);
      t1 = h + s1 + ch + T_K[i] + p->w[i];

      h = g; g = f; f = e; e = d + t1;
      d = c; c = b; b = a; a = t1 + t2;
    }

    p->h[0] += a; p->h[1] += b; p->h[2] += c; p->h[3] += d;
    p->h[4] += e; p->h[5] += f; p->h[6] += g; p->h[7] += h;

    //next block
    p->inlen = 0;
  }
Exemplo n.º 2
0
void AES128::ShiftRows( unsigned char *m )
{
	register unsigned int * m32 = ( unsigned int * ) m;
	
	//  m32[0] = ROR32(m32[0], 0);
	m32[ 1 ] = ROR32( m32[ 1 ], 8 );
	m32[ 2 ] = ROR32( m32[ 2 ], 16 );
	m32[ 3 ] = ROR32( m32[ 3 ], 24 );
}
Exemplo n.º 3
0
void rc6DecryptBlock(Rc6Context *context, const uint8_t *input, uint8_t *output)
{
    uint_t i;
    uint32_t t;
    uint32_t u;

    //Load the 4 working registers with the ciphertext
    uint32_t a = LOAD32LE(input + 0);
    uint32_t b = LOAD32LE(input + 4);
    uint32_t c = LOAD32LE(input + 8);
    uint32_t d = LOAD32LE(input + 12);

    //First, update C and A
    c -= context->s[2 * RC6_NB_ROUNDS + 3];
    a -= context->s[2 * RC6_NB_ROUNDS + 2];

    //Apply 20 rounds
    for(i = RC6_NB_ROUNDS; i > 0; i--)
    {
        t = d;
        d = c;
        c = b;
        b = a;
        a = t;

        u = (d * (2 * d + 1));
        u = ROL32(u, 5);

        t = (b * (2 * b + 1));
        t = ROL32(t, 5);

        c -= context->s[2 * i + 1];
        c = ROR32(c, t % 32) ^ u;

        a -= context->s[2 * i];
        a = ROR32(a, u % 32) ^ t;
    }

    //Update D and B
    d -= context->s[1];
    b -= context->s[0];

    //The resulting value is the plaintext
    STORE32LE(a, output + 0);
    STORE32LE(b, output + 4);
    STORE32LE(c, output + 8);
    STORE32LE(d, output + 12);
}
Exemplo n.º 4
0
__inline 
VOID
HwMICBlock(
    PULONG  L,
    PULONG  R
    )
{
    *R ^= ROL32(*L, 17);
    *L += *R;
    *R ^= ((*L & 0xff00ff00) >> 8) | ((*L & 0x00ff00ff) << 8);
    *L += *R;
    *R ^= ROL32(*L, 3);
    *L += *R;
    *R ^= ROR32(*L, 2);
    *L += *R;
}
Exemplo n.º 5
0
static void s_vAppendByte(BYTE b)
{
	/* Append the byte to our word-sized buffer */
	M |= b << (8*nBytesInM);
	nBytesInM++;
	/* Process the word if it is full. */
	if (nBytesInM >= 4) {
		L ^= M;
		R ^= ROL32(L, 17);
		L += R;
		R ^= ((L & 0xff00ff00) >> 8) | ((L & 0x00ff00ff) << 8);
		L += R;
		R ^= ROL32(L, 3);
		L += R;
		R ^= ROR32(L, 2);
		L += R;
		/* Clear the buffer */
		M = 0;
		nBytesInM = 0;
	}
Exemplo n.º 6
0
VOID mic_appendByte(PMICHAEL_T pmic,UINT8 b )
{
	// Append the byte to our word-sized buffer
	pmic->M |= b << (8*pmic->nBytesInM);
	pmic->nBytesInM++;
	// Process the word if it is full.
	if( pmic->nBytesInM >= 4 )
	{
		pmic->L ^= pmic->M;
		pmic->R ^= ROL32( pmic->L, 17 );
		pmic->L += pmic->R;
		pmic->R ^= ((pmic->L & 0xff00ff00) >> 8) | ((pmic->L & 0x00ff00ff) << 8);
		pmic->L += pmic->R;
		pmic->R ^= ROL32( pmic->L, 3 );
		pmic->L += pmic->R;
		pmic->R ^= ROR32( pmic->L, 2 );
		pmic->L += pmic->R;
		// Clear the buffer
		pmic->M = 0;
		pmic->nBytesInM = 0;
	}
Exemplo n.º 7
0
static VOID s_vAppendByte (BYTE b)
{
    
    M |= b << (8*nBytesInM);
    nBytesInM++;
    
    if( nBytesInM >= 4 )
    {
        L ^= M;
        R ^= ROL32( L, 17 );
        L += R;
        R ^= ((L & 0xff00ff00) >> 8) | ((L & 0x00ff00ff) << 8);
        L += R;
        R ^= ROL32( L, 3 );
        L += R;
        R ^= ROR32( L, 2 );
        L += R;
        
        M = 0;
        nBytesInM = 0;
    }
Exemplo n.º 8
0
/*
	========================================================================

	Routine	Description:
		Calculate the MIC Value.

	Arguments:
      pAd		Pointer to our adapter
      uChar			Append this uChar

	Return Value:
		None

	IRQL = DISPATCH_LEVEL

	Note:

	========================================================================
*/
void RTMPTkipAppendByte(struct rt_tkip_key_info *pTkip, u8 uChar)
{
	/* Append the byte to our word-sized buffer */
	pTkip->M |= (uChar << (8 * pTkip->nBytesInM));
	pTkip->nBytesInM++;
	/* Process the word if it is full. */
	if (pTkip->nBytesInM >= 4) {
		pTkip->L ^= pTkip->M;
		pTkip->R ^= ROL32(pTkip->L, 17);
		pTkip->L += pTkip->R;
		pTkip->R ^=
		    ((pTkip->L & 0xff00ff00) >> 8) | ((pTkip->
						       L & 0x00ff00ff) << 8);
		pTkip->L += pTkip->R;
		pTkip->R ^= ROL32(pTkip->L, 3);
		pTkip->L += pTkip->R;
		pTkip->R ^= ROR32(pTkip->L, 2);
		pTkip->L += pTkip->R;
		/* Clear the buffer */
		pTkip->M = 0;
		pTkip->nBytesInM = 0;
	}
Exemplo n.º 9
0
/*
	========================================================================

	Routine	Description:
		Calculate the MIC Value.
		
	Arguments:
      pAd		Pointer to our adapter
      uChar			Append this uChar
		
	Return Value:
		None

	IRQL = DISPATCH_LEVEL
	
	Note:
		
	========================================================================
*/
VOID	RTMPTkipAppendByte( 
	IN	PTKIP_KEY_INFO	pTkip,	
	IN	UCHAR 			uChar)
{ 
	/* Append the byte to our word-sized buffer */
	pTkip->M |= (uChar << (8* pTkip->nBytesInM)); 
	pTkip->nBytesInM++; 
	/* Process the word if it is full. */
	if( pTkip->nBytesInM >= 4 ) 
	{ 
		pTkip->L ^= pTkip->M; 
		pTkip->R ^= ROL32( pTkip->L, 17 ); 
		pTkip->L += pTkip->R; 
		pTkip->R ^= ((pTkip->L & 0xff00ff00) >> 8) | ((pTkip->L & 0x00ff00ff) << 8); 
		pTkip->L += pTkip->R; 
		pTkip->R ^= ROL32( pTkip->L, 3 ); 
		pTkip->L += pTkip->R; 
		pTkip->R ^= ROR32( pTkip->L, 2 ); 
		pTkip->L += pTkip->R; 
		/* Clear the buffer */
		pTkip->M = 0; 
		pTkip->nBytesInM = 0; 
	} 
Exemplo n.º 10
0
VOID	RTMPTkipAppendByte(
	IN	PTKIP_KEY_INFO	pTkip,
	IN	UCHAR 			uChar)
{
	
	pTkip->M |= (uChar << (8* pTkip->nBytesInM));
	pTkip->nBytesInM++;
	
	if( pTkip->nBytesInM >= 4 )
	{
		pTkip->L ^= pTkip->M;
		pTkip->R ^= ROL32( pTkip->L, 17 );
		pTkip->L += pTkip->R;
		pTkip->R ^= ((pTkip->L & 0xff00ff00) >> 8) | ((pTkip->L & 0x00ff00ff) << 8);
		pTkip->L += pTkip->R;
		pTkip->R ^= ROL32( pTkip->L, 3 );
		pTkip->L += pTkip->R;
		pTkip->R ^= ROR32( pTkip->L, 2 );
		pTkip->L += pTkip->R;
		
		pTkip->M = 0;
		pTkip->nBytesInM = 0;
	}
Exemplo n.º 11
0
__INLINE void invShiftRows(Ipp32u* state)
{
   state[1] =  ROR32(state[1], 24);
   state[2] =  ROR32(state[2], 16);
   state[3] =  ROR32(state[3],  8);
}