pascalsha.cl

static inline uint rotr64( __const ulong w, __const unsigned c ) { return ( w >> c ) | ( w << ( 64 - c ) ); }
static inline uint ROTRIGHT( __const uint w, __const unsigned c) { return (w >> c) | (w << (32 - c) ); }
static inline uint ror( __const uint w, __const unsigned c) { return (w >> c) | (w << (32 - c) ); }
static inline uint SIG0( __const uint x) { return ROTRIGHT(x, 7) ^ ROTRIGHT(x, 18) ^ ((x) >> 3); }
static inline uint SIG1( __const uint x) { return ROTRIGHT(x, 17) ^ ROTRIGHT(x, 19) ^ ((x) >> 10); }
static inline uint SIG0c( __const uint x) { return ROTRIGHT(x, 7) ^ ROTRIGHT(x, 18) ^ ((x) >> 3); }
static inline uint SIG1c( __const uint x) { return ROTRIGHT(x, 17) ^ ROTRIGHT(x, 19) ^ ((x) >> 10); }

__constant static const uint k[64] = {
		0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
		0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
		0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
		0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
		0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
		0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
		0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
		0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
		0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
		0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
		0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
		0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
		0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
		0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
		0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
		0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
	};


__kernel void nonceGrind(__global uint *midstateIn, __global int *nonceOut) {
	uint buffer[16];
	uint midstate[8];
	
	
	uint nonce = (midstateIn[24] << 24) + (uint)get_global_id(0);
	// uint nonce = midstateIn[24];
	
	midstate[0] = midstateIn[16];
	midstate[1] = midstateIn[17];
	midstate[2] = midstateIn[18];
	midstate[3] = midstateIn[19];
	midstate[4] = midstateIn[20];
	midstate[5] = midstateIn[21];
	midstate[6] = midstateIn[22];
	midstate[7] = midstateIn[23];

	int j = 0;

	for (j = 0; j < 16; j++)
	{
		buffer[j] = midstateIn[j];
	}

	uint block[64];

	uint temp1;
	uint temp2;
	uint S0;
	uint S1;

	uint h0, h1, h2, h3, h4, h5, h6, h7;

	uint a, b, c, d, e, f, g, h;
	
		h0 = midstate[0];
		h1 = midstate[1];
		h2 = midstate[2];
		h3 = midstate[3];
		h4 = midstate[4];
		h5 = midstate[5];
		h6 = midstate[6];
		h7 = midstate[7];

		a = h0;
		b = h1;
		c = h2;
		d = h3;
		e = h4;
		f = h5;
		g = h6;
		h = h7;

		buffer[11] = nonce;
		// printf("Nonce being used: %d\n" + buffer[11]);

		for (j = 0; j < 16; j++)
		{
			block[j] = buffer[j];
		}

		for (j = 16; j < 64; j++)
		{
			block[j] = block[j - 16] + block[j - 7] + SIG1c(block[j - 2]) + SIG0c(block[j - 15]);
		}

		for (j = 0; j < 64; j++)
		{
			S1 = (ror(e, 6)) ^ (ror(e, 11)) ^ (ror(e, 25));
			temp1 = h + S1 + ((e & f) ^ ((~e) & g)) + k[j] + block[j];
			S0 = (ror(a, 2)) ^ (ror(a, 13)) ^ (ror(a, 22));
			temp2 = S0 + (((a & b) ^ (a & c) ^ (b & c)));

			h = g;
			g = f;
			f = e;
			e = d + temp1;
			d = c;
			c = b;
			b = a;
			a = temp1 + temp2;
		}

		h0 += a;
		h1 += b;
		h2 += c;
		h3 += d;
		h4 += e;
		h5 += f;
		h6 += g;
		h7 += h;

		block[0] = h0;
		block[1] = h1;
		block[2] = h2;
		block[3] = h3;
		block[4] = h4;
		block[5] = h5;
		block[6] = h6;
		block[7] = h7;
		block[8] = 0x80000000;
		block[9] = 0x00000000;
		block[10] = 0x00000000;
		block[11] = 0x00000000;
		block[12] = 0x00000000;
		block[13] = 0x00000000;
		block[14] = 0x00000000;
		block[15] = 0x00000100;

		h0 = a = 0x6a09e667;
		h1 = b = 0xbb67ae85;
		h2 = c = 0x3c6ef372;
		h3 = d = 0xa54ff53a;
		h4 = e = 0x510e527f;
		h5 = f = 0x9b05688c;
		h6 = g = 0x1f83d9ab;
		h7 = h = 0x5be0cd19;

		for (j = 16; j < 64; j++)
		{
			block[j] = block[j - 16] + block[j - 7] + SIG1c(block[j - 2]) + SIG0c(block[j - 15]);
		}

		for (j = 0; j < 64; j++)
		{
			S1 = (ror(e, 6)) ^ (ror(e, 11)) ^ (ror(e, 25));
			temp1 = h + S1 + ((e & f) ^ ((~e) & g)) + k[j] + block[j];
			S0 = (ror(a, 2)) ^ (ror(a, 13)) ^ (ror(a, 22));
			temp2 = S0 + (((a & b) ^ (a & c) ^ (b & c)));

			h = g;
			g = f;
			f = e;
			e = d + temp1;
			d = c;
			c = b;
			b = a;
			a = temp1 + temp2;
		}

		h0 += a;
		h1 += b;
		h2 += c;
		h3 += d;
		h4 += e;
		h5 += f;
		h6 += g;
		h7 += h;

		uint targetX = h0 & 0xFFFFFFFF;
		uint targetY = h1 & 0xF0000000;
		if (targetX == 0 && targetY == 0)
		{
			*nonceOut = nonce;
		}
}