C++ (Cpp) laneIndex Examples

Example #1

File: KeccakP-1600-times4-SIMD256.c Project: mjosaarinen/brutus

void KeccakP1600times4_AddBytes(void *states, unsigned int instanceIndex, const unsigned char *data, unsigned int offset, unsigned int length)
{
    unsigned int sizeLeft = length;
    unsigned int lanePosition = offset/SnP_laneLengthInBytes;
    unsigned int offsetInLane = offset%SnP_laneLengthInBytes;
    const unsigned char *curData = data;
    UINT64 *statesAsLanes = states;

    if ((sizeLeft > 0) && (offsetInLane != 0)) {
        unsigned int bytesInLane = SnP_laneLengthInBytes - offsetInLane;
        UINT64 lane = 0;
        if (bytesInLane > sizeLeft)
            bytesInLane = sizeLeft;
        memcpy((unsigned char*)&lane + offsetInLane, curData, bytesInLane);
        statesAsLanes[laneIndex(instanceIndex, lanePosition)] ^= lane;
        sizeLeft -= bytesInLane;
        lanePosition++;
        curData += bytesInLane;
    }

    while(sizeLeft >= SnP_laneLengthInBytes) {
        UINT64 lane = *((const UINT64*)curData);
        statesAsLanes[laneIndex(instanceIndex, lanePosition)] ^= lane;
        sizeLeft -= SnP_laneLengthInBytes;
        lanePosition++;
        curData += SnP_laneLengthInBytes;
    }

    if (sizeLeft > 0) {
        UINT64 lane = 0;
        memcpy(&lane, curData, sizeLeft);
        statesAsLanes[laneIndex(instanceIndex, lanePosition)] ^= lane;
    }
}

Example #2

File: KeccakP-1600-times4-SIMD256.c Project: mjosaarinen/brutus

void KeccakP1600times4_ExtractBytes(const void *states, unsigned int instanceIndex, unsigned char *data, unsigned int offset, unsigned int length)
{
    unsigned int sizeLeft = length;
    unsigned int lanePosition = offset/SnP_laneLengthInBytes;
    unsigned int offsetInLane = offset%SnP_laneLengthInBytes;
    unsigned char *curData = data;
    const UINT64 *statesAsLanes = states;

    if ((sizeLeft > 0) && (offsetInLane != 0)) {
        unsigned int bytesInLane = SnP_laneLengthInBytes - offsetInLane;
        if (bytesInLane > sizeLeft)
            bytesInLane = sizeLeft;
        memcpy( curData, ((unsigned char *)&statesAsLanes[laneIndex(instanceIndex, lanePosition)]) + offsetInLane, bytesInLane);
        sizeLeft -= bytesInLane;
        lanePosition++;
        curData += bytesInLane;
    }

    while(sizeLeft >= SnP_laneLengthInBytes) {
        *(UINT64*)curData = statesAsLanes[laneIndex(instanceIndex, lanePosition)];
        sizeLeft -= SnP_laneLengthInBytes;
        lanePosition++;
        curData += SnP_laneLengthInBytes;
    }

    if (sizeLeft > 0) {
        memcpy( curData, &statesAsLanes[laneIndex(instanceIndex, lanePosition)], sizeLeft);
    }
}

Example #3

File: DoubleKeccakF-1600.c Project: Janusz13/KeccakCodePackage

void KeccakF1600_Pl2_ComplementBitAll(void *states, unsigned int position)
{
    unsigned int lanePosition = position/(SnP_laneLengthInBytes*8);
    UINT64 bitMask = (UINT64)1 << (position%(SnP_laneLengthInBytes*8));
    UINT64 *statesAsLanes = states;

	statesAsLanes[laneIndex(0, lanePosition)] ^= bitMask;
	statesAsLanes[laneIndex(1, lanePosition)] ^= bitMask;
}

Example #4

File: KeccakP-1600-times4-SIMD256.c Project: mjosaarinen/brutus

void KeccakP1600times4_OverwriteWithZeroes(void *states, unsigned int instanceIndex, unsigned int byteCount)
{
    unsigned int sizeLeft = byteCount;
    unsigned int lanePosition = 0;
    UINT64 *statesAsLanes = states;

    while(sizeLeft >= SnP_laneLengthInBytes) {
        statesAsLanes[laneIndex(instanceIndex, lanePosition)] = 0;
        sizeLeft -= SnP_laneLengthInBytes;
        lanePosition++;
    }

    if (sizeLeft > 0) {
        memset(&statesAsLanes[laneIndex(instanceIndex, lanePosition)], 0, sizeLeft);
    }
}

Example #5

File: DoubleKeccakF-1600.c Project: Janusz13/KeccakCodePackage

void KeccakF1600_Pl2_ExtractAndXORBytes(const void *states, unsigned int instanceIndex,  unsigned char *data, unsigned int offset, unsigned int length)
{
    unsigned int sizeLeft = length;
    unsigned int lanePosition = offset/SnP_laneLengthInBytes;
    unsigned int offsetInLane = offset%SnP_laneLengthInBytes;
    unsigned char *curData = data;
    const UINT64 *statesAsLanes = states;

    if ((sizeLeft > 0) && (offsetInLane != 0)) {
        unsigned int bytesInLane = SnP_laneLengthInBytes - offsetInLane;
        UINT64 lane = statesAsLanes[laneIndex(instanceIndex, lanePosition)] >> (8 * offsetInLane);
        if (bytesInLane > sizeLeft)
            bytesInLane = sizeLeft;
        sizeLeft -= bytesInLane;
	    do {
	    	*(curData++) ^= (unsigned char)lane;
			lane >>= 8;
		} while ( --bytesInLane != 0);
        lanePosition++;
    }

Example #6

File: KeccakP-1600-times4-SIMD256.c Project: mjosaarinen/brutus

void KeccakP1600times4_ExtractAndAddBytes(const void *states, unsigned int instanceIndex, const unsigned char *input, unsigned char *output, unsigned int offset, unsigned int length)
{
    unsigned int sizeLeft = length;
    unsigned int lanePosition = offset/SnP_laneLengthInBytes;
    unsigned int offsetInLane = offset%SnP_laneLengthInBytes;
    const unsigned char *curInput = input;
    unsigned char *curOutput = output;
    const UINT64 *statesAsLanes = states;

    if ((sizeLeft > 0) && (offsetInLane != 0)) {
        unsigned int bytesInLane = SnP_laneLengthInBytes - offsetInLane;
        UINT64 lane = statesAsLanes[laneIndex(instanceIndex, lanePosition)] >> (8 * offsetInLane);
        if (bytesInLane > sizeLeft)
            bytesInLane = sizeLeft;
        sizeLeft -= bytesInLane;
        do {
            *(curOutput++) = *(curInput++) ^ (unsigned char)lane;
            lane >>= 8;
        } while ( --bytesInLane != 0);
        lanePosition++;
    }