コード例 #1
0
ファイル: KeccakSponge.c プロジェクト: RSATom/Qt
static void PadAndSwitchToSqueezingPhase(spongeState *state)
{
    // Note: the bits are numbered from 0=LSB to 7=MSB
    if (state->bitsInQueue + 1 == state->rate) {
        state->dataQueue[state->bitsInQueue/8 ] |= 1 << (state->bitsInQueue % 8);
        AbsorbQueue(state);
        memset(state->dataQueue, 0, state->rate/8);
    }
    else {
        memset(state->dataQueue + (state->bitsInQueue+7)/8, 0, state->rate/8 - (state->bitsInQueue+7)/8);
        state->dataQueue[state->bitsInQueue/8 ] |= 1 << (state->bitsInQueue % 8);
    }
    state->dataQueue[(state->rate-1)/8] |= 1 << ((state->rate-1) % 8);
    AbsorbQueue(state);

    #ifdef KeccakReference
    displayText(1, "--- Switching to squeezing phase ---");
    #endif
#ifdef ProvideFast1024
    if (state->rate == 1024) {
        KeccakExtract1024bits(state->state, state->dataQueue);
        state->bitsAvailableForSqueezing = 1024;
    }
    else
#endif
    {
        KeccakExtract(state->state, state->dataQueue, state->rate/64);
        state->bitsAvailableForSqueezing = state->rate;
    }
    #ifdef KeccakReference
    displayBytes(1, "Block available for squeezing", state->dataQueue, state->bitsAvailableForSqueezing/8);
    #endif
    state->squeezing = 1;
}
コード例 #2
0
ファイル: KeccakSponge.c プロジェクト: RSATom/Qt
static int Absorb(spongeState *state, const unsigned char *data, unsigned long long databitlen)
{
    unsigned long long i, j, wholeBlocks;
    unsigned int partialBlock, partialByte;
    const unsigned char *curData;

    if ((state->bitsInQueue % 8) != 0)
        return 1; // Only the last call may contain a partial byte
    if (state->squeezing)
        return 1; // Too late for additional input

    i = 0;
    while(i < databitlen) {
        if ((state->bitsInQueue == 0) && (databitlen >= state->rate) && (i <= (databitlen-state->rate))) {
            wholeBlocks = (databitlen-i)/state->rate;
            curData = data+i/8;
#ifdef ProvideFast576
            if (state->rate == 576) {
                for(j=0; j<wholeBlocks; j++, curData+=576/8) {
                    #ifdef KeccakReference
                    displayBytes(1, "Block to be absorbed", curData, state->rate/8);
                    #endif
                    KeccakAbsorb576bits(state->state, curData);
                }
            }
            else
#endif
#ifdef ProvideFast832
            if (state->rate == 832) {
                for(j=0; j<wholeBlocks; j++, curData+=832/8) {
                    #ifdef KeccakReference
                    displayBytes(1, "Block to be absorbed", curData, state->rate/8);
                    #endif
                    KeccakAbsorb832bits(state->state, curData);
                }
            }
            else
#endif
#ifdef ProvideFast1024
            if (state->rate == 1024) {
                for(j=0; j<wholeBlocks; j++, curData+=1024/8) {
                    #ifdef KeccakReference
                    displayBytes(1, "Block to be absorbed", curData, state->rate/8);
                    #endif
                    KeccakAbsorb1024bits(state->state, curData);
                }
            }
            else
#endif
#ifdef ProvideFast1088
            if (state->rate == 1088) {
                for(j=0; j<wholeBlocks; j++, curData+=1088/8) {
                    #ifdef KeccakReference
                    displayBytes(1, "Block to be absorbed", curData, state->rate/8);
                    #endif
                    KeccakAbsorb1088bits(state->state, curData);
                }
            }
            else
#endif
#ifdef ProvideFast1152
            if (state->rate == 1152) {
                for(j=0; j<wholeBlocks; j++, curData+=1152/8) {
                    #ifdef KeccakReference
                    displayBytes(1, "Block to be absorbed", curData, state->rate/8);
                    #endif
                    KeccakAbsorb1152bits(state->state, curData);
                }
            }
            else
#endif
#ifdef ProvideFast1344
            if (state->rate == 1344) {
                for(j=0; j<wholeBlocks; j++, curData+=1344/8) {
                    #ifdef KeccakReference
                    displayBytes(1, "Block to be absorbed", curData, state->rate/8);
                    #endif
                    KeccakAbsorb1344bits(state->state, curData);
                }
            }
            else
#endif
            {
                for(j=0; j<wholeBlocks; j++, curData+=state->rate/8) {
                    #ifdef KeccakReference
                    displayBytes(1, "Block to be absorbed", curData, state->rate/8);
                    #endif
                    KeccakAbsorb(state->state, curData, state->rate/64);
                }
            }
            i += wholeBlocks*state->rate;
        }
        else {
            partialBlock = (unsigned int)(databitlen - i);
            if (partialBlock+state->bitsInQueue > state->rate)
                partialBlock = state->rate-state->bitsInQueue;
            partialByte = partialBlock % 8;
            partialBlock -= partialByte;
            memcpy(state->dataQueue+state->bitsInQueue/8, data+i/8, partialBlock/8);
            state->bitsInQueue += partialBlock;
            i += partialBlock;
            if (state->bitsInQueue == state->rate)
                AbsorbQueue(state);
            if (partialByte > 0) {
                unsigned char mask = (1 << partialByte)-1;
                state->dataQueue[state->bitsInQueue/8] = data[i/8] & mask;
                state->bitsInQueue += partialByte;
                i += partialByte;
            }
        }
    }
    return 0;
}
コード例 #3
0
ファイル: KeccakSponge.c プロジェクト: anzolaa1/cuda-keccak
HashReturn Update(hashState *state, const BitSequence *data, DataLength databitlen)
{
    DataLength i, j;
    DataLength partialBlock, partialByte, wholeBlocks;
    BitSequence lastByte;
    const BitSequence *curData;

    if ((state->bitsInQueue % 8) != 0)
        return FAIL; // Only the last call may contain a partial byte
    if (state->squeezing)
        return FAIL; // Too late for additional input

    i = 0;
    while(i < databitlen) {
        if ((state->bitsInQueue == 0) && (databitlen >= state->rate) && (i <= (databitlen-state->rate))) {
            wholeBlocks = (databitlen-i)/state->rate;
            curData = data+i/8;
#ifdef ProvideFast576
            if (state->rate == 576) {
                for(j=0; j<wholeBlocks; j++, curData+=576/8) {
                    #ifdef KeccakReference
                    displayBytes(1, "Data to be absorbed", curData, state->rate/8);
                    #endif
                    KeccakAbsorb576bits(state->state, curData);
                }
            }
            else
#endif
#ifdef ProvideFast832
            if (state->rate == 832) {
                for(j=0; j<wholeBlocks; j++, curData+=832/8) {
                    #ifdef KeccakReference
                    displayBytes(1, "Data to be absorbed", curData, state->rate/8);
                    #endif
                    KeccakAbsorb832bits(state->state, curData);
                }
            }
            else
#endif
#ifdef ProvideFast1024
            if (state->rate == 1024) {
                for(j=0; j<wholeBlocks; j++, curData+=1024/8) {
                    #ifdef KeccakReference
                    displayBytes(1, "Data to be absorbed", curData, state->rate/8);
                    #endif
                    KeccakAbsorb1024bits(state->state, curData);
                }
            }
            else
#endif
#ifdef ProvideFast1088
            if (state->rate == 1088) {
                for(j=0; j<wholeBlocks; j++, curData+=1088/8) {
                    #ifdef KeccakReference
                    displayBytes(1, "Data to be absorbed", curData, state->rate/8);
                    #endif
                    KeccakAbsorb1088bits(state->state, curData);
                }
            }
            else
#endif
#ifdef ProvideFast1152
            if (state->rate == 1152) {
                for(j=0; j<wholeBlocks; j++, curData+=1152/8) {
                    #ifdef KeccakReference
                    displayBytes(1, "Data to be absorbed", curData, state->rate/8);
                    #endif
                    KeccakAbsorb1152bits(state->state, curData);
                }
            }
            else
#endif
#ifdef ProvideFast1344
            if (state->rate == 1344) {
                for(j=0; j<wholeBlocks; j++, curData+=1344/8) {
                    #ifdef KeccakReference
                    displayBytes(1, "Data to be absorbed", curData, state->rate/8);
                    #endif
                    KeccakAbsorb1344bits(state->state, curData);
                }
            }
            else
#endif
            {
                for(j=0; j<wholeBlocks; j++, curData+=state->rate/8) {
                    #ifdef KeccakReference
                    displayBytes(1, "Data to be absorbed", curData, state->rate/8);
                    #endif
                    KeccakAbsorb(state->state, curData, state->rate/64);
                }
            }
            i += wholeBlocks*state->rate;
        }
        else {
            partialBlock = databitlen - i;
            if (partialBlock+state->bitsInQueue > state->rate)
                partialBlock = state->rate-state->bitsInQueue;
            partialByte = partialBlock % 8;
            partialBlock -= partialByte;
            memcpy(state->dataQueue+state->bitsInQueue/8, data+i/8, partialBlock/8);
            state->bitsInQueue += partialBlock;
            i += partialBlock;
            if (state->bitsInQueue == state->rate)
                AbsorbQueue(state);
            if (partialByte > 0) {
                // Align the last partial byte to the least significant bits
                lastByte = data[i/8] >> (8-partialByte);
                state->dataQueue[state->bitsInQueue/8] = lastByte;
                state->bitsInQueue += partialByte;
                i += partialByte;
            }
        }
    }