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-rw-r--r--Modules/_sha3/keccak/KeccakSponge.c266
1 files changed, 0 insertions, 266 deletions
diff --git a/Modules/_sha3/keccak/KeccakSponge.c b/Modules/_sha3/keccak/KeccakSponge.c
deleted file mode 100644
index 1ca6bf0..0000000
--- a/Modules/_sha3/keccak/KeccakSponge.c
+++ /dev/null
@@ -1,266 +0,0 @@
-/*
-The Keccak sponge function, designed by Guido Bertoni, Joan Daemen,
-Michaël Peeters and Gilles Van Assche. For more information, feedback or
-questions, please refer to our website: http://keccak.noekeon.org/
-
-Implementation by the designers,
-hereby denoted as "the implementer".
-
-To the extent possible under law, the implementer has waived all copyright
-and related or neighboring rights to the source code in this file.
-http://creativecommons.org/publicdomain/zero/1.0/
-*/
-
-#include <string.h>
-#include "KeccakSponge.h"
-#include "KeccakF-1600-interface.h"
-#ifdef KeccakReference
-#include "displayIntermediateValues.h"
-#endif
-
-static int InitSponge(spongeState *state, unsigned int rate, unsigned int capacity)
-{
- if (rate+capacity != 1600)
- return 1;
- if ((rate <= 0) || (rate >= 1600) || ((rate % 64) != 0))
- return 1;
- KeccakInitialize();
- state->rate = rate;
- state->capacity = capacity;
- state->fixedOutputLength = 0;
- KeccakInitializeState(state->state);
- memset(state->dataQueue, 0, KeccakMaximumRateInBytes);
- state->bitsInQueue = 0;
- state->squeezing = 0;
- state->bitsAvailableForSqueezing = 0;
-
- return 0;
-}
-
-static void AbsorbQueue(spongeState *state)
-{
- /* state->bitsInQueue is assumed to be equal to state->rate */
- #ifdef KeccakReference
- displayBytes(1, "Block to be absorbed", state->dataQueue, state->rate/8);
- #endif
-#ifdef ProvideFast576
- if (state->rate == 576)
- KeccakAbsorb576bits(state->state, state->dataQueue);
- else
-#endif
-#ifdef ProvideFast832
- if (state->rate == 832)
- KeccakAbsorb832bits(state->state, state->dataQueue);
- else
-#endif
-#ifdef ProvideFast1024
- if (state->rate == 1024)
- KeccakAbsorb1024bits(state->state, state->dataQueue);
- else
-#endif
-#ifdef ProvideFast1088
- if (state->rate == 1088)
- KeccakAbsorb1088bits(state->state, state->dataQueue);
- else
-#endif
-#ifdef ProvideFast1152
- if (state->rate == 1152)
- KeccakAbsorb1152bits(state->state, state->dataQueue);
- else
-#endif
-#ifdef ProvideFast1344
- if (state->rate == 1344)
- KeccakAbsorb1344bits(state->state, state->dataQueue);
- else
-#endif
- KeccakAbsorb(state->state, state->dataQueue, state->rate/64);
- state->bitsInQueue = 0;
-}
-
-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;
-}
-
-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;
-}
-
-static int Squeeze(spongeState *state, unsigned char *output, unsigned long long outputLength)
-{
- unsigned long long i;
- unsigned int partialBlock;
-
- if (!state->squeezing)
- PadAndSwitchToSqueezingPhase(state);
- if ((outputLength % 8) != 0)
- return 1; /* Only multiple of 8 bits are allowed, truncation can be done at user level */
-
- i = 0;
- while(i < outputLength) {
- if (state->bitsAvailableForSqueezing == 0) {
- KeccakPermutation(state->state);
-#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
- }
- partialBlock = state->bitsAvailableForSqueezing;
- if ((unsigned long long)partialBlock > outputLength - i)
- partialBlock = (unsigned int)(outputLength - i);
- memcpy(output+i/8, state->dataQueue+(state->rate-state->bitsAvailableForSqueezing)/8, partialBlock/8);
- state->bitsAvailableForSqueezing -= partialBlock;
- i += partialBlock;
- }
- return 0;
-}
generated by cgit v0.12 at 2025-03-03 07:18:47 (GMT)