void Keyak_ProcessAssociatedData(Keccak_DuplexInstance* duplex, const unsigned char *data, unsigned int dataSizeInBytes, int last, int bodyFollows)
{
unsigned int rhoInBytes = (duplex->rate-4)/8;
while(dataSizeInBytes > 0) {
unsigned int localSize;
if (Keccak_DuplexGetInputIndex(duplex) == rhoInBytes)
Keccak_Duplexing(duplex, 0, 0, 0, 0, 0x04); // 00
localSize = dataSizeInBytes;
if (localSize > (rhoInBytes - Keccak_DuplexGetInputIndex(duplex)))
localSize = rhoInBytes - Keccak_DuplexGetInputIndex(duplex);
Keccak_DuplexingFeedPartialInput(duplex, data, localSize);
data += localSize;
dataSizeInBytes -= localSize;
}
if (last) {
if (bodyFollows)
Keccak_Duplexing(duplex, 0, 0, 0, 0, 0x06); // 01
else
Keccak_Duplexing(duplex, 0, 0, 0, 0, 0x05); // 10
}
}
void Keyak_ProcessForget(Keccak_DuplexInstance* duplex)
{
unsigned int rhoInBytes = (duplex->rate-4)/8;
Keccak_Duplexing(duplex, 0, 0, 0, 0, 0x01);
Keccak_DuplexingOverwriteWithZeroes(duplex, rhoInBytes);
Keccak_Duplexing(duplex, 0, 0, 0, 0, 0x01);
}
void displayDuplexIntermediateValuesOne(FILE *f, unsigned int rate, unsigned int capacity)
{
Keccak_DuplexInstance duplex;
unsigned char input[512];
unsigned int inBitLen;
unsigned char output[512];
unsigned int outBitLen;
unsigned int i, j;
const unsigned int M = 239*251;
unsigned int x = 33;
Keccak_DuplexInitialize(&duplex, rate, capacity);
displayStateAsBytes(1, "Initial state", duplex.state);
for(i=0; i<=rate+120; i+=123) {
inBitLen = i;
if (inBitLen > (rate-2)) inBitLen = rate-2;
memset(input, 0, 512);
for(j=0; j<inBitLen; j++) {
x = (x*x) % M;
if ((x % 2) != 0)
input[j/8] |= 1 << (j%8);
}
{
char text[100];
sprintf(text, "Input (%d bits)", inBitLen);
displayBytes(1, text, input, (inBitLen+7)/8);
}
outBitLen = rate;
if ((inBitLen%8) == 0)
Keccak_Duplexing(&duplex, input, inBitLen/8, output, (outBitLen+7)/8, 0x01);
else
Keccak_Duplexing(&duplex, input, inBitLen/8, output, (outBitLen+7)/8, input[inBitLen/8] | (1 << (inBitLen%8)));
{
char text[100];
sprintf(text, "Output (%d bits)", outBitLen);
displayBytes(1, text, output, (outBitLen+7)/8);
}
}
}
void Keyak_ProcessCiphertext(Keccak_DuplexInstance* duplex, unsigned char *data, unsigned int dataSizeInBytes, int last)
{
unsigned int rhoInBytes = (duplex->rate-4)/8;
while(dataSizeInBytes > 0) {
unsigned int localSize;
if (Keccak_DuplexGetInputIndex(duplex) == rhoInBytes)
Keccak_Duplexing(duplex, 0, 0, 0, 0, 0x07); // 11
localSize = dataSizeInBytes;
if (localSize > (rhoInBytes - Keccak_DuplexGetInputIndex(duplex)))
localSize = rhoInBytes - Keccak_DuplexGetInputIndex(duplex);
Keccak_DuplexingGetFurtherOutputAndXOR(duplex, data, localSize);
Keccak_DuplexingFeedPartialInput(duplex, data, localSize);
data += localSize;
dataSizeInBytes -= localSize;
}
if (last)
Keccak_Duplexing(duplex, 0, 0, 0, 0, 0x05); // 10
}
void Keyak_ProcessTag(Keccak_DuplexInstance* duplex, unsigned char *tag, unsigned int tagSizeInBytes)
{
unsigned int rhoInBytes = (duplex->rate-4)/8;
while(tagSizeInBytes > 0) {
unsigned int localSize;
if (Keccak_DuplexGetInputIndex(duplex) == rhoInBytes)
Keccak_Duplexing(duplex, 0, 0, 0, 0, 0x02); // 0
localSize = tagSizeInBytes;
if (localSize > (rhoInBytes - Keccak_DuplexGetInputIndex(duplex)))
localSize = rhoInBytes - Keccak_DuplexGetInputIndex(duplex);
Keccak_DuplexingGetFurtherOutput(duplex, tag, localSize);
tag += localSize;
tagSizeInBytes -= localSize;
}
}
