void RC2::Enc::ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const
{
word16 R0, R1, R2, R3;
Block::Get(inBlock)(R0)(R1)(R2)(R3);
for (int i = 0; i < 16; i++)
{
R0 += (R1 & ~R3) + (R2 & R3) + K[4*i+0];
R0 = rotlFixed(R0, 1);
R1 += (R2 & ~R0) + (R3 & R0) + K[4*i+1];
R1 = rotlFixed(R1, 2);
R2 += (R3 & ~R1) + (R0 & R1) + K[4*i+2];
R2 = rotlFixed(R2, 3);
R3 += (R0 & ~R2) + (R1 & R2) + K[4*i+3];
R3 = rotlFixed(R3, 5);
if (i == 4 || i == 10)
{
R0 = word16(R0 + K[R3 & 63]);
R1 = word16(R1 + K[R0 & 63]);
R2 = word16(R2 + K[R1 & 63]);
R3 = word16(R3 + K[R2 & 63]);
}
}
Block::Put(xorBlock, outBlock)(R0)(R1)(R2)(R3);
}
void Twofish::SetKey(const byte* userKey, word32 keylen, CipherDir /*dummy*/)
{
unsigned int len = (keylen <= 16 ? 2 : (keylen <= 24 ? 3 : 4));
word32 key[8];
GetUserKey(LittleEndianOrder, key, len*2, userKey, keylen);
unsigned int i;
for (i=0; i<40; i+=2) {
word32 a = h(i, key, len);
word32 b = rotlFixed(h(i+1, key+1, len), 8);
k_[i] = a+b;
k_[i+1] = rotlFixed(a+2*b, 9);
}
word32 svec[8];
for (i=0; i<len; i++)
svec[2*(len-i-1)] = ReedSolomon(key[2*i+1], key[2*i]);
for (i=0; i<256; i++) {
word32 t = h0(i, svec, len);
s_[0][i] = mds_[0][GETBYTE(t, 0)];
s_[1][i] = mds_[1][GETBYTE(t, 1)];
s_[2][i] = mds_[2][GETBYTE(t, 2)];
s_[3][i] = mds_[3][GETBYTE(t, 3)];
}
}
void RC6::Dec::ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const
{
const RC6_WORD *sptr = sTable.end();
RC6_WORD a, b, c, d, t, u;
Block::Get(inBlock)(a)(b)(c)(d);
sptr -= 2;
c -= sptr[1];
a -= sptr[0];
for (unsigned i=0; i < r; i++)
{
sptr -= 2;
t = a; a = d; d = c; c = b; b = t;
u = rotlFixed(d*(2*d+1), 5);
t = rotlFixed(b*(2*b+1), 5);
c = rotrMod(c-sptr[1], t) ^ u;
a = rotrMod(a-sptr[0], u) ^ t;
}
sptr -= 2;
d -= sTable[1];
b -= sTable[0];
Block::Put(xorBlock, outBlock)(a)(b)(c)(d);
}
static INLINE void FPERM(word32* left, word32* right)
{
word32 work;
*right = rotrFixed(*right, 1U);
work = (*left ^ *right) & 0xaaaaaaaa;
*right ^= work;
*left = rotrFixed(*left^work, 9U);
work = (*left ^ *right) & 0x00ff00ff;
*right ^= work;
*left = rotlFixed(*left^work, 6U);
work = (*left ^ *right) & 0x33333333;
*right ^= work;
*left = rotlFixed(*left^work, 18U);
work = (*left ^ *right) & 0xffff0000;
*right ^= work;
*left = rotlFixed(*left^work, 20U);
work = (*left ^ *right) & 0xf0f0f0f0;
*right ^= work;
*left = rotrFixed(*left^work, 4U);
}
void CData::CryptBlock(Byte *buf, bool encrypt)
{
Byte inBuf[16];
UInt32 A, B, C, D, T, TA, TB;
A = GetUi32(buf + 0) ^ Keys[0];
B = GetUi32(buf + 4) ^ Keys[1];
C = GetUi32(buf + 8) ^ Keys[2];
D = GetUi32(buf + 12) ^ Keys[3];
if (!encrypt)
memcpy(inBuf, buf, sizeof(inBuf));
for (int i = 0; i < kNumRounds; i++)
{
UInt32 key = Keys[(encrypt ? i : (kNumRounds - 1 - i)) & 3];
T = ((C + rotlFixed(D, 11)) ^ key);
TA = A ^ SubstLong(T);
T = ((D ^ rotlFixed(C, 17)) + key);
TB = B ^ SubstLong(T);
A = C;
B = D;
C = TA;
D = TB;
}
SetUi32(buf + 0, C ^ Keys[0]);
SetUi32(buf + 4, D ^ Keys[1]);
SetUi32(buf + 8, A ^ Keys[2]);
SetUi32(buf + 12, B ^ Keys[3]);
UpdateKeys(encrypt ? buf : inBuf);
}
void RC6Encryption::ProcessBlock(const byte *in, byte *out) const
{
const RC6_WORD *sptr = sTable;
RC6_WORD a, b, c, d, t, u;
GetBlockLittleEndian(in, a, b, c, d);
b += sptr[0];
d += sptr[1];
sptr += 2;
for(unsigned i=0; i<r; i++)
{
t = rotlFixed(b*(2*b+1), 5);
u = rotlFixed(d*(2*d+1), 5);
a = rotlMod(a^t,u) + sptr[0];
c = rotlMod(c^u,t) + sptr[1];
t = a; a = b; b = c; c = d; d = t;
sptr += 2;
}
a += sptr[0];
c += sptr[1];
PutBlockLittleEndian(out, a, b, c, d);
}
static inline void IPERM(word32& left, word32& right)
{
word32 work;
right = rotlFixed(right, 4U);
work = (left ^ right) & 0xf0f0f0f0;
left ^= work;
right = rotrFixed(right^work, 20U);
work = (left ^ right) & 0xffff0000;
left ^= work;
right = rotrFixed(right^work, 18U);
work = (left ^ right) & 0x33333333;
left ^= work;
right = rotrFixed(right^work, 6U);
work = (left ^ right) & 0x00ff00ff;
left ^= work;
right = rotlFixed(right^work, 9U);
work = (left ^ right) & 0xaaaaaaaa;
left = rotlFixed(left^work, 1U);
right ^= work;
}
void CRC2Encryptor::Transform(TDes8& aBlock)
{
assert(aBlock.Size() == KRC2BlockBytes);
TUint16 R0, R1, R2, R3;
GetBlockLittleEndian((TUint8*)&aBlock[0], R0, R1, R2, R3);
TInt i = 0;
for (; i < 16; i++)
{
R0 += (R1 & ~R3) + (R2 & R3) + iK[4*i+0];
R0 = rotlFixed(R0, 1);
R1 += (R2 & ~R0) + (R3 & R0) + iK[4*i+1];
R1 = rotlFixed(R1, 2);
R2 += (R3 & ~R1) + (R0 & R1) + iK[4*i+2];
R2 = rotlFixed(R2, 3);
R3 += (R0 & ~R2) + (R1 & R2) + iK[4*i+3];
R3 = rotlFixed(R3, 5);
if (i == 4 || i == 10)
{
R0 += iK[R3 & 63];
R1 += iK[R0 & 63];
R2 += iK[R1 & 63];
R3 += iK[R2 & 63];
}
}
PutBlockLittleEndian((TUint8*)&aBlock[0], R0, R1, R2, R3);
}
void RC6Decryption::ProcessBlock(const byte *in, byte *out) const
{
const RC6_WORD *sptr = sTable+sTable.size;
RC6_WORD a, b, c, d, t, u;
GetBlockLittleEndian(in, a, b, c, d);
sptr -= 2;
c -= sptr[1];
a -= sptr[0];
for (unsigned i=0; i < r; i++)
{
sptr -= 2;
t = a; a = d; d = c; c = b; b = t;
u = rotlFixed(d*(2*d+1), 5);
t = rotlFixed(b*(2*b+1), 5);
c = rotrMod(c-sptr[1], t) ^ u;
a = rotrMod(a-sptr[0], u) ^ t;
}
sptr -= 2;
d -= sTable[1];
b -= sTable[0];
PutBlockLittleEndian(out, a, b, c, d);
}
void RC6::Enc::ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const
{
const RC6_WORD *sptr = sTable;
RC6_WORD a, b, c, d, t, u;
Block::Get(inBlock)(a)(b)(c)(d);
b += sptr[0];
d += sptr[1];
sptr += 2;
for(unsigned i=0; i<r; i++)
{
t = rotlFixed(b*(2*b+1), 5);
u = rotlFixed(d*(2*d+1), 5);
a = rotlMod(a^t,u) + sptr[0];
c = rotlMod(c^u,t) + sptr[1];
t = a; a = b; b = c; c = d; d = t;
sptr += 2;
}
a += sptr[0];
c += sptr[1];
Block::Put(xorBlock, outBlock)(a)(b)(c)(d);
}
void Serpent_KeySchedule(word32 *k, unsigned int rounds, const byte *userKey, size_t keylen)
{
FixedSizeSecBlock<word32, 8> k0;
GetUserKey(LITTLE_ENDIAN_ORDER, k0.begin(), 8, userKey, keylen);
if (keylen < 32)
k0[keylen/4] |= word32(1) << ((keylen%4)*8);
word32 t = k0[7];
unsigned int i;
for (i = 0; i < 8; ++i)
k[i] = k0[i] = t = rotlFixed(k0[i] ^ k0[(i+3)%8] ^ k0[(i+5)%8] ^ t ^ 0x9e3779b9 ^ i, 11);
for (i = 8; i < 4*(rounds+1); ++i)
k[i] = t = rotlFixed(k[i-8] ^ k[i-5] ^ k[i-3] ^ t ^ 0x9e3779b9 ^ i, 11);
k -= 20;
word32 a,b,c,d,e;
for (i=0; i<rounds/8; i++)
{
afterS2(LK); afterS2(S3); afterS3(SK);
afterS1(LK); afterS1(S2); afterS2(SK);
afterS0(LK); afterS0(S1); afterS1(SK);
beforeS0(LK); beforeS0(S0); afterS0(SK);
k += 8*4;
afterS6(LK); afterS6(S7); afterS7(SK);
afterS5(LK); afterS5(S6); afterS6(SK);
afterS4(LK); afterS4(S5); afterS5(SK);
afterS3(LK); afterS3(S4); afterS4(SK);
}
afterS2(LK); afterS2(S3); afterS3(SK);
}
void Square::Base::UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs &)
{
AssertValidKeyLength(length);
static const word32 offset[ROUNDS] = {
0x01000000UL, 0x02000000UL, 0x04000000UL, 0x08000000UL,
0x10000000UL, 0x20000000UL, 0x40000000UL, 0x80000000UL,
};
GetUserKey(BIG_ENDIAN_ORDER, m_roundkeys.data(), KEYLENGTH/4, userKey, KEYLENGTH);
/* apply the key evolution function */
for (int i = 1; i < ROUNDS+1; i++)
{
roundkeys(i, 0) = roundkeys(i-1, 0) ^ rotlFixed(roundkeys(i-1, 3), 8U) ^ offset[i-1];
roundkeys(i, 1) = roundkeys(i-1, 1) ^ roundkeys(i, 0);
roundkeys(i, 2) = roundkeys(i-1, 2) ^ roundkeys(i, 1);
roundkeys(i, 3) = roundkeys(i-1, 3) ^ roundkeys(i, 2);
}
/* produce the round keys */
if (IsForwardTransformation())
{
for (int i = 0; i < ROUNDS; i++)
SquareTransform (roundkeys4(i), roundkeys4(i));
}
else
{
for (int i = 0; i < ROUNDS/2; i++)
for (int j = 0; j < 4; j++)
std::swap(roundkeys(i, j), roundkeys(ROUNDS-i, j));
SquareTransform (roundkeys4(ROUNDS), roundkeys4(ROUNDS));
}
}
void serpent_set_key(const unsigned __int8 userKey[], int keylen, unsigned __int8 *ks)
{
unsigned __int32 a,b,c,d,e;
unsigned __int32 *k = (unsigned __int32 *)ks;
unsigned __int32 t;
int i;
for (i = 0; i < keylen / (int)sizeof(__int32); i++)
k[i] = LE32(((unsigned __int32*)userKey)[i]);
if (keylen < 32)
k[keylen/4] |= (unsigned __int32)1 << ((keylen%4)*8);
k += 8;
t = k[-1];
for (i = 0; i < 132; ++i)
k[i] = t = rotlFixed(k[i-8] ^ k[i-5] ^ k[i-3] ^ t ^ 0x9e3779b9 ^ i, 11);
k -= 20;
for (i=0; i<4; i++)
{
LKf (k, 20, &a, &e, &b, &d); S3f (&a, &e, &b, &d, &c); SKf (k, 16, &e, &b, &d, &c);
LKf (k, 24, &c, &b, &a, &e); S2f (&c, &b, &a, &e, &d); SKf (k, 20, &a, &e, &b, &d);
LKf (k, 28, &b, &e, &c, &a); S1f (&b, &e, &c, &a, &d); SKf (k, 24, &c, &b, &a, &e);
LKf (k, 32, &a, &b, &c, &d); S0f (&a, &b, &c, &d, &e); SKf (k, 28, &b, &e, &c, &a);
k += 8*4;
LKf (k, 4, &a, &c, &d, &b); S7f (&a, &c, &d, &b, &e); SKf (k, 0, &d, &e, &b, &a);
LKf (k, 8, &a, &c, &b, &e); S6f (&a, &c, &b, &e, &d); SKf (k, 4, &a, &c, &d, &b);
LKf (k, 12, &b, &a, &e, &c); S5f (&b, &a, &e, &c, &d); SKf (k, 8, &a, &c, &b, &e);
LKf (k, 16, &e, &b, &d, &c); S4f (&e, &b, &d, &c, &a); SKf (k, 12, &b, &a, &e, &c);
}
LKf (k, 20, &a, &e, &b, &d); S3f (&a, &e, &b, &d, &c); SKf (k, 16, &e, &b, &d, &c);
}
void RC6::Base::UncheckedSetKey(CipherDir direction, const byte *k, unsigned int keylen, unsigned int rounds)
{
AssertValidKeyLength(keylen);
AssertValidRounds(rounds);
r = rounds;
sTable.New(2*(r+2));
static const RC6_WORD MAGIC_P = 0xb7e15163L; // magic constant P for wordsize
static const RC6_WORD MAGIC_Q = 0x9e3779b9L; // magic constant Q for wordsize
static const int U=sizeof(RC6_WORD);
const unsigned int c = STDMAX((keylen+U-1)/U, 1U); // RC6 paper says c=1 if keylen==0
SecBlock<RC6_WORD> l(c);
GetUserKey(LITTLE_ENDIAN_ORDER, l.begin(), c, k, keylen);
sTable[0] = MAGIC_P;
for (unsigned j=1; j<sTable.size();j++)
sTable[j] = sTable[j-1] + MAGIC_Q;
RC6_WORD a=0, b=0;
const unsigned n = 3*STDMAX((unsigned int)sTable.size(), c);
for (unsigned h=0; h < n; h++)
{
a = sTable[h % sTable.size()] = rotlFixed((sTable[h % sTable.size()] + a + b), 3);
b = l[h % c] = rotlMod((l[h % c] + a + b), (a+b));
}
}
RC6Base::RC6Base(const byte *k, unsigned int keylen, unsigned int rounds)
: r(rounds), sTable((2*r)+4)
{
assert(keylen == KeyLength(keylen));
static const RC6_WORD MAGIC_P = 0xb7e15163L; // magic constant P for wordsize
static const RC6_WORD MAGIC_Q = 0x9e3779b9L; // magic constant Q for wordsize
static const int U=sizeof(RC6_WORD);
const unsigned int c=(keylen-1)/U + 1;
SecBlock<RC6_WORD> l(c);
GetUserKeyLittleEndian(l.ptr, c, k, keylen);
sTable[0] = MAGIC_P;
for (unsigned j=1; j<sTable.size;j++)
sTable[j] = sTable[j-1] + MAGIC_Q;
RC6_WORD a=0, b=0;
const unsigned n = 3*STDMAX(sTable.size,c);
for (unsigned h=0; h < n; h++)
{
a = sTable[h % sTable.size] = rotlFixed((sTable[h % sTable.size] + a + b), 3);
b = l[h % c] = rotlMod((l[h % c] + a + b), (a+b));
}
}
void Square::Base::UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs &)
{
AssertValidKeyLength(length);
static const word32 offset[ROUNDS] = {
0x01000000UL, 0x02000000UL, 0x04000000UL, 0x08000000UL,
0x10000000UL, 0x20000000UL, 0x40000000UL, 0x80000000UL,
};
GetUserKey(BIG_ENDIAN_ORDER, roundkeys[0], KEYLENGTH/4, userKey, KEYLENGTH);
/* apply the key evolution function */
for (int i = 1; i < ROUNDS+1; i++)
{
roundkeys[i][0] = roundkeys[i-1][0] ^ rotlFixed(roundkeys[i-1][3], 8U) ^ offset[i-1];
roundkeys[i][1] = roundkeys[i-1][1] ^ roundkeys[i][0];
roundkeys[i][2] = roundkeys[i-1][2] ^ roundkeys[i][1];
roundkeys[i][3] = roundkeys[i-1][3] ^ roundkeys[i][2];
}
/* produce the round keys */
if (IsForwardTransformation())
{
for (int i = 0; i < ROUNDS; i++)
SquareTransform (roundkeys[i], roundkeys[i]);
}
else
{
for (int i = 0; i < ROUNDS/2; i++)
for (int j = 0; j < 4; j++)
std::swap(roundkeys[i][j], roundkeys[ROUNDS-i][j]);
SquareTransform (roundkeys[ROUNDS], roundkeys[ROUNDS]);
}
}
static void Transform(Sha* sha)
{
word32 W[80], i;
/* Copy context->state[] to working vars */
word32 a = sha->digest[0];
word32 b = sha->digest[1];
word32 c = sha->digest[2];
word32 d = sha->digest[3];
word32 e = sha->digest[4];
for (i = 0; i < 16; i++)
W[i] = sha->buffer[i];
for (i = 16; i < 80; i++)
W[i] = rotlFixed(W[i-3]^W[i-8]^W[i-14]^W[i-16],1);
/* 4 rounds of 20 operations each. */
for (i = 0; i < 20; ) {
R0(a,b,c,d,e,i); i++;
R0(e,a,b,c,d,i); i++;
R0(d,e,a,b,c,i); i++;
R0(c,d,e,a,b,i); i++;
R0(b,c,d,e,a,i); i++;
}
for (i = 20; i < 40; ) {
R2(a,b,c,d,e,i); i++;
R2(e,a,b,c,d,i); i++;
R2(d,e,a,b,c,i); i++;
R2(c,d,e,a,b,i); i++;
R2(b,c,d,e,a,i); i++;
}
for (i = 40; i < 60; ) {
R3(a,b,c,d,e,i); i++;
R3(e,a,b,c,d,i); i++;
R3(d,e,a,b,c,i); i++;
R3(c,d,e,a,b,i); i++;
R3(b,c,d,e,a,i); i++;
}
for (i = 60; i < 80; ) {
R4(a,b,c,d,e,i); i++;
R4(e,a,b,c,d,i); i++;
R4(d,e,a,b,c,i); i++;
R4(c,d,e,a,b,i); i++;
R4(b,c,d,e,a,i); i++;
}
/* Add the working vars back into digest state[] */
sha->digest[0] += a;
sha->digest[1] += b;
sha->digest[2] += c;
sha->digest[3] += d;
sha->digest[4] += e;
}
void SAFER::Base::UncheckedSetKey(const byte *userkey_1, unsigned int length, const NameValuePairs ¶ms)
{
bool strengthened = Strengthened();
unsigned int nof_rounds = params.GetIntValueWithDefault(Name::Rounds(), length == 8 ? (strengthened ? 8 : 6) : 10);
const byte *userkey_2 = length == 8 ? userkey_1 : userkey_1 + 8;
keySchedule.New(1 + BLOCKSIZE * (1 + 2 * nof_rounds));
unsigned int i, j;
byte *key = keySchedule;
SecByteBlock ka(BLOCKSIZE + 1), kb(BLOCKSIZE + 1);
if (MAX_ROUNDS < nof_rounds)
nof_rounds = MAX_ROUNDS;
*key++ = (unsigned char)nof_rounds;
ka[BLOCKSIZE] = 0;
kb[BLOCKSIZE] = 0;
for (j = 0; j < BLOCKSIZE; j++)
{
ka[BLOCKSIZE] ^= ka[j] = rotlFixed(userkey_1[j], 5U);
kb[BLOCKSIZE] ^= kb[j] = *key++ = userkey_2[j];
}
for (i = 1; i <= nof_rounds; i++)
{
for (j = 0; j < BLOCKSIZE + 1; j++)
{
ka[j] = rotlFixed(ka[j], 6U);
kb[j] = rotlFixed(kb[j], 6U);
}
for (j = 0; j < BLOCKSIZE; j++)
if (strengthened)
*key++ = (ka[(j + 2 * i - 1) % (BLOCKSIZE + 1)]
+ exp_tab[exp_tab[18 * i + j + 1]]) & 0xFF;
else
*key++ = (ka[j] + exp_tab[exp_tab[18 * i + j + 1]]) & 0xFF;
for (j = 0; j < BLOCKSIZE; j++)
if (strengthened)
*key++ = (kb[(j + 2 * i) % (BLOCKSIZE + 1)]
+ exp_tab[exp_tab[18 * i + j + 10]]) & 0xFF;
else
*key++ = (kb[j] + exp_tab[exp_tab[18 * i + j + 10]]) & 0xFF;
}
}
SAFER::SAFER(const byte *userkey_1, const byte *userkey_2, unsigned nof_rounds, bool strengthened)
: keySchedule(1 + BLOCKSIZE * (1 + 2 * nof_rounds))
{
unsigned int i, j;
byte *key = keySchedule;
SecByteBlock ka(BLOCKSIZE + 1), kb(BLOCKSIZE + 1);
if (MAX_ROUNDS < nof_rounds)
nof_rounds = MAX_ROUNDS;
*key++ = (unsigned char)nof_rounds;
ka[BLOCKSIZE] = 0;
kb[BLOCKSIZE] = 0;
for (j = 0; j < BLOCKSIZE; j++)
{
ka[BLOCKSIZE] ^= ka[j] = rotlFixed(userkey_1[j], 5U);
kb[BLOCKSIZE] ^= kb[j] = *key++ = userkey_2[j];
}
for (i = 1; i <= nof_rounds; i++)
{
for (j = 0; j < BLOCKSIZE + 1; j++)
{
ka[j] = rotlFixed(ka[j], 6U);
kb[j] = rotlFixed(kb[j], 6U);
}
for (j = 0; j < BLOCKSIZE; j++)
if (strengthened)
*key++ = (ka[(j + 2 * i - 1) % (BLOCKSIZE + 1)]
+ exp_tab[exp_tab[18 * i + j + 1]]) & 0xFF;
else
*key++ = (ka[j] + exp_tab[exp_tab[18 * i + j + 1]]) & 0xFF;
for (j = 0; j < BLOCKSIZE; j++)
if (strengthened)
*key++ = (kb[(j + 2 * i) % (BLOCKSIZE + 1)]
+ exp_tab[exp_tab[18 * i + j + 10]]) & 0xFF;
else
*key++ = (kb[j] + exp_tab[exp_tab[18 * i + j + 10]]) & 0xFF;
}
}
static void LTf (uint32 *a, uint32 *b, uint32 *c, uint32 *d)
{
*a = rotlFixed(*a, 13);
*c = rotlFixed(*c, 3);
*d = rotlFixed(*d ^ *c ^ (*a << 3), 7);
*b = rotlFixed(*b ^ *a ^ *c, 1);
*a = rotlFixed(*a ^ *b ^ *d, 5);
*c = rotlFixed(*c ^ *d ^ (*b << 7), 22);
}
void serpent_set_key(const unsigned __int8 userKey[], int keylen, unsigned __int8 *ks)
{
unsigned __int32 a,b,c,d,e;
unsigned __int32 *k = (unsigned __int32 *)ks;
unsigned __int32 t;
int i;
for (i = 0; i < keylen / (int)sizeof(__int32); i++)
k[i] = LE32(((unsigned __int32*)userKey)[i]);
if (keylen < 32)
k[keylen/4] |= (unsigned __int32)1 << ((keylen%4)*8);
k += 8;
t = k[-1];
for (i = 0; i < 132; ++i)
k[i] = t = rotlFixed(k[i-8] ^ k[i-5] ^ k[i-3] ^ t ^ 0x9e3779b9 ^ i, 11);
k -= 20;
#define LK(r, a, b, c, d, e) {\
a = k[(8-r)*4 + 0]; \
b = k[(8-r)*4 + 1]; \
c = k[(8-r)*4 + 2]; \
d = k[(8-r)*4 + 3];}
#define SK(r, a, b, c, d, e) {\
k[(8-r)*4 + 4] = a; \
k[(8-r)*4 + 5] = b; \
k[(8-r)*4 + 6] = c; \
k[(8-r)*4 + 7] = d;} \
for (i=0; i<4; i++)
{
afterS2(LK); afterS2(S3); afterS3(SK);
afterS1(LK); afterS1(S2); afterS2(SK);
afterS0(LK); afterS0(S1); afterS1(SK);
beforeS0(LK); beforeS0(S0); afterS0(SK);
k += 8*4;
afterS6(LK); afterS6(S7); afterS7(SK);
afterS5(LK); afterS5(S6); afterS6(SK);
afterS4(LK); afterS4(S5); afterS5(SK);
afterS3(LK); afterS3(S4); afterS4(SK);
}
afterS2(LK); afterS2(S3); afterS3(SK);
}
void Serpent::Base::UncheckedSetKey(const byte *userKey, unsigned int keylen, const NameValuePairs &)
{
AssertValidKeyLength(keylen);
word32 *k = m_key;
GetUserKey(LITTLE_ENDIAN_ORDER, k, 8, userKey, keylen);
if (keylen < 32)
k[keylen/4] |= word32(1) << ((keylen%4)*8);
k += 8;
word32 t = k[-1];
signed int i;
for (i = 0; i < 132; ++i)
k[i] = t = rotlFixed(k[i-8] ^ k[i-5] ^ k[i-3] ^ t ^ 0x9e3779b9 ^ i, 11);
k -= 20;
#define LK(r, a, b, c, d, e) {\
a = k[(8-r)*4 + 0]; \
b = k[(8-r)*4 + 1]; \
c = k[(8-r)*4 + 2]; \
d = k[(8-r)*4 + 3];}
#define SK(r, a, b, c, d, e) {\
k[(8-r)*4 + 4] = a; \
k[(8-r)*4 + 5] = b; \
k[(8-r)*4 + 6] = c; \
k[(8-r)*4 + 7] = d;} \
word32 a,b,c,d,e;
for (i=0; i<4; i++)
{
afterS2(LK); afterS2(S3); afterS3(SK);
afterS1(LK); afterS1(S2); afterS2(SK);
afterS0(LK); afterS0(S1); afterS1(SK);
beforeS0(LK); beforeS0(S0); afterS0(SK);
k += 8*4;
afterS6(LK); afterS6(S7); afterS7(SK);
afterS5(LK); afterS5(S6); afterS6(SK);
afterS4(LK); afterS4(S5); afterS5(SK);
afterS3(LK); afterS3(S4); afterS4(SK);
}
afterS2(LK); afterS2(S3); afterS3(SK);
}
static void KeccakF1600(word64 *state)
{
{
word64 Aba, Abe, Abi, Abo, Abu;
word64 Aga, Age, Agi, Ago, Agu;
word64 Aka, Ake, Aki, Ako, Aku;
word64 Ama, Ame, Ami, Amo, Amu;
word64 Asa, Ase, Asi, Aso, Asu;
word64 BCa, BCe, BCi, BCo, BCu;
word64 Da, De, Di, Do, Du;
word64 Eba, Ebe, Ebi, Ebo, Ebu;
word64 Ega, Ege, Egi, Ego, Egu;
word64 Eka, Eke, Eki, Eko, Eku;
word64 Ema, Eme, Emi, Emo, Emu;
word64 Esa, Ese, Esi, Eso, Esu;
//copyFromState(A, state)
typedef BlockGetAndPut<word64, LittleEndian, true, true> Block;
Block::Get(state)(Aba)(Abe)(Abi)(Abo)(Abu)(Aga)(Age)(Agi)(Ago)(Agu)(Aka)(Ake)(Aki)(Ako)(Aku)(Ama)(Ame)(Ami)(Amo)(Amu)(Asa)(Ase)(Asi)(Aso)(Asu);
for( unsigned int round = 0; round < 24; round += 2 )
{
// prepareTheta
BCa = Aba^Aga^Aka^Ama^Asa;
BCe = Abe^Age^Ake^Ame^Ase;
BCi = Abi^Agi^Aki^Ami^Asi;
BCo = Abo^Ago^Ako^Amo^Aso;
BCu = Abu^Agu^Aku^Amu^Asu;
//thetaRhoPiChiIotaPrepareTheta(round , A, E)
Da = BCu^rotlFixed(BCe, 1);
De = BCa^rotlFixed(BCi, 1);
Di = BCe^rotlFixed(BCo, 1);
Do = BCi^rotlFixed(BCu, 1);
Du = BCo^rotlFixed(BCa, 1);
Aba ^= Da;
BCa = Aba;
Age ^= De;
BCe = rotlFixed(Age, 44);
Aki ^= Di;
BCi = rotlFixed(Aki, 43);
Amo ^= Do;
BCo = rotlFixed(Amo, 21);
Asu ^= Du;
BCu = rotlFixed(Asu, 14);
Eba = BCa ^((~BCe)& BCi );
Eba ^= (word64)KeccakF_RoundConstants[round];
Ebe = BCe ^((~BCi)& BCo );
Ebi = BCi ^((~BCo)& BCu );
Ebo = BCo ^((~BCu)& BCa );
Ebu = BCu ^((~BCa)& BCe );
Abo ^= Do;
BCa = rotlFixed(Abo, 28);
Agu ^= Du;
BCe = rotlFixed(Agu, 20);
Aka ^= Da;
BCi = rotlFixed(Aka, 3);
Ame ^= De;
BCo = rotlFixed(Ame, 45);
Asi ^= Di;
BCu = rotlFixed(Asi, 61);
Ega = BCa ^((~BCe)& BCi );
Ege = BCe ^((~BCi)& BCo );
Egi = BCi ^((~BCo)& BCu );
Ego = BCo ^((~BCu)& BCa );
Egu = BCu ^((~BCa)& BCe );
Abe ^= De;
BCa = rotlFixed(Abe, 1);
Agi ^= Di;
BCe = rotlFixed(Agi, 6);
Ako ^= Do;
BCi = rotlFixed(Ako, 25);
Amu ^= Du;
BCo = rotlFixed(Amu, 8);
Asa ^= Da;
BCu = rotlFixed(Asa, 18);
Eka = BCa ^((~BCe)& BCi );
Eke = BCe ^((~BCi)& BCo );
Eki = BCi ^((~BCo)& BCu );
Eko = BCo ^((~BCu)& BCa );
Eku = BCu ^((~BCa)& BCe );
Abu ^= Du;
BCa = rotlFixed(Abu, 27);
Aga ^= Da;
BCe = rotlFixed(Aga, 36);
Ake ^= De;
BCi = rotlFixed(Ake, 10);
Ami ^= Di;
BCo = rotlFixed(Ami, 15);
Aso ^= Do;
BCu = rotlFixed(Aso, 56);
Ema = BCa ^((~BCe)& BCi );
Eme = BCe ^((~BCi)& BCo );
Emi = BCi ^((~BCo)& BCu );
Emo = BCo ^((~BCu)& BCa );
Emu = BCu ^((~BCa)& BCe );
Abi ^= Di;
BCa = rotlFixed(Abi, 62);
Ago ^= Do;
BCe = rotlFixed(Ago, 55);
Aku ^= Du;
BCi = rotlFixed(Aku, 39);
Ama ^= Da;
BCo = rotlFixed(Ama, 41);
Ase ^= De;
BCu = rotlFixed(Ase, 2);
Esa = BCa ^((~BCe)& BCi );
Ese = BCe ^((~BCi)& BCo );
Esi = BCi ^((~BCo)& BCu );
Eso = BCo ^((~BCu)& BCa );
Esu = BCu ^((~BCa)& BCe );
// prepareTheta
BCa = Eba^Ega^Eka^Ema^Esa;
BCe = Ebe^Ege^Eke^Eme^Ese;
BCi = Ebi^Egi^Eki^Emi^Esi;
BCo = Ebo^Ego^Eko^Emo^Eso;
BCu = Ebu^Egu^Eku^Emu^Esu;
//thetaRhoPiChiIotaPrepareTheta(round+1, E, A)
Da = BCu^rotlFixed(BCe, 1);
De = BCa^rotlFixed(BCi, 1);
Di = BCe^rotlFixed(BCo, 1);
Do = BCi^rotlFixed(BCu, 1);
Du = BCo^rotlFixed(BCa, 1);
Eba ^= Da;
BCa = Eba;
Ege ^= De;
BCe = rotlFixed(Ege, 44);
Eki ^= Di;
BCi = rotlFixed(Eki, 43);
Emo ^= Do;
BCo = rotlFixed(Emo, 21);
Esu ^= Du;
BCu = rotlFixed(Esu, 14);
Aba = BCa ^((~BCe)& BCi );
Aba ^= (word64)KeccakF_RoundConstants[round+1];
Abe = BCe ^((~BCi)& BCo );
Abi = BCi ^((~BCo)& BCu );
Abo = BCo ^((~BCu)& BCa );
Abu = BCu ^((~BCa)& BCe );
Ebo ^= Do;
BCa = rotlFixed(Ebo, 28);
Egu ^= Du;
BCe = rotlFixed(Egu, 20);
Eka ^= Da;
BCi = rotlFixed(Eka, 3);
Eme ^= De;
BCo = rotlFixed(Eme, 45);
Esi ^= Di;
BCu = rotlFixed(Esi, 61);
Aga = BCa ^((~BCe)& BCi );
Age = BCe ^((~BCi)& BCo );
Agi = BCi ^((~BCo)& BCu );
Ago = BCo ^((~BCu)& BCa );
Agu = BCu ^((~BCa)& BCe );
Ebe ^= De;
BCa = rotlFixed(Ebe, 1);
Egi ^= Di;
BCe = rotlFixed(Egi, 6);
Eko ^= Do;
BCi = rotlFixed(Eko, 25);
Emu ^= Du;
BCo = rotlFixed(Emu, 8);
Esa ^= Da;
BCu = rotlFixed(Esa, 18);
Aka = BCa ^((~BCe)& BCi );
Ake = BCe ^((~BCi)& BCo );
Aki = BCi ^((~BCo)& BCu );
Ako = BCo ^((~BCu)& BCa );
Aku = BCu ^((~BCa)& BCe );
Ebu ^= Du;
BCa = rotlFixed(Ebu, 27);
Ega ^= Da;
BCe = rotlFixed(Ega, 36);
Eke ^= De;
BCi = rotlFixed(Eke, 10);
Emi ^= Di;
BCo = rotlFixed(Emi, 15);
Eso ^= Do;
BCu = rotlFixed(Eso, 56);
Ama = BCa ^((~BCe)& BCi );
Ame = BCe ^((~BCi)& BCo );
Ami = BCi ^((~BCo)& BCu );
Amo = BCo ^((~BCu)& BCa );
Amu = BCu ^((~BCa)& BCe );
Ebi ^= Di;
BCa = rotlFixed(Ebi, 62);
Ego ^= Do;
BCe = rotlFixed(Ego, 55);
Eku ^= Du;
BCi = rotlFixed(Eku, 39);
Ema ^= Da;
BCo = rotlFixed(Ema, 41);
Ese ^= De;
BCu = rotlFixed(Ese, 2);
Asa = BCa ^((~BCe)& BCi );
Ase = BCe ^((~BCi)& BCo );
Asi = BCi ^((~BCo)& BCu );
Aso = BCo ^((~BCu)& BCa );
Asu = BCu ^((~BCa)& BCe );
}
//copyToState(state, A)
Block::Put(NULL, state)(Aba)(Abe)(Abi)(Abo)(Abu)(Aga)(Age)(Agi)(Ago)(Agu)(Aka)(Ake)(Aki)(Ako)(Aku)(Ama)(Ame)(Ami)(Amo)(Amu)(Asa)(Ase)(Asi)(Aso)(Asu);
}
}