void serpent256_decrypt(const unsigned char *in, unsigned char *out, serpent256_key *key)
{
unsigned long b[4];
int i;
__movsb((unsigned char*)&b, in, SERPENT_BLOCK_SIZE);
for (i = 31; i >= 0; i--) {
if (i == 31) KXf(key->expkey, 32, b); else ITf(b);
sd_tab[i % 8](b); KXf(key->expkey, i, b);
}
__movsb(out, (const unsigned char*)&b, SERPENT_BLOCK_SIZE);
}
void serpent256_encrypt(const unsigned char *in, unsigned char *out, serpent256_key *key)
{
unsigned long b[4];
int i;
__movsb((unsigned char*)&b, in, SERPENT_BLOCK_SIZE);
for (i = 0; i < 32; i++) {
KXf(key->expkey, i, b); se_tab[i % 8](b);
if (i == 31) KXf(key->expkey, 32, b); else LTf(b);
}
__movsb(out, (const unsigned char*)&b, SERPENT_BLOCK_SIZE);
}
void serpent256_decrypt(const unsigned char *in, unsigned char *out, serpent256_key *key)
{
u32 b[4];
int i;
mincpy(b, in, SERPENT_BLOCK_SIZE);
for (i = 31; i >= 0; i--) {
if (i == 31) KXf(key->expkey, 32, b); else ITf(b);
sd_tab[i % 8](b); KXf(key->expkey, i, b);
}
mincpy(out, b, SERPENT_BLOCK_SIZE);
}
void serpent256_encrypt(const unsigned char *in, unsigned char *out, serpent256_key *key)
{
u32 b[4];
int i;
mincpy(b, in, SERPENT_BLOCK_SIZE);
for (i = 0; i < 32; i++) {
KXf(key->expkey, i, b); se_tab[i % 8](b);
if (i == 31) KXf(key->expkey, 32, b); else LTf(b);
}
mincpy(out, b, SERPENT_BLOCK_SIZE);
}
void serpent_encrypt(const unsigned __int8 *inBlock, unsigned __int8 *outBlock, unsigned __int8 *ks)
{
unsigned __int32 a, b, c, d, e;
unsigned int i=1;
const unsigned __int32 *k = (unsigned __int32 *)ks + 8;
unsigned __int32 *in = (unsigned __int32 *) inBlock;
unsigned __int32 *out = (unsigned __int32 *) outBlock;
a = LE32(in[0]);
b = LE32(in[1]);
c = LE32(in[2]);
d = LE32(in[3]);
do
{
KXf (k, 0, &a, &b, &c, &d); S0f (&a, &b, &c, &d, &e); LTf (&b, &e, &c, &a);
KXf (k, 4, &b, &e, &c, &a); S1f (&b, &e, &c, &a, &d); LTf (&c, &b, &a, &e);
KXf (k, 8, &c, &b, &a, &e); S2f (&c, &b, &a, &e, &d); LTf (&a, &e, &b, &d);
KXf (k, 12, &a, &e, &b, &d); S3f (&a, &e, &b, &d, &c); LTf (&e, &b, &d, &c);
KXf (k, 16, &e, &b, &d, &c); S4f (&e, &b, &d, &c, &a); LTf (&b, &a, &e, &c);
KXf (k, 20, &b, &a, &e, &c); S5f (&b, &a, &e, &c, &d); LTf (&a, &c, &b, &e);
KXf (k, 24, &a, &c, &b, &e); S6f (&a, &c, &b, &e, &d); LTf (&a, &c, &d, &b);
KXf (k, 28, &a, &c, &d, &b); S7f (&a, &c, &d, &b, &e);
if (i == 4)
break;
++i;
c = b;
b = e;
e = d;
d = a;
a = e;
k += 32;
LTf (&a,&b,&c,&d);
}
while (1);
KXf (k, 32, &d, &e, &b, &a);
out[0] = LE32(d);
out[1] = LE32(e);
out[2] = LE32(b);
out[3] = LE32(a);
}
void serpent_decrypt(const unsigned __int8 *inBlock, unsigned __int8 *outBlock, unsigned __int8 *ks)
{
unsigned __int32 a, b, c, d, e;
const unsigned __int32 *k = (unsigned __int32 *)ks + 104;
unsigned int i=4;
unsigned __int32 *in = (unsigned __int32 *) inBlock;
unsigned __int32 *out = (unsigned __int32 *) outBlock;
a = LE32(in[0]);
b = LE32(in[1]);
c = LE32(in[2]);
d = LE32(in[3]);
KXf (k, 32, &a, &b, &c, &d);
goto start;
do
{
c = b;
b = d;
d = e;
k -= 32;
beforeI7(ILT);
start:
beforeI7(I7); KXf (k, 28, &d, &a, &b, &e);
ILTf (&d, &a, &b, &e); afterI7(I6); KXf (k, 24, &a, &b, &c, &e);
ILTf (&a, &b, &c, &e); afterI6(I5); KXf (k, 20, &b, &d, &e, &c);
ILTf (&b, &d, &e, &c); afterI5(I4); KXf (k, 16, &b, &c, &e, &a);
ILTf (&b, &c, &e, &a); afterI4(I3); KXf (k, 12, &a, &b, &e, &c);
ILTf (&a, &b, &e, &c); afterI3(I2); KXf (k, 8, &b, &d, &e, &c);
ILTf (&b, &d, &e, &c); afterI2(I1); KXf (k, 4, &a, &b, &c, &e);
ILTf (&a, &b, &c, &e); afterI1(I0); KXf (k, 0, &a, &d, &b, &e);
}
while (--i != 0);
out[0] = LE32(a);
out[1] = LE32(d);
out[2] = LE32(b);
out[3] = LE32(e);
}
