static void Des3ProcessBlock(Des3* des, const byte* in, byte* out)
{
word32 l, r;
XMEMCPY(&l, in, sizeof(l));
XMEMCPY(&r, in + sizeof(l), sizeof(r));
#ifdef LITTLE_ENDIAN_ORDER
l = ByteReverseWord32(l);
r = ByteReverseWord32(r);
#endif
IPERM(&l,&r);
DesRawProcessBlock(&l, &r, des->key[0]);
DesRawProcessBlock(&r, &l, des->key[1]);
DesRawProcessBlock(&l, &r, des->key[2]);
FPERM(&l,&r);
#ifdef LITTLE_ENDIAN_ORDER
l = ByteReverseWord32(l);
r = ByteReverseWord32(r);
#endif
XMEMCPY(out, &r, sizeof(r));
XMEMCPY(out + sizeof(r), &l, sizeof(l));
}
static void DesProcessBlock(Des* des, const byte* in, byte* out)
{
word32 l, r;
memcpy(&l, in, sizeof(l));
memcpy(&r, in + sizeof(l), sizeof(r));
#ifdef LITTLE_ENDIAN_ORDER
l = ByteReverseWord32(l);
r = ByteReverseWord32(r);
#endif
IPERM(&l,&r);
DesRawProcessBlock(&l, &r, des->key);
FPERM(&l,&r);
#ifdef LITTLE_ENDIAN_ORDER
l = ByteReverseWord32(l);
r = ByteReverseWord32(r);
#endif
memcpy(out, &r, sizeof(r));
memcpy(out + sizeof(r), &l, sizeof(l));
}