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ring_hexl.cpp
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197 lines (185 loc) · 5.05 KB
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extern "C" {
#include "ring.h"
}
#include "hexl/hexl.hpp"
using namespace intel;
ring_mods
ring_mods_init(u64 *mods, u64 deg, u64 len)
{
void **pp = new void *[len];
ring_mods rop = { pp, mods, deg, len };
while (len--)
*pp++ = (void *)(new hexl::NTT(deg, *mods++));
return rop;
}
void
ring_mods_free(ring_mods mods)
{
void **pp = mods.precomp;
u64 len = mods.len;
while (len--)
delete (hexl::NTT *)*pp++;
delete mods.precomp;
}
u64
ring_coef_inv(u64 op, u64 mod)
{
return hexl::InverseMod(op, mod);
}
u64
ring_coef_mul(u64 op1, u64 op2, u64 mod)
{
return hexl::MultiplyMod(op1, op2, mod);
}
void
ring_poly_add(u64 *rop, u64 const *op1, u64 const *op2, ring_mods mods, u8 inc)
{
u64 *p = mods.mods;
u64 deg = mods.deg, len = mods.len;
u64 inc0 = ((inc >> 0) & 1) * deg;
u64 inc1 = ((inc >> 1) & 1) * deg;
u64 inc2 = ((inc >> 2) & 1) * deg;
while (len--) {
u64 mod = *p++;
if ((s64)mod > 0)
hexl::EltwiseAddMod(rop, op1, op2, deg, mod);
rop += inc0, op1 += inc1, op2 += inc2;
}
}
void
ring_poly_mul(u64 *rop, u64 const *op1, u64 const *op2, ring_mods mods, u8 inc)
{
u64 *p = mods.mods;
u64 deg = mods.deg, len = mods.len;
u64 inc0 = ((inc >> 0) & 1) * deg;
u64 inc1 = ((inc >> 1) & 1) * deg;
u64 inc2 = ((inc >> 2) & 1) * deg;
while (len--) {
u64 mod = *p++;
if ((s64)mod > 0)
hexl::EltwiseMultMod(rop, op1, op2, deg, mod, 1);
rop += inc0, op1 += inc1, op2 += inc2;
}
}
void
ring_poly_muladd(u64 *rop, u64 const *op1, u64 const *op2, u64 const *op3, ring_mods mods, u8 inc)
{
u64 buf[128];
u64 *p = mods.mods;
u64 deg = mods.deg, len = mods.len;
u64 dec0 = ((~inc >> 0) & 1) * deg;
u64 dec1 = ((~inc >> 1) & 1) * deg;
u64 dec2 = ((~inc >> 2) & 1) * deg;
u64 dec3 = ((~inc >> 3) & 1) * deg;
while (len--) {
u64 mod = *p++;
u64 i = deg / 128;
while (i--) {
if ((s64)mod > 0) {
hexl::EltwiseMultMod(buf, op1, op2, 128, mod, 1);
hexl::EltwiseAddMod(rop, buf, op3, 128, mod);
}
rop += 128, op1 += 128, op2 += 128, op3 += 128;
}
rop -= dec0, op1 -= dec1, op2 -= dec2, op3 -= dec3;
}
}
void
ring_poly_mulcadd(u64 *rop, u64 const *op1, u64 const *op2, u64 const *op3, ring_mods mods, u8 inc)
{
u64 *p = mods.mods;
u64 deg = mods.deg, len = mods.len;
u64 inc0 = ((inc >> 0) & 1) * deg;
u64 inc1 = ((inc >> 1) & 1) * deg;
u64 inc2 = ((inc >> 2) & 1);
u64 inc3 = ((inc >> 3) & 1) * deg;
while (len--) {
u64 mod = *p++;
if ((s64)mod > 0)
hexl::EltwiseFMAMod(rop, op1, *op2 % mod, op3, deg, mod, 1);
rop += inc0, op1 += inc1, op2 += inc2, op3 += inc3;
}
}
void
ring_poly_rndmulcadd(u64 *rop, f64 const *op1, u64 const *op2, u64 const *op3, ring_mods mods, u8 inc)
{
u64 *p = mods.mods;
u64 deg = mods.deg, len = mods.len;
u64 dec0 = ((~inc >> 0) & 1) * deg;
u64 dec1 = ((~inc >> 1) & 1) * deg;
u64 inc2 = (( inc >> 2) & 1);
u64 dec3 = ((~inc >> 3) & 1) * deg;
while (len--) {
u64 mod = *p++;
u64 c = *op2 % mod;
u64 i = deg / 8;
while (i--) {
if ((s64)mod > 0) {
rop[0] = hexl::AddUIntMod(hexl::MultiplyMod((u64)(op1[0] + 0.5), c, mod), op3[0], mod);
rop[1] = hexl::AddUIntMod(hexl::MultiplyMod((u64)(op1[1] + 0.5), c, mod), op3[1], mod);
rop[2] = hexl::AddUIntMod(hexl::MultiplyMod((u64)(op1[2] + 0.5), c, mod), op3[2], mod);
rop[3] = hexl::AddUIntMod(hexl::MultiplyMod((u64)(op1[3] + 0.5), c, mod), op3[3], mod);
rop[4] = hexl::AddUIntMod(hexl::MultiplyMod((u64)(op1[4] + 0.5), c, mod), op3[4], mod);
rop[5] = hexl::AddUIntMod(hexl::MultiplyMod((u64)(op1[5] + 0.5), c, mod), op3[5], mod);
rop[6] = hexl::AddUIntMod(hexl::MultiplyMod((u64)(op1[6] + 0.5), c, mod), op3[6], mod);
rop[7] = hexl::AddUIntMod(hexl::MultiplyMod((u64)(op1[7] + 0.5), c, mod), op3[7], mod);
}
rop += 8, op1 += 8, op3 += 8;
}
rop -= dec0, op1 -= dec1, op2 += inc2, op3 -= dec3;
}
}
void
ring_poly_divcadd(f64 *rop, u64 const *op1, u64 const *op2, f64 const *op3, u64 deg, u64 len, u8 inc)
{
u64 dec0 = ((~inc >> 0) & 1) * deg;
u64 dec1 = ((~inc >> 1) & 1) * deg;
u64 inc2 = (( inc >> 2) & 1);
u64 dec3 = ((~inc >> 3) & 1) * deg;
while (len--) {
f64 c = (f64)*op2;
u64 i = deg / 8;
while (i--) {
rop[0] = (f64)op1[0] / c + op3[0];
rop[1] = (f64)op1[1] / c + op3[1];
rop[2] = (f64)op1[2] / c + op3[2];
rop[3] = (f64)op1[3] / c + op3[3];
rop[4] = (f64)op1[4] / c + op3[4];
rop[5] = (f64)op1[5] / c + op3[5];
rop[6] = (f64)op1[6] / c + op3[6];
rop[7] = (f64)op1[7] / c + op3[7];
rop += 8, op1 += 8, op3 += 8;
}
rop -= dec0, op1 -= dec1, op2 += inc2, op3 -= dec3;
}
}
void
ring_poly_nttbwd(u64 *op, ring_mods mods)
{
u64 *p = mods.mods;
void **pp = mods.precomp;
u64 deg = mods.deg, len = mods.len;
while (len--) {
auto *ntt = (hexl::NTT *)*pp++;
u64 mod = *p++;
if ((s64)mod > 0)
// NOTE: in-place NTT internally
ntt->ComputeInverse(op, op, 1, 1);
op += deg;
}
}
void
ring_poly_nttfwd(u64 *op, ring_mods mods)
{
u64 *p = mods.mods;
void **pp = mods.precomp;
u64 deg = mods.deg, len = mods.len;
while (len--) {
auto *ntt = (hexl::NTT *)*pp++;
u64 mod = *p++;
if ((s64)mod > 0)
// NOTE: in-place NTT internally
ntt->ComputeForward(op, op, 1, 1);
op += deg;
}
}