mirror of
https://codeberg.org/anoncontributorxmr/monero.git
synced 2024-12-23 21:57:46 +00:00
Updated paper references
This commit is contained in:
Sarang Noether
parent
277003f145
commit
45fd72b0d7
1 changed files with 22 additions and 24 deletions
|
|
@ -27,6 +27,7 @@
|
|||
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
//
|
||||
// Adapted from Java code by Sarang Noether
|
||||
// Paper references are to https://eprint.iacr.org/2017/1066 (revision 1 July 2018)
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <boost/thread/mutex.hpp>
|
||||
|
|
@ -521,6 +522,7 @@ Bulletproof bulletproof_PROVE(const rct::keyV &sv, const rct::keyV &gamma)
|
|||
}
|
||||
PERF_TIMER_STOP_BP(PROVE_v);
|
||||
|
||||
// PAPER LINES 41-42
|
||||
PERF_TIMER_START_BP(PROVE_aLaR);
|
||||
for (size_t j = 0; j < M; ++j)
|
||||
{
|
||||
|
|
@ -566,14 +568,14 @@ try_again:
|
|||
rct::key hash_cache = rct::hash_to_scalar(V);
|
||||
|
||||
PERF_TIMER_START_BP(PROVE_step1);
|
||||
// PAPER LINES 38-39
|
||||
// PAPER LINES 43-44
|
||||
rct::key alpha = rct::skGen();
|
||||
rct::key ve = vector_exponent(aL8, aR8);
|
||||
rct::key A;
|
||||
sc_mul(tmp.bytes, alpha.bytes, INV_EIGHT.bytes);
|
||||
rct::addKeys(A, ve, rct::scalarmultBase(tmp));
|
||||
|
||||
// PAPER LINES 40-42
|
||||
// PAPER LINES 45-47
|
||||
rct::keyV sL = rct::skvGen(MN), sR = rct::skvGen(MN);
|
||||
rct::key rho = rct::skGen();
|
||||
ve = vector_exponent(sL, sR);
|
||||
|
|
@ -581,7 +583,7 @@ try_again:
|
|||
rct::addKeys(S, ve, rct::scalarmultBase(rho));
|
||||
S = rct::scalarmultKey(S, INV_EIGHT);
|
||||
|
||||
// PAPER LINES 43-45
|
||||
// PAPER LINES 48-50
|
||||
rct::key y = hash_cache_mash(hash_cache, A, S);
|
||||
if (y == rct::zero())
|
||||
{
|
||||
|
|
@ -598,6 +600,7 @@ try_again:
|
|||
}
|
||||
|
||||
// Polynomial construction by coefficients
|
||||
// PAPER LINES 70-71
|
||||
rct::keyV l0 = vector_subtract(aL, z);
|
||||
const rct::keyV &l1 = sL;
|
||||
|
||||
|
|
@ -619,7 +622,7 @@ try_again:
|
|||
r0 = vector_add(r0, zero_twos);
|
||||
rct::keyV r1 = hadamard(yMN, sR);
|
||||
|
||||
// Polynomial construction before PAPER LINE 46
|
||||
// Polynomial construction before PAPER LINE 51
|
||||
rct::key t1_1 = inner_product(l0, r1);
|
||||
rct::key t1_2 = inner_product(l1, r0);
|
||||
rct::key t1;
|
||||
|
|
@ -629,7 +632,7 @@ try_again:
|
|||
PERF_TIMER_STOP_BP(PROVE_step1);
|
||||
|
||||
PERF_TIMER_START_BP(PROVE_step2);
|
||||
// PAPER LINES 47-48
|
||||
// PAPER LINES 52-53
|
||||
rct::key tau1 = rct::skGen(), tau2 = rct::skGen();
|
||||
|
||||
rct::key T1, T2;
|
||||
|
|
@ -643,7 +646,7 @@ try_again:
|
|||
ge_double_scalarmult_base_vartime_p3(&p3, tmp.bytes, &ge_p3_H, tmp2.bytes);
|
||||
ge_p3_tobytes(T2.bytes, &p3);
|
||||
|
||||
// PAPER LINES 49-51
|
||||
// PAPER LINES 54-56
|
||||
rct::key x = hash_cache_mash(hash_cache, z, T1, T2);
|
||||
if (x == rct::zero())
|
||||
{
|
||||
|
|
@ -652,7 +655,7 @@ try_again:
|
|||
goto try_again;
|
||||
}
|
||||
|
||||
// PAPER LINES 52-53
|
||||
// PAPER LINES 61-63
|
||||
rct::key taux;
|
||||
sc_mul(taux.bytes, tau1.bytes, x.bytes);
|
||||
rct::key xsq;
|
||||
|
|
@ -666,7 +669,7 @@ try_again:
|
|||
rct::key mu;
|
||||
sc_muladd(mu.bytes, x.bytes, rho.bytes, alpha.bytes);
|
||||
|
||||
// PAPER LINES 54-57
|
||||
// PAPER LINES 58-60
|
||||
rct::keyV l = l0;
|
||||
l = vector_add(l, vector_scalar(l1, x));
|
||||
rct::keyV r = r0;
|
||||
|
|
@ -685,7 +688,7 @@ try_again:
|
|||
CHECK_AND_ASSERT_THROW_MES(test_t == t, "test_t check failed");
|
||||
#endif
|
||||
|
||||
// PAPER LINES 32-33
|
||||
// PAPER LINE 6
|
||||
rct::key x_ip = hash_cache_mash(hash_cache, x, taux, mu, t);
|
||||
if (x_ip == rct::zero())
|
||||
{
|
||||
|
|
@ -720,20 +723,19 @@ try_again:
|
|||
PERF_TIMER_STOP_BP(PROVE_step3);
|
||||
|
||||
PERF_TIMER_START_BP(PROVE_step4);
|
||||
// PAPER LINE 13
|
||||
const rct::keyV *scale = &yinvpow;
|
||||
while (nprime > 1)
|
||||
{
|
||||
// PAPER LINE 15
|
||||
// PAPER LINE 20
|
||||
nprime /= 2;
|
||||
|
||||
// PAPER LINES 16-17
|
||||
// PAPER LINES 21-22
|
||||
PERF_TIMER_START_BP(PROVE_inner_product);
|
||||
rct::key cL = inner_product(slice(aprime, 0, nprime), slice(bprime, nprime, bprime.size()));
|
||||
rct::key cR = inner_product(slice(aprime, nprime, aprime.size()), slice(bprime, 0, nprime));
|
||||
PERF_TIMER_STOP_BP(PROVE_inner_product);
|
||||
|
||||
// PAPER LINES 18-19
|
||||
// PAPER LINES 23-24
|
||||
PERF_TIMER_START_BP(PROVE_LR);
|
||||
sc_mul(tmp.bytes, cL.bytes, x_ip.bytes);
|
||||
L[round] = cross_vector_exponent8(nprime, Gprime, nprime, Hprime, 0, aprime, 0, bprime, nprime, scale, &ge_p3_H, &tmp);
|
||||
|
|
@ -741,7 +743,7 @@ try_again:
|
|||
R[round] = cross_vector_exponent8(nprime, Gprime, 0, Hprime, nprime, aprime, nprime, bprime, 0, scale, &ge_p3_H, &tmp);
|
||||
PERF_TIMER_STOP_BP(PROVE_LR);
|
||||
|
||||
// PAPER LINES 21-22
|
||||
// PAPER LINES 25-27
|
||||
w[round] = hash_cache_mash(hash_cache, L[round], R[round]);
|
||||
if (w[round] == rct::zero())
|
||||
{
|
||||
|
|
@ -750,7 +752,7 @@ try_again:
|
|||
goto try_again;
|
||||
}
|
||||
|
||||
// PAPER LINES 24-25
|
||||
// PAPER LINES 29-30
|
||||
const rct::key winv = invert(w[round]);
|
||||
if (nprime > 1)
|
||||
{
|
||||
|
|
@ -760,7 +762,7 @@ try_again:
|
|||
PERF_TIMER_STOP_BP(PROVE_hadamard2);
|
||||
}
|
||||
|
||||
// PAPER LINES 28-29
|
||||
// PAPER LINES 33-34
|
||||
PERF_TIMER_START_BP(PROVE_prime);
|
||||
aprime = vector_add(vector_scalar(slice(aprime, 0, nprime), w[round]), vector_scalar(slice(aprime, nprime, aprime.size()), winv));
|
||||
bprime = vector_add(vector_scalar(slice(bprime, 0, nprime), winv), vector_scalar(slice(bprime, nprime, bprime.size()), w[round]));
|
||||
|
|
@ -771,7 +773,6 @@ try_again:
|
|||
}
|
||||
PERF_TIMER_STOP_BP(PROVE_step4);
|
||||
|
||||
// PAPER LINE 58 (with inclusions from PAPER LINE 8 and PAPER LINE 20)
|
||||
return Bulletproof(std::move(V), A, S, T1, T2, taux, mu, std::move(L), std::move(R), aprime[0], bprime[0], t);
|
||||
}
|
||||
|
||||
|
|
@ -805,7 +806,10 @@ struct proof_data_t
|
|||
size_t logM, inv_offset;
|
||||
};
|
||||
|
||||
/* Given a range proof, determine if it is valid */
|
||||
/* Given a range proof, determine if it is valid
|
||||
* This uses the method in PAPER LINES 95-105,
|
||||
* weighted across multiple proofs in a batch
|
||||
*/
|
||||
bool bulletproof_VERIFY(const std::vector<const Bulletproof*> &proofs)
|
||||
{
|
||||
init_exponents();
|
||||
|
|
@ -866,7 +870,6 @@ bool bulletproof_VERIFY(const std::vector<const Bulletproof*> &proofs)
|
|||
CHECK_AND_ASSERT_MES(rounds > 0, false, "Zero rounds");
|
||||
|
||||
PERF_TIMER_START_BP(VERIFY_line_21_22);
|
||||
// PAPER LINES 21-22
|
||||
// The inner product challenges are computed per round
|
||||
pd.w.resize(rounds);
|
||||
for (size_t i = 0; i < rounds; ++i)
|
||||
|
|
@ -924,7 +927,6 @@ bool bulletproof_VERIFY(const std::vector<const Bulletproof*> &proofs)
|
|||
rct::key proof8_A = rct::scalarmult8(proof.A);
|
||||
|
||||
PERF_TIMER_START_BP(VERIFY_line_61);
|
||||
// PAPER LINE 61
|
||||
sc_mulsub(m_y0.bytes, proof.taux.bytes, weight_y.bytes, m_y0.bytes);
|
||||
|
||||
const rct::keyV zpow = vector_powers(pd.z, M+3);
|
||||
|
|
@ -957,7 +959,6 @@ bool bulletproof_VERIFY(const std::vector<const Bulletproof*> &proofs)
|
|||
PERF_TIMER_STOP_BP(VERIFY_line_61rl_new);
|
||||
|
||||
PERF_TIMER_START_BP(VERIFY_line_62);
|
||||
// PAPER LINE 62
|
||||
multiexp_data.emplace_back(weight_z, proof8_A);
|
||||
sc_mul(tmp.bytes, pd.x.bytes, weight_z.bytes);
|
||||
multiexp_data.emplace_back(tmp, proof8_S);
|
||||
|
|
@ -968,7 +969,6 @@ bool bulletproof_VERIFY(const std::vector<const Bulletproof*> &proofs)
|
|||
CHECK_AND_ASSERT_MES(rounds > 0, false, "Zero rounds");
|
||||
|
||||
PERF_TIMER_START_BP(VERIFY_line_24_25);
|
||||
// Basically PAPER LINES 24-25
|
||||
// Compute the curvepoints from G[i] and H[i]
|
||||
rct::key yinvpow = rct::identity();
|
||||
rct::key ypow = rct::identity();
|
||||
|
|
@ -1005,7 +1005,6 @@ bool bulletproof_VERIFY(const std::vector<const Bulletproof*> &proofs)
|
|||
sc_mul(g_scalar.bytes, g_scalar.bytes, w_cache[i].bytes);
|
||||
sc_mul(h_scalar.bytes, h_scalar.bytes, w_cache[(~i) & (MN-1)].bytes);
|
||||
|
||||
// Adjust the scalars using the exponents from PAPER LINE 62
|
||||
sc_add(g_scalar.bytes, g_scalar.bytes, pd.z.bytes);
|
||||
CHECK_AND_ASSERT_MES(2+i/N < zpow.size(), false, "invalid zpow index");
|
||||
CHECK_AND_ASSERT_MES(i%N < twoN.size(), false, "invalid twoN index");
|
||||
|
|
@ -1038,7 +1037,6 @@ bool bulletproof_VERIFY(const std::vector<const Bulletproof*> &proofs)
|
|||
|
||||
PERF_TIMER_STOP_BP(VERIFY_line_24_25);
|
||||
|
||||
// PAPER LINE 26
|
||||
PERF_TIMER_START_BP(VERIFY_line_26_new);
|
||||
sc_muladd(z1.bytes, proof.mu.bytes, weight_z.bytes, z1.bytes);
|
||||
for (size_t i = 0; i < rounds; ++i)
|
||||
|
|
|
|||
Loading…
Reference in a new issue