luckyimnotanigger/mkp224o
1
0
Fork 0
mirror of https://github.com/cathugger/mkp224o.git synced 2025-06-01 04:12:14 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

add missing files, 2 stage batch pack

Browse source
This commit is contained in:
cathugger 2019-01-20 00:52:33 +02:00
parent f944bb64a2
commit 8f248cbd14
No known key found for this signature in database
GPG key ID: 9BADDA2DAF6F01A8
2 changed files with 50 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

24
ed25519/amd64-64-24k/ge25519_batchpack.c Normal file
View file

@ -0,0 +1,24 @@
#include "fe25519.h"
#include "ge25519.h"
// assumes inz[] points to things in in[]
// NOTE: leaves in unfinished state
void ge25519_batchpack_destructive_1(bytes32 out[], ge25519_p3 in[], fe25519 *inz[], fe25519 tmp[], size_t num)
{
fe25519 ty;
fe25519_batchinvert(inz, tmp, inz, num);
for (size_t i = 0; i < num; ++i) {
fe25519_mul(&ty, &in[i].y, &in[i].z);
fe25519_pack(out[i], &ty);
}
}
void ge25519_batchpack_destructive_finish(bytes32 out, ge25519_p3 *unf)
{
fe25519 tx;
// z of unfinished is inverted
fe25519_mul(&tx, &unf->x, &unf->z);
out[31] ^= fe25519_getparity(&tx) << 7;
}