ilyakooo0/urbit
1
0
Fork 0
mirror of https://github.com/ilyakooo0/urbit.git synced 2025-01-03 04:40:50 +03:00
Code Issues Packages Projects Releases Wiki Activity

ed_scalarmult_base -> urcrypt

Browse Source
This commit is contained in:
Paul Driver 2020-07-31 11:55:02 -07:00
parent cc5998ae07
commit cfb9b21018
3 changed files with 33 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

45
pkg/urbit/jets/e/ed_scalarmult_base.c
View File

@ -2,35 +2,38 @@
**
*/
#include "all.h"
#include <ed25519.h>
#include <ge.h>
#include <urcrypt.h>
/* functions
*/
u3_noun
u3qc_scalarmult_base(u3_atom a)
{
c3_w met_w = u3r_met(3, a);
if ( met_w > 32 ) {
return u3_none;
}
else {
c3_y a_y[32], out_y[32];
memset(a_y, 0, 32);
u3r_bytes(0, met_w, a_y, a);
urcrypt_ed_scalarmult_base(a_y, out_y);
return u3i_bytes(32, out_y);
}
}
u3_noun
u3wee_scalarmult_base(u3_noun cor)
{
u3_noun scalar = u3r_at(u3x_sam, cor);
u3_noun a = u3r_at(u3x_sam, cor);
if ( (u3_none == scalar) || (c3n == u3ud(scalar)) ) {
if ( (u3_none == a) || (c3n == u3ud(a)) ) {
return u3m_bail(c3__exit);
}
c3_w met_w = u3r_met(3, scalar);
if ( met_w > 32 ) {
return u3m_bail(c3__fail);
else {
return u3qc_scalarmult_base(a);
}
c3_y scalar_y[32];
memset(scalar_y, 0, 32);
u3r_bytes(0, met_w, scalar_y, scalar);
ge_p3 R;
ge_scalarmult_base(&R, scalar_y);
c3_y output_y[32];
ge_p3_tobytes(output_y, &R);
return u3i_bytes(32, output_y);
}

8
pkg/urcrypt/urcrypt.c
View File

@ -49,6 +49,14 @@ urcrypt_ed_scalarmult(uint8_t a[32], uint8_t b[32], uint8_t out[32])
return 0;
}
void
urcrypt_ed_scalarmult_base(uint8_t a[32], uint8_t out[32])
{
ge_p3 R;
ge_scalarmult_base(&R, a);
ge_p3_tobytes(out, &R);
}
void
urcrypt_ed_sign(uint8_t *message,
size_t length,

1
pkg/urcrypt/urcrypt.h
View File

@ -8,6 +8,7 @@
int urcrypt_ed_point_add(uint8_t a[32], uint8_t b[32], uint8_t out[32]);
int urcrypt_ed_scalarmult(uint8_t a[32], uint8_t b[32], uint8_t out[32]);
void urcrypt_ed_scalarmult_base(uint8_t a[32], uint8_t out[32]);
void urcrypt_ed_sign(uint8_t *message,
size_t length,
uint8_t seed[32],