abc/GmSSL
1
0
Fork 0
mirror of https://github.com/guanzhi/GmSSL.git synced 2026-06-30 17:53:39 +08:00
Code Issues Packages Projects Releases Wiki Activity

Update SM2 ecdh api

Browse Source
This commit is contained in:
Zhi Guan
2023-01-13 09:40:32 +08:00
parent c932069224
commit fd88d8cad6
4 changed files with 23 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
src/sm2_lib.c
View File

@@ -814,7 +814,7 @@ int sm2_decrypt(const SM2_KEY *key, const uint8_t *in, size_t inlen, uint8_t *ou
return 1;
}
int sm2_ecdh(const SM2_KEY *key, const SM2_POINT *peer_public, SM2_POINT *out)
int sm2_do_ecdh(const SM2_KEY *key, const SM2_POINT *peer_public, SM2_POINT *out)
{
if (!key || !peer_public || !out) {
error_print();
@@ -827,6 +827,22 @@ int sm2_ecdh(const SM2_KEY *key, const SM2_POINT *peer_public, SM2_POINT *out)
return 1;
}
int sm2_ecdh(const SM2_KEY *key, const uint8_t *peer_public, size_t peer_public_len, SM2_POINT *out)
{
SM2_POINT point;
if (sm2_point_from_octets(&point, peer_public, peer_public_len) != 1) {
error_print();
return -1;
}
if (sm2_do_ecdh(key, &point, out) != 1) {
error_print();
return -1;
}
return 1;
}
// (x1, y1) = k * G
// r = e + x1
// s = (k - r * d)/(1 + d) = (k +r - r * d - r)/(1 + d) = (k + r - r(1 +d))/(1 + d) = (k + r)/(1 + d) - r