tinc-vpn.org Git - tinc/blob - src/ed25519/keypair.c

   1 #include "ed25519.h"
   2 #include "sha512.h"
   3 #include "ge.h"
   4
   5
   6 void ed25519_create_keypair(unsigned char *public_key, unsigned char *private_key, const unsigned char *seed) {
   7         ge_p3 A;
   8
   9         sha512(seed, 32, private_key);
  10         private_key[0] &= 248;
  11         private_key[31] &= 63;
  12         private_key[31] |= 64;
  13
  14         ge_scalarmult_base(&A, private_key);
  15         ge_p3_tobytes(public_key, &A);
  16 }