tor

The Tor anonymity network
git clone https://git.dasho.dev/tor.git
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ge_tobytes.c (225B)

      1 #include "ge.h"
      2 
      3 void ge_tobytes(unsigned char *s,const ge_p2 *h)
      4 {
      5  fe recip;
      6  fe x;
      7  fe y;
      8 
      9  fe_invert(recip,h->Z);
     10  fe_mul(x,h->X,recip);
     11  fe_mul(y,h->Y,recip);
     12  fe_tobytes(s,y);
     13  s[31] ^= fe_isnegative(x) << 7;
     14 }