1 #include "ge.h" 2 ge_p3_tobytes(unsigned char * s,const ge_p3 * h)3 void ge_p3_tobytes(unsigned char *s,const ge_p3 *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 } 15