urbit/j/5/ed_puck.c
2014-09-05 13:13:24 -07:00

35 lines
622 B
C

/* gen164/5/ed_puck.c
**
** This file is in the public domain.
*/
#include "all.h"
#include <ed25519.h>
/* functions
*/
u3_noun
u3_cwee_puck(u3_noun cor)
{
c3_y pub_y[32];
c3_y sec_y[64];
c3_y sed_y[32];
c3_w met_w;
u3_noun a = u3_cr_at(u3_cv_sam, cor);
if ( (u3_none == a) || (u3_no == u3ud(a)) ) {
return u3_cm_bail(c3__exit);
}
met_w = u3_cr_met(3, a);
if ( met_w > 32 ) {
return u3_cm_bail(c3__exit);
}
memset(sed_y, 0, 32);
u3_cr_bytes(0, met_w, sed_y, a);
ed25519_create_keypair(pub_y, sec_y, sed_y);
return u3_ci_bytes(32, pub_y);
}