serval-dna/nacl/nacl-20110221/curvecp/curvecpprintkey.c

47 lines
1.2 KiB
C
Raw Normal View History

#include <unistd.h>
#include "die.h"
#include "e.h"
#include "load.h"
#include "writeall.h"
#include "crypto_box.h"
unsigned char pk[crypto_box_PUBLICKEYBYTES];
unsigned char out[crypto_box_PUBLICKEYBYTES * 2 + 1];
void die_usage(void)
{
die_1(111,"curvecpprintkey: usage: curvecpprintkey keydir\n");
}
void die_fatal(const char *trouble,const char *d,const char *fn)
{
if (d) {
if (fn) die_9(111,"curvecpmakekey: fatal: ",trouble," ",d,"/",fn,": ",e_str(errno),"\n");
die_7(111,"curvecpmakekey: fatal: ",trouble," ",d,": ",e_str(errno),"\n");
}
die_5(111,"curvecpmakekey: fatal: ",trouble,": ",e_str(errno),"\n");
}
int main(int argc,char **argv)
{
char *d;
long long j;
if (!argv[0]) die_usage();
if (!argv[1]) die_usage();
d = argv[1];
if (chdir(d) == -1) die_fatal("unable to chdir to directory",d,0);
if (load("publickey",pk,sizeof pk) == -1) die_fatal("unable to read",d,"publickey");
for (j = 0;j < crypto_box_PUBLICKEYBYTES;++j) {
out[2 * j + 0] = "0123456789abcdef"[15 & (int) (pk[j] >> 4)];
out[2 * j + 1] = "0123456789abcdef"[15 & (int) (pk[j] >> 0)];
}
out[2 * j] = '\n';
if (writeall(1,out,sizeof out) == -1) die_fatal("unable to write output",0,0);
return 0;
}