1 files changed, 46 insertions, 0 deletions

diff --git a/nacl/curvecp/curvecpprintkey.c b/nacl/curvecp/curvecpprintkey.c
new file mode 100644
index 00000000..8fd26bcf
--- /dev/null
+++ b/nacl/curvecp/curvecpprintkey.c
@@ -0,0 +1,46 @@
+#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;
+}