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#include "rsa_common.h"
static void write_rsakey(rsa_key *key, const int type, const char *fname)
{
unsigned char buf[4096];
unsigned long len = sizeof (buf);
int rc;
if ((rc = rsa_export(buf, &len, type, key)) != CRYPT_OK) {
fail("rsa_export for '%s' failed: %s", fname, error_to_string(rc));
}
write_file(fname, buf, len);
}
int main(int argc, char **argv)
{
int rc = 0;
prng_state prng;
int prng_index;
rsa_key key;
ltc_mp = tfm_desc;
prng_index = register_prng(&sprng_desc); /* (fortuna_desc is a good choice if your platform's PRNG sucks.) */
if (prng_index == -1) {
fail("Failed to register a RNG");
}
if ((rc = rng_make_prng(128, prng_index, &prng, NULL)) != CRYPT_OK) {
fail("rng_make_prng failed: %s", error_to_string(rc));
}
if ((rc = rsa_make_key(&prng, prng_index, 256, 65537, &key)) != CRYPT_OK) {
fail("rng_make_key failed: %s", error_to_string(rc));
}
write_rsakey(&key, PK_PRIVATE, "privatekey.bin");
write_rsakey(&key, PK_PUBLIC, "publickey.bin");
rsa_free(&key);
return 0;
}
/* end of rsa_make_keys.c ... */
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