static void
genkey (int algo)
{
gcry_sexp_t s_key = NULL, s_param = NULL;
gsti_error_t err;
gsti_key_t key;
const char * s;
int nbits = 1024;
algo = SSH_PK_RSA; /* XXX */
switch (algo)
{
case SSH_PK_DSS: s = "(genkey(dsa(nbits %d)))"; break;
case SSH_PK_RSA: s = "(genkey(rsa(nbits %d)))"; break;
default: printf ("invalid pk algo '%d'\n", algo); return;
}
err = gcry_sexp_build (&s_param, NULL, s, nbits);
if (!err)
err = gcry_pk_genkey (&s_key, s_param);
if (err)
printf ("genkey: %s\n", gsti_strerror (err));
gcry_sexp_release (s_param);
gcry_sexp_dump (s_key);
gsti_key_from_sexp (s_key, &key);
gcry_sexp_release (s_key);
gsti_key_save (RSA_PUBKEY, 0, key);
gsti_key_save (RSA_SECKEY, 1, key);
gsti_key_free (key);
}
int p2p_sign(unsigned char *msg, size_t msglen, unsigned char *buf, size_t buflen, gcry_sexp_t d_key) {
gcry_sexp_t data;
size_t err;
gcry_sexp_build(&data, &err, "(data (flags pkcs1) (hash sha256 %b))", msglen, msg);
gcry_sexp_dump(data);
return 0;
}
void
test_sexp ( int argc, char **argv )
{
int rc, nbits;
gcry_sexp_t sexp;
gcry_mpi_t key[3];
size_t n;
char *buf;
if ( gcry_mpi_scan( &key[0], GCRYMPI_FMT_HEX, elg_testkey1.p, NULL ) )
BUG();
if ( gcry_mpi_scan( &key[1], GCRYMPI_FMT_HEX, elg_testkey1.g, NULL ) )
BUG();
if ( gcry_mpi_scan( &key[2], GCRYMPI_FMT_HEX, elg_testkey1.y, NULL ) )
BUG();
/* get nbits from a key */
rc = gcry_sexp_build ( &sexp, NULL,
"(public-key(elg(p%m)(g%m)(y%m)))",
key[0], key[1], key[2] );
fputs ( "DUMP of PK:\n", stderr );
gcry_sexp_dump ( sexp );
{ gcry_sexp_t x;
x = gcry_sexp_cdr ( sexp );
fputs ( "DUMP of CDR:\n", stderr );
gcry_sexp_dump ( x );
gcry_sexp_release ( x );
}
nbits = gcry_pk_get_nbits( sexp );
printf ( "elg_testkey1 - nbits=%d\n", nbits );
n = gcry_sexp_sprint ( sexp, 0, NULL, 0 );
buf = gcry_xmalloc ( n );
n = gcry_sexp_sprint ( sexp, 0, buf, n );
printf ( "sprint length=%u\n", (unsigned int)n );
gcry_free ( buf );
gcry_sexp_release( sexp );
}
void
test_genkey ( int argc, char **argv )
{
int rc, nbits = 1024;
gcry_sexp_t s_parms, s_key;
gcry_control( GCRYCTL_INIT_SECMEM, 16384, 0 );
rc = gcry_sexp_build ( &s_parms, NULL, "(genkey(dsa(nbits %d)))", nbits );
rc = gcry_pk_genkey( &s_key, s_parms );
if ( rc ) {
fprintf ( stderr, "genkey failed: %s\n", gpg_strerror (rc) );
return;
}
gcry_sexp_release( s_parms );
gcry_sexp_dump ( s_key );
gcry_sexp_release( s_key );
}