Don't crash encoding a public key with no public key value
If asked to encode an EC_KEY public key, but no public key value is present
in the structure, we should fail rather than crash.
Fixes the crash seen here:
@@ -701,6 +701,10 @@ static int prepare_ec_params(const void *eckey, int nid, int save,
static int ec_spki_pub_to_der(const void *eckey, unsigned char **pder)
{
+ if (EC_KEY_get0_public_key(eckey) == NULL) {
+ ERR_raise(ERR_LIB_PROV, PROV_R_NOT_A_PUBLIC_KEY);
+ return 0;
+ }
return i2o_ECPublicKey(eckey, pder);
}
