gcm_cipher_internal
static int gcm_cipher_internal(PROV_GCM_CTX *ctx, unsigned char *out,
if (gcm_cipher_internal(ctx, out, outl, in, inl) <= 0) {
i = gcm_cipher_internal(ctx, out, outl, NULL, 0);
if (gcm_cipher_internal(ctx, out, outl, in, inl) <= 0)