chacha_poly1305_set_key(ctx, mesh->config_key);
if(len > 12 && chacha_poly1305_decrypt_iv96(ctx, buf, buf + 12, len - 12, decrypted, &decrypted_len)) {
chacha_poly1305_set_key(ctx, mesh->config_key);
if(len > 12 && chacha_poly1305_decrypt_iv96(ctx, buf, buf + 12, len - 12, decrypted, &decrypted_len)) {