TLS_CIPHER_AES_GCM_128_SALT_SIZE
tx_info->salt_size = TLS_CIPHER_AES_GCM_128_SALT_SIZE;
salt_size = TLS_CIPHER_AES_GCM_128_SALT_SIZE;
memcpy(&back->salt, tls_ci->salt, TLS_CIPHER_AES_GCM_128_SALT_SIZE);
unsigned char salt[TLS_CIPHER_AES_GCM_128_SALT_SIZE];
unsigned char salt[TLS_CIPHER_AES_GCM_128_SALT_SIZE];