Global s2n_cleanup (void): This function is a no-op. It previously cleaned up thread-local DRBG state, but the custom DRBG has been removed. Retained for API compatibility. Use s2n_cleanup_final() for full library cleanup.
Global s2n_config_add_cert_chain_and_key (struct s2n_config *config, const char *cert_chain_pem, const char *private_key_pem): Use s2n_config_add_cert_chain_and_key_to_store instead.
Global s2n_config_set_extension_data (struct s2n_config *config, s2n_tls_extension_type type, const uint8_t *data, uint32_t length): Use s2n_cert_chain_and_key_set_ocsp_data and s2n_cert_chain_and_key_set_sct_list instead.
Global s2n_connection_get_curve (struct s2n_connection *conn): Use s2n_connection_get_key_exchange_group instead
Global s2n_connection_get_kem_name (struct s2n_connection *conn): This function was previously used to retrieve the negotiated PQ group in TLS 1.2. PQ key exchange in TLS1.2 was experimental and is now deprecated. Use s2n_connection_get_kem_group_name() to retrieve the PQ TLS 1.3 Group name.
Global s2n_rand_cleanup_callback )(void): No longer used. See s2n_rand_set_callbacks.
Global s2n_rand_init_callback )(void): No longer used. See s2n_rand_set_callbacks.
Global s2n_rand_mix_callback )(void *data, uint32_t size): No longer used. See s2n_rand_set_callbacks.
Global s2n_rand_seed_callback )(void *data, uint32_t size): No longer used. See s2n_rand_set_callbacks.
Global s2n_rand_set_callbacks (s2n_rand_init_callback rand_init_callback, s2n_rand_cleanup_callback rand_cleanup_callback, s2n_rand_seed_callback rand_seed_callback, s2n_rand_mix_callback rand_mix_callback): Custom random callbacks are no longer supported. Randomness is now delegated directly to libcrypto or /dev/urandom. This function is a no-op kept for backwards compatibility.