gnutls_anti_replay_set_ptr - Linux
Overview
gnutls_anti_replay_set_ptr configures the anti-replay mechanism of a TLS connection, allowing the application to maintain its own replay list.
Syntax
gnutls_anti_replay_set_ptr(session, list_ptr, hash_func, cmp_func)
| Parameter | Description |
|—|—|
| session
| Pointer to the TLS session object |
| list_ptr
| Pointer to the user-managed replay list structure |
| hash_func
| Hash function used to calculate replay sequence numbers |
| cmp_func
| Comparator function used to compare replay sequence numbers |
Options/Flags
None.
Examples
#include <gnutls/abstract.h>
void set_replay_list(gnutls_session_t session) {
struct replay_list_st replay_list; // Define the replay list structure
// Initialize the replay list structure
gnutls_anti_replay_init(&replay_list);
// Set the replay list and callback functions
gnutls_anti_replay_set_ptr(session, &replay_list, GNUTLS_DIG_SHA256, compare_func);
}
Common Issues
- Security Considerations: Ensure that the replay list and callback functions are securely implemented to prevent replay attacks.
- Performance: Large replay lists can impact performance. Tune the list size according to the application’s needs.
Integration
- Combine with
gnutls_handshake
to establish a TLS connection with anti-replay protection. - Integrate with other TLS connection management functions to handle replay protection throughout the connection lifecycle.
Related Commands
gnutls_anti_replay_init
gnutls_anti_replay_set_sequence_ptr
gnutls_anti_replay_add