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Struct N_STR Struct N_TIFF Struct N_TIFF_ENTRY Struct N_TIME Struct N_URL Struct N_URL_PARAM Struct N_USER Struct N_USERLIST Struct N_WS_CONN Struct N_WS_FRAME Struct N_WS_MESSAGE Struct N_ZIP_MEMBER Struct OCTREE Struct OCTREE_NODE Struct PARSER Struct PARTICLE Struct PARTICLE_EMITTER Struct PARTICLE_SYSTEM Struct PEER Struct PHYSICS Struct PK_OBJ Struct PK_VM Struct POINT2D Struct POINT3D Struct PRETTY_OUT Struct QNODE Struct QUADTREE Struct QUADTREE_NODE Struct REC Struct RGB Struct SAMPLE Struct SEEN Struct SHARER Struct SRV Struct SRV_ARG Struct STACK Struct STACK_ITEM Struct SYNTAX_RUN Struct THREAD_POOL Struct THREAD_POOL_NODE Struct THREAD_WAITING_PROC Struct TRAJECTORY Struct TRAJECTORY_POINT Struct TREE Struct TREE_NODE Struct TS_LOG Struct WAYPOINT3D Struct WORKER_ARG Struct ZIP_SINK Struct _N_DC_ENTRY Struct _N_DC_GROUP_ENTRY Struct _N_GUI_COLORWHEEL Struct _N_GUI_COLORWHEEL_BLOCK Struct _N_GUI_COLORWHEEL_MOUSE Struct _N_GUI_CURVE Struct _N_GUI_CURVE_BLOCK Struct _N_GUI_CURVE_MOUSE Struct _N_GUI_GRID Struct _N_GUI_POPUP_ENTRY Struct _N_GUI_POPUP_LEVEL Struct _N_GUI_SB_SKIN Struct _N_GUI_TA_STEP Struct _N_GUI_THUMB Struct _N_GUI_WRAP_ACC Struct _compiled Struct _conn Struct _ip_slot Struct _mp_param Struct _n_civil Struct _seg Struct client Struct collector Struct date_vector Struct md_atom Struct md_cells Struct md_hit Struct md_line_ctx Struct mline Struct n_http_req_header Struct n_http_req_limits Struct n_http_request Struct n_markdown_block Struct n_markdown_doc Struct n_markdown_inline Struct n_markdown_span Struct n_reactor_stats Struct n_url_safe Struct n_url_safe_head Struct n_wrap_item Struct producer_state Struct rects Struct reply Struct runner Struct sink Struct tbuf Struct wrap_hit Struct wrap_span Structures Union COORD_VALUE Union HASH_DATA Union NODE_DATA_TYPES Union STACK_DATA dir_310dcdd4703e877a6b99d5dc3fc54d27 dir_68267d1309a1af8e8297ef4c3efbcdba dir_d28a4824dc47e487b107a5db32ef43c4 dir_d44c64559bbebec7f509842c48db8b23 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ex_gui_dropmenu_8c example ex_gui_frameless_drag_8c example ex_gui_global_scroll_8c example ex_gui_glyph_8c example ex_gui_grid_8c example ex_gui_hexview_8c example ex_gui_hover_8c example ex_gui_isometric_8c example ex_gui_kvtable_8c example ex_gui_label_fits_8c example ex_gui_label_lines_8c example ex_gui_layout_persist_8c example ex_gui_listbox_8c example ex_gui_md_8c example ex_gui_multiwin_8c example ex_gui_network_8c example ex_gui_particles_8c example ex_gui_placeholder_8c example ex_gui_popup_8c example ex_gui_progressbar_8c example ex_gui_reentrant_8c example ex_gui_round_8c example ex_gui_sectionlist_8c example ex_gui_slider_default_8c example ex_gui_slider_handle_8c example ex_gui_slider_step_8c example ex_gui_splitpane_8c example ex_gui_suggest_8c example ex_gui_syntaxview_8c example ex_gui_text_shorten_8c example ex_gui_textarea_selection_8c example ex_gui_tooltip_8c example ex_gui_tree_lazy_8c example ex_gui_tree_order_8c example ex_gui_tree_state_8c example ex_gui_window_rect_8c example ex_gui_zorder_8c example ex_hash_8c example ex_hex_8c example ex_html_8c example ex_http2_8c example ex_http2_server_8c example ex_http_cookie_8c example ex_http_form_8c example ex_http_mime_8c example ex_http_req_8c example ex_http_response_8c example ex_http_router_8c example ex_http_server_8c example ex_icc_8c example ex_iso_astar_8c example ex_json_8c example ex_kafka_8c example ex_linalg_8c example ex_list_8c example ex_log_8c example ex_markdown_8c example ex_module_8c example ex_monolith_8c example ex_network_8c example ex_network_8h example ex_network_accept_8c example ex_network_alpn_8c example ex_network_connect_abort_8c example ex_network_mock_8c example ex_network_proxy_8c example ex_network_reactor_8c example ex_network_sni_8c example ex_network_sse_8c example ex_network_ssl_8c example ex_network_ssl_hardened_8c example ex_network_ssl_hostname_8c example ex_network_ssl_nonblock_8c example ex_network_tls_defaults_8c example ex_network_ws_8c example ex_network_ws_limits_8c example ex_nstr_8c example ex_parallel_for_8c example ex_parallel_team_8c example ex_pcre_8c example ex_pretty_8c example ex_pth_8c example ex_query_8c example ex_random_8c example ex_sha256_8c example ex_signals_8c example ex_spawn_8c example ex_ssrf_8c example ex_stack_8c example ex_threads_8c example ex_tiff_8c example ex_time_formats_8c example ex_trajectory_8c example ex_trees_8c example ex_url_8c example ex_url_safe_8c example ex_wrap_8c example ex_x509_8c example ex_zip_8c example ex_zlib_8c example mainpage_8dox n__3d_8c n__3d_8h n__aabb_8c n__aabb_8h n__allegro5_8c n__allegro5_8h n__allegro__4_8c n__allegro__4_8h n__anim_8c n__anim_8h n__astar_8c n__astar_8h n__atlas_8c n__atlas_8h n__avro_8c n__avro_8h n__base64_8c n__base64_8h n__clipboard_8c n__clipboard_8h n__clock__sync_8c n__clock__sync_8h n__common_8c n__common_8h n__config__file_8c n__config__file_8h n__cookies_8c n__cookies_8h n__crypto_8c n__crypto_8h n__dead__reckoning_8c 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5 Module N_ECC
gullradriel edited this page 2026-10-09 00:55:18 +02:00
Table of Contents

ECC: Curve25519 (X25519 ECDH + Ed25519 EdDSA) over EVP

Functions

Name
int n_x25519_keypair(unsigned char * priv, unsigned char * pub)
generate an X25519 keypair as N_ECC_KEY_LEN-byte raw private and public keys.
int n_x25519_derive(const unsigned char * priv, const unsigned char * peer_pub, unsigned char * shared)
X25519 ECDH: derive the N_ECC_KEY_LEN-byte shared secret from our raw private key and the peer's raw public key.
int n_ed25519_verify(const unsigned char * pub, const unsigned char * msg, size_t len, const unsigned char * sig)
Ed25519 verify the N_ECC_SIG_LEN-byte sig over len bytes of msg under the N_ECC_KEY_LEN-byte raw public key.
int n_ed25519_sign(const unsigned char * priv, const unsigned char * msg, size_t len, unsigned char * sig)
Ed25519 sign len bytes of msg with the N_ECC_KEY_LEN-byte raw private key into sig (N_ECC_SIG_LEN bytes).
int n_ed25519_keypair(unsigned char * priv, unsigned char * pub)
generate an Ed25519 keypair as N_ECC_KEY_LEN-byte raw private and public keys.

Defines

Name
N_ECC_SIG_LEN
Ed25519 signature length in bytes.
N_ECC_KEY_LEN
raw X25519/Ed25519 key length in bytes
N_ECC_AVAILABLE
1 when the linked library provides Curve25519 through the raw-key EVP API (OpenSSL 1.1.1+, LibreSSL 3.7+), 0 otherwise.

Functions Documentation

function n_x25519_keypair

int n_x25519_keypair(
    unsigned char * priv,
    unsigned char * pub
)

generate an X25519 keypair as N_ECC_KEY_LEN-byte raw private and public keys.

Returns 0 on success, -1 on error.

function n_x25519_derive

int n_x25519_derive(
    const unsigned char * priv,
    const unsigned char * peer_pub,
    unsigned char * shared
)

X25519 ECDH: derive the N_ECC_KEY_LEN-byte shared secret from our raw private key and the peer's raw public key.

Returns 0 on success, -1 on error.

function n_ed25519_verify

int n_ed25519_verify(
    const unsigned char * pub,
    const unsigned char * msg,
    size_t len,
    const unsigned char * sig
)

Ed25519 verify the N_ECC_SIG_LEN-byte sig over len bytes of msg under the N_ECC_KEY_LEN-byte raw public key.

Returns 0 if the signature is valid, -1 otherwise.

function n_ed25519_sign

int n_ed25519_sign(
    const unsigned char * priv,
    const unsigned char * msg,
    size_t len,
    unsigned char * sig
)

Ed25519 sign len bytes of msg with the N_ECC_KEY_LEN-byte raw private key into sig (N_ECC_SIG_LEN bytes).

Returns 0 on success, -1 on error.

function n_ed25519_keypair

int n_ed25519_keypair(
    unsigned char * priv,
    unsigned char * pub
)

generate an Ed25519 keypair as N_ECC_KEY_LEN-byte raw private and public keys.

Returns 0 on success, -1 on error.

Macros Documentation

define N_ECC_SIG_LEN

#define N_ECC_SIG_LEN 64

Ed25519 signature length in bytes.

define N_ECC_KEY_LEN

#define N_ECC_KEY_LEN 32

raw X25519/Ed25519 key length in bytes

define N_ECC_AVAILABLE

#define N_ECC_AVAILABLE N_OSSL_HAVE_RAW_EVP_25519

1 when the linked library provides Curve25519 through the raw-key EVP API (OpenSSL 1.1.1+, LibreSSL 3.7+), 0 otherwise.

This one still builds against OpenSSL 1.0.2, which has neither EVP_PKEY_X25519/EVP_PKEY_ED25519 nor EVP_PKEY_new_raw_*_key(); there every entry point below compiles to a logged failure returning -1, so callers still link and can skip the call on this test. The threshold lives in n_openssl_compat.h, which knows that OPENSSL_VERSION_NUMBER is a fixed compatibility value under LibreSSL.

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