Curve25519 primitives: X25519 key agreement and Ed25519 signatures. More...

#include <stddef.h>
#include "nilorea/n_openssl_compat.h"

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Macros
#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.
#define	N_ECC_KEY_LEN 32
	raw X25519/Ed25519 key length in bytes
#define	N_ECC_SIG_LEN 64
	Ed25519 signature length in bytes.

Functions
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.
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_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_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_x25519_keypair (unsigned char priv, unsigned char pub)
	generate an X25519 keypair as N_ECC_KEY_LEN-byte raw private and public keys.

Detailed Description

Curve25519 primitives: X25519 key agreement and Ed25519 signatures.

Definition in file n_ecc.h.

Macros