C++ (Cpp) sshbuf_put_bignum2_bytes Exemples

Exemple #1

Fichier : kexc25519.c Projet : kaleb-himes/openssh-portable

int
kexc25519_shared_key(const u_char key[CURVE25519_SIZE],
    const u_char pub[CURVE25519_SIZE], struct sshbuf *out)
{
	u_char shared_key[CURVE25519_SIZE];
	int r;

#ifdef USING_WOLFSSL
    int ret, ssize = CURVE25519_SIZE;
    ret = wolfSSL_EC25519_shared_key(shared_key, &ssize,
                                     key, CURVE25519_SIZE,
                                     pub, CURVE25519_SIZE);
    if (ret != 1 || ssize != CURVE25519_SIZE)
        fatal("%s: wolfSSL_EC25519_shared_key failed", __func__);
#else
	/* Check for all-zero public key */
	explicit_bzero(shared_key, CURVE25519_SIZE);
	if (timingsafe_bcmp(pub, shared_key, CURVE25519_SIZE) == 0)
		return SSH_ERR_KEY_INVALID_EC_VALUE;

	crypto_scalarmult_curve25519(shared_key, key, pub);
#endif /* USING_WOLFSSL */
#ifdef DEBUG_KEXECDH
	dump_digest("shared secret", shared_key, CURVE25519_SIZE);
#endif
	sshbuf_reset(out);
	r = sshbuf_put_bignum2_bytes(out, shared_key, CURVE25519_SIZE);
	explicit_bzero(shared_key, CURVE25519_SIZE);
	return r;
}

Exemple #2

Fichier : kexc25519.c Projet : mfriedl/openssh

int
kexc25519_shared_key_ext(const u_char key[CURVE25519_SIZE],
    const u_char pub[CURVE25519_SIZE], struct sshbuf *out, int raw)
{
	u_char shared_key[CURVE25519_SIZE];
	u_char zero[CURVE25519_SIZE];
	int r;

	crypto_scalarmult_curve25519(shared_key, key, pub);

	/* Check for all-zero shared secret */
	explicit_bzero(zero, CURVE25519_SIZE);
	if (timingsafe_bcmp(zero, shared_key, CURVE25519_SIZE) == 0)
		return SSH_ERR_KEY_INVALID_EC_VALUE;

#ifdef DEBUG_KEXECDH
	dump_digest("shared secret", shared_key, CURVE25519_SIZE);
#endif
	if (raw)
		r = sshbuf_put(out, shared_key, CURVE25519_SIZE);
	else
		r = sshbuf_put_bignum2_bytes(out, shared_key, CURVE25519_SIZE);
	explicit_bzero(shared_key, CURVE25519_SIZE);
	return r;
}

Exemple #3

Fichier : bufaux.c Projet : anders1556/netbsd-src

void
buffer_put_bignum2_from_string(Buffer *buffer, const u_char *s, u_int l)
{
	int ret;

	if ((ret = sshbuf_put_bignum2_bytes(buffer, s, l)) != 0)
		fatal("%s: %s", __func__, ssh_err(ret));
}

Exemple #4

Fichier : kexc25519.c Projet : CTSRD-SOAAP/openssh-portable

int
kexc25519_shared_key(const u_char key[CURVE25519_SIZE],
    const u_char pub[CURVE25519_SIZE], struct sshbuf *out)
{
	u_char shared_key[CURVE25519_SIZE];
	int r;

	crypto_scalarmult_curve25519(shared_key, key, pub);
#ifdef DEBUG_KEXECDH
	dump_digest("shared secret", shared_key, CURVE25519_SIZE);
#endif
	sshbuf_reset(out);
	r = sshbuf_put_bignum2_bytes(out, shared_key, CURVE25519_SIZE);
	explicit_bzero(shared_key, CURVE25519_SIZE);
	return r;
}

Exemple #5

Fichier : kexc25519.c Projet : 1174533476/Win32-OpenSSH

int
kexc25519_shared_key(const u_char key[CURVE25519_SIZE],
    const u_char pub[CURVE25519_SIZE], struct sshbuf *out)
{
	u_char shared_key[CURVE25519_SIZE];
	int r;

	/* Check for all-zero public key */
	explicit_bzero(shared_key, CURVE25519_SIZE);
	if (timingsafe_bcmp(pub, shared_key, CURVE25519_SIZE) == 0)
		return SSH_ERR_KEY_INVALID_EC_VALUE;

	crypto_scalarmult_curve25519(shared_key, key, pub);
#ifdef DEBUG_KEXECDH
	dump_digest("shared secret", shared_key, CURVE25519_SIZE);
#endif
	sshbuf_reset(out);
	r = sshbuf_put_bignum2_bytes(out, shared_key, CURVE25519_SIZE);
	explicit_bzero(shared_key, CURVE25519_SIZE);
	return r;
}