Exemplos de umac_update em C++ (Cpp)

Exemplo n.º 1

Arquivo: mac.c Projeto: 0x00evil/obfuscated-openssh

u_char *
mac_compute(Mac *mac, u_int32_t seqno, u_char *data, int datalen)
{
	static u_char m[EVP_MAX_MD_SIZE];
	u_char b[4], nonce[8];

	if (mac->mac_len > sizeof(m))
		fatal("mac_compute: mac too long %u %lu",
		    mac->mac_len, (u_long)sizeof(m));

	switch (mac->type) {
	case SSH_EVP:
		put_u32(b, seqno);
		/* reset HMAC context */
		HMAC_Init(&mac->evp_ctx, NULL, 0, NULL);
		HMAC_Update(&mac->evp_ctx, b, sizeof(b));
		HMAC_Update(&mac->evp_ctx, data, datalen);
		HMAC_Final(&mac->evp_ctx, m, NULL);
		break;
	case SSH_UMAC:
		put_u64(nonce, seqno);
		umac_update(mac->umac_ctx, data, datalen);
		umac_final(mac->umac_ctx, m, nonce);
		break;
	default:
		fatal("mac_compute: unknown MAC type");
	}
	return (m);
}

Exemplo n.º 2

Arquivo: mac.c Projeto: mpitzl/libopenssh

int
mac_compute(Mac *mac, u_int32_t seqno, u_char *data, int datalen,
    u_char *digest, size_t dlen)
{
	static u_char m[MAC_DIGEST_LEN_MAX];
	u_char b[4], nonce[8];

	if (mac->mac_len > sizeof(m))
		return SSH_ERR_INTERNAL_ERROR;

	switch (mac->type) {
	case SSH_EVP:
		POKE_U32(b, seqno);
		/* reset HMAC context */
		if (HMAC_Init(&mac->evp_ctx, NULL, 0, NULL) != 1 ||
		    HMAC_Update(&mac->evp_ctx, b, sizeof(b)) != 1 ||
		    HMAC_Update(&mac->evp_ctx, data, datalen) != 1 ||
		    HMAC_Final(&mac->evp_ctx, m, NULL) != 1)
			return SSH_ERR_LIBCRYPTO_ERROR;
		break;
	case SSH_UMAC:
		POKE_U64(nonce, seqno);
		umac_update(mac->umac_ctx, data, datalen);
		umac_final(mac->umac_ctx, m, nonce);
		break;
	default:
		return SSH_ERR_INVALID_ARGUMENT;
	}
	if (digest != NULL) {
		if (dlen > mac->mac_len)
			dlen = mac->mac_len;
		memcpy(digest, m, dlen);
	}
	return 0;
}

Exemplo n.º 3

Arquivo: mac.c Projeto: enukane/netbsd-src

u_char *
mac_compute(Mac *mac, u_int32_t seqno, u_char *data, int datalen)
{
	static union {
		u_char m[EVP_MAX_MD_SIZE];
		u_int64_t for_align;
	} u;
	u_char b[4];
#ifdef UMAC_HAS_BEEN_UNBROKEN
	u_char nonce[8];
#endif

	if (mac->mac_len > sizeof(u))
		fatal("mac_compute: mac too long %u %lu",
		    mac->mac_len, (u_long)sizeof(u));

	switch (mac->type) {
	case SSH_EVP:
		put_u32(b, seqno);
		/* reset HMAC context */
		HMAC_Init(&mac->evp_ctx, NULL, 0, NULL);
		HMAC_Update(&mac->evp_ctx, b, sizeof(b));
		HMAC_Update(&mac->evp_ctx, data, datalen);
		HMAC_Final(&mac->evp_ctx, u.m, NULL);
		break;
#ifdef UMAC_HAS_BEEN_UNBROKEN
	case SSH_UMAC:
		put_u64(nonce, seqno);
		umac_update(mac->umac_ctx, data, datalen);
		umac_final(mac->umac_ctx, u.m, nonce);
		break;
	case SSH_UMAC128:
		put_u64(nonce, seqno);
		umac128_update(mac->umac_ctx, data, datalen);
		umac128_final(mac->umac_ctx, u.m, nonce);
		break;
#endif
	default:
		fatal("mac_compute: unknown MAC type");
	}
	return (u.m);
}

Exemplo n.º 4

Arquivo: mac.c Projeto: 0x0mar/backdoored-ssh

u_char *
mac_compute(Mac *mac, u_int32_t seqno, u_char *data, int datalen)
{
	static union {
		u_char m[EVP_MAX_MD_SIZE];
		u_int64_t for_align;
	} u;
	u_char b[4];
	u_char nonce[8];

	if (mac->mac_len > sizeof(u))
		fatal("mac_compute: mac too long %u %zu",
		    mac->mac_len, sizeof(u));

	switch (mac->type) {
	case SSH_DIGEST:
		put_u32(b, seqno);
		/* reset HMAC context */
		if (ssh_hmac_init(mac->hmac_ctx, NULL, 0) < 0 ||
		    ssh_hmac_update(mac->hmac_ctx, b, sizeof(b)) < 0 ||
		    ssh_hmac_update(mac->hmac_ctx, data, datalen) < 0 ||
		    ssh_hmac_final(mac->hmac_ctx, u.m, sizeof(u.m)) < 0)
			fatal("ssh_hmac failed");
		break;
	case SSH_UMAC:
		put_u64(nonce, seqno);
		umac_update(mac->umac_ctx, data, datalen);
		umac_final(mac->umac_ctx, u.m, nonce);
		break;
	case SSH_UMAC128:
		put_u64(nonce, seqno);
		umac128_update(mac->umac_ctx, data, datalen);
		umac128_final(mac->umac_ctx, u.m, nonce);
		break;
	default:
		fatal("mac_compute: unknown MAC type");
	}
	return (u.m);
}