wlantest: Add BIP-GMAC-128/256 test vectors

Signed-hostap: Jouni Malinen <j@w1.fi>

wlantest/bip.c

@@ -65,3 +65,69 @@ u8 * bip_protect(const u8 *igtk, u8 *frame, size_t len, u8 *ipn, int keyid,
 	*prot_len = plen;
 	return prot;
 }
+
+
+u8 * bip_gmac_protect(const u8 *igtk, size_t igtk_len, u8 *frame, size_t len,
+		      u8 *ipn, int keyid, size_t *prot_len)
+{
+	u8 *prot, *pos, *buf;
+	u16 fc;
+	struct ieee80211_hdr *hdr;
+	size_t plen;
+	u8 nonce[12], *npos;
+
+	plen = len + 26;
+	prot = os_malloc(plen);
+	if (prot == NULL)
+		return NULL;
+	os_memcpy(prot, frame, len);
+	pos = prot + len;
+	*pos++ = WLAN_EID_MMIE;
+	*pos++ = 24;
+	WPA_PUT_LE16(pos, keyid);
+	pos += 2;
+	os_memcpy(pos, ipn, 6);
+	pos += 6;
+	os_memset(pos, 0, 16); /* MIC */
+
+	buf = os_malloc(plen + 20 - 24);
+	if (buf == NULL) {
+		os_free(prot);
+		return NULL;
+	}
+
+	/* BIP AAD: FC(masked) A1 A2 A3 */
+	hdr = (struct ieee80211_hdr *) frame;
+	fc = le_to_host16(hdr->frame_control);
+	fc &= ~(WLAN_FC_RETRY | WLAN_FC_PWRMGT | WLAN_FC_MOREDATA);
+	WPA_PUT_LE16(buf, fc);
+	os_memcpy(buf + 2, hdr->addr1, 3 * ETH_ALEN);
+	os_memcpy(buf + 20, prot + 24, plen - 24);
+	wpa_hexdump(MSG_MSGDUMP, "BIP-GMAC: AAD|Body(masked)",
+		    buf, plen + 20 - 24);
+
+	/* Nonce: A2 | IPN */
+	os_memcpy(nonce, hdr->addr2, ETH_ALEN);
+	npos = nonce + ETH_ALEN;
+	*npos++ = ipn[5];
+	*npos++ = ipn[4];
+	*npos++ = ipn[3];
+	*npos++ = ipn[2];
+	*npos++ = ipn[1];
+	*npos++ = ipn[0];
+	wpa_hexdump(MSG_EXCESSIVE, "BIP-GMAC: Nonce", nonce, sizeof(nonce));
+
+	/* MIC = AES-GMAC(AAD || Frame Body(masked)) */
+	if (aes_gmac(igtk, igtk_len, nonce, sizeof(nonce),
+		     buf, plen + 20 - 24, pos) < 0) {
+		os_free(prot);
+		os_free(buf);
+		return NULL;
+	}
+	os_free(buf);
+
+	wpa_hexdump(MSG_DEBUG, "BIP-GMAC MMIE MIC", pos, 16);
+
+	*prot_len = plen;
+	return prot;
+}

wlantest/test_vectors.c

@@ -408,6 +408,78 @@ static void test_vector_ccmp_256(void)
 }
 
 
+static void test_vector_bip_gmac_128(void)
+{
+	u8 igtk[] = {
+		0x4e, 0xa9, 0x54, 0x3e, 0x09, 0xcf, 0x2b, 0x1e,
+		0xca, 0x66, 0xff, 0xc5, 0x8b, 0xde, 0xcb, 0xcf
+	};
+	u8 ipn[] = { 0x04, 0x00, 0x00, 0x00, 0x00, 0x00 };
+	u8 frame[] = {
+		0xc0, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff,
+		0xff, 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x09, 0x00,
+		0x02, 0x00
+	};
+	u8 *prot;
+	size_t prot_len;
+
+	wpa_printf(MSG_INFO, "\nBIP-GMAC-128 with broadcast "
+		   "Deauthentication frame\n");
+
+	wpa_hexdump(MSG_INFO, "IGTK", igtk, sizeof(igtk));
+	wpa_hexdump(MSG_INFO, "IPN", ipn, sizeof(ipn));
+	wpa_hexdump(MSG_INFO, "Plaintext frame", frame, sizeof(frame));
+
+	prot = bip_gmac_protect(igtk, sizeof(igtk), frame, sizeof(frame),
+				ipn, 4, &prot_len);
+	if (prot == NULL) {
+		wpa_printf(MSG_ERROR, "Failed to protect BIP-GMAC-128 frame");
+		return;
+	}
+
+	wpa_hexdump(MSG_INFO, "Protected MPDU (without FCS)", prot, prot_len);
+	os_free(prot);
+}
+
+
+static void test_vector_bip_gmac_256(void)
+{
+	u8 igtk[] = {
+		0x4e, 0xa9, 0x54, 0x3e, 0x09, 0xcf, 0x2b, 0x1e,
+		0xca, 0x66, 0xff, 0xc5, 0x8b, 0xde, 0xcb, 0xcf,
+		0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+		0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
+	};
+	u8 ipn[] = { 0x04, 0x00, 0x00, 0x00, 0x00, 0x00 };
+	u8 frame[] = {
+		0xc0, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff,
+		0xff, 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x09, 0x00,
+		0x02, 0x00
+	};
+	u8 *prot;
+	size_t prot_len;
+
+	wpa_printf(MSG_INFO, "\nBIP-GMAC-256 with broadcast "
+		   "Deauthentication frame\n");
+
+	wpa_hexdump(MSG_INFO, "IGTK", igtk, sizeof(igtk));
+	wpa_hexdump(MSG_INFO, "IPN", ipn, sizeof(ipn));
+	wpa_hexdump(MSG_INFO, "Plaintext frame", frame, sizeof(frame));
+
+	prot = bip_gmac_protect(igtk, sizeof(igtk), frame, sizeof(frame),
+				ipn, 4, &prot_len);
+	if (prot == NULL) {
+		wpa_printf(MSG_ERROR, "Failed to protect BIP-GMAC-256 frame");
+		return;
+	}
+
+	wpa_hexdump(MSG_INFO, "Protected MPDU (without FCS)", prot, prot_len);
+	os_free(prot);
+}
+
+
 int main(int argc, char *argv[])
 {
 	wpa_debug_level = MSG_EXCESSIVE;
@@ -423,6 +495,8 @@ int main(int argc, char *argv[])
 	test_vector_gcmp();
 	test_vector_gcmp_256();
 	test_vector_ccmp_256();
+	test_vector_bip_gmac_128();
+	test_vector_bip_gmac_256();
 
 	os_program_deinit();
 

wlantest/wlantest.h

@@ -243,6 +243,8 @@ u8 * wep_decrypt(struct wlantest *wt, const struct ieee80211_hdr *hdr,
 
 u8 * bip_protect(const u8 *igtk, u8 *frame, size_t len, u8 *ipn, int keyid,
 		 size_t *prot_len);
+u8 * bip_gmac_protect(const u8 *igtk, size_t igtk_len, u8 *frame, size_t len,
+		      u8 *ipn, int keyid, size_t *prot_len);
 
 u8 * gcmp_decrypt(const u8 *tk, size_t tk_len, const struct ieee80211_hdr *hdr,
 		  const u8 *data, size_t data_len, size_t *decrypted_len);