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authorJouni Malinen <j@w1.fi>2012-09-09 16:04:53 (GMT)
committerJouni Malinen <j@w1.fi>2012-09-09 16:04:53 (GMT)
commite88f0901ebfeac3cd07b8408c880bb4d8c3dbdb9 (patch)
tree468e9a5aa68263166caedc410e928d6167090f3d /wlantest/bip.c
parent7d19d3e9db33b31e768c94e3e9101cd7b28402b9 (diff)
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wlantest: Add BIP-GMAC-128/256 test vectors
Signed-hostap: Jouni Malinen <j@w1.fi>
Diffstat (limited to 'wlantest/bip.c')
-rw-r--r--wlantest/bip.c66
1 files changed, 66 insertions, 0 deletions
diff --git a/wlantest/bip.c b/wlantest/bip.c
index a239d49..d9a52e9 100644
--- a/wlantest/bip.c
+++ b/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;
+}