wlantest: Remove CCMP specific AAD handling from GCMP

GCMP encodes length of AAD differently, so remove the unnecessary
code that got copied from the CCMP implementation.

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

wlantest/gcmp.c

@@ -386,7 +386,7 @@ static void gcmp_aad_nonce(const struct ieee80211_hdr *hdr, const u8 *data,
 u8 * gcmp_decrypt(const u8 *tk, const struct ieee80211_hdr *hdr,
 		  const u8 *data, size_t data_len, size_t *decrypted_len)
 {
-	u8 aad[2 + 30], nonce[12], *plain;
+	u8 aad[30], nonce[12], *plain;
 	size_t aad_len, mlen;
 	const u8 *m;
 
@@ -401,12 +401,11 @@ u8 * gcmp_decrypt(const u8 *tk, const struct ieee80211_hdr *hdr,
 	mlen = data_len - 8 - 16;
 
 	os_memset(aad, 0, sizeof(aad));
-	gcmp_aad_nonce(hdr, data, &aad[2], &aad_len, nonce);
-	WPA_PUT_BE16(aad, aad_len);
-	wpa_hexdump(MSG_EXCESSIVE, "GCMP AAD", &aad[2], aad_len);
+	gcmp_aad_nonce(hdr, data, aad, &aad_len, nonce);
+	wpa_hexdump(MSG_EXCESSIVE, "GCMP AAD", aad, aad_len);
 	wpa_hexdump(MSG_EXCESSIVE, "GCMP nonce", nonce, sizeof(nonce));
 
-	if (aes_gcm_ad(tk, nonce, m, mlen, &aad[2], aad_len, m + mlen, plain) <
+	if (aes_gcm_ad(tk, nonce, m, mlen, aad, aad_len, m + mlen, plain) <
 	    0) {
 		u16 seq_ctrl = le_to_host16(hdr->seq_ctrl);
 		wpa_printf(MSG_INFO, "Invalid GCMP frame: A1=" MACSTR
@@ -427,7 +426,7 @@ u8 * gcmp_decrypt(const u8 *tk, const struct ieee80211_hdr *hdr,
 u8 * gcmp_encrypt(const u8 *tk, u8 *frame, size_t len, size_t hdrlen, u8 *qos,
 		  u8 *pn, int keyid, size_t *encrypted_len)
 {
-	u8 aad[2 + 30], nonce[12], *crypt, *pos;
+	u8 aad[30], nonce[12], *crypt, *pos;
 	size_t aad_len, plen;
 	struct ieee80211_hdr *hdr;
 
@@ -453,12 +452,11 @@ u8 * gcmp_encrypt(const u8 *tk, u8 *frame, size_t len, size_t hdrlen, u8 *qos,
 	*pos++ = pn[0]; /* PN5 */
 
 	os_memset(aad, 0, sizeof(aad));
-	gcmp_aad_nonce(hdr, crypt + hdrlen, &aad[2], &aad_len, nonce);
-	WPA_PUT_BE16(aad, aad_len);
-	wpa_hexdump(MSG_EXCESSIVE, "GCMP AAD", &aad[2], aad_len);
+	gcmp_aad_nonce(hdr, crypt + hdrlen, aad, &aad_len, nonce);
+	wpa_hexdump(MSG_EXCESSIVE, "GCMP AAD", aad, aad_len);
 	wpa_hexdump(MSG_EXCESSIVE, "GCMP nonce", nonce, sizeof(nonce));
 
-	if (aes_gcm_ae(tk, nonce, frame + hdrlen, plen, &aad[2], aad_len,
+	if (aes_gcm_ae(tk, nonce, frame + hdrlen, plen, aad, aad_len,
 		       pos, pos + plen) < 0) {
 		os_free(crypt);
 		return NULL;