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ie: Add utility to parse RSN cipher suites

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This commit is contained in:
Denis Kenzior 2015-01-15 17:27:23 -06:00
parent c3e9e2fc9b
commit 20a02eba6a
1 changed files with 42 additions and 0 deletions
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42
src/ie.c
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@ -178,3 +178,45 @@ void ie_tlv_builder_finalize(struct ie_tlv_builder *builder,
if (out_len) if (out_len)
*out_len = len; *out_len = len;
} }
/* 802.11, Section 8.4.2.27.2 */
static bool ie_parse_cipher_suite(const uint8_t *data,
enum ie_rsn_cipher_suite *out)
{
static const uint8_t ieee_oui[3] = { 0x00, 0x0f, 0xac };
/*
* Compare the OUI to the ones we know. OUI Format is found in
* Figure 8-187 of 802.11
*/
if (!memcmp(data, ieee_oui, 3)) {
/* Suite type from Table 8-99 */
switch (data[3]) {
case 0:
*out = IE_RSN_CIPHER_SUITE_USE_GROUP_CIPHER;
return true;
case 1:
*out = IE_RSN_CIPHER_SUITE_WEP40;
return true;
case 2:
*out = IE_RSN_CIPHER_SUITE_TKIP;
return true;
case 4:
*out = IE_RSN_CIPHER_SUITE_CCMP;
return true;
case 5:
*out = IE_RSN_CIPHER_SUITE_WEP104;
return true;
case 6:
*out = IE_RSN_CIPHER_SUITE_BIP;
return true;
case 7:
*out = IE_RSN_CIPHER_SUITE_NO_GROUP_TRAFFIC;
return true;
default:
return false;
}
}
return false;
}