2008-02-27 20:34:43 -05:00
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/*
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* EAP server/peer: EAP-PSK shared routines
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* Copyright (c) 2004-2007, Jouni Malinen <j@w1.fi>
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*
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2012-02-11 09:46:35 -05:00
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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2008-02-27 20:34:43 -05:00
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*/
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#ifndef EAP_PSK_COMMON_H
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#define EAP_PSK_COMMON_H
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#define EAP_PSK_RAND_LEN 16
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#define EAP_PSK_MAC_LEN 16
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#define EAP_PSK_TEK_LEN 16
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#define EAP_PSK_PSK_LEN 16
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#define EAP_PSK_AK_LEN 16
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#define EAP_PSK_KDK_LEN 16
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#define EAP_PSK_R_FLAG_CONT 1
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#define EAP_PSK_R_FLAG_DONE_SUCCESS 2
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#define EAP_PSK_R_FLAG_DONE_FAILURE 3
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#define EAP_PSK_E_FLAG 0x20
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#define EAP_PSK_FLAGS_GET_T(flags) (((flags) & 0xc0) >> 6)
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#define EAP_PSK_FLAGS_SET_T(t) ((u8) (t) << 6)
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#ifdef _MSC_VER
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#pragma pack(push, 1)
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#endif /* _MSC_VER */
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/* EAP-PSK First Message (AS -> Supplicant) */
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struct eap_psk_hdr_1 {
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u8 flags;
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u8 rand_s[EAP_PSK_RAND_LEN];
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/* Followed by variable length ID_S */
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} STRUCT_PACKED;
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/* EAP-PSK Second Message (Supplicant -> AS) */
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struct eap_psk_hdr_2 {
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u8 flags;
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u8 rand_s[EAP_PSK_RAND_LEN];
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u8 rand_p[EAP_PSK_RAND_LEN];
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u8 mac_p[EAP_PSK_MAC_LEN];
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/* Followed by variable length ID_P */
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} STRUCT_PACKED;
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/* EAP-PSK Third Message (AS -> Supplicant) */
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struct eap_psk_hdr_3 {
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u8 flags;
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u8 rand_s[EAP_PSK_RAND_LEN];
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u8 mac_s[EAP_PSK_MAC_LEN];
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/* Followed by variable length PCHANNEL */
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} STRUCT_PACKED;
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/* EAP-PSK Fourth Message (Supplicant -> AS) */
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struct eap_psk_hdr_4 {
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u8 flags;
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u8 rand_s[EAP_PSK_RAND_LEN];
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/* Followed by variable length PCHANNEL */
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} STRUCT_PACKED;
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#ifdef _MSC_VER
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#pragma pack(pop)
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#endif /* _MSC_VER */
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int __must_check eap_psk_key_setup(const u8 *psk, u8 *ak, u8 *kdk);
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int __must_check eap_psk_derive_keys(const u8 *kdk, const u8 *rand_p, u8 *tek,
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u8 *msk, u8 *emsk);
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#endif /* EAP_PSK_COMMON_H */
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