1 | /* |
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2 | * EAP server/peer: EAP-PSK shared routines |
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3 | * Copyright (c) 2004-2007, Jouni Malinen <j@w1.fi> |
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4 | * |
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5 | * This software may be distributed under the terms of the BSD license. |
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6 | * See README for more details. |
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7 | */ |
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8 | |
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9 | #ifndef EAP_PSK_COMMON_H |
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10 | #define EAP_PSK_COMMON_H |
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11 | |
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12 | |
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13 | #define EAP_PSK_RAND_LEN 16 |
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14 | #define EAP_PSK_MAC_LEN 16 |
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15 | #define EAP_PSK_TEK_LEN 16 |
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16 | #define EAP_PSK_PSK_LEN 16 |
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17 | #define EAP_PSK_AK_LEN 16 |
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18 | #define EAP_PSK_KDK_LEN 16 |
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19 | |
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20 | #define EAP_PSK_R_FLAG_CONT 1 |
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21 | #define EAP_PSK_R_FLAG_DONE_SUCCESS 2 |
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22 | #define EAP_PSK_R_FLAG_DONE_FAILURE 3 |
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23 | #define EAP_PSK_E_FLAG 0x20 |
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24 | |
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25 | #define EAP_PSK_FLAGS_GET_T(flags) (((flags) & 0xc0) >> 6) |
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26 | #define EAP_PSK_FLAGS_SET_T(t) ((u8) (t) << 6) |
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27 | |
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28 | #ifdef _MSC_VER |
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29 | #pragma pack(push, 1) |
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30 | #endif /* _MSC_VER */ |
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31 | |
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32 | /* EAP-PSK First Message (AS -> Supplicant) */ |
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33 | struct eap_psk_hdr_1 { |
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34 | u8 flags; |
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35 | u8 rand_s[EAP_PSK_RAND_LEN]; |
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36 | /* Followed by variable length ID_S */ |
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37 | } STRUCT_PACKED; |
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38 | |
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39 | /* EAP-PSK Second Message (Supplicant -> AS) */ |
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40 | struct eap_psk_hdr_2 { |
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41 | u8 flags; |
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42 | u8 rand_s[EAP_PSK_RAND_LEN]; |
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43 | u8 rand_p[EAP_PSK_RAND_LEN]; |
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44 | u8 mac_p[EAP_PSK_MAC_LEN]; |
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45 | /* Followed by variable length ID_P */ |
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46 | } STRUCT_PACKED; |
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47 | |
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48 | /* EAP-PSK Third Message (AS -> Supplicant) */ |
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49 | struct eap_psk_hdr_3 { |
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50 | u8 flags; |
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51 | u8 rand_s[EAP_PSK_RAND_LEN]; |
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52 | u8 mac_s[EAP_PSK_MAC_LEN]; |
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53 | /* Followed by variable length PCHANNEL */ |
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54 | } STRUCT_PACKED; |
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55 | |
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56 | /* EAP-PSK Fourth Message (Supplicant -> AS) */ |
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57 | struct eap_psk_hdr_4 { |
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58 | u8 flags; |
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59 | u8 rand_s[EAP_PSK_RAND_LEN]; |
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60 | /* Followed by variable length PCHANNEL */ |
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61 | } STRUCT_PACKED; |
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62 | |
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63 | #ifdef _MSC_VER |
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64 | #pragma pack(pop) |
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65 | #endif /* _MSC_VER */ |
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66 | |
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67 | |
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68 | int __must_check eap_psk_key_setup(const u8 *psk, u8 *ak, u8 *kdk); |
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69 | int __must_check eap_psk_derive_keys(const u8 *kdk, const u8 *rand_p, u8 *tek, |
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70 | u8 *msk, u8 *emsk); |
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71 | |
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72 | #endif /* EAP_PSK_COMMON_H */ |
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