848718ddde
While this is mostly theoretical, the hash functions can fail and it is better for the upper layer code to explicitly check for such failures. Signed-off-by: Jouni Malinen <j@w1.fi>
96 lines
2.4 KiB
C
96 lines
2.4 KiB
C
/*
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* EAP server/peer: EAP-SAKE shared routines
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* Copyright (c) 2006-2019, Jouni Malinen <j@w1.fi>
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*
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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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*/
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#ifndef EAP_SAKE_COMMON_H
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#define EAP_SAKE_COMMON_H
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#define EAP_SAKE_VERSION 2
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#define EAP_SAKE_SUBTYPE_CHALLENGE 1
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#define EAP_SAKE_SUBTYPE_CONFIRM 2
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#define EAP_SAKE_SUBTYPE_AUTH_REJECT 3
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#define EAP_SAKE_SUBTYPE_IDENTITY 4
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#define EAP_SAKE_AT_RAND_S 1
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#define EAP_SAKE_AT_RAND_P 2
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#define EAP_SAKE_AT_MIC_S 3
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#define EAP_SAKE_AT_MIC_P 4
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#define EAP_SAKE_AT_SERVERID 5
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#define EAP_SAKE_AT_PEERID 6
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#define EAP_SAKE_AT_SPI_S 7
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#define EAP_SAKE_AT_SPI_P 8
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#define EAP_SAKE_AT_ANY_ID_REQ 9
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#define EAP_SAKE_AT_PERM_ID_REQ 10
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#define EAP_SAKE_AT_ENCR_DATA 128
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#define EAP_SAKE_AT_IV 129
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#define EAP_SAKE_AT_PADDING 130
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#define EAP_SAKE_AT_NEXT_TMPID 131
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#define EAP_SAKE_AT_MSK_LIFE 132
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#define EAP_SAKE_RAND_LEN 16
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#define EAP_SAKE_MIC_LEN 16
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#define EAP_SAKE_ROOT_SECRET_LEN 16
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#define EAP_SAKE_SMS_LEN 16
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#define EAP_SAKE_TEK_AUTH_LEN 16
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#define EAP_SAKE_TEK_CIPHER_LEN 16
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#define EAP_SAKE_TEK_LEN (EAP_SAKE_TEK_AUTH_LEN + EAP_SAKE_TEK_CIPHER_LEN)
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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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struct eap_sake_hdr {
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u8 version; /* EAP_SAKE_VERSION */
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u8 session_id;
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u8 subtype;
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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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struct eap_sake_parse_attr {
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const u8 *rand_s;
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const u8 *rand_p;
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const u8 *mic_s;
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const u8 *mic_p;
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const u8 *serverid;
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size_t serverid_len;
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const u8 *peerid;
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size_t peerid_len;
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const u8 *spi_s;
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size_t spi_s_len;
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const u8 *spi_p;
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size_t spi_p_len;
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const u8 *any_id_req;
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const u8 *perm_id_req;
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const u8 *encr_data;
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size_t encr_data_len;
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const u8 *iv;
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size_t iv_len;
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const u8 *next_tmpid;
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size_t next_tmpid_len;
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const u8 *msk_life;
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};
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int eap_sake_parse_attributes(const u8 *buf, size_t len,
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struct eap_sake_parse_attr *attr);
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int eap_sake_derive_keys(const u8 *root_secret_a, const u8 *root_secret_b,
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const u8 *rand_s, const u8 *rand_p,
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u8 *tek, u8 *msk, u8 *emsk);
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int eap_sake_compute_mic(const u8 *tek_auth,
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const u8 *rand_s, const u8 *rand_p,
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const u8 *serverid, size_t serverid_len,
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const u8 *peerid, size_t peerid_len,
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int peer, const u8 *eap, size_t eap_len,
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const u8 *mic_pos, u8 *mic);
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void eap_sake_add_attr(struct wpabuf *buf, u8 type, const u8 *data,
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size_t len);
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#endif /* EAP_SAKE_COMMON_H */
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