1189251Ssam/* 2189251Ssam * EAP-FAST definitions (RFC 4851) 3189251Ssam * Copyright (c) 2004-2008, Jouni Malinen <j@w1.fi> 4189251Ssam * 5252726Srpaulo * This software may be distributed under the terms of the BSD license. 6252726Srpaulo * See README for more details. 7189251Ssam */ 8189251Ssam 9189251Ssam#ifndef EAP_FAST_H 10189251Ssam#define EAP_FAST_H 11189251Ssam 12189251Ssam#define EAP_FAST_VERSION 1 13189251Ssam#define EAP_FAST_KEY_LEN 64 14189251Ssam#define EAP_FAST_SIMCK_LEN 40 15189251Ssam#define EAP_FAST_SKS_LEN 40 16189251Ssam#define EAP_FAST_CMK_LEN 20 17189251Ssam 18189251Ssam#define TLS_EXT_PAC_OPAQUE 35 19189251Ssam 20189251Ssam/* 21209158Srpaulo * RFC 5422: Section 4.2.1 - Formats for PAC TLV Attributes / Type Field 22189251Ssam * Note: bit 0x8000 (Mandatory) and bit 0x4000 (Reserved) are also defined 23189251Ssam * in the general PAC TLV format (Section 4.2). 24189251Ssam */ 25189251Ssam#define PAC_TYPE_PAC_KEY 1 26189251Ssam#define PAC_TYPE_PAC_OPAQUE 2 27189251Ssam#define PAC_TYPE_CRED_LIFETIME 3 28189251Ssam#define PAC_TYPE_A_ID 4 29189251Ssam#define PAC_TYPE_I_ID 5 30189251Ssam/* 31189251Ssam * 6 was previous assigned for SERVER_PROTECTED_DATA, but 32189251Ssam * draft-cam-winget-eap-fast-provisioning-02.txt changed this to Reserved. 33189251Ssam */ 34189251Ssam#define PAC_TYPE_A_ID_INFO 7 35189251Ssam#define PAC_TYPE_PAC_ACKNOWLEDGEMENT 8 36189251Ssam#define PAC_TYPE_PAC_INFO 9 37189251Ssam#define PAC_TYPE_PAC_TYPE 10 38189251Ssam 39189251Ssam#ifdef _MSC_VER 40189251Ssam#pragma pack(push, 1) 41189251Ssam#endif /* _MSC_VER */ 42189251Ssam 43189251Ssamstruct pac_tlv_hdr { 44189251Ssam be16 type; 45189251Ssam be16 len; 46189251Ssam} STRUCT_PACKED; 47189251Ssam 48189251Ssam#ifdef _MSC_VER 49189251Ssam#pragma pack(pop) 50189251Ssam#endif /* _MSC_VER */ 51189251Ssam 52189251Ssam 53189251Ssam#define EAP_FAST_PAC_KEY_LEN 32 54189251Ssam 55209158Srpaulo/* RFC 5422: 4.2.6 PAC-Type TLV */ 56189251Ssam#define PAC_TYPE_TUNNEL_PAC 1 57189251Ssam/* Application Specific Short Lived PACs (only in volatile storage) */ 58189251Ssam/* User Authorization PAC */ 59189251Ssam#define PAC_TYPE_USER_AUTHORIZATION 3 60189251Ssam/* Application Specific Long Lived PACs */ 61189251Ssam/* Machine Authentication PAC */ 62189251Ssam#define PAC_TYPE_MACHINE_AUTHENTICATION 2 63189251Ssam 64189251Ssam 65189251Ssam/* 66209158Srpaulo * RFC 5422: 67209158Srpaulo * Section 3.3 - Key Derivations Used in the EAP-FAST Provisioning Exchange 68189251Ssam */ 69189251Ssamstruct eap_fast_key_block_provisioning { 70189251Ssam /* Extra key material after TLS key_block */ 71189251Ssam u8 session_key_seed[EAP_FAST_SKS_LEN]; 72189251Ssam u8 server_challenge[16]; /* MSCHAPv2 ServerChallenge */ 73189251Ssam u8 client_challenge[16]; /* MSCHAPv2 ClientChallenge */ 74189251Ssam}; 75189251Ssam 76189251Ssam 77189251Ssamstruct wpabuf; 78189251Ssamstruct tls_connection; 79189251Ssam 80189251Ssamstruct eap_fast_tlv_parse { 81189251Ssam u8 *eap_payload_tlv; 82189251Ssam size_t eap_payload_tlv_len; 83189251Ssam struct eap_tlv_crypto_binding_tlv *crypto_binding; 84189251Ssam size_t crypto_binding_len; 85189251Ssam int iresult; 86189251Ssam int result; 87189251Ssam int request_action; 88189251Ssam u8 *pac; 89189251Ssam size_t pac_len; 90189251Ssam}; 91189251Ssam 92189251Ssamvoid eap_fast_put_tlv_hdr(struct wpabuf *buf, u16 type, u16 len); 93189251Ssamvoid eap_fast_put_tlv(struct wpabuf *buf, u16 type, const void *data, 94189251Ssam u16 len); 95189251Ssamvoid eap_fast_put_tlv_buf(struct wpabuf *buf, u16 type, 96189251Ssam const struct wpabuf *data); 97189251Ssamstruct wpabuf * eap_fast_tlv_eap_payload(struct wpabuf *buf); 98189251Ssamvoid eap_fast_derive_master_secret(const u8 *pac_key, const u8 *server_random, 99189251Ssam const u8 *client_random, u8 *master_secret); 100189251Ssamu8 * eap_fast_derive_key(void *ssl_ctx, struct tls_connection *conn, 101189251Ssam const char *label, size_t len); 102189251Ssamvoid eap_fast_derive_eap_msk(const u8 *simck, u8 *msk); 103189251Ssamvoid eap_fast_derive_eap_emsk(const u8 *simck, u8 *emsk); 104189251Ssamint eap_fast_parse_tlv(struct eap_fast_tlv_parse *tlv, 105189251Ssam int tlv_type, u8 *pos, int len); 106189251Ssam 107189251Ssam#endif /* EAP_FAST_H */ 108