projects / thirdparty / hostap.git / blame
| Commit | Line | Data |
|---|---|---|
| df684d82 DH |
1 | /* |
| 2 | * EAP server/peer: EAP-pwd shared definitions | |
| 3 | * Copyright (c) 2009, Dan Harkins <dharkins@lounge.org> | |
| 4 | * | |
| 0dd1603c JM |
5 | * This software may be distributed under the terms of the BSD license. |
| 6 | * See README for more details. | |
| df684d82 DH |
7 | */ |
| 8 | ||
| 9 | #ifndef EAP_PWD_COMMON_H | |
| 10 | #define EAP_PWD_COMMON_H | |
| 11 | ||
| 12 | #include <openssl/bn.h> | |
| df684d82 DH |
13 | #include <openssl/ec.h> |
| 14 | #include <openssl/evp.h> | |
| df684d82 DH |
15 | |
| 16 | /* | |
| 17 | * definition of a finite cyclic group | |
| 18 | * TODO: support one based on a prime field | |
| 19 | */ | |
| 20 | typedef struct group_definition_ { | |
| 21 | u16 group_num; | |
| 22 | EC_GROUP *group; | |
| 23 | EC_POINT *pwe; | |
| 24 | BIGNUM *order; | |
| 25 | BIGNUM *prime; | |
| 26 | } EAP_PWD_group; | |
| 27 | ||
| 28 | /* | |
| 29 | * EAP-pwd header, included on all payloads | |
| 5419d6af | 30 | * L(1 bit) | M(1 bit) | exch(6 bits) | total_length(if L is set) |
| df684d82 | 31 | */ |
| 5ea93947 | 32 | #define EAP_PWD_HDR_SIZE 1 |
| df684d82 DH |
33 | |
| 34 | #define EAP_PWD_OPCODE_ID_EXCH 1 | |
| 35 | #define EAP_PWD_OPCODE_COMMIT_EXCH 2 | |
| 36 | #define EAP_PWD_OPCODE_CONFIRM_EXCH 3 | |
| 5ea93947 DH |
37 | #define EAP_PWD_GET_LENGTH_BIT(x) ((x) & 0x80) |
| 38 | #define EAP_PWD_SET_LENGTH_BIT(x) ((x) |= 0x80) | |
| 39 | #define EAP_PWD_GET_MORE_BIT(x) ((x) & 0x40) | |
| 40 | #define EAP_PWD_SET_MORE_BIT(x) ((x) |= 0x40) | |
| 41 | #define EAP_PWD_GET_EXCHANGE(x) ((x) & 0x3f) | |
| 42 | #define EAP_PWD_SET_EXCHANGE(x,y) ((x) |= (y)) | |
| df684d82 DH |
43 | |
| 44 | /* EAP-pwd-ID payload */ | |
| 45 | struct eap_pwd_id { | |
| 46 | be16 group_num; | |
| 47 | u8 random_function; | |
| 48 | #define EAP_PWD_DEFAULT_RAND_FUNC 1 | |
| 49 | u8 prf; | |
| 50 | #define EAP_PWD_DEFAULT_PRF 1 | |
| 51 | u8 token[4]; | |
| 52 | u8 prep; | |
| 53 | #define EAP_PWD_PREP_NONE 0 | |
| 54 | #define EAP_PWD_PREP_MS 1 | |
| 55 | u8 identity[0]; /* length inferred from payload */ | |
| 56 | } STRUCT_PACKED; | |
| 57 | ||
| 58 | /* common routines */ | |
| 59 | int compute_password_element(EAP_PWD_group *, u16, u8 *, int, u8 *, int, u8 *, | |
| 60 | int, u8 *); | |
| e4d7b22a | 61 | int compute_keys(EAP_PWD_group *, BN_CTX *, BIGNUM *, BIGNUM *, BIGNUM *, |
| 13e2574f | 62 | u8 *, u8 *, u32 *, u8 *, u8 *, u8 *); |
| daf10baf JM |
63 | struct crypto_hash * eap_pwd_h_init(void); |
| 64 | void eap_pwd_h_update(struct crypto_hash *hash, const u8 *data, size_t len); | |
| 65 | void eap_pwd_h_final(struct crypto_hash *hash, u8 *digest); | |
| df684d82 DH |
66 | |
| 67 | #endif /* EAP_PWD_COMMON_H */ |