projects / thirdparty / hostap.git / blame
| Commit | Line | Data |
|---|---|---|
| 98efcc41 JM |
1 | /* |
| 2 | * Simultaneous authentication of equals | |
| cd9c2714 | 3 | * Copyright (c) 2012-2013, Jouni Malinen <j@w1.fi> |
| 98efcc41 JM |
4 | * |
| 5 | * This software may be distributed under the terms of the BSD license. | |
| 6 | * See README for more details. | |
| 7 | */ | |
| 8 | ||
| 9 | #ifndef SAE_H | |
| 10 | #define SAE_H | |
| 11 | ||
| 4925b303 JM |
12 | #define SAE_KCK_LEN 32 |
| 13 | #define SAE_PMK_LEN 32 | |
| 14 | #define SAE_PMKID_LEN 16 | |
| 15 | #define SAE_KEYSEED_KEY_LEN 32 | |
| fbfb0e65 | 16 | #define SAE_MAX_PRIME_LEN 512 |
| ce4479c1 | 17 | #define SAE_MAX_ECC_PRIME_LEN 66 |
| 7babd253 JM |
18 | #define SAE_COMMIT_MAX_LEN (2 + 3 * SAE_MAX_PRIME_LEN) |
| 19 | #define SAE_CONFIRM_MAX_LEN (2 + SAE_MAX_PRIME_LEN) | |
| 8e31e955 | 20 | |
| 6a58444d JM |
21 | /* Special value returned by sae_parse_commit() */ |
| 22 | #define SAE_SILENTLY_DISCARD 65535 | |
| 23 | ||
| 0ef29e0c | 24 | struct sae_temporary_data { |
| 4925b303 | 25 | u8 kck[SAE_KCK_LEN]; |
| b0f6124c | 26 | struct crypto_bignum *own_commit_scalar; |
| ce4479c1 JM |
27 | struct crypto_bignum *own_commit_element_ffc; |
| 28 | struct crypto_ec_point *own_commit_element_ecc; | |
| ce4479c1 JM |
29 | struct crypto_bignum *peer_commit_element_ffc; |
| 30 | struct crypto_ec_point *peer_commit_element_ecc; | |
| 4df61ba5 JM |
31 | struct crypto_ec_point *pwe_ecc; |
| 32 | struct crypto_bignum *pwe_ffc; | |
| 629c56d7 | 33 | struct crypto_bignum *sae_rand; |
| a46d72d7 JM |
34 | struct crypto_ec *ec; |
| 35 | int prime_len; | |
| fbfb0e65 | 36 | const struct dh_group *dh; |
| 388f5354 JM |
37 | const struct crypto_bignum *prime; |
| 38 | const struct crypto_bignum *order; | |
| fbfb0e65 JM |
39 | struct crypto_bignum *prime_buf; |
| 40 | struct crypto_bignum *order_buf; | |
| 872b7545 | 41 | struct wpabuf *anti_clogging_token; |
| 9be19d0b | 42 | char *pw_id; |
| 98efcc41 JM |
43 | }; |
| 44 | ||
| 9249afc8 JM |
45 | enum sae_state { |
| 46 | SAE_NOTHING, SAE_COMMITTED, SAE_CONFIRMED, SAE_ACCEPTED | |
| 47 | }; | |
| 48 | ||
| 0ef29e0c | 49 | struct sae_data { |
| 9249afc8 | 50 | enum sae_state state; |
| 0ef29e0c JM |
51 | u16 send_confirm; |
| 52 | u8 pmk[SAE_PMK_LEN]; | |
| 6c33eed3 | 53 | u8 pmkid[SAE_PMKID_LEN]; |
| 0ef29e0c JM |
54 | struct crypto_bignum *peer_commit_scalar; |
| 55 | int group; | |
| d8b841eb | 56 | unsigned int sync; /* protocol instance variable: Sync */ |
| abcbd060 | 57 | u16 rc; /* protocol instance variable: Rc (received send-confirm) */ |
| 0ef29e0c JM |
58 | struct sae_temporary_data *tmp; |
| 59 | }; | |
| 60 | ||
| a46d72d7 | 61 | int sae_set_group(struct sae_data *sae, int group); |
| b4fd3613 | 62 | void sae_clear_temp_data(struct sae_data *sae); |
| a46d72d7 JM |
63 | void sae_clear_data(struct sae_data *sae); |
| 64 | ||
| 8e31e955 JM |
65 | int sae_prepare_commit(const u8 *addr1, const u8 *addr2, |
| 66 | const u8 *password, size_t password_len, | |
| 9be19d0b | 67 | const char *identifier, struct sae_data *sae); |
| 146f6c9a | 68 | int sae_process_commit(struct sae_data *sae); |
| d136c376 | 69 | void sae_write_commit(struct sae_data *sae, struct wpabuf *buf, |
| 9be19d0b | 70 | const struct wpabuf *token, const char *identifier); |
| d136c376 | 71 | u16 sae_parse_commit(struct sae_data *sae, const u8 *data, size_t len, |
| 625f202a | 72 | const u8 **token, size_t *token_len, int *allowed_groups); |
| fb8fcc29 | 73 | void sae_write_confirm(struct sae_data *sae, struct wpabuf *buf); |
| f2e9818f | 74 | int sae_check_confirm(struct sae_data *sae, const u8 *data, size_t len); |
| a959a3b6 | 75 | u16 sae_group_allowed(struct sae_data *sae, int *allowed_groups, u16 group); |
| 9249afc8 | 76 | const char * sae_state_txt(enum sae_state state); |
| 8e31e955 | 77 | |
| 98efcc41 | 78 | #endif /* SAE_H */ |