lib/keychain.h

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /* key-chain for authentication.
   3  * Copyright (C) 2000 Kunihiro Ishiguro
   4  */
   5
   6 #ifndef _ZEBRA_KEYCHAIN_H
   7 #define _ZEBRA_KEYCHAIN_H
   8
   9 #include "qobj.h"
  10
  11 #ifdef __cplusplus
  12 extern "C" {
  13 #endif
  14
  15 enum keychain_hash_algo {
  16         KEYCHAIN_ALGO_NULL,
  17         KEYCHAIN_ALGO_MD5,
  18         KEYCHAIN_ALGO_HMAC_SHA1,
  19         KEYCHAIN_ALGO_HMAC_SHA256,
  20         KEYCHAIN_ALGO_HMAC_SHA384,
  21         KEYCHAIN_ALGO_HMAC_SHA512,
  22         KEYCHAIN_ALGO_MAX
  23 };
  24
  25 #define KEYCHAIN_MD5_HASH_SIZE 16
  26 #define KEYCHAIN_HMAC_SHA1_HASH_SIZE 20
  27 #define KEYCHAIN_HMAC_SHA256_HASH_SIZE 32
  28 #define KEYCHAIN_HMAC_SHA384_HASH_SIZE 48
  29 #define KEYCHAIN_HMAC_SHA512_HASH_SIZE 64
  30 #define KEYCHAIN_MAX_HASH_SIZE 64
  31
  32 #define KEYCHAIN_ALGO_MD5_INTERNAL_BLK_SIZE 16
  33 #define KEYCHAIN_ALGO_SHA1_INTERNAL_BLK_SIZE 64
  34 #define KEYCHAIN_ALGO_SHA256_INTERNAL_BLK_SIZE 64
  35 #define KEYCHAIN_ALGO_SHA384_INTERNAL_BLK_SIZE 128
  36 #define KEYCHAIN_ALGO_SHA512_INTERNAL_BLK_SIZE 128
  37 #define KEYCHAIN_ALGO_MAX_INTERNAL_BLK_SIZE 128
  38
  39 struct keychain_algo_info {
  40         enum keychain_hash_algo key;
  41         const char *name;
  42         uint16_t length;
  43         uint16_t block;
  44         const char *desc;
  45 };
  46
  47 extern const struct keychain_algo_info algo_info[];
  48 uint16_t keychain_get_block_size(enum keychain_hash_algo key);
  49 uint16_t keychain_get_hash_len(enum keychain_hash_algo key);
  50 const char *keychain_get_description(enum keychain_hash_algo key);
  51 struct keychain_algo_info
  52 keychain_get_hash_algo_info(enum keychain_hash_algo key);
  53 enum keychain_hash_algo keychain_get_algo_id_by_name(const char *name);
  54 const char *keychain_get_algo_name_by_id(enum keychain_hash_algo key);
  55
  56 struct keychain {
  57         char *name;
  58
  59         struct list *key;
  60
  61         QOBJ_FIELDS;
  62 };
  63 DECLARE_QOBJ_TYPE(keychain);
  64
  65 struct key_range {
  66         time_t start;
  67         time_t end;
  68
  69         uint8_t duration;
  70 };
  71
  72 struct key {
  73         uint32_t index;
  74
  75         char *string;
  76         enum keychain_hash_algo hash_algo;
  77         struct key_range send;
  78         struct key_range accept;
  79
  80         QOBJ_FIELDS;
  81 };
  82 DECLARE_QOBJ_TYPE(key);
  83
  84 extern void keychain_init(void);
  85 extern struct keychain *keychain_lookup(const char *);
  86 extern struct key *key_lookup_for_accept(const struct keychain *, uint32_t);
  87 extern struct key *key_match_for_accept(const struct keychain *, const char *);
  88 extern struct key *key_lookup_for_send(const struct keychain *);
  89 const char *keychain_algo_str(enum keychain_hash_algo hash_algo);
  90 #ifdef __cplusplus
  91 }
  92 #endif
  93
  94 #endif /* _ZEBRA_KEYCHAIN_H */