1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 | /* SPDX-License-Identifier: GPL-2.0-or-later */ /* RxRPC key type * * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) */ #ifndef _KEYS_RXRPC_TYPE_H #define _KEYS_RXRPC_TYPE_H #include <linux/key.h> /* * key type for AF_RXRPC keys */ extern struct key_type key_type_rxrpc; extern struct key *rxrpc_get_null_key(const char *); /* * RxRPC key for Kerberos IV (type-2 security) */ struct rxkad_key { u32 vice_id; u32 start; /* time at which ticket starts */ u32 expiry; /* time at which ticket expires */ u32 kvno; /* key version number */ u8 primary_flag; /* T if key for primary cell for this user */ u16 ticket_len; /* length of ticket[] */ u8 session_key[8]; /* DES session key */ u8 ticket[0]; /* the encrypted ticket */ }; /* * Kerberos 5 principal * name/name/name@realm */ struct krb5_principal { u8 n_name_parts; /* N of parts of the name part of the principal */ char **name_parts; /* parts of the name part of the principal */ char *realm; /* parts of the realm part of the principal */ }; /* * Kerberos 5 tagged data */ struct krb5_tagged_data { /* for tag value, see /usr/include/krb5/krb5.h * - KRB5_AUTHDATA_* for auth data * - */ s32 tag; u32 data_len; u8 *data; }; /* * RxRPC key for Kerberos V (type-5 security) */ struct rxk5_key { u64 authtime; /* time at which auth token generated */ u64 starttime; /* time at which auth token starts */ u64 endtime; /* time at which auth token expired */ u64 renew_till; /* time to which auth token can be renewed */ s32 is_skey; /* T if ticket is encrypted in another ticket's * skey */ s32 flags; /* mask of TKT_FLG_* bits (krb5/krb5.h) */ struct krb5_principal client; /* client principal name */ struct krb5_principal server; /* server principal name */ u16 ticket_len; /* length of ticket */ u16 ticket2_len; /* length of second ticket */ u8 n_authdata; /* number of authorisation data elements */ u8 n_addresses; /* number of addresses */ struct krb5_tagged_data session; /* session data; tag is enctype */ struct krb5_tagged_data *addresses; /* addresses */ u8 *ticket; /* krb5 ticket */ u8 *ticket2; /* second krb5 ticket, if related to ticket (via * DUPLICATE-SKEY or ENC-TKT-IN-SKEY) */ struct krb5_tagged_data *authdata; /* authorisation data */ }; /* * list of tokens attached to an rxrpc key */ struct rxrpc_key_token { u16 security_index; /* RxRPC header security index */ struct rxrpc_key_token *next; /* the next token in the list */ union { struct rxkad_key *kad; struct rxk5_key *k5; }; }; /* * structure of raw payloads passed to add_key() or instantiate key */ struct rxrpc_key_data_v1 { u16 security_index; u16 ticket_length; u32 expiry; /* time_t */ u32 kvno; u8 session_key[8]; u8 ticket[0]; }; /* * AF_RXRPC key payload derived from XDR format * - based on openafs-1.4.10/src/auth/afs_token.xg */ #define AFSTOKEN_LENGTH_MAX 16384 /* max payload size */ #define AFSTOKEN_STRING_MAX 256 /* max small string length */ #define AFSTOKEN_DATA_MAX 64 /* max small data length */ #define AFSTOKEN_CELL_MAX 64 /* max cellname length */ #define AFSTOKEN_MAX 8 /* max tokens per payload */ #define AFSTOKEN_BDATALN_MAX 16384 /* max big data length */ #define AFSTOKEN_RK_TIX_MAX 12000 /* max RxKAD ticket size */ #define AFSTOKEN_GK_KEY_MAX 64 /* max GSSAPI key size */ #define AFSTOKEN_GK_TOKEN_MAX 16384 /* max GSSAPI token size */ #define AFSTOKEN_K5_COMPONENTS_MAX 16 /* max K5 components */ #define AFSTOKEN_K5_NAME_MAX 128 /* max K5 name length */ #define AFSTOKEN_K5_REALM_MAX 64 /* max K5 realm name length */ #define AFSTOKEN_K5_TIX_MAX 16384 /* max K5 ticket size */ #define AFSTOKEN_K5_ADDRESSES_MAX 16 /* max K5 addresses */ #define AFSTOKEN_K5_AUTHDATA_MAX 16 /* max K5 pieces of auth data */ /* * Truncate a time64_t to the range from 1970 to 2106 as in the network * protocol. */ static inline u32 rxrpc_time64_to_u32(time64_t time) { if (time < 0) return 0; if (time > UINT_MAX) return UINT_MAX; return (u32)time; } /* * Extend u32 back to time64_t using the same 1970-2106 range. */ static inline time64_t rxrpc_u32_to_time64(u32 time) { return (time64_t)time; } #endif /* _KEYS_RXRPC_TYPE_H */ |