1 /* $OpenBSD: authfd.h,v 1.51 2021/12/19 22:10:24 djm Exp $ */
4 * Author: Tatu Ylonen <ylo@cs.hut.fi>
5 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
7 * Functions to interface with the SSH_AUTHENTICATION_FD socket.
9 * As far as I am concerned, the code I have written for this software
10 * can be used freely for any purpose. Any derived versions of this
11 * software must be clearly marked as such, and if the derived work is
12 * incompatible with the protocol description in the RFC file, it must be
13 * called by a name other than "ssh" or "Secure Shell".
22 /* List of identities returned by ssh_fetch_identitylist() */
23 struct ssh_identitylist
{
29 /* Key destination restrictions */
30 struct dest_constraint_hop
{
31 char *user
; /* wildcards allowed */
32 char *hostname
; /* used to matching cert principals and for display */
34 u_int nkeys
; /* number of entries in *both* 'keys' and 'key_is_ca' */
38 struct dest_constraint
{
39 struct dest_constraint_hop from
;
40 struct dest_constraint_hop to
;
43 int ssh_get_authentication_socket(int *fdp
);
44 int ssh_get_authentication_socket_path(const char *authsocket
, int *fdp
);
45 void ssh_close_authentication_socket(int sock
);
47 int ssh_lock_agent(int sock
, int lock
, const char *password
);
48 int ssh_fetch_identitylist(int sock
, struct ssh_identitylist
**idlp
);
49 void ssh_free_identitylist(struct ssh_identitylist
*idl
);
50 int ssh_add_identity_constrained(int sock
, struct sshkey
*key
,
51 const char *comment
, u_int life
, u_int confirm
, u_int maxsign
,
52 const char *provider
, struct dest_constraint
**dest_constraints
,
53 size_t ndest_constraints
);
54 int ssh_agent_has_key(int sock
, const struct sshkey
*key
);
55 int ssh_remove_identity(int sock
, const struct sshkey
*key
);
56 int ssh_update_card(int sock
, int add
, const char *reader_id
,
57 const char *pin
, u_int life
, u_int confirm
,
58 struct dest_constraint
**dest_constraints
,
59 size_t ndest_constraints
);
60 int ssh_remove_all_identities(int sock
, int version
);
62 int ssh_agent_sign(int sock
, const struct sshkey
*key
,
63 u_char
**sigp
, size_t *lenp
,
64 const u_char
*data
, size_t datalen
, const char *alg
, u_int compat
);
66 int ssh_agent_bind_hostkey(int sock
, const struct sshkey
*key
,
67 const struct sshbuf
*session_id
, const struct sshbuf
*signature
,
70 /* Messages for the authentication agent connection. */
71 #define SSH_AGENTC_REQUEST_RSA_IDENTITIES 1
72 #define SSH_AGENT_RSA_IDENTITIES_ANSWER 2
73 #define SSH_AGENTC_RSA_CHALLENGE 3
74 #define SSH_AGENT_RSA_RESPONSE 4
75 #define SSH_AGENT_FAILURE 5
76 #define SSH_AGENT_SUCCESS 6
77 #define SSH_AGENTC_ADD_RSA_IDENTITY 7
78 #define SSH_AGENTC_REMOVE_RSA_IDENTITY 8
79 #define SSH_AGENTC_REMOVE_ALL_RSA_IDENTITIES 9
81 /* private OpenSSH extensions for SSH2 */
82 #define SSH2_AGENTC_REQUEST_IDENTITIES 11
83 #define SSH2_AGENT_IDENTITIES_ANSWER 12
84 #define SSH2_AGENTC_SIGN_REQUEST 13
85 #define SSH2_AGENT_SIGN_RESPONSE 14
86 #define SSH2_AGENTC_ADD_IDENTITY 17
87 #define SSH2_AGENTC_REMOVE_IDENTITY 18
88 #define SSH2_AGENTC_REMOVE_ALL_IDENTITIES 19
91 #define SSH_AGENTC_ADD_SMARTCARD_KEY 20
92 #define SSH_AGENTC_REMOVE_SMARTCARD_KEY 21
94 /* lock/unlock the agent */
95 #define SSH_AGENTC_LOCK 22
96 #define SSH_AGENTC_UNLOCK 23
98 /* add key with constraints */
99 #define SSH_AGENTC_ADD_RSA_ID_CONSTRAINED 24
100 #define SSH2_AGENTC_ADD_ID_CONSTRAINED 25
101 #define SSH_AGENTC_ADD_SMARTCARD_KEY_CONSTRAINED 26
103 /* generic extension mechanism */
104 #define SSH_AGENTC_EXTENSION 27
106 #define SSH_AGENT_CONSTRAIN_LIFETIME 1
107 #define SSH_AGENT_CONSTRAIN_CONFIRM 2
108 #define SSH_AGENT_CONSTRAIN_MAXSIGN 3
109 #define SSH_AGENT_CONSTRAIN_EXTENSION 255
111 /* extended failure messages */
112 #define SSH2_AGENT_FAILURE 30
114 /* additional error code for ssh.com's ssh-agent2 */
115 #define SSH_COM_AGENT2_FAILURE 102
117 #define SSH_AGENT_OLD_SIGNATURE 0x01
118 #define SSH_AGENT_RSA_SHA2_256 0x02
119 #define SSH_AGENT_RSA_SHA2_512 0x04
121 #endif /* AUTHFD_H */