2 * Author: Tatu Ylonen <ylo@cs.hut.fi>
3 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
5 * Functions to interface with the SSH_AUTHENTICATION_FD socket.
7 * As far as I am concerned, the code I have written for this software
8 * can be used freely for any purpose. Any derived versions of this
9 * software must be clearly marked as such, and if the derived work is
10 * incompatible with the protocol description in the RFC file, it must be
11 * called by a name other than "ssh" or "Secure Shell".
14 /* RCSID("$OpenBSD: authfd.h,v 1.17 2001/06/26 04:59:59 markus Exp $"); */
21 /* Messages for the authentication agent connection. */
22 #define SSH_AGENTC_REQUEST_RSA_IDENTITIES 1
23 #define SSH_AGENT_RSA_IDENTITIES_ANSWER 2
24 #define SSH_AGENTC_RSA_CHALLENGE 3
25 #define SSH_AGENT_RSA_RESPONSE 4
26 #define SSH_AGENT_FAILURE 5
27 #define SSH_AGENT_SUCCESS 6
28 #define SSH_AGENTC_ADD_RSA_IDENTITY 7
29 #define SSH_AGENTC_REMOVE_RSA_IDENTITY 8
30 #define SSH_AGENTC_REMOVE_ALL_RSA_IDENTITIES 9
32 /* private OpenSSH extensions for SSH2 */
33 #define SSH2_AGENTC_REQUEST_IDENTITIES 11
34 #define SSH2_AGENT_IDENTITIES_ANSWER 12
35 #define SSH2_AGENTC_SIGN_REQUEST 13
36 #define SSH2_AGENT_SIGN_RESPONSE 14
37 #define SSH2_AGENTC_ADD_IDENTITY 17
38 #define SSH2_AGENTC_REMOVE_IDENTITY 18
39 #define SSH2_AGENTC_REMOVE_ALL_IDENTITIES 19
42 #define SSH_AGENTC_ADD_SMARTCARD_KEY 20
43 #define SSH_AGENTC_REMOVE_SMARTCARD_KEY 21
45 /* additional error code for ssh.com's ssh-agent2 */
46 #define SSH_COM_AGENT2_FAILURE 102
48 #define SSH_AGENT_OLD_SIGNATURE 0x01
55 } AuthenticationConnection;
57 /* Returns the number of the authentication fd, or -1 if there is none. */
58 int ssh_get_authentication_socket(void);
61 * This should be called for any descriptor returned by
62 * ssh_get_authentication_socket(). Depending on the way the descriptor was
63 * obtained, this may close the descriptor.
65 void ssh_close_authentication_socket(int authfd);
68 * Opens and connects a private socket for communication with the
69 * authentication agent. Returns NULL if an error occurred and the
70 * connection could not be opened. The connection should be closed by the
71 * caller by calling ssh_close_authentication_connection().
73 AuthenticationConnection *ssh_get_authentication_connection(void);
76 * Closes the connection to the authentication agent and frees any associated
79 void ssh_close_authentication_connection(AuthenticationConnection *auth);
82 * Returns the number authentication identity held by the agent.
84 int ssh_get_num_identities(AuthenticationConnection *auth, int version);
87 * Returns the first authentication identity held by the agent or NULL if
88 * no identies are available. Caller must free comment and key.
89 * Note that you cannot mix calls with different versions.
91 Key *ssh_get_first_identity(AuthenticationConnection *auth, char **comment, int version);
94 * Returns the next authentication identity for the agent. Other functions
95 * can be called between this and ssh_get_first_identity or two calls of this
96 * function. This returns NULL if there are no more identities. The caller
97 * must free key and comment after a successful return.
99 Key *ssh_get_next_identity(AuthenticationConnection *auth, char **comment, int version);
102 * Requests the agent to decrypt the given challenge. Returns true if the
103 * agent claims it was able to decrypt it.
106 ssh_decrypt_challenge(AuthenticationConnection *auth,
107 Key *key, BIGNUM * challenge,
108 u_char session_id[16],
110 u_char response[16]);
112 /* Requests the agent to sign data using key */
114 ssh_agent_sign(AuthenticationConnection *auth,
116 u_char **sigp, int *lenp,
117 u_char *data, int datalen);
120 * Adds an identity to the authentication server. This call is not meant to
121 * be used by normal applications. This returns true if the identity was
122 * successfully added.
125 ssh_add_identity(AuthenticationConnection *auth, Key *key,
126 const char *comment);
129 * Removes the identity from the authentication server. This call is not
130 * meant to be used by normal applications. This returns true if the
131 * identity was successfully added.
133 int ssh_remove_identity(AuthenticationConnection *auth, Key *key);
136 * Removes all identities from the authentication agent. This call is not
137 * meant to be used by normal applications. This returns true if the
138 * operation was successful.
140 int ssh_remove_all_identities(AuthenticationConnection *auth, int version);
142 int ssh_update_card(AuthenticationConnection *auth, int add, int reader_id);
144 #endif /* AUTHFD_H */