5 * Author: Tatu Ylonen <ylo@cs.hut.fi>
7 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
10 * Created: Wed Mar 29 01:17:41 1995 ylo
12 * Functions to interface with the SSH_AUTHENTICATION_FD socket.
16 /* RCSID("$OpenBSD: authfd.h,v 1.9 2000/07/16 08:27:21 markus Exp $"); */
23 /* Messages for the authentication agent connection. */
24 #define SSH_AGENTC_REQUEST_RSA_IDENTITIES 1
25 #define SSH_AGENT_RSA_IDENTITIES_ANSWER 2
26 #define SSH_AGENTC_RSA_CHALLENGE 3
27 #define SSH_AGENT_RSA_RESPONSE 4
28 #define SSH_AGENT_FAILURE 5
29 #define SSH_AGENT_SUCCESS 6
30 #define SSH_AGENTC_ADD_RSA_IDENTITY 7
31 #define SSH_AGENTC_REMOVE_RSA_IDENTITY 8
32 #define SSH_AGENTC_REMOVE_ALL_RSA_IDENTITIES 9
34 #define SSH2_AGENTC_REQUEST_IDENTITIES 11
35 #define SSH2_AGENT_IDENTITIES_ANSWER 12
36 #define SSH2_AGENTC_SIGN_REQUEST 13
37 #define SSH2_AGENT_SIGN_RESPONSE 14
38 #define SSH2_AGENT_FAILURE SSH_AGENT_FAILURE
39 #define SSH2_AGENT_SUCCESS SSH_AGENT_SUCCESS
40 #define SSH2_AGENTC_ADD_IDENTITY 17
41 #define SSH2_AGENTC_REMOVE_IDENTITY 18
42 #define SSH2_AGENTC_REMOVE_ALL_IDENTITIES 19
49 } AuthenticationConnection;
50 /* Returns the number of the authentication fd, or -1 if there is none. */
51 int ssh_get_authentication_socket();
54 * This should be called for any descriptor returned by
55 * ssh_get_authentication_socket(). Depending on the way the descriptor was
56 * obtained, this may close the descriptor.
58 void ssh_close_authentication_socket(int authfd);
61 * Opens and connects a private socket for communication with the
62 * authentication agent. Returns NULL if an error occurred and the
63 * connection could not be opened. The connection should be closed by the
64 * caller by calling ssh_close_authentication_connection().
66 AuthenticationConnection *ssh_get_authentication_connection();
69 * Closes the connection to the authentication agent and frees any associated
72 void ssh_close_authentication_connection(AuthenticationConnection * ac);
75 * Returns the first authentication identity held by the agent. Returns true
76 * if an identity is available, 0 otherwise. The caller must initialize the
77 * integers before the call, and free the comment after a successful call
78 * (before calling ssh_get_next_identity).
81 ssh_get_first_identity(AuthenticationConnection * connection,
82 BIGNUM * e, BIGNUM * n, char **comment);
85 * Returns the next authentication identity for the agent. Other functions
86 * can be called between this and ssh_get_first_identity or two calls of this
87 * function. This returns 0 if there are no more identities. The caller
88 * must free comment after a successful return.
91 ssh_get_next_identity(AuthenticationConnection * connection,
92 BIGNUM * e, BIGNUM * n, char **comment);
94 /* Requests the agent to decrypt the given challenge. Returns true if
95 the agent claims it was able to decrypt it. */
97 ssh_decrypt_challenge(AuthenticationConnection * auth,
98 BIGNUM * e, BIGNUM * n, BIGNUM * challenge,
99 unsigned char session_id[16],
100 unsigned int response_type,
101 unsigned char response[16]);
104 * Adds an identity to the authentication server. This call is not meant to
105 * be used by normal applications. This returns true if the identity was
106 * successfully added.
109 ssh_add_identity(AuthenticationConnection * connection, Key *key,
110 const char *comment);
113 * Removes the identity from the authentication server. This call is not
114 * meant to be used by normal applications. This returns true if the
115 * identity was successfully added.
117 int ssh_remove_identity(AuthenticationConnection * connection, RSA * key);
120 * Removes all identities from the authentication agent. This call is not
121 * meant to be used by normal applications. This returns true if the
122 * operation was successful.
124 int ssh_remove_all_identities(AuthenticationConnection * connection);
126 /* Closes the connection to the authentication agent. */
127 void ssh_close_authentication(AuthenticationConnection * connection);
129 #endif /* AUTHFD_H */