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 1.10 2000/08/19 21:34:43 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_AGENTC_ADD_IDENTITY 17
39 #define SSH2_AGENTC_REMOVE_IDENTITY 18
40 #define SSH2_AGENTC_REMOVE_ALL_IDENTITIES 19
46 } AuthenticationConnection;
48 /* Returns the number of the authentication fd, or -1 if there is none. */
49 int ssh_get_authentication_socket();
52 * This should be called for any descriptor returned by
53 * ssh_get_authentication_socket(). Depending on the way the descriptor was
54 * obtained, this may close the descriptor.
56 void ssh_close_authentication_socket(int authfd);
59 * Opens and connects a private socket for communication with the
60 * authentication agent. Returns NULL if an error occurred and the
61 * connection could not be opened. The connection should be closed by the
62 * caller by calling ssh_close_authentication_connection().
64 AuthenticationConnection *ssh_get_authentication_connection();
67 * Closes the connection to the authentication agent and frees any associated
70 void ssh_close_authentication_connection(AuthenticationConnection *auth);
73 * Returns the first authentication identity held by the agent or NULL if
74 * no identies are available. Caller must free comment and key.
75 * Note that you cannot mix calls with different versions.
77 Key *ssh_get_first_identity(AuthenticationConnection *auth, char **comment, int version);
80 * Returns the next authentication identity for the agent. Other functions
81 * can be called between this and ssh_get_first_identity or two calls of this
82 * function. This returns NULL if there are no more identities. The caller
83 * must free key and comment after a successful return.
85 Key *ssh_get_next_identity(AuthenticationConnection *auth, char **comment, int version);
88 * Requests the agent to decrypt the given challenge. Returns true if the
89 * agent claims it was able to decrypt it.
92 ssh_decrypt_challenge(AuthenticationConnection *auth,
93 Key *key, BIGNUM * challenge,
94 unsigned char session_id[16],
95 unsigned int response_type,
96 unsigned char response[16]);
98 /* Requests the agent to sign data using key */
100 ssh_agent_sign(AuthenticationConnection *auth,
102 unsigned char **sigp, int *lenp,
103 unsigned char *data, int datalen);
106 * Adds an identity to the authentication server. This call is not meant to
107 * be used by normal applications. This returns true if the identity was
108 * successfully added.
111 ssh_add_identity(AuthenticationConnection *auth, Key *key,
112 const char *comment);
115 * Removes the identity from the authentication server. This call is not
116 * meant to be used by normal applications. This returns true if the
117 * identity was successfully added.
119 int ssh_remove_identity(AuthenticationConnection *auth, Key *key);
122 * Removes all identities from the authentication agent. This call is not
123 * meant to be used by normal applications. This returns true if the
124 * operation was successful.
126 int ssh_remove_all_identities(AuthenticationConnection *auth, int version);
128 #endif /* AUTHFD_H */