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.
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
39 } AuthenticationConnection;
40 /* Returns the number of the authentication fd, or -1 if there is none. */
41 int ssh_get_authentication_socket();
44 * This should be called for any descriptor returned by
45 * ssh_get_authentication_socket(). Depending on the way the descriptor was
46 * obtained, this may close the descriptor.
48 void ssh_close_authentication_socket(int authfd);
51 * Opens and connects a private socket for communication with the
52 * authentication agent. Returns NULL if an error occurred and the
53 * connection could not be opened. The connection should be closed by the
54 * caller by calling ssh_close_authentication_connection().
56 AuthenticationConnection *ssh_get_authentication_connection();
59 * Closes the connection to the authentication agent and frees any associated
62 void ssh_close_authentication_connection(AuthenticationConnection * ac);
65 * Returns the first authentication identity held by the agent. Returns true
66 * if an identity is available, 0 otherwise. The caller must initialize the
67 * integers before the call, and free the comment after a successful call
68 * (before calling ssh_get_next_identity).
71 ssh_get_first_identity(AuthenticationConnection * connection,
72 BIGNUM * e, BIGNUM * n, char **comment);
75 * Returns the next authentication identity for the agent. Other functions
76 * can be called between this and ssh_get_first_identity or two calls of this
77 * function. This returns 0 if there are no more identities. The caller
78 * must free comment after a successful return.
81 ssh_get_next_identity(AuthenticationConnection * connection,
82 BIGNUM * e, BIGNUM * n, char **comment);
84 /* Requests the agent to decrypt the given challenge. Returns true if
85 the agent claims it was able to decrypt it. */
87 ssh_decrypt_challenge(AuthenticationConnection * auth,
88 BIGNUM * e, BIGNUM * n, BIGNUM * challenge,
89 unsigned char session_id[16],
90 unsigned int response_type,
91 unsigned char response[16]);
94 * Adds an identity to the authentication server. This call is not meant to
95 * be used by normal applications. This returns true if the identity was
99 ssh_add_identity(AuthenticationConnection * connection, RSA * key,
100 const char *comment);
103 * Removes the identity from the authentication server. This call is not
104 * meant to be used by normal applications. This returns true if the
105 * identity was successfully added.
107 int ssh_remove_identity(AuthenticationConnection * connection, RSA * key);
110 * Removes all identities from the authentication agent. This call is not
111 * meant to be used by normal applications. This returns true if the
112 * operation was successful.
114 int ssh_remove_all_identities(AuthenticationConnection * connection);
116 /* Closes the connection to the authentication agent. */
117 void ssh_close_authentication(AuthenticationConnection * connection);
119 #endif /* AUTHFD_H */