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 1.11 2000/09/07 20:27:49 deraadt 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 #define SSH2_AGENTC_REQUEST_IDENTITIES 11
33 #define SSH2_AGENT_IDENTITIES_ANSWER 12
34 #define SSH2_AGENTC_SIGN_REQUEST 13
35 #define SSH2_AGENT_SIGN_RESPONSE 14
36 #define SSH2_AGENTC_ADD_IDENTITY 17
37 #define SSH2_AGENTC_REMOVE_IDENTITY 18
38 #define SSH2_AGENTC_REMOVE_ALL_IDENTITIES 19
44 } AuthenticationConnection;
46 /* Returns the number of the authentication fd, or -1 if there is none. */
47 int ssh_get_authentication_socket();
50 * This should be called for any descriptor returned by
51 * ssh_get_authentication_socket(). Depending on the way the descriptor was
52 * obtained, this may close the descriptor.
54 void ssh_close_authentication_socket(int authfd);
57 * Opens and connects a private socket for communication with the
58 * authentication agent. Returns NULL if an error occurred and the
59 * connection could not be opened. The connection should be closed by the
60 * caller by calling ssh_close_authentication_connection().
62 AuthenticationConnection *ssh_get_authentication_connection();
65 * Closes the connection to the authentication agent and frees any associated
68 void ssh_close_authentication_connection(AuthenticationConnection *auth);
71 * Returns the first authentication identity held by the agent or NULL if
72 * no identies are available. Caller must free comment and key.
73 * Note that you cannot mix calls with different versions.
75 Key *ssh_get_first_identity(AuthenticationConnection *auth, char **comment, int version);
78 * Returns the next authentication identity for the agent. Other functions
79 * can be called between this and ssh_get_first_identity or two calls of this
80 * function. This returns NULL if there are no more identities. The caller
81 * must free key and comment after a successful return.
83 Key *ssh_get_next_identity(AuthenticationConnection *auth, char **comment, int version);
86 * Requests the agent to decrypt the given challenge. Returns true if the
87 * agent claims it was able to decrypt it.
90 ssh_decrypt_challenge(AuthenticationConnection *auth,
91 Key *key, BIGNUM * challenge,
92 unsigned char session_id[16],
93 unsigned int response_type,
94 unsigned char response[16]);
96 /* Requests the agent to sign data using key */
98 ssh_agent_sign(AuthenticationConnection *auth,
100 unsigned char **sigp, int *lenp,
101 unsigned char *data, int datalen);
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 *auth, 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 *auth, Key *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 *auth, int version);
126 #endif /* AUTHFD_H */