05-22-2007
Quote:
The reason behind is that the set of public-private keys are unique for each host and in order that the "server" communicates to the "client" on ssh we need to generate this unique public key which when copied onto the "clients"
would able to authenticate the "server".
But my question was, if we already have a unique public-private key pair, would ne need to generate a new public key on the server?
Maybe, if the key pair has stopped working due to some reason?
Thanks,
Rahul.
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LEARN ABOUT DEBIAN
libssh2_userauth_publickey_fromfile_ex
libssh2_userauth_publickey_fromfile(3) libssh2 manual libssh2_userauth_publickey_fromfile(3)
NAME
libssh2_userauth_publickey_fromfile - authenticate a session with a public key, read from a file
SYNOPSIS
#include <libssh2.h>
int libssh2_userauth_publickey_fromfile_ex(LIBSSH2_SESSION *session,
const char *username,
const char *publickey,
const char *privatekey,
const char *passphrase);
DESCRIPTION
session - Session instance as returned by libssh2_session_init_ex(3)
username - Remote user name to authenticate as.
username_len - Length of username.
publickey - Path and name of public key file. (e.g. /etc/ssh/hostkey.pub)
privatekey - Path and name of private key file. (e.g. /etc/ssh/hostkey)
passphrase - Passphrase to use when decoding private key file.
Attempt public key authentication using a PEM encoded private key file stored on disk
RETURN VALUE
Return 0 on success or negative on failure. It returns LIBSSH2_ERROR_EAGAIN when it would otherwise block. While LIBSSH2_ERROR_EAGAIN is a
negative number, it isn't really a failure per se.
ERRORS
LIBSSH2_ERROR_ALLOC - An internal memory allocation call failed.
LIBSSH2_ERROR_SOCKET_SEND - Unable to send data on socket.
LIBSSH2_ERROR_SOCKET_TIMEOUT -
LIBSSH2_ERROR_PUBLICKEY_UNVERIFIED - The username/public key combination was invalid.
LIBSSH2_ERROR_AUTHENTICATION_FAILED - Authentication using the supplied public key was not accepted.
SEE ALSO
libssh2_session_init_ex(3)
libssh2 0.15 1 Jun 2007 libssh2_userauth_publickey_fromfile(3)