libssh2_userauth_publickey_frommemory(3)

NAME
libssh2_userauth_publickey_frommemory - authenticate a session with a public key, read from memory

SYNOPSIS
#include <libssh2.h>
int
libssh2_userauth_publickey_frommemory(LIBSSH2_SESSION *session,
                                      const char *username,
                                      size_t username_len,
                                      const char *publickeydata,
                                      size_t publickeydata_len,
                                      const char *privatekeydata,
                                      size_t privatekeydata_len,
                                      const char *passphrase);

DESCRIPTION
This function allows to authenticate a session with a public key read from memory. It is only supported when libssh2 is backed by OpenSSL. session - Session instance as returned by libssh2_session_init_ex(3) username - Remote user name to authenticate as. username_len - Length of username. publickeydata - Buffer containing the contents of a public key file. publickeydata_len - Length of public key data. privatekeydata - Buffer containing the contents of a private key file. privatekeydata_len - Length of private key data. passphrase - Passphrase to use when decoding private key file. Attempt public key authentication using a PEM encoded private key file stored in memory.

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 is not 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.

AVAILABILITY
libssh2_userauth_publickey_frommemory was added in libssh2 1.6.0

SEE ALSO
libssh2_session_init_ex(3)