libssh2_userauth_publickey (3)

#include <libssh2.h>

int libssh2_userauth_publickey(LIBSSH2_SESSION *session,
                               const char *user,
                               const unsigned char *pubkeydata,
                               size_t pubkeydata_len,
                               sign_callback,
                               void **abstract);

Authenticate with the sign_callback callback that matches the prototype below

int name(LIBSSH2_SESSION *session, unsigned char **sig, size_t *sig_len,
         const unsigned char *data, size_t data_len, void **abstract);

This function gets called...

Return 0 on success or negative on failure.

libssh2_userauth_publickey_fromfile_ex(3)