hostkey_method_ssh_rsa_sig_verify(LIBSSH2_SESSION * session,
                                  const unsigned char *sig,
                                  size_t sig_len,
                                  const unsigned char *m,
                                  size_t m_len, void **abstract)
{
    libssh2_rsa_ctx *rsactx = (libssh2_rsa_ctx *) (*abstract);
    (void) session;

    /* Skip past keyname_len(4) + keyname(7){"ssh-rsa"} + signature_len(4) */
    sig += 15;
    sig_len -= 15;
    return _libssh2_rsa_sha1_verify(rsactx, sig, sig_len, m, m_len);
}
hostkey_method_ssh_rsa_sig_verify(LIBSSH2_SESSION * session,
                                  const unsigned char *sig,
                                  size_t sig_len,
                                  const unsigned char *m,
                                  size_t m_len, void **abstract)
{
    libssh2_rsa_ctx *rsactx = (libssh2_rsa_ctx *) (*abstract);
    (void) session;

     
    sig += 15;
    sig_len -= 15;
    return _libssh2_rsa_sha1_verify(rsactx, sig, sig_len, m, m_len);
}