EXHIBIT 23.1 CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS We consent to the references to our firm under the captions "Selected Financial Data" and "Experts" and to the use of our report dated February 19, 1999, except for Note 6, as to which the date is May 5, 1999, with respect to InterTrust Technologies Corporation in Amendment No. 3 to the Registration Statement (Form S-1) and related Prospectus of InterTrust Technologies Corporation for the registration of shares of its common stock. /s/ Ernst & Young LLP Palo Alto, California September 28, 1999