LIMITED POWER OF ATTORNEY
FOR SECTION 16 REPORTING OBLIGATIONS

        Know all these presents, that the undersigned hereby makes,
Constitutes and appoints each of F. William Conner, James D. Kendry, David
Wagner and Jennifer Gyger signing singly and each acting individually, as the
undersigned's true and lawful attorney-in-fact with full power and authority as
hereinafter described to:

       (1) execute for and on behalf of the undersigned, in the
undersigned's capacity as an officer and/or director of Entrust, Inc. (the
"Company"), Forms 3, 4, and 5 (including any amendments thereto) in accordance
with Section 16(a)of the Securities Exchange Act of 1934 and the rules
thereunder (the "Exchange Act");

       (2) do and perform any and all acts for and on behalf of the
undersigned which may be necessary or desirable to prepare, complete and execute
any such Form 3, 4, or 5, prepare, complete and execute any amendment or
amendments thereto, and timely deliver and file such form with the United States
Securities and Exchange Commission and any stock exchange or similar authority;

       (3) seek or obtain, as the undersigned's representative an on the
undersigned's behalf, information regarding transactions in the Company's
securities from any third party, including brokers, employee benefit plan
administrators and trustees, and the undersigned hereby authorizes any such
person to release any such information to such attorney-in-fact and approves and
ratifies any such release of information; and

       (4) take any other action of any type whatsoever in connection
with the foregoing which, in the opinion of such attorney-in-fact, may be of
benefit to,in the best interest of, or legally required by, the undersigned, it
being understood that the documents executed by such attorney-in-fact on
behalf of the undersigned pursuant to this Power of Attorney shall be in such
form and shall contain such terms and conditions as such attorney-in-fact may
approve in such attorney-in-fact's discretion.

       The undersigned hereby grants to each such attorney-in-fact full
Power and authority to do and perform any and every act and thing whatsoever
requisite, necessary, or proper to be done in the exercise of any of
the rights and powers herein granted, as fully to all intents and purposes as
the undersigned might or could do if personally present, with full power of
substitution or revocation, hereby ratifying and confirming all that
such attorney-in-fact, or such attorney-in-fact's substitute or substitutes,
shall lawfully do or cause to be done by virtue of this power of attorney and
the rights and powers herein granted.  The undersigned acknowledges that
the foregoing attorneys-in-fact, in serving in such capacity at the request
of the undersigned, are not assuming or relieving, nor is the Company assuming
nor relieving, any of the undersigned's responsibilities to company with
Section16 of the Exchange Act.  The undersigned acknowledges that neither the
Company nor the foregoing attorneys-in-fact assume (i) any liability for the
undersigned's responsibility to comply with the requirement of the Exchange Act,
(ii) any liability of the undersigned for any failure to comply with such
requirements, or (iii) any obligation or liability of the undersigned for profit
disgorgement under Section 16(b) of the Exchange Act.

       This Power of Attorney shall remain in full force and effect
until the undersigned is no longer required to file Forms 3, 4, or 5 with
respect to the undersigned's holdings of and transactions in securities issued
by the Company,unless earlier revoked by the undersigned in a signed writing
delivered to the foregoing attorneys-in-fact.

       IN WITNESS WHEREOF, the undersigned has caused this Power of
Attorney to be executed as of this 29 day of April, 2005.


                                                                /s/ F.
William Conner
                                                                F.
William Conner