Exhibit 99

Press Release

Product Revenue Growth, New Customer Wins Drive Strong

Second Quarter 2005 Results for Entrust

DALLAS – July 19, 2005 – Entrust, Inc. [Nasdaq: ENTU], a world leader in securing digital identities and information, today announced financial results for its fiscal quarter ended June 30, 2005.

“I am pleased with three significant transactions in the quarter. The U.S. Department of State increased its deployment of our desktop solution and selected our digital signature technology for use in the next-generation passport. The Spanish government also selected our digital certificate technology to incorporate into its national ID card. And lastly, we were able to achieve our first major award for Entrust IdentityGuard – our second factor of authentication for the masses,” said Bill Conner, Entrust Chairman, President and CEO. “The Entrust team continues to execute against our plan with its fourth consecutive quarter of product revenue growth. With this quarter’s financial performance, Entrust has exceeded its original revenue and earnings guidance for the first half of 2005. Our second-half guidance reflects the momentum we are seeing in our new products, new customers and the increase in our run rate business.”

Revenue for the second quarter was $24.8 million, an increase of 27% from $19.5 million in Q2, 2004, and a slight decrease from $24.9 million in Q1, 2005. Revenue in the second quarter was driven by product revenue, which increased 102% from Q2, 2004, and increased 17% from Q1, 2005. Year-to-date revenue increased 17% over the same period in 2004 and product revenue increased 47% over the same period in 2004.

Entrust recorded Q2, 2005, pro forma (non-GAAP) net income of $1.3 million, or $0.02 per share, compared to a Q2, 2004 pro forma net loss of $2.5 million, or $0.04 per share, and Q1, 2005 pro forma net income of $1.2 million, or $0.02 per share. The pro forma (non-GAAP) net income figures exclude approximately $190 thousand of purchased intangibles amortization in cost of goods sold and approximately $19 thousand of amortization of intangible assets in operating expenses. Entrust recorded Q2, 2005 net income, calculated in accordance with GAAP, of $1.1 million, or $0.02 per share, compared to a Q2, 2004 net loss of $2.6 million, or $0.04 per share, and Q1, 2005, net income of $1.0 million, or $0.02 per share. Year-to-date net income, calculated in accordance with GAAP, has increased $4.1 million, or $0.06 per share, over 2004. Entrust also repurchased approximately 2.7 million shares in the quarter as part of its share repurchase program. The company ended the second quarter, 2005 with $86.6 million in cash and marketable securities and no debt.

Business and Financial Metrics:

Second Quarter, 2005

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“I am pleased that the team was able to exceed the goals we had set at the beginning of the year. We grew year-to-date product revenues 47 percent, and grew profitability even faster,” said David Wagner, Entrust Chief Financial Officer. “We are equally positive on our outlook for the remainder of 2005 due to the growth we are seeing in the number of new product transactions under $500,000 and due to the trend for larger transactions in the second half of the year.”

Financial Outlook:

Revenue guidance for the second half of 2005 is being targeted in a range of $51 million to $55 million. For the second half of 2005, Entrust is currently targeting a pro forma (non-GAAP) net income per share in a range of $0.06 to $0.09. The non-GAAP earnings per share guidance excludes a total of approximately $390 thousand of purchased intangibles amortization in cost of goods sold and approximately $80 thousand of amortization of intangible assets in operating expenses. On a GAAP basis the company is targeting its earnings for the second half of 2005 to be in the range of $0.06 to $0.08 per share. For the full year, this equates to a targeted net income of $0.10 to $0.12 per share.

Technology and Industry Highlights:

Entrust will host a live teleconference and Webcast on Tuesday, July 19, 2005, at 5 p.m. (Eastern), featuring Chairman, President and CEO Bill Conner and Chief Financial Officer David Wagner discussing Entrust’s second quarter 2005 results and second-half guidance for 2005. The conference call audio will be available live via dial-in at 1-800-814-4857 and via the Internet at http://phx.corporate-ir.net/playerlink.zhtml?c=73119&s=wm&e=1091737. Please log on approximately 15 minutes before the Webcast begins in order to register and to download and install any necessary audio software. An archive of the Webcast will be available for 90 days at the above Internet address.

For those unable to attend the live conference call, an audio replay will be available beginning at 7:00 p.m. (Eastern), Tuesday, July 19, 2005 through Tuesday, July 26, 2005 at 11:59 p.m. (Eastern). The North American replay number is 1-877-289-8525 and the International replay number is 416-640-1917. Both numbers have a pass code of 21129702#.

Use of Non-GAAP Financial Measures

Entrust is providing non-GAAP guidance for the second half of 2005 to supplement our guidance in accordance with GAAP. These non-GAAP results are provided to enhance the user’s overall understanding of our financial performance by providing investors additional information about our recurring operations. The non-GAAP results exclude: purchased intangibles amortization in cost of goods sold and amortization of intangible assets in operating expenses, stock option expense, and restructuring charges. The non-GAAP measures are included to provide investors and management with an alternative method for assessing Entrust’s operating results. The presentation of this additional information should not be considered in isolation or as a substitute for results prepared in accordance with accounting principles generally accepted in the United States.

This press release contains forward-looking statements relating to Entrust’s projected revenue, GAAP net income and pro forma net income for the second half of 2005. Such statements involve a number of risks and uncertainties. Among the important factors that could cause actual results to differ materially from those indicated by such forward-looking statements are unforeseen operating expenses, issues associated with revenue recognition, issues raised in connection with the review of quarterly financial results, and the risk factors detailed from time to time in Entrust’s periodic reports and registration statements filed with the Securities and Exchange Commission, including without limitation Entrust’s Annual Report on Form 10-K for the fiscal year ended December 31, 2004 and quarterly report on Form 10-Q for the fiscal quarter ended March 31, 2005. While Entrust may elect to update forward-looking statements in the future, Entrust specifically disclaims any obligation to do so, even if its estimates change.

About Entrust

Entrust, Inc. [NASDAQ: ENTU] is a world-leader in securing digital identities and information. Over 1,400 enterprises and government agencies in more than 50 countries use Entrust solutions to help secure the digital lives of their citizens, customers, employees and partners. Our proven software and services can help customers achieve regulatory and corporate compliance, while helping to turn security challenges such as identity theft and e-mail security into business opportunities. For more information on how Entrust can help secure your digital life, please visit: www.entrust.com

Entrust is a registered trademark of Entrust, Inc. in the United States and other countries. In Canada, Entrust is a registered trademark of Entrust Limited. All Entrust product names are trademarks of Entrust. All other company and product names are trademarks or registered trademarks of their respective owners.

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ENTRUST, INC.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

IN ACCORDANCE WITH GENERALLY ACCEPTED ACCOUNTING PRINCIPLES

(in thousands, except per share data)

ENTRUST, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

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