ValiCert and Trintech Partner to Provide Secure eCommerce Solutions for eMerchants and eBusinesses.

Business Editors & High Tech Writers

SAN MATEO, Calif.--(BUSINESS WIRE)--April 18, 2000

ValiCert to Provide Merchant Validation and Trust Service for

Business-to-Business and Business-to-Consumer eCommerce Based On

Trintech's PayWare eIssuer Technology

Trintech Group PLC (Nasdaq:TTPA)(Neuer Markt:TTP), a leading provider of secure electronic payment infrastructure solutions, today announced an agreement with ValiCert Inc., a leading provider of end-to-end secure infrastructure solutions for eTransactions, to provide business-to-business eCommerce companies with enhanced merchant validation services. The solution combines Trintech's PayWare eIssuer technology with ValiCert's Global Validation Authority (VA) Service to verify eMerchants and improve security in conducting eCommerce transactions.

The licensing agreement enables ValiCert to build merchant credit card validation capabilities into its Global Validation Authority service. The PayWare eIssuer technology allows ValiCert to validate whether or not an eMerchant can accept credit card transactions. It also allows other trust entities to further certify that each component of an Internet transaction is valid. The technology will benefit both consumers and financial institutions by enabling merchant transactions on the Internet to be processed in a more secure fashion.

"The business of securing the Internet is one that demands a `best of breed' approach to technological innovation," says John McGuire, CEO of Trintech. "By leveraging the inherent strengths of our PayWare eIssuer solution with ValiCert's Validation Authority technology, we can provide the industry with the highest level validation of eMerchants. We are excited about this agreement and feel it represents a major step forward for truly secure business-to-business and business-to-consumer eCommerce."

"By leveraging Trintech's PayWare eIssuer technology, we are able to significantly enhance the features of our merchant validation service," says Yosi Amram, president and CEO of ValiCert. "By working closely with leading vendors like Trintech, we can improve the shopping experience for consumers and greatly enhance the overall security of eCommerce for merchants and transaction processors."

About ValiCert

ValiCert is a leading provider of end-to-end, secure infrastructure solutions for e-Transactions. ValiCert's Validation Authority(TM) SecureTransport(TM) and Digital Receipt services and products protect organizations before, during and after e-Transactions through comprehensive validation, transaction and proof solutions. The company is committed to Internet standards and has led efforts such as the authorship of Online Certificate Status Protocol (OCSP) and Simple Certificate Validation Protocol (SCVP), and contributed to the XML Data Type Definition (DTD) for digital receipts as a founding member of the Digital Receipt Alliance. ValiCert's customers include Global 2000 organizations in financial services, telecommunications, healthcare and government, and ValiCert's Worldwide Affiliate Network of ISPs, ASPs and other service providers ensures the high level of service and support. ValiCert is headquartered in Mountain View, Calif., with offices worldwide and can be reached on the Internet at www.valicert.com.

About Trintech

Founded in 1987, Trintech Group PLC is a leading provider of secure electronic payment solutions for card-based transactions in the physical world and over the Internet. The company offers a complete range of payment software products for credit, debit, commercial and procurement card applications, as well as being a world leader in the deployment of payment solutions for Internet commerce that are fully SSL and SET(TM) compliant. Trintech's range of scalable open systems architecture solutions for UNIX(R) and Windows NT(TM) platforms covers consumer, merchant and financial institution requirements for physical payments and the emerging world of electronic commerce. Trintech can be contacted in the U.S. at 2755 Campus Drive, San Mateo, CA 94003 (Tel: [phone]) and in Ireland at Trintech Building, South County Business Park, Leopardstown, Dublin 18 (Tel: [phone]). Trintech can be reached on the Web at http://www.trintech.com.

ValiCert, Validation Authority and SecureTransport are trademarks of ValiCert, Inc. All other product and brand names are trademarks or registered trademarks of their respective owners.

This press release may contain "forward looking statements" within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Any "forward looking statements" in this press release are subject to certain risks and uncertainties that could cause actual results to differ materially from those stated. Factors that could cause or contribute to such differences include the ability to develop, market and sell its eCommerce software, the market acceptance of the SSL or SET standards for eCommerce payment transactions, its ability to effectively respond to future changes in the e-payment software market and, in particular, the market acceptance by card issuers of PayWare eIssuer. Actual performance may also be affected by other factors more fully discussed in Trintech's Form F-1 and Form 6-K for the quarter ended January 31, 2000 filed with the U.S. Securities and Exchange Commission.