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SB n° 273: Clarification on Setting TSI bit for CDA (Mode 1 and 2) Transaction

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EMV® Specification Bulletin No. 273 First Edition July 2022 Clarification on Setting TSI bit for CDA (Mode 1 and 2) Transaction

Applicability

This Specification Bulletin applies to:

  • EMV Integrated Circuit Card Specifications for Payment Systems Book 3 - Application Specification, Version 4.3 November 2011

Related Documents

None

Effective Date

Immediate

Description

EMV provides four CDA options, Mode 1, 2, 3, and 4. Depending on the option chosen, CDA can be performed at 1st Generate AC, at 2nd Generate AC, or at both. This bulletin clarifies that when CDA is performed at 1st Generate AC (Mode 1 or Mode 2), ‘Offline data authentication was performed’ bit in the TSI shall be set to 1 after the 1st Generate AC. Specification Changes In Section 10.3, ‘Description:’, after the paragraph ‘If the records read… … bit in the TVR’, insert following: When CDA is performed at 1st Generate AC (CDA Mode 1 or 2), terminal shall set ‘Offline data authentication was performed’ bit in the TSI to 1 immediately after the 1st Generate AC.

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Legal Notice

The EMV® Specifications are provided “AS IS” without warranties of any kind, and EMVCo neither assumes nor accepts any liability for any errors or omissions contained in these Specifications. EMVCO DISCLAIMS ALL REPRESENTATIONS AND WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT, AS TO THESE SPECIFICATIONS. EMVCo makes no representations or warranties with respect to intellectual property rights of any third parties in or in relation to the Specifications. EMVCo undertakes no responsibility to determine whether any implementation of the EMV® Specifications may violate, infringe, or otherwise exercise the patent, copyright, trademark, trade secret, know-how, or other intellectual property rights of third parties, and thus any person who implements any part of the EMV® Specifications should consult an intellectual property attorney before any such implementation. Without limiting the foregoing, the Specifications may provide for the use of public key encryption and other technology, which may be the subject matter of patents in several countries. Any party seeking to implement these Specifications is solely responsible for determining whether its activities require a license to any such technology, including for patents on public key encryption technology. EMVCo shall not be liable under any theory for any party’s infringement of any intellectual property rights in connection with the EMV® Specifications

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