ISO/IEC 18328-4:2018

Overview

ISO/IEC 18328-4:2018 - Identification cards - ICC‑managed devices - Part 4: Test methods for logical characteristics defines the test methods used to verify whether an integrated circuit card (ICC) that manages on‑card devices conforms to the functional and logical requirements of ISO/IEC 18328-3 (device organization, security and commands for interchange). Part 4 is part of the ISO/IEC 18328 series and focuses on conformity testing, test design and structured test cases for logical behaviour of ICC‑managed devices.

Key topics and technical requirements

• Scope and purpose: Specifies test methods for determining conformance of an ICC with at least one ICC‑managed device against ISO/IEC 18328‑3 requirements (device management and device handling).
• Test design fundamentals: Defines core testing concepts used throughout the standard:
  • Device Under Test (DUT) - an ICC with one or more ICC‑managed devices.
  • Test unit - a group of related test cases organized by functionality.
  • Test case - an elementary method validating a single function or requirement.
  • Test report - standardized output for recorded results and verdicts.
• Structured test units: Test cases are grouped by logical states and functions such as Idle, Ready, Input, Output, Erase, Deactivated, Exclusive, General, Timeout, Shareability, etc., each addressing specific logical characteristics and state transitions.
• Test method components: Preconditions, test setup, test execution and reporting details to ensure repeatability and objective conformity assessment.
• Normative references: Integrates terminology and command/format guidance from ISO/IEC 7816‑4 and other parts of the 18328 series.

Practical applications and who uses it

This standard is intended for professionals and organizations involved in smart‑card device development, testing and certification:

• Smart card and ICC manufacturers - validate on‑card device behaviour and firmware conformance.
• Test laboratories and conformity assessment bodies - implement consistent, repeatable test suites for certification.
• System integrators and solution providers - ensure interoperability and correct device management across ecosystems.
• Government agencies and issuers - verify logical characteristics of identification and payment cards before deployment.
• Test tool and test case developers - build automated test harnesses aligned to the standard’s test units and cases.

Related standards

• ISO/IEC 18328‑1: General framework for ICC‑managed devices
• ISO/IEC 18328‑2: Physical characteristics and card test methods
• ISO/IEC 18328‑3: Organization, security and commands for interchange (requirements targeted by Part 4)
• ISO/IEC 7816‑4: Integrated circuit cards - organization, security and commands

Using ISO/IEC 18328‑4:2018 helps organizations establish consistent, repeatable conformity testing for the logical behaviour of ICC‑managed devices, improving interoperability, security and trust in identification card ecosystems.