Java Card

Features of JCOP 4 P71

Major Improvement of JCOP 4 P71:

1, JCOP4 P71 series JAVA card is another pinnacle after the J2A, J3A, J3D, and J3H series. It ensures high security and high performance from the foundation, and adds the data storage capacity uses a Flash chip to make the chip’s computing speed faster and more stable. Before the J3H series JAVA (inclusive), EEPROM chips were used, and after the J3R series (inclusive), Flash chips were used.

2, The JCOP4 P71 chip is divided into EMV and SecID versions. The EMV version is mainly used in the financial field; the SecID version is mainly used in the electronic identity field. The ECC algorithm is mainly used in the electronic ID card field. The ECC algorithm and Gen Key encryption algorithm are mainly used in the electronic ID card field. At present, the J3R SecID series has obtained the CC EAL 6+ certificate.

3, The RAM (trasient memory) of the J3R series JAVA card has a total of 4K, which is 0.8K more than the J3H series, and the APDU Buffer Size is even larger.

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How a Java Card works, in buyer’s terms

A Java Card runs applets on the Java Card platform. For procurement, the important checks are the platform version, supported APIs, available memory, interfaces and card-management configuration. Loading an applet also requires the appropriate permissions and keys. A blank card alone is not a ready-to-use identity, payment or transit credential: the application, issuer configuration and system acceptance must be established for the project.

NXP JCOP generations: J2A040 to JCOP 4 P71

Most Java Cards on the market are NXP’s JCOP family, and the part number tells you the generation, the interface and the memory. Older parts are still sold because a great deal of open-source and enterprise tooling was written against them.

If your applet vendor or integrator specifies a part, begin with that requirement. Confirm the offered card’s platform versions, memory and enabled features against the applet documentation; some tooling also checks the ATR. For a new project or an alternative part, verify current supply and support, then test the full installation and operating workflow with samples.

What ‘unfused’ means

“Unfused” is used for cards whose pre-personalisation configuration has not been locked. The available settings and initialisation procedure depend on the exact JCOP product and delivery state. Ask the supplier to document that state, the required initialisation steps and the card-manager key handover. Do not assume default keys or applet-loading permission from the word “unfused” alone.

Typical applets and use cases

• PIV and corporate PKI: confirm the chosen PIV applet’s card requirements and the organisation’s certificate and middleware configuration.
• OpenPGP: private keys for signing, encryption and SSH authentication kept on the card.
• FIDO2 / WebAuthn: check the applet’s compatibility, required cryptographic functions and any certification requirements for the intended deployment.
• One-time passwords: OATH TOTP/HOTP applets for two-factor authentication.
• Payment and transit: these projects require the scheme or issuer’s approved application, configuration and acceptance process; a blank card does not provide scheme membership.
• eID and health: national ID, driving licence and health-insurance applications on the SecID variant, which is what the passport-style chip on this page refers to.
• Loyalty and closed-loop schemes: issuer-written applets for campus, canteen or fleet cards that need cryptographic protection beyond what a MIFARE card offers.

Java Card, MIFARE DESFire or a dual-interface card?

Compare a MIFARE DESFire card when the application calls for its file and security model, and a Java Card when the project requires a supported applet. A dual-interface label does not establish MIFARE emulation or compatibility with a door reader. Confirm the exact chip option and validate each application independently. See the dual-interface card page for the format and the combi card page for cards that combine separate chips.

Card construction and personalisation

• Body: ISO/IEC 7810 ID-1 in PVC, PET-G or polycarbonate, 0.76 to 0.84 mm, with the contact module embedded and, on dual-interface parts, an antenna laminated inside.
• Printing: offset CMYK, Pantone, UV and digital printing; magnetic stripe, signature panel, hologram, photo and numbering.
• Other formats: the same chip module cut to SIM/2FF or 4FF size for tokens and readers with a SIM slot; USB-token versions on request.
• Initialisation: specify the delivery state, ATR and interface requirements. Agree the initialisation work, documentation and key handover in the quotation before sample approval.

Before you order

1. The exact part (J2A040, J3D081, J3H145, J3R180 and so on) or, failing that, the Java Card and GlobalPlatform versions your applet needs.
2. Contact only or dual interface, and whether MIFARE emulation is required.
3. Fused or unfused, and the ATR or interface settings if we initialise the cards.
4. Blank white, or printed to your artwork with a magnetic stripe or numbering.
5. Quantity and delivery date; samples are available for testing with your applet and reader.

What Proud Tek supplies

We supply NXP JCOP Java Cards; specify the part number, card format, printing and initialisation requirements in your enquiry. Confirm the delivery state and key handover with the quotation. We do not write applets or supply middleware. For dual-interface cards, the ACR122U is a PC/SC contactless reader option; the µFR Classic CS uses its own SDK by default and has a separate Windows PC/SC driver. Contact-only cards need a contact reader. Test the card, reader, operating system and applet loader together. Browse all our RFID and smart cards.