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To avoid duplicate credential IDs on a 125kHz proximity card, simply printing different numbers on the card surface is not enough. First, define the credential format used by the access control system and assign non-overlapping ID ranges. Then encode each card using a controlled production database. Before writing data, we must verify the uniqueness of […]
Choosing an algorithm is first and foremost a compatibility decision, followed by performance considerations. When choosing between ECDSA and Ed25519 for a Java Card crypto card, the first question is: Which signature algorithm does the target blockchain or wallet protocol require? Both ECDSA and Ed25519 are elliptic curve digital signature algorithms, and when properly implemented, […]
In large-scale citizen ID card projects involving hundreds of thousands of cards, the cards’ functionality goes far beyond verifying a single citizen’s identity. Each card must have consistent security features, interact with a wide range of card readers, protect keys and identity data throughout a service life spanning several years, support controlled personalization, and remain […]
When selecting a contact card chip, consider two key questions: How much data does the card need to store? What level of protection do these data or credentials require? These two requirements point to different types of chips. Simply defaulting to the chip with the largest storage capacity or the highest security level is often […]
A government ID card is more than just a document with a printed design and a built-in security chip. Its core functionality comes from the applications running within the Secure Element, including storing identity credentials, verifying the cardholder’s identity, protecting encryption keys, responding to government terminals, and supporting various public service applications. Indeed, Java Card […]
Institutional-grade crypto asset custody involves more than protecting private keys. The more critical questions are: Where are the signing permissions stored? Who activates those permissions? And can compromising a single employee, server, or device transfer assets? MPC technology solves this problem by distributing signing permissions across multiple key shards. The system no longer stores the […]
The NXP P71 JCOP 4.5 J3R452 Java Card is based on the SmartMX3 P71D600 secure microcontroller platform and runs the JCOP 4.5 operating system. It supports the Java Card 3.0.5 Classic and GlobalPlatform 2.3.1 standards, features contact and contactless interfaces, advanced cryptographic technologies, and PUF-based hardware security features, and provides about 450 KB of application […]
The EM4200 cards do not require a dedicated reader manufactured specifically for the EM4200 chip. In most applications, any reader that supports the EM4200 or its compatible EM4100/EM4102 communication formats and operates at 125 kHz can read the card. This compatibility is a key advantage of the EM4200. When designing this chip, EM Microelectronic positioned […]
The SLE4428 smart card can certainly serve as an access control credential—provided the access control system is compatible with its security model and contact-based operation. The SLE4428 is not a microprocessor-based smart card with advanced encryption and authentication capabilities, but rather a contact-based card; Its core configuration includes 1 KB of EEPROM storage, irreversible byte-level […]
When selecting a JCOP Java Card for PKI applications, don’t focus solely on the card with the largest storage capacity. PKI credentials must securely protect private keys, perform digital signature or authentication operations, store certificates, and remain compatible with the organization’s existing card management and card reader infrastructure. From the perspective of a professional smart […]