| Contact IC Card |
| |
| |
| |
|
|
| |
Product Description |
| |
Contactless IC card, also known as "IC card", the integrated circuits as a standard serial EEPROM. Smart card, the English name of "Integrated Circuit Card" or "Smart card", is the French Roland Moreno invented in 1974, will have storage, encryption and data processing integrated circuit chip package and credit card size in the size of the plastic film base , the IC card will constitute.
Contactless IC card points and non-encrypted memory card memory card encryption
Non-encrypted memory cards: a standard IC card serial EEPROM.
Encrypted storage card: card with the encryption logic integrated circuits for the serial EEPROM.
EEPROM: an electrical method can be used all at once erase its contents, but also can be byte erased and then re-write of the storage circuit.
Contactless IC cards and other cards compared
As the IC card using the most advanced semiconductor manufacturing technology and information security technology, IC card as opposed to other types of cards have the following characteristics:
⑴ storage capacity: The internal RAM, ROM, EEPROM, such as memory, storage capacity can go to megabytes, can store text, sound, graphics, images, and other information.
⑵ small size, light weight, anti-interference ability, easy to carry, easy to use.
⑶ safe: IC card from the hardware and software aspects of the implementation of its security policies, can control access to different areas of the card features. IC card itself has a security encryption password, if you try to illegally access the data on the card self-destruction, can no longer read and write.
⑷ on the network do not ask: IC card security and reliability of its application environment in real time on the computer network, to lower the sensitivity, is consistent with the current situation is conducive to high quality in the network environment.
Feature
According to different manufacturers and the same chip with different chip manufacturers, IC cards have their own specific characteristics (see the information), but in terms of its characteristics, the following points. Are compared with the card.
1. Storage capacity:
Card can only store a few hundred bytes maximum, magnetic strip also can do as a passive storage medium. The IC card can store 1M bytes, and storage area can be divided, with different access levels.
2. Cryptographically
Card does not control circuitry, so the internal data reading and writing can not secure control, order and read the technology is mechanical, while the IC card control circuit can read and write to its internal data, erase control. Read technology is random .
3. Network dependence:
Card in use to ensure strong between the terminal and host real-time, once the host or network failure will paralyze the whole system, while the IC card can store large amounts of data, and by the logic control, use and all operations independently from the terminal, completely free from dependence on the network end.
4. Life:
Magnetic short life, the general life of two months to a year in between, while the IC card is not man-made damage to life of up to ten years.
5. Immunity:
Card in the magnetically shielded, anti-static, waterproof and so are poor, but not indiscriminately wipe magnetic strip, while the IC cards are strong in these areas, only chips should be kept clean.
6. The security of:
Card is easy to fake, and IC card itself has a very strong logic encryption, making false rate is almost zero.
7. Contactless IC card reader device to read and write than the magnetic device is simple and reliable, low cost, easily replicable, and easy maintenance.
IC card storage structure:
Different contact IC card chip of its storage structure is different, now briefly introduce the general situation:
IC card with a storage area rather that in this region can be divided into a one unit, which each unit is a storage of the data on each unit, you can specify any one of a data storage unit, and it can storage. Some IC card is divided into different regions, each region has its unique nature, but on each of its regional storage methods are similar. |
| |
 |
|
|
| |
|
|
 |
|
