4428 Card contact chip pvc white card widely applications
SLE4428 Card Overview
4428 IC card is a type of contact IC card. It is a logical encryption card in the contact type IC card. It has small memory and stable performance and has been successfully applied in various industries.
SLE4428 Card crafts
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Material |
PVC or custom(PET,ABS,PETG) |
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Size |
85.5*54*0.84mm |
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Chip Type |
SLE4428/SLE5528 |
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Color |
White pvc |
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Printing |
CMYK printing or custom |
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Surface finished |
Glossy/Matt/Frosted |
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Protocol |
ISO7816 |
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Type |
Contact |
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Optionals |
Gold/silver foil,id photo,hole,emboss,uv, laser engraving,signature pannels,magnetic stripe,barcode,contactless chip,sim cut,.... |
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Application |
ID,SecID,Access control,... |
Electronic performance
4428 IC card Key Feather
● 1024-byte write protection area (cured data)
● 2-byte password, error count 8 times
● Temperature range: 35 °C ~ 80 °C
● At least 100,000 erase cycles
● At least 10 years data retention period
4428 IC card function description
1. The SLE4428 has a capacity of 1Kbytes and the address space is from 0 to 1023.
2. all data except the password can be read under any circumstances, the password can be read after the check is correct.
3. All data including the password itself can be written or changed after checking the correct password.
4. All data can be write-protected in bytes. After write-protection, the data is solidified and cannot be changed under any circumstances.
5. there is a password error counter. The address is 1021. The initial value is 8, and the password check fails once, then it is decremented by 1. If the counter value is 0,
Then the data of the entire card is locked, can only be read, can not be written or changed and can not continue to check the password; if not 0, only one check is needed Correct, the counter will return to its initial value.
6. the password length is 2bytes, the address is 1022, 1023. There are 216 combinations, read the two addresses before the password is checked correctly.
The result is "00", which cannot be written or changed. After the password is checked correctly, the password can be read or the password can be changed. The password will remain valid until the card is powered down.
7. The only code. Address 21~26 is the user code of the card, which is the only user code in the world, which guarantees the user's maximum benefits, this code will not be changeable after being solidified.
8. Address 0~7, 21~26 It has been solidified by the manufacturer before leaving the factory and cannot be changed.
SLE4428 card Attention
1. SLE4428 has three security mechanisms: user password, unique code, solidified write. If the password is not verified correctly, the number cannot be written.
According to this, once the written data is write-protected (cured), it cannot be changed. Use the unique code as the identifier of the IC card used in the system to avoid the same
The model's counterfeit card breaks into the system.
2. SLE4428 card can read the data of the whole card without a password, so the design should pay attention to the content encryption, in order to prevent the destroyer from identifying the data format.
3. The whole card is not partitioned. Once the password is verified, the data can be written or modified to any address. Therefore, pay attention to proper design.
Cure data and encrypt data content to prevent unintentional data corruption or illegal data changes.
4. After the password is checked correctly, it can be read. Therefore, the design time program should prevent the destroyer from using the illegal interrupt program to run directly.
Take a password to steal passwords.
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