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10-Bit Numru U 8-bit Numru Konverżjoni Relazzjoni tal-Kard ta 'Kontroll ta' Aċċess

23/07/2018

Normalment fis-sistema ta 'kontroll ta' aċċess, in-numru tal-karta 8-bit huwa wiegand26-bit output, in-numru tal-karta 10-bit huwa wiegand34-bit output.
Pereżempju, stampar fuq karta:
0013961168 10-numru tal-karta tal-bit,
addattat biex teħel fuq wiċċ tal-metall
213 02000 3+5 8-numru tal-karta tal-bit.
10-numru tal-karta tal-bit 0013961168, jikkonvertu għal eżadeċimali is 00 D5 07 D0.
8-numru tal-karta tal-bit 213 02000, l-ewwel 3 addattat biex teħel fuq wiċċ tal-metall 213 converted to hexadecimal is D5, the last five digits 02000 converted to hexadecimal is 07 D0.

Għalhekk, the rules can be found: First, the 10-digit conversion to hexadecimal is 4 bytes, the first byte does not need, the second byte is converted to the first 3 digits of the 8-bit card number, the third and fourth the bytes are converted together into the last 5 digits of the 8-bit card number.
Excel formula=(MOD(X,256*256))+(MOD(INT(X/(256*256)),256)*100000).

It can be seen from the above that the 10-bit card number in the access control attendance system can be converted into an 8-bit card number by an algorithm, and the 8-bit card number is difficult to restore to a 10-bit card number.
Most of the access control attendance systems developed and produced by Seabreeze Smart Card Co.,Ltd are compatible with wiegand26 and wiegand34, and the software can also freely choose 8-bit card number or 10-bit card number operation.

(SeabreezeRFID)

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