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參數(shù)資料
| 型號： | AT88SC1616CRF |
| 英文描述： | AT88SC1616CRF Summary [Updated 05/03. 9 Pages] Contactless 16-Kbit user memory with authentication and encryption. ISO/IEC 14443 Type B compliant. This is a summary document. A complete is available under NDA. For more information. please contact your local Atmel sales office. |
| 中文描述： | AT88SC1616CRF摘要[更新05/03。 9頁]接觸的16千位的身份驗證和加密用戶內(nèi)存。的ISO / IEC 14443 B類標準。這是一個總結(jié)文件。一個完整的保密協(xié)議下提供。欲了解更多信息。請聯(lián)系您當?shù)貝厶孛窢栦N售辦事處。 |
| 文件頁數(shù)： | 7/13頁 |
| 文件大?。?/td> | 141K |
| 代理商： | AT88SC1616CRF |
7
AT88SC0104C
2021BS–SMEM–10/02
Password Verification
Passwords may be used to protect read and/or write access of any user zone. When a
valid password is presented, it is memorized and active until power is turned off, unless
a new password is presented or RST becomes active. There are eight password sets
that may be used to protect any user zone. Only one password is active at a time, but
write passwords give read access also.
Authentication Protocol
The access to a user zone may be protected by an authentication protocol. Any one of
four keys may be selected to use with a user zone.
The authentication success is memorized and active as long as the chip is powered,
unless a new authentication is initialized or RST becomes active. If the new authentica-
tion request is not validated, the card loses its previous authentication and it should be
presented again. Only the last request is memorized.
Note:
Password and authentication may be presented at any time and in any order. If the trials
limit has been reached (after four consecutive incorrect attempts), the password verifica-
tion or authentication process will not be taken into account.
Figure 4.
Password and Authentication Operations
Checksum
The AT88SC0104C implements a data validity check function in the form of a check-
sum, which may function in standard, authentication or encryption modes.
In the standard mode, the checksum is implemented as a Modification Detection Code
(MDC), in which the host may read a MDC from the device in order to verify that the data
sent was received correctly.
In the authentication and encryption modes, the checksum becomes more powerful
since it provides a bidirectional data integrity check and data origin authentication capa-
bility in the form of a Message Authentication Code (MAC). Only the host/device that
carried out a valid authentication is capable of computing a valid MAC. While operating
in the authentication or encryption modes, the use of a MAC is required. For an ingoing
command, if the device calculates a MAC different from the MAC transmitted by the
host, not only is the command abandoned but the mode is also reset. A new authentica-
tion and/or encryption activation will be required to reactivate the MAC.
CS
VERIFY CS
Write DATA
VERIFY RPW
DATA
Checksum (CS)
VERIFY CS
相關PDF資料 |
PDF描述 |
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| AT88SC200 | ASIC |
| AT88SC220 | ASIC |
| AT88SC250 | ASIC |
| AT88SC3216C | AT88SC3216C Summary [Updated 4/03. 14 Pages] 32-Kbit User Memory with Authentication and Encryption. This is a summary document. A complete document is available under NDA. For more information. please contact your local sales office. |
| AT88SC3216CRF | AT88SC3216CRF Summary [Updated 5/03. 9 Pages] Contactless 32-Kbit user memory with authentication and encryption. ISO/IEC 14443 Type B compliant. This is a summary document. A complete is available under NDA. For more information. please contact your local Atmel sales office. |
相關代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AT88SC1616CRF_09 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:13.56 MHz CryptoRF? EEPROM Memory 16 Kbits |
| AT88SC1616CRF-MR1 | 功能描述:RFID應答器 CRYPTORF 16K, 82pF RoHS:否 制造商:Murata 存儲容量:512 bit 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體: 封裝:Reel |
| AT88SC1616CRF-MVB1G | 功能描述:RFID應答器 CRYPTORF 16KBIT 16ZONE MOD VB RoHS:否 制造商:Murata 存儲容量:512 bit 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體: 封裝:Reel |
| AT88SC1616CRF-MX1 | 功能描述:電可擦除可編程只讀存儲器 CRYPTORF 16K, 13mm RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| AT88SC1616CRF-MY1 | 功能描述:電可擦除可編程只讀存儲器 CRF 16Kbit 16zone Green RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 |
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