AT88SC6416CRF-DK Atmel, AT88SC6416CRF-DK Datasheet - Page 5

• Manufacturer Part Number: AT88SC6416CRF-DK
• Description: DEVELOPMENT KIT
• Manufacturer: Atmel
• Series: CryptoMemory®r
• Type: Crypto and Secure Memoryr

Specifications of AT88SC6416CRF-DK

• Contents: RF Reader and Software
• For Use With/related Products: AT88SC6416CRF
• Other names: Q3188334

7. Communication Security
7.1
7.2
5006DS–CRRF–04/09
Security Methodology
Memory Access
Communication between the PICC and reader operates in three basic modes. Standard mode is
the default mode for the device after power-up and anticollision. Authentication mode is acti-
vated by a successful authentication sequence. Encryption mode is activated by a successful
encryption activation, following a successful authentication.
Table 7-1.
Notes:
Figure 7-1.
Depending on the device configuration, the host will carry out the authentication protocol and/or
present different passwords for each operation: read or write. To insure security between the dif-
ferent user zones (multiapplication card), each zone can use a different set of passwords. A
specific attempts counter for each password and for the authentication provides protection
against systematic attacks.
Mode
Standard
Authentication
Encryption
1. Modification Detection Code
2. Message Authentication Code
Check Password (WPW)
Check Password (RPW)
Device (card)
Compute Challenge B
Configuration Security Modes
Security Methodology
Checksum (CS)
User Data
clear
clear
encrypted
Card Number
Challenge B
VERIFY CS
Write DATA
VERIFY A
DATA
Passwords
clear
encrypted
encrypted
Data Integrity
Check
MDC
MAC
MAC
(2)
(2)
(1)
COMPUTE Challenge A
Challenge A
VERIFY B
Read Password (RPW)
VERIFY CS (optional)
Write Password (WPW)
DATA
CS
Host (reader)
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