AT88SC0808CRF-MVB1G Atmel, AT88SC0808CRF-MVB1G Datasheet - Page 6

• Manufacturer Part Number: AT88SC0808CRF-MVB1G
• Description: CRYPTOMEMORY 8KBIT 8ZONE MVB
• Manufacturer: Atmel

Specifications of AT88SC0808CRF-MVB1G

• Rf Type: Read / Write
• Frequency: 13.56MHz
• Features: 8 Kbit
• Package / Case: MVB Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

5.
5.1.
5.2.
6
Communication Security
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 activated by a successful authentication sequence.
Encryption mode is activated by a successful encryption activation, following a successful authentication.
Table 2.
Note:
Security Methodology
Figure 3.
Memory Access
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 different 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.
AT88SC0808CRF
Standard
Authentication
Encryption
Check Password (WPW)
Check Password (RPW)
COMPUTE Challenge B
1. Modification Detection Code
2. Message Authentication Code
Device (Card)
Mode
Configuration Security Modes
Security Methodology
Checksum (CS)
Card Number
Challenge B
VERIFY CS
Write DATA
VERIFY A
DATA
User Data
encrypted
clear
clear
Passwords
encrypted
encrypted
clear
COMPUTE Challenge A
Challenge A
VERIFY B
Read Password (RPW)
VERIFY CS (optional)
Write Password (WPW)
DATA
CS
Host (Reader)
Data Integrity Check
MDC
MAC
MAC
5027DS–CRRF–03/09
(2)
(2)
(1)