AT88SC0104CA_11 ATMEL [ATMEL Corporation], AT88SC0104CA_11 Datasheet - Page 39
AT88SC0104CA_11
Manufacturer Part Number
AT88SC0104CA_11
Description
Atmel CryptoMemory Specification Datasheet
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT88SC0104CA_11.pdf
(66 pages)
- Current page: 39 of 66
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Figure 8-16. Verify Crypto
Once the sequence has been carried out, the device requires the host to perform an ACK polling with either the read user
zone $B2 command or system read $B6 command. To verify whether the authentication succeeded, the host could either read
the associated attempts counter to confirm the value is $FF, or read the post authentication cryptogram from the device and
compare with the cryptogram generated when the host computed the challenge bytes.
S
A
R
T
T
Command
1011 1000
C
A
K
Key Index
000e 00nn
A
C
K
Parameter 2
xxxx xxxx
Atmel AT88SC0104CA/0204CA/0404CA/0808CA [Datasheet]
A
C
K
0001 0000
N=16
C
A
K
Data x 16
d7--- ---d0
A
C
K
S
O
P
T
8664E−CRYPTO−12/11
39
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