ATSHA204 ATMEL [ATMEL Corporation], ATSHA204 Datasheet - Page 53
ATSHA204
Manufacturer Part Number
ATSHA204
Description
Atmel CryptoAuthentication
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.ATSHA204.pdf
(65 pages)
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If reading the data zone and the EncryptRead bit is set in the corresponding SlotConfig word, the following actions are taken to
encrypt the data:
All of the TempKey register bits must be properly set as follows, or this command returns an error:
XOR the data from the memory zone with TempKey. Return as “Contents.”
TempKey.Valid == 1
TempKey.GenData == 1
TempKey.KeyID == SlotConfig.ReadKey
TempKey.SourceFlag == “Rand”
Atmel ATSHA204 [DATASHEET]
8740D−CRYPTO−3/12
53
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