CryptoAuthentication

Datasheets

AT88SA100S

AT88SA100S
( file size: 240KB , 23 pages , revision G , updated: 09/2012 )

AT88SA102S

AT88SA102S
( file size: 248KB , 25 pages , revision H , updated: 09/2012 )

AT88SA10HS

AT88SA10HS
( file size: 250KB , 24 pages , revision H , updated: 09/2012 )

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Mature product, not recommended for new designs. Replaced by ATSHA204.

Authentication chip that securely authenticates an item to which it is attached. The device can also be used to exchange session keys with some remote entity so that the system microprocessor can securely encrypt and decrypt data. Each chip contains a pre-programmed serial number that is guaranteed to be unique. The device has been designed to permit secure personalization so that third parties can build devices containing an OEM secret without concern for the theft of that secret. The device is the first small standard product to implement the SHA-256 hash algorithm, which renders exhaustive attacks impossible.

Key Parameters

Parameter
Value

Operating Voltage (Vcc):

2.7 to 5.25

Interface Type:

Single-wire

Algorithm Type:

NIST SHA-256

Key Size:

256

 

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