at88sa10hs ATMEL Corporation, at88sa10hs Datasheet - Page 16

• Manufacturer Part Number: at88sa10hs
• Description: Cryptoauthentication Host Security Chip
• Manufacturer: ATMEL Corporation

4.3.
16
HOST2
Compares the value previously generated by the AT88SA10HS using HOST0 and HOST1 with that on the input stream
coming from the client and returns status to indicate whether or not the two matched. This command returns an error if
HOST1 has not been previously successfully run within this wake cycle.
If the two digests do not match, the AT88SA10HS provides no information as to the source of the mismatch, which
must be deduced from the inputs to the three HOSTX commands. On a match failure, the entire set of HOST0, HOST1
& HOST2 commands must be re-executed – HOST2 cannot be repeatedly executed.
Table 12.
Table 13.
AT88SA10HS Host Authentication Chip [Preliminary]
Opcode
Param1
Param2
Data
Success
Name
Input Parameters
Output Parameters
HOST2
Zero1
Zero2
ClientResponse
Size
1
Name
If the input ClientResponse matches the internally generated response, a value of 0 will be
returned by the AT88SA10HS after a T
value of 0x0F will be returned after a T
Size
32
1
1
2
0x80
Must be 0x00
Must be 0x00 00
Response from the client.
HOST
HOST
Notes
delay.
delay. If the two digests do NOT match, a
Notes
8595B–SMEM–09/09