AT88SA10HS(2009) データシートの表示（PDF） - Atmel Corporation
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AT88SA10HS Datasheet PDF : 23 Pages
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4.2.
HOST1
Completes the two block SHA-256 digest started by HOST0 and leaves the resulting digest within the internal memory
of the AT88SA10HS. This command returns an error if HOST0 has not been successfully run previously within this
wake cycle.
As a security precaution, this command does not return the digest. A subsequent command is required to compare the
response generated by the client with the one generated by the host.
Table 9.
Opcode
Param1
Param2
Data
Input Parameters
Name
HOST1
Mode
Zero
OtherInfo
Size
1
1
2
13
Notes
0x40
Controls composition of message, see below for details.
Must be 0x00 00
Input portion of message to be digested.
Table 10. Output Parameters
Name
Size
Success
1
Notes
Upon successful completion of HOST1, a value of 0 will be returned by
AT88SA10HS.
The contents of the second block to be digested are listed below. Note that to simplify this documentation; the bit
addresses for OtherInfo are listed in the table below.
Size
32 bits
64 bits
24 bits
8 bits
32 bits
16 bits
16 bits
Source
OtherInfo[0-31]
Fuse[0-63]
OtherInfo[32-55]
Fuse[88-95]
OtherInfo[56-87]
ROM MfrID
OtherInfo[88-103]
Notes
Opcode, param1 & param2 values sent to the AT88SA100S/AT88SA102S
If enabled by bit 5 of the input mode parameter and if Fuse[87] is burned,
else forced to 0
Status fuse values from AT88SA102S, or 0’s
Fuse MfrID, should match between AT88SA10HS and
AT88SA100S/AT88SA102S.
Fuse SN from AT88SA100S/AT88SA102S (Fuse[96-127]), or 0’s
Should match between AT88SA10HS and AT88SA100S/AT88SA102S.
ROM SN from AT88SA100S/AT88SA102S, or 0’s
These bits are followed by the necessary ‘1’ bit, ‘0’ padding and 64 bit length as specified in the SHA-256 specification.
14 AT88SA10HS Host Authentication Chip [Preliminary]
8595B–SMEM–09/09
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