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參數(shù)資料
| 型號(hào)： | AT88SA102S-TSU-T |
| 廠商： | Atmel |
| 文件頁數(shù)： | 10/25頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC PROD AUTHENTICATION SOT23-3 |
| 產(chǎn)品培訓(xùn)模塊： | CryptoAuthentication™ Introduction |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | * |
| 其它名稱： | AT88SA102S-TSU-TDKR |
18
6.4
GenPersonalizationKey
Loads a personalization key into internal memory and then uses that key along with an input seed to generate a decryption
digest using SHA-256. Neither the key nor the decryption digest can be read from the chip. Upon completion, an internal bit is
set indicating that a secure personalization digest has been loaded and is ready for use by BurnSecure. This bit is cleared
(and the digest lost) when the watchdog timer expires or the power is cycled.
This command will fail if Fuse[87] has been burned.
Table 6-9.
Input Parameters
Name
Size
Notes
Opcode
GenPers
1
0x20
Param1
Zero
1
Must be 0x00
Param2
KeyID
2
Identification number of the personalization key to be loaded
Data
Seed
16
Seed for digest generation. The least significant bit of the last byte is ignored by
AT88SA102S
Table 6-10. Output Parameters
Name
Size
Notes
Success
1
Upon successful execution, a value of 0 will be returned by AT88SA102S
The SHA-256 message body used to create the resulting digest internally stored in the chip consists of the following 512-bits:
256-bits PersonalizeKey[KeyID]
64-bits
Fixed value of all ones
127-bits Seed from input stream
1-bits
‘1’ pad
64-bits
Length of message in bits, fixed at 447
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