|
|
PDF ATSHA204A Data sheet ( Hoja de datos )
| Número de pieza | ATSHA204A | |
| Descripción | CryptoAuthentication | |
| Fabricantes | ATMEL Corporation | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de ATSHA204A (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
ATSHA204A
Atmel CryptoAuthentication
DATASHEET
Features
Secure Authentication and Validation Device
Integrated Capability for Both Host and Client Operations
Superior SHA-256 Hash Algorithm with Message Authentication Code (MAC)
and Hash-Based Message Authentication Code (HMAC) Options
Best-in-class, 256-bit Key Length; Storage for Up to 16 Keys
Guaranteed Unique 72-bit Serial Number
Internal, High-quality Random Number Generator (RNG)
4.5Kb EEPROM for Keys and Data
512 bit OTP (One Time Programmable) Bits for Fixed Information
Multiple I/O Options
̶ UART-compatible High-Speed, Single-Wire Interface
̶ 1MHz I2C Interface
2.0V to 5.5V Supply Voltage Range
1.8V to 5.5V Communications Voltage Range
<150nA Sleep Current
Extended, Multi-level Hardware Security
8-lead SOIC, 8-lead TSSOP, 3-lead SOT23, 8-pad UDFN, 8-pad XDFN, and
3-lead CONTACT Packages
Applications
Anti-clone Protection for Accessories, Daughter Cards, and Consumables
Secure Boot Validation, Software Anti-piracy
Network and Computer Access Control
Key Exchange for Encrypted Downloads
Authenticated/Encrypted Communications for Control Networks
Atmel-8885D-CryptoAuth-ATSHA204A-Datasheet_072014
1 page  
13. Reference and Application Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
13.1 SHA-256 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
13.2 HMAC/SHA-256 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
13.3 Key Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
13.3.1 Diversified Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
13.3.2 Rolled Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
13.3.3 Created Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
13.3.4 Single-use Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
13.3.5 Limited-use Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
13.3.6 Password Checking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
13.3.7 Transport Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
14. Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
ATSHA204A [DATASHEET]
Atmel-8885D-CryptoAuth-ATSHA204A-Datasheet_072014
5
5 Page 
2.1.2.1 I2C Enable
Bit 0:
If zero, it is a Single-Wire Interface.
If one, it is an I2C interface.
Bit 1–7: Ignored and set by Atmel.
2.1.2.2 I2C Address
I2C
Bit 0:
Bits 1 – 7:
Ignored.
I2C device address
Single-Wire
Bits 0 – 2:
Bit 3:
Bits 4 – 7:
Ignored.
TTL Enable
If zero, then the input level uses a fixed reference.
If one, then the input level uses the VCC reference.
Ignored.
2.1.2.3 CheckMacConfig
This byte applies only to the CheckMac, Read, and Write commands:
Read and Write
Bit 0 controls Slots 0 and 1, bit 1 controls Slots 2 and 3, and so on. Any encrypted Read/Write command
will fail if the value in TempKey.SourceFlag does not match the corresponding bit in this byte. This byte is
ignored for clear text reads and writes.
CheckMac
Bit 0 controls slot 1, bit 1 controls Slot 3 and so on. The copy function will only be enabled if the
CheckMacSource value corresponding to the target slot matches the value of Mode bit 2 of the CheckMac
command. The command will fail if Mode bit 2 does not match TempKey.SourceFlag, so this is equivalent
to requiring the corresponding bit in this byte to match TempKey.SourceFlag.
2.1.2.4 OTP Mode
0xAA (Read-only mode) = When OTP zone is locked, writes are disabled and reads of all words are permitted.
0x55 (Consumption mode) = Writes to the OTP zone when the OTP zone is locked will causes the bits to
transition only from a one to a zero. Reads of all words are permitted.
0x00 (Legacy mode) = When OTP zone is locked, writes are disabled, reads of Words 0 and 1, and 32-byte
reads are disabled.
All other modes are reserved.
2.1.2.5 Selector Mode
If zero, then the Selector will be updated with UpdateExtra.
All other values will only allow the Selector to be updated if it's value is zero.
2.1.2.6 Slot Config
See Table 2-3, SlotConfig Bits (Per Slot).
2.1.2.7 Use Flag
For uses with “single-use slots”. The quantity of “1” bits represents the number of times that slots 0 thru 7 may
be used before being disabled.
ATSHA204A [DATASHEET]
Atmel-8885D-CryptoAuth-ATSHA204A-Datasheet_072014
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet ATSHA204A.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| ATSHA204A | CryptoAuthentication | ATMEL Corporation |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |