参数资料
| 型号： | AT88SA100S-TSU-T |
| 厂商： | Atmel |
| 文件页数： | 4/23页 |
| 文件大小： | 0K |
| 描述： | IC BATT AUTHENTICATION SOT23-3 |
| 产品培训模块： | CryptoAuthentication™ Introduction |
| 标准包装： | 1 |
| 系列： | CryptoAuthentication™ |
| 功能： | 电池验证 |
| 电源电压： | 2.7 V ~ 5.25 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | TO-236-3，SC-59，SOT-23-3 |
| 供应商设备封装： | SOT-3 |
| 包装： | 标准包装 |
| 其它名称： | AT88SA100S-TSU-TDKR |
1.4
1.4.1
SHA-256 Computation
This chip performs only one cryptographic calculation – a keyed digest of an input challenge using the SHA-256 algorithm,
documented here:
SHA Computation Example
In order to ensure that there is no ambiguity, the following example vector is provided in addition to the sample vectors in the
NIST document. In this example, all values are listed in hex. For all but the key, bytes are listed in the order that they appear
on the bus – first on the left. Key is listed in the same order, so the 01 at the left of the key string is the first byte passed to
SHA-256.
SHA Computation Example
Key
Challenge
Opcode
Mode
Param2
Fuse MfrID
Fuse S/N
01030507090B0D0F11131517191B1D1F21232527292B2D2F31333537393B3D3F
020406080A0C0E10121416181A1C1E20222426282A2C2E30323436383A3C3E40
08
40 (include serial number in message)
0000
77
8899AABB
ROM MfrID CCDD
ROM SN
EEFF
The 88-bytes over which the digest is calculated are:
0103…3D3F0204…3E4001400000…EEFF
Digest:
7D38245733717A488575B9F794F7BCAFE033A3848D39430DA25141FDEBEAA1C2
A read command executed on Address 0 of the ROM (ROM MfrID, ROM SN) would return CC DD EE FF, with CC being the
first byte on the bus and FF being the last.
Throughout this document, the complete message processed by the SA100S chip is documented. According to the above
specification, this always includes a single bit of ‘1’ pad after the message, followed by a 64-bit value representing the total
number of bits being hashed (less pad and length). If the length is less than 447 (512-64-1) then the necessary number of ‘0’
bits are included between the ‘1’ pad and ‘length’ to stretch the last message block out to 512-bits.
When using standard libraries to calculate the SHA-256 digest, these pad and length bits should probably not be passed to the
library as most standard software implementations of the algorithm add them in automatically.
1.5
Security Features
The AT88SA100S incorporates a number of physical security features designed to protect the key from unauthorized release.
These include an active shield over the entire surface of the internal memory encryption, internal clock generation, glitch
protection, voltage tamper detection and other physical design features.
Both the clock and logic supply voltage are internally generated, preventing any direct attack via the pins on these two signals.
4
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AT88SA102S | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:CryptoAuthentication |
| AT88SA102S_10 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Atmel CryptoAuthentication |
| AT88SA102S_11 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Atmel CryptoAuthentication Product Authentication Chip |
| AT88SA102S-SH-T | 功能描述:序列号注册 Product Auth. IC CryptoAuth SHA-256 RoHS:否 制造商:Maxim Integrated 数据总线宽度: 电源电压-最大: 电源电压-最小: 最大工作温度: 最小工作温度: 安装风格: 封装 / 箱体: |
| AT88SA102S-TH-T | 功能描述:序列号注册 58951-Eb CryptoAuth SHA-256 GRN RoHS:否 制造商:Maxim Integrated 数据总线宽度: 电源电压-最大: 电源电压-最小: 最大工作温度: 最小工作温度: 安装风格: 封装 / 箱体: |
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