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参数资料
| 型号： | DS2703G+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/20页 |
| 文件大小： | 0K |
| 描述： | IC BATT AUTHENTICAT SHA-1 8-TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 10,000 |
| 功能： | 电池验证 |
| 电池化学： | 锂离子（Li-Ion） |
| 电源电压： | 2.7 V ~ 5.5 V |
| 工作温度： | -20°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TDFN |
| 供应商设备封装： | 8-TDFN-EP（2x3） |
| 包装： | 带卷 (TR) |
DS2703 SHA-1 Battery Pack Authentication IC
Table 1. Variable Initiation
[31:0]
[23:16]
[15:8]
[7:0]
A
B
C
D
E
67h
EFh
98h
10h
C3h
45h
CDh
BAh
32h
D2h
23h
ABh
DCh
54h
E1h
01h
89h
FEh
76h
F0h
The 160-bit MAC is computed per FIPS 180, including the addition of constants H0-H4. Adding H0-H4 is necessary
only to maintain compliance with FIPS 180. The computed MAC is held in the A-E register memory and then
returned as a 160-bit serial stream, beginning with the least significant bit of variable A.
Table 2. Message Authentication Code (MAC) Return Format
A[31:24]
B[31:24]
C[31:24]
D[31:24]
E[31:24]
A[23:16]
B[23:16]
C[23:16]
D[23:16]
E[23:16]
A[15:8]
B[15:8]
C[15:8]
D[15:8]
E[15:8]
A[7:0]
B[7:0]
C[7:0]
D[7:0]
E[7:0]
SHA-1 HASH ALGORITHM
General Definitions :
This description of the SHA computation is adapted from the Secure Hash Standard SHA-1 document. The
algorithm takes as its input data 16, 32-bit words M t (0 ≤ t ≤ 15) as shown in the SHA-1 Input Message Format
tables. The SHA computation involves six 32-bit word variables labeled A, B, C, D, E, and TMP, five 32-bit word
constants labeled H0, H1, H2, H3, and H4, a sequence of eighty 32-bit words called W t (0 ≤ t ≤ 79), a sequence of
eighty 32-bit words called K t (0 ≤ t ≤ 79), and a Boolean function f t (B,C,D) (0 ≤ t ≤ 79). The operations required for
the SHA computation are arithmetic addition without carry ("+"), logical inversion or 1's complement ("\"), logical
XOR (" ⊕ "), logical AND ("^"), logical OR ("v"), concatenation of 32-bit values (“|”), assignment (":=") and circular
shifting within a 32-bit word. The expression S n (X) represents a circular shift of X by n positions to the left, with X
being a 32-bit word.
The function f t is defined as follows:
f t (B,C,D) = (B^C)v((B\)^D)
= B ⊕ C ⊕ D
= (B^C)v(B^D)v(C^D)
= B ⊕ C ⊕ D
(0 ≤ t ≤ 19)
(20 ≤ t ≤ 39)
(40 ≤ t ≤ 59)
(60 ≤ t ≤ 79)
The sequence K t (0 ≤ t ≤ 79) is defined as follows:
K t := 5A827999h (0 ≤ t ≤ 19)
6ED9EBA1h (20 ≤ t ≤ 39)
8F1BBCDCh (40 ≤ t ≤ 59)
CA62C1D6h (60 ≤ t ≤ 79)
The sequence W t (0 ≤ t ≤ 79) is defined as follows:
W t := M t (see table, FIPS-180 compliant input block)
S 1 (W t-3 ⊕ W t-8 ⊕ W t-14 ⊕ W t-16 ) (16 ≤ t ≤ 79)
6 of 20
(0 ≤ t ≤ 15)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2703K | 功能描述:电池管理 RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| DS2703U | 制造商:Maxim Integrated Products 功能描述:BATT PACK ID W/SHA-1 8PIN USOP - Rail/Tube |
| DS2703U/T&R | 制造商:Maxim Integrated Products 功能描述:BATT PACK ID W/SHA-1 8PIN USOP T&R - Tape and Reel |
| DS2703U+ | 功能描述:电池管理 SHA-1 Battery Pack Authentication RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| DS2703U+R | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:SHA-1 Battery Pack Authentication IC |
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