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5812-DS01-R 数据表(PDF) 22 Page - Broadcom Corporation.

部件名 5812-DS01-R
功能描述  Security Processor
PDF  84 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  BOARDCOM [Broadcom Corporation.]
网页  http://www.broadcom.com
标志 BOARDCOM - Broadcom Corporation.

5812-DS01-R 数据表(HTML) 22 Page - Broadcom Corporation.

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BCM5812
Advance Data Sheet
3/11/03
B roa dcom Co rpo rat ion
Page 14
Cryptographic Operations
Document
5812-DS01-405-R
Figure 12: SSL MAC Computation Using MD5
The computation using SHA-1 differs only in the length of the MAC secret (20 bytes) and the number of pad bytes (40 rather
than 48). Figure 13 diagrams the SSL MAC computation using SHA-1.
Figure 13: SSL MAC Computation Using SHA-1
Figure 14 on page 15 shows the command context used for computing the SSL MAC. Table 5 shows the codes for MD5 and
SHA-1. The SSL MAC command context length is always 88 bytes.
This command uses MCR1@. The opcode for this command is 0x01.
0
31
SSL MAC Computation (MD5)
Authenticated Length
MAC Secret (16 Bytes)
Content Type
Application Data
PAD1 (48 Bytes of 0x36)
Sequence Number (8 Bytes)
0
31
MAC Secret (16 Bytes)
PAD2 (48 Bytes of 0x5C)
Hash value (16 Bytes)
MD5
Output
MD5
Output
0
31
SSL MAC Computation (MD5)
Authenticated Length
MAC Secret (16 Bytes)
Content Type
Application Data
PAD1 (48 Bytes of 0x36)
Sequence Number (8 Bytes)
0
31
MAC Secret (16 Bytes)
PAD2 (48 Bytes of 0x5C)
Hash value (16 Bytes)
MD5
Output
MD5
Output
0
31
SSL MAC Computation (SHA-1)
Authenticated Length
MAC Secret (20 Bytes)
Content Type
Application Data
PAD1 (40 Bytes of 0x36)
Sequence Number (8 Bytes)
0
31
MAC Secret (20 Bytes)
PAD2 (40 Bytes of 0x5C)
Hash value (20 Bytes)
SHA-1
Output
SHA-1
Output
0
31
SSL MAC Computation (SHA-1)
Authenticated Length
MAC Secret (20 Bytes)
Content Type
Application Data
PAD1 (40 Bytes of 0x36)
Sequence Number (8 Bytes)
0
31
MAC Secret (20 Bytes)
PAD2 (40 Bytes of 0x5C)
Hash value (20 Bytes)
SHA-1
Output
SHA-1
Output



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