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5812-DS01-R 数据表(PDF) 23 Page - Broadcom Corporation.

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

5812-DS01-R 数据表(HTML) 23 Page - Broadcom Corporation.

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Advance Data Sheet
BCM5812
3/11/03
B roa dcom Co rpo rat ion
Document
5812-DS01-405-R
Cryptographic Operations
Page 15
The command context includes the content type, sequence number, and authenticated length arguments used in
computation of the SSL MAC. The byte ordering of the HMAC secret is the same as that used for the HMAC inner and outer
states for IPsec.
Figure 14: SSL MAC Command Context
The MAC write secret is used to compute the SSL MAC prior to outbound encryption. The MAC read secret would be used
instead for authenticating inbound packets after decryption. The full 20 byte field is required. For MD5, the last four bytes
Table 5: SSL MAC Authentication Codes
Bits
Definition
15:14
Reserved
13:12
Authentication:
• 00 = Invalid
• 01 = MD5
• 10 = SHA-1
• 11 = Invalid
11:0
Reserved
0
LENGTH
31
OPCODE
RESERVED
RESERVED
FLAGS
PAD1
8 Bytes
48 Bytes
BYTE 3
BYTE 4
BYTE 1
BYTE 2
BYTE 7
BYTE 8
BYTE 5
BYTE 6
BYTE 11
BYTE 12
BYTE 9
BYTE 10
BYTE 15
BYTE 16
BYTE 13
BYTE 14
BYTE 19
BYTE 20
BYTE 17
BYTE 18
MAC Write Secret Byte Order
31
0
8
16
24
15 14 13 12
Reserved
0
flags
MAC WRITE SECRET
20 Bytes
SEQUENCE NUMBER
Payload Data Length
Content Type
Reserved
All PAD1 bytes set to 0x36
31
24 23
8 7
0
MSB
LSB
31
0
64-bit Sequence Number From SSL Header
Content Type From SSL Header
Authenticated Length
0
LENGTH
31
OPCODE
RESERVED
RESERVED
FLAGS
PAD1
8 Bytes
48 Bytes
BYTE 3
BYTE 4
BYTE 1
BYTE 2
BYTE 7
BYTE 8
BYTE 5
BYTE 6
BYTE 11
BYTE 12
BYTE 9
BYTE 10
BYTE 15
BYTE 16
BYTE 13
BYTE 14
BYTE 19
BYTE 20
BYTE 17
BYTE 18
MAC Write Secret Byte Order
31
0
8
16
24
15 14 13 12
Reserved
0
flags
MAC WRITE SECRET
20 Bytes
SEQUENCE NUMBER
Payload Data Length
Content Type
Reserved
All PAD1 bytes set to 0x36
31
24 23
8 7
0
MSB
LSB
31
0
64-bit Sequence Number From SSL Header
Content Type From SSL Header
Authenticated Length



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