5812-DS00-R datasheet(45/84 Pages) BOARDCOM

45 / 84 page

Advance Data Sheet

BCM5812

3/11/03

B roa dcom Co rpo rat ion

Document

5812-DS01-405-R

Cryptographic Operations

Page 37

Figure 33: Modular Subtract

NEXT INPUT FRAGMENT CHAIN ENTRY

RESERVED

FRAGMENT LENGTH

INPUT FRAGMENT ADDRESS

Subtrahend A

(Modulus Length)

Subtractor B

(Modulus Length)

A-B m od N

(Modulus Length)

COMMAND CONTEXT ADDRESS

NEXT INPUT FRAGMENT CHAIN ENTRY

RESERVED

INPUT FRAGMENT LENGTH

INPUT FRAGMENT ADDRESS

RESERVED

NEXT OUTPUT FRAGMENT CHAIN ENTRY

RESERVED

OUTPUT BUFFER LENGTH

OUTPUT FRAGMENT ADDRESS

LENGTH

OPCODE

MODULUS N

64-256

Bytes

MODULUS LENGTH

RESERFVED

Command Context

Packet Descriptor

NEXT INPUT FRAGMENT CHAIN ENTRY

RESERVED

FRAGMENT LENGTH

INPUT FRAGMENT ADDRESS

Subtrahend A

(Modulus Length)

Subtractor B

(Modulus Length)

A-B m od N

(Modulus Length)

COMMAND CONTEXT ADDRESS

NEXT INPUT FRAGMENT CHAIN ENTRY

RESERVED

INPUT FRAGMENT LENGTH

INPUT FRAGMENT ADDRESS

RESERVED

NEXT OUTPUT FRAGMENT CHAIN ENTRY

RESERVED

OUTPUT BUFFER LENGTH

OUTPUT FRAGMENT ADDRESS

COMMAND CONTEXT ADDRESS

NEXT INPUT FRAGMENT CHAIN ENTRY

RESERVED

INPUT FRAGMENT LENGTH

INPUT FRAGMENT ADDRESS

RESERVED

NEXT OUTPUT FRAGMENT CHAIN ENTRY

RESERVED

OUTPUT BUFFER LENGTH

OUTPUT FRAGMENT ADDRESS

COMMAND CONTEXT ADDRESS

NEXT INPUT FRAGMENT CHAIN ENTRY

RESERVED

INPUT FRAGMENT LENGTH

INPUT FRAGMENT ADDRESS

RESERVED

NEXT OUTPUT FRAGMENT CHAIN ENTRY

RESERVED

OUTPUT BUFFER LENGTH

OUTPUT FRAGMENT ADDRESS

LENGTH

OPCODE

MODULUS N

64-256

Bytes

MODULUS LENGTH

RESERFVED

Command Context

LENGTH

OPCODE

MODULUS N

64-256

Bytes

MODULUS LENGTH

RESERFVED

Command Context

Packet Descriptor

5812-DS00-R Datasheet(PDF) 45 Page - Broadcom Corporation.

5812-DS00-R Datasheet(HTML) 45 Page - Broadcom Corporation.

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