5812-DS00-R datasheet(39/84 Pages) BOARDCOM

39 / 84 page

Advance Data Sheet

BCM5812

3/11/03

B roa dcom Co rpo rat ion

Document

5812-DS01-405-R

Cryptographic Operations

Page 31

Figure 28: RSA Private Key

The command context lengths depend upon the parameter field sizes, as was the case with Diffie-Hellman. Prime P and

Prime Q lengths are in bits.

This command uses MCR2@, and opcode 0x04.

Table 11: Allowed RSA Private Key Parameter Size Increments

Modulus Length, in Bits

Parameter Size in 32-bit words

Parameter SIze in Bytes

16-256

257-384

385-512

513-768

769-1024

128

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

Input

(Modulus Length)

Output

(Modulus Length)

LENGTH

Command Context

OPCODE

PRIME P LENGTH

PRIME P

32-128

Bytes

PRIME Q LENGTH

PRIME Q

32-128

Bytes

EXPONENT DQ

32-128

Bytes

EXPONENT DP

32-128

Bytes

CRT COOEFICIENT PINV

32-128

Bytes

Packet Descriptor

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

Input

(Modulus Length)

Output

(Modulus Length)

LENGTH

Command Context

OPCODE

PRIME P LENGTH

PRIME P

32-128

Bytes

PRIME P

32-128

Bytes

PRIME Q LENGTH

PRIME Q

32-128

Bytes

PRIME Q

32-128

Bytes

EXPONENT DQ

32-128

Bytes

EXPONENT DQ

32-128

Bytes

EXPONENT DP

32-128

Bytes

EXPONENT DP

32-128

Bytes

CRT COOEFICIENT PINV

32-128

Bytes

CRT COOEFICIENT PINV

32-128

Bytes

Packet Descriptor

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