5802-DS02-R datasheet(24/50 Pages) BOARDCOM

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■ BCM5802

Production Specification

07/03/02

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Page 16 Memory Structures

Document

5802-DS03-405-R

IKE/SSL/TLS KEY SETUP PROCESSING DATA STRUCTURE

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/* LITTLE ENDIAN command structures for uBSec Chip */

typedef unsigned char u8; /* 8-bit data type */

typedef unsigned short u16; /* 16-bit data type */

typedef unsigned int u32; /* 32-bit data type */

/* Data Buffer chain entry */

typedef struct DataBufChain_struct {

unsigned char *dataAddr;

struct DataBufChain_struct *next;

u16 dataLength;

u16 reserved;

} DataBufChain;

/* Context buffer */

/* Different algorithms have different command context buffers */

/*Diffie-Hellman Send*/

typedef struct DH_SEND_CtxCmdBuf_struct {

u16 total_command_structure_length;

u16 operation_type; /* Send mode for DH (0x1) */

u16 rng_enable; /* Private key x generated by RNG or provided by SW

rng_enable = 0x0 -> x provided by SW

rng_enable = 0x1 -> x generated by RNG */

u16 private_key_length; /* Private key x length in bits*/

u16 generator_length; /*Generator g length in bits*/

u16 modulus_length; /* Modulus N Length in bits */

u32 N[(modulus_length <= 512)? 16 : (modulus_length <= 768)? 24 : 32]; /* Modulus N

u32 g[(modulus_length <= 512)? 16 : (modulus_length <= 768)? 24 : 32]; /* Generator

g */

/* Private key is stored in the data buffer */

} DH_SEND_CtxCmdBuf;

/*Diffie-Hellman Receive*/

typedef struct DH_REC_CtxCmdBuf_struct {

u16 total_command_structure_length;

u16 operation_type; /* Receive mode for DH (0x2) */

u16 exponent_length; /* Exponent (private key x) length in bits */

u16 modulus_length; /* Modulus N Length in bits */

u32 N[(modulus_length <= 512)? 16 : (modulus_length <= 768)? 24 : 32]; /* Modulus N */

} DH_REC_CtxCmdBuf;

/*Public Key RSA*/

typedef struct Pub_RSA_CtxCmdBuf_struct {

u16 total_command_structure_length;

u16 operation_type; /* Public mode for RSA (0x3) */

u16 exponent_length; /* Exponent E length in bits*/

u16 modulus_length; /* Modulus N Length in bits */

u32 N[modulus_length <= 512)? 16 : (modulus_length <= 768)? 24 : 32]; /*

Modulus N */

u32 E [exponent_length + 31)/32]; /* Exponent E */

} Pub_RSA_CtxCmdBuf:

/*Private Key RSA*/

typedef struct Pri_RSA_CtxCmdBuf_struct {

u16 total_command_structure_length;

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