5802-DS03-R datasheet(25/50 Pages) BOARDCOM

25 / 50 page

Production Specification

■ BCM5802

07/03/02

B roa dcom Co rpo rat ion

Document

5802-DS03-405-R

Memory Structures

Page 17

u16 operation_type; /* Private mode for RSA (0x4) */

u16 q_length; /* Prime q length in bits */

u16 p_length; /* Prime p Length in bits */

u32 p[max_length <= 256 ? 8 : max_length <= 384 ? 12 : 16]; /* Prime p */

u32 q[max_length <= 256 ? 8 : max_length <= 384 ? 12 : 16]; /* Prime q */

u32 dp[max_length <= 256 ? 8 : max_length <= 384 ? 12 : 16];/* CRT private exponent dp

u32 dp[max_length <= 256 ? 8 : max_length <= 384 ? 12 : 16];/* CRT private exponent dq

u32 pinv[max_length <= 256 ? 8 : max_length <= 384 ? 12 : 16]; /* CRT coefficient */

} Pri_RSA_CtxCmdBuf;

where max_length = (p_length > q_length) ? p_length : q_length;

/*DSA signing */

typedef struct DSA_SIGN_CtxCmdBuf_struct {

u16 total_command_structure_length;

u16 operation_type; /* Signing mode for DSA (0x5) */

u16 sha1_enable; /* hash of message performed by SHA1 unit or provided by SW

sha1_enable = 0x0 -> hash provided by SW

sha1_enable = 0x1 -> hash performed by SHA1 unit */

u16 reserved;

u16 rng_enable; /* Random number k generated by RNG or provided by SW

rng_enable = 0x0 -> k provided by SW

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

u16 p_length; /* Modulus p length in bits */

u32 q[5]; /* Modulus q */

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

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

u32 x[5]; /* Private key x */

} DSA_SIGN_CtxCmdBuf;

/*DSA Verification */

typedef struct DSA_VERIFY_CtxCmdBuf_struct {

u16 total_command_structure_length;

u16 operation_type; /* Verification mode for DSA (0x6)*/

u16 sha1_enable; /* hash of message performed by SHA1 unit or provided by SW

sha1_enable = 0x0 -> hash provided by SW

sha1_enable = 0x1 -> hash performed by SHA1 unit */

u16 reserved;

u16 p_length; /* Modulus p length in bits */

u32 q[5]; /* Modulus q */

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

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

u32 y[(p_length <= 512)? 16 : (p_length <= 768)? 24 : 32]; /* Public key y */

} DSA_VERIFY_CtxCmdBuf

/* RNG Bypass */

typedef struct RNG_BYPASS_CtxCmdBuf_struct {

u16 total_command_structure_length; /* 64 bytes long as required by PCI access */

u16 operation_type; /* Bypass RNG mode for RNG (0x41) */

} RNG_BYPASS_CtxCmdBuf

/* RNG SHA1 */

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