crypto4xx_sa.h

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#ifndef __CRYPTO4XX_SA_H__
#define __CRYPTO4XX_SA_H__

#define AES_IV_SIZE             16

union dynamic_sa_contents {
    struct {
        u32 arc4_state_ptr:1;
        u32 arc4_ij_ptr:1;
        u32 state_ptr:1;
        u32 iv3:1;
        u32 iv2:1;
        u32 iv1:1;
        u32 iv0:1;
        u32 seq_num_mask3:1;
        u32 seq_num_mask2:1;
        u32 seq_num_mask1:1;
        u32 seq_num_mask0:1;
        u32 seq_num1:1;
        u32 seq_num0:1;
        u32 spi:1;
        u32 outer_size:5;
        u32 inner_size:5;
        u32 key_size:4;
        u32 cmd_size:4;
    } bf;
    u32 w;
} __attribute__((packed));

#define DIR_OUTBOUND                0
#define DIR_INBOUND             1
#define SA_OP_GROUP_BASIC           0
#define SA_OPCODE_ENCRYPT           0
#define SA_OPCODE_DECRYPT           0
#define SA_OPCODE_HASH              3
#define SA_CIPHER_ALG_DES           0
#define SA_CIPHER_ALG_3DES          1
#define SA_CIPHER_ALG_ARC4          2
#define SA_CIPHER_ALG_AES           3
#define SA_CIPHER_ALG_KASUMI            4
#define SA_CIPHER_ALG_NULL          15

#define SA_HASH_ALG_MD5             0
#define SA_HASH_ALG_SHA1            1
#define SA_HASH_ALG_NULL            15
#define SA_HASH_ALG_SHA1_DIGEST_SIZE        20

#define SA_LOAD_HASH_FROM_SA            0
#define SA_LOAD_HASH_FROM_STATE         2
#define SA_NOT_LOAD_HASH            3
#define SA_LOAD_IV_FROM_SA          0
#define SA_LOAD_IV_FROM_INPUT           1
#define SA_LOAD_IV_FROM_STATE           2
#define SA_LOAD_IV_GEN_IV           3

#define SA_PAD_TYPE_CONSTANT            2
#define SA_PAD_TYPE_ZERO            3
#define SA_PAD_TYPE_TLS             5
#define SA_PAD_TYPE_DTLS            5
#define SA_NOT_SAVE_HASH            0
#define SA_SAVE_HASH                1
#define SA_NOT_SAVE_IV              0
#define SA_SAVE_IV              1
#define SA_HEADER_PROC              1
#define SA_NO_HEADER_PROC           0

union sa_command_0 {
    struct {
        u32 scatter:1;
        u32 gather:1;
        u32 save_hash_state:1;
        u32 save_iv:1;
        u32 load_hash_state:2;
        u32 load_iv:2;
        u32 digest_len:4;
        u32 hdr_proc:1;
        u32 extend_pad:1;
        u32 stream_cipher_pad:1;
        u32 rsv:1;
        u32 hash_alg:4;
        u32 cipher_alg:4;
        u32 pad_type:2;
        u32 op_group:2;
        u32 dir:1;
        u32 opcode:3;
    } bf;
    u32 w;
} __attribute__((packed));

#define CRYPTO_MODE_ECB             0
#define CRYPTO_MODE_CBC             1

#define CRYPTO_FEEDBACK_MODE_NO_FB      0
#define CRYPTO_FEEDBACK_MODE_64BIT_OFB      0
#define CRYPTO_FEEDBACK_MODE_8BIT_CFB       1
#define CRYPTO_FEEDBACK_MODE_1BIT_CFB       2
#define CRYPTO_FEEDBACK_MODE_128BIT_CFB     3

#define SA_AES_KEY_LEN_128          2
#define SA_AES_KEY_LEN_192          3
#define SA_AES_KEY_LEN_256          4

#define SA_REV2                 1

#define SA_HASH_MODE_HASH           0
#define SA_HASH_MODE_HMAC           1
#define SA_MC_ENABLE                0
#define SA_MC_DISABLE               1
#define SA_NOT_COPY_HDR             0
#define SA_COPY_HDR             1
#define SA_NOT_COPY_PAD             0
#define SA_COPY_PAD             1
#define SA_NOT_COPY_PAYLOAD         0
#define SA_COPY_PAYLOAD             1
#define SA_EXTENDED_SN_OFF          0
#define SA_EXTENDED_SN_ON           1
#define SA_SEQ_MASK_OFF             0
#define SA_SEQ_MASK_ON              1

union sa_command_1 {
    struct {
        u32 crypto_mode31:1;
        u32 save_arc4_state:1;
        u32 arc4_stateful:1;
        u32 key_len:5;
        u32 hash_crypto_offset:8;
        u32 sa_rev:2;
        u32 byte_offset:1;
        u32 hmac_muting:1;
        u32 feedback_mode:2;
        u32 crypto_mode9_8:2;
        u32 extended_seq_num:1;
        u32 seq_num_mask:1;
        u32 mutable_bit_proc:1;
        u32 ip_version:1;
        u32 copy_pad:1;
        u32 copy_payload:1;
        u32 copy_hdr:1;
        u32 rsv1:1;
    } bf;
    u32 w;
} __attribute__((packed));

struct dynamic_sa_ctl {
    u32 sa_contents;
    union sa_command_0 sa_command_0;
    union sa_command_1 sa_command_1;
} __attribute__((packed));

struct  sa_state_record {
    u32 save_iv[4];
    u32 save_hash_byte_cnt[2];
    u32 save_digest[16];
} __attribute__((packed));

struct dynamic_sa_aes128 {
    struct dynamic_sa_ctl   ctrl;
    u32 key[4];
    u32 iv[4]; /* for CBC, OFC, and CFB mode */
    u32 state_ptr;
    u32 reserved;
} __attribute__((packed));

#define SA_AES128_LEN       (sizeof(struct dynamic_sa_aes128)/4)
#define SA_AES128_CONTENTS  0x3e000042

/*
 * Security Association (SA) for AES192
 */
struct dynamic_sa_aes192 {
    struct dynamic_sa_ctl ctrl;
    u32 key[6];
    u32 iv[4]; /* for CBC, OFC, and CFB mode */
    u32 state_ptr;
    u32 reserved;
} __attribute__((packed));

#define SA_AES192_LEN       (sizeof(struct dynamic_sa_aes192)/4)
#define SA_AES192_CONTENTS  0x3e000062

struct dynamic_sa_aes256 {
    struct dynamic_sa_ctl ctrl;
    u32 key[8];
    u32 iv[4]; /* for CBC, OFC, and CFB mode */
    u32 state_ptr;
    u32 reserved;
} __attribute__((packed));

#define SA_AES256_LEN       (sizeof(struct dynamic_sa_aes256)/4)
#define SA_AES256_CONTENTS  0x3e000082
#define SA_AES_CONTENTS     0x3e000002

struct dynamic_sa_hash160 {
    struct dynamic_sa_ctl ctrl;
    u32 inner_digest[5];
    u32 outer_digest[5];
    u32 state_ptr;
    u32 reserved;
} __attribute__((packed));
#define SA_HASH160_LEN      (sizeof(struct dynamic_sa_hash160)/4)
#define SA_HASH160_CONTENTS     0x2000a502

#endif