cryptodev.h

   1 /* This is a source compatible implementation with the original API of
   2  * cryptodev by Angelos D. Keromytis, found at openbsd cryptodev.h.
   3  * Placed under public domain */
   4
   5 #ifndef L_CRYPTODEV_H
   6 #define L_CRYPTODEV_H
   7
   8 #ifndef __KERNEL__
   9 #include <inttypes.h>
  10 #endif
  11
  12 /* API extensions for linux */
  13 #define CRYPTO_HMAC_MAX_KEY_LEN         512
  14 #define CRYPTO_CIPHER_MAX_KEY_LEN       64
  15
  16 /* All the supported algorithms
  17  */
  18 typedef enum {
  19         CRYPTO_DES_CBC=1,
  20         CRYPTO_3DES_CBC=2,
  21         CRYPTO_BLF_CBC=3,
  22         CRYPTO_CAST_CBC=4,
  23         CRYPTO_SKIPJACK_CBC=5,
  24         CRYPTO_MD5_HMAC=6,
  25         CRYPTO_SHA1_HMAC=7,
  26         CRYPTO_RIPEMD160_HMAC=8,
  27         CRYPTO_MD5_KPDK=9,
  28         CRYPTO_SHA1_KPDK=10,
  29         CRYPTO_RIJNDAEL128_CBC=11,
  30         CRYPTO_AES_CBC=CRYPTO_RIJNDAEL128_CBC,
  31         CRYPTO_ARC4=12,
  32         CRYPTO_MD5=13,
  33         CRYPTO_SHA1=14,
  34         CRYPTO_DEFLATE_COMP=15,
  35         CRYPTO_NULL=16,
  36         CRYPTO_LZS_COMP=17,
  37         CRYPTO_SHA2_256_HMAC=18,
  38         CRYPTO_SHA2_384_HMAC=19,
  39         CRYPTO_SHA2_512_HMAC=20,
  40         CRYPTO_AES_CTR=21,
  41         CRYPTO_AES_XTS=22,
  42
  43         CRYPTO_CAMELLIA_CBC=101,
  44         CRYPTO_RIPEMD160,
  45         CRYPTO_SHA2_256,
  46         CRYPTO_SHA2_384,
  47         CRYPTO_SHA2_512,
  48         CRYPTO_ALGORITHM_ALL, /* Keep updated - see below */
  49 } cryptodev_crypto_op_t;
  50 #define CRYPTO_ALGORITHM_MAX    (CRYPTO_ALGORITHM_ALL - 1)
  51
  52 /* Values for ciphers */
  53 #define DES_BLOCK_LEN           8
  54 #define DES3_BLOCK_LEN          8
  55 #define RIJNDAEL128_BLOCK_LEN   16
  56 #define AES_BLOCK_LEN           RIJNDAEL128_BLOCK_LEN
  57 #define CAMELLIA_BLOCK_LEN
  58 #define BLOWFISH_BLOCK_LEN      8
  59 #define SKIPJACK_BLOCK_LEN      8
  60 #define CAST128_BLOCK_LEN       8
  61
  62 /* the maximum of the above */
  63 #define EALG_MAX_BLOCK_LEN      16
  64
  65 /* Values for hashes/MAC */
  66 #define AALG_MAX_RESULT_LEN             64
  67
  68 /* input of CIOCGSESSION */
  69 struct session_op {
  70         /* Specify either cipher or mac
  71          */
  72         uint32_t        cipher;         /* cryptodev_crypto_op_t */
  73         uint32_t        mac;            /* cryptodev_crypto_op_t */
  74
  75         uint32_t        keylen;
  76         uint8_t *       key;
  77         uint32_t        mackeylen;
  78         uint8_t *       mackey;
  79
  80         uint32_t        ses;            /* session identifier */
  81 };
  82
  83 #define COP_ENCRYPT     0
  84 #define COP_DECRYPT     1
  85
  86 /* input of CIOCCRYPT */
  87  struct crypt_op {
  88         uint32_t        ses;            /* session identifier */
  89         uint16_t        op;             /* COP_ENCRYPT or COP_DECRYPT */
  90         uint16_t        flags;          /* operational switches, use 0 in doubt */
  91         uint32_t        len;            /* length of source data */
  92         uint8_t *       src;            /* source data */
  93         uint8_t *       dst;            /* pointer to output data */
  94         uint8_t *       mac;            /* pointer to output data for hash/MAC operations */
  95         uint8_t *       iv;             /* initialization vector for encryption operations */
  96 };
  97
  98 /* struct crypt_op flags */
  99
 100 #define COP_FLAG_NONE           (0 << 0) /* totally no flag */
 101 #define COP_FLAG_ZCOPY          (1 << 0) /* operate directly on the userspace buffer */
 102
 103 /* Stuff for bignum arithmetic and public key
 104  * cryptography - not supported yet by linux
 105  * cryptodev.
 106  */
 107
 108 #define CRYPTO_ALG_FLAG_SUPPORTED       1
 109 #define CRYPTO_ALG_FLAG_RNG_ENABLE      2
 110 #define CRYPTO_ALG_FLAG_DSA_SHA         4
 111
 112 struct crparam {
 113         uint8_t*        crp_p;
 114         uint32_t        crp_nbits;
 115 };
 116
 117 #define CRK_MAXPARAM    8
 118
 119 /* input of CIOCKEY */
 120 struct crypt_kop {
 121         uint32_t        crk_op;         /* cryptodev_crk_ot_t */
 122         uint32_t        crk_status;
 123         uint16_t        crk_iparams;
 124         uint16_t        crk_oparams;
 125         uint32_t        crk_pad1;
 126         struct crparam  crk_param[CRK_MAXPARAM];
 127 };
 128
 129 typedef enum {
 130         CRK_MOD_EXP=0,
 131         CRK_MOD_EXP_CRT=1,
 132         CRK_DSA_SIGN=2,
 133         CRK_DSA_VERIFY=3,
 134         CRK_DH_COMPUTE_KEY=4,
 135         CRK_ALGORITHM_ALL
 136 } cryptodev_crk_op_t;
 137
 138 #define CRK_ALGORITHM_MAX       CRK_ALGORITHM_ALL-1
 139
 140 /* features to be queried with CIOCASYMFEAT ioctl
 141  */
 142 #define CRF_MOD_EXP             (1 << CRK_MOD_EXP)
 143 #define CRF_MOD_EXP_CRT         (1 << CRK_MOD_EXP_CRT)
 144 #define CRF_DSA_SIGN            (1 << CRK_DSA_SIGN)
 145 #define CRF_DSA_VERIFY          (1 << CRK_DSA_VERIFY)
 146 #define CRF_DH_COMPUTE_KEY      (1 << CRK_DH_COMPUTE_KEY)
 147
 148
 149 /* ioctl's. Compatible with old linux cryptodev.h
 150  */
 151 #define CRIOGET         _IOWR('c', 101, uint32_t)
 152 #define CIOCGSESSION    _IOWR('c', 102, struct session_op)
 153 #define CIOCFSESSION    _IOW('c', 103, uint32_t)
 154 #define CIOCCRYPT       _IOWR('c', 104, struct crypt_op)
 155 #define CIOCKEY         _IOWR('c', 105, struct crypt_kop)
 156 #define CIOCASYMFEAT    _IOR('c', 106, uint32_t)
 157
 158 #endif /* L_CRYPTODEV_H */