cryptodev_int.h

   1 /* cipher stuff */
   2 #ifndef CRYPTODEV_INT_H
   3 # define CRYPTODEV_INT_H
   4
   5 #include <linux/init.h>
   6 #include <linux/sched.h>
   7 #include <linux/fs.h>
   8 #include <linux/file.h>
   9 #include <linux/fdtable.h>
  10 #include <linux/miscdevice.h>
  11 #include <linux/module.h>
  12 #include <linux/moduleparam.h>
  13
  14 #define PFX "cryptodev: "
  15 #define dprintk(level,severity,format,a...)                     \
  16         do {                                            \
  17                 if (level <= cryptodev_verbosity)                               \
  18                         printk(severity PFX "%s[%u]: " format,  \
  19                                current->comm, current->pid,     \
  20                                ##a);                            \
  21         } while (0)
  22
  23 extern int cryptodev_verbosity;
  24
  25 struct cipher_data
  26 {
  27         int init; /* 0 uninitialized */
  28         int blocksize;
  29         int ivsize;
  30         struct {
  31                 struct crypto_ablkcipher* s;
  32                 struct cryptodev_result *result;
  33                 struct ablkcipher_request *request;
  34                 uint8_t iv[EALG_MAX_BLOCK_LEN];
  35         } async;
  36 };
  37
  38 int cryptodev_cipher_init(struct cipher_data* out, const char* alg_name, __user uint8_t * key, size_t keylen);
  39 void cryptodev_cipher_deinit(struct cipher_data* cdata);
  40 ssize_t cryptodev_cipher_decrypt( struct cipher_data* cdata, struct scatterlist *sg1, struct scatterlist *sg2, size_t len);
  41 ssize_t cryptodev_cipher_encrypt( struct cipher_data* cdata, struct scatterlist *sg1, struct scatterlist *sg2, size_t len);
  42 int cryptodev_cipher_set_iv(struct cipher_data* cdata, void* iv, size_t iv_size);
  43
  44 /* hash stuff */
  45 struct hash_data
  46 {
  47         int init; /* 0 uninitialized */
  48         int digestsize;
  49         struct {
  50                 struct crypto_ahash *s;
  51                 struct cryptodev_result *result;
  52                 struct ahash_request *request;
  53         } async;
  54 };
  55
  56 int cryptodev_hash_final( struct hash_data* hdata, void* output);
  57 ssize_t cryptodev_hash_update( struct hash_data* hdata, struct scatterlist *sg, size_t len);
  58 int cryptodev_hash_reset( struct hash_data* hdata);
  59 void cryptodev_hash_deinit(struct hash_data* hdata);
  60 int cryptodev_hash_init( struct hash_data* hdata, const char* alg_name, int hmac_mode, __user void* mackey, size_t mackeylen);
  61
  62 /* compatibility stuff */
  63 #ifdef CONFIG_COMPAT
  64 #include <linux/compat.h>
  65
  66 /* input of CIOCGSESSION */
  67 struct compat_session_op {
  68         /* Specify either cipher or mac
  69          */
  70         uint32_t        cipher;         /* cryptodev_crypto_op_t */
  71         uint32_t        mac;            /* cryptodev_crypto_op_t */
  72
  73         uint32_t        keylen;
  74         compat_uptr_t   key;            /* pointer to key data */
  75         uint32_t        mackeylen;
  76         compat_uptr_t   mackey;         /* pointer to mac key data */
  77
  78         uint32_t        ses;            /* session identifier */
  79 };
  80
  81 /* input of CIOCCRYPT */
  82  struct compat_crypt_op {
  83         uint32_t        ses;            /* session identifier */
  84         uint16_t        op;             /* COP_ENCRYPT or COP_DECRYPT */
  85         uint16_t        flags;          /* no usage so far, use 0 */
  86         uint32_t        len;            /* length of source data */
  87         compat_uptr_t   src;            /* source data */
  88         compat_uptr_t   dst;            /* pointer to output data */
  89         compat_uptr_t   mac;            /* pointer to output data for hash/MAC operations */
  90         compat_uptr_t   iv;             /* initialization vector for encryption operations */
  91 };
  92
  93 /* compat ioctls, defined for the above structs */
  94 #define COMPAT_CIOCGSESSION    _IOWR('c', 102, struct compat_session_op)
  95 #define COMPAT_CIOCCRYPT       _IOWR('c', 104, struct compat_crypt_op)
  96
  97 #endif /* CONFIG_COMPAT */
  98
  99 #endif /* CRYPTODEV_INT_H */