cryptodev_int.h

   1 /* cipher stuff */
   2
   3 #ifndef CRYPTODEV_INT_H
   4 # define CRYPTODEV_INT_H
   5
   6 #include <linux/init.h>
   7 #include <linux/sched.h>
   8 #include <linux/fs.h>
   9 #include <linux/file.h>
  10 #include <linux/fdtable.h>
  11 #include <linux/miscdevice.h>
  12 #include <linux/module.h>
  13 #include <linux/moduleparam.h>
  14
  15 #define PFX "cryptodev: "
  16 #define dprintk(level,severity,format,a...)                     \
  17         do {                                            \
  18                 if (level <= cryptodev_verbosity)                               \
  19                         printk(severity PFX "%s[%u]: " format,  \
  20                                current->comm, current->pid,     \
  21                                ##a);                            \
  22         } while (0)
  23
  24 extern int cryptodev_verbosity;
  25
  26 struct cipher_data
  27 {
  28         int init; /* 0 uninitialized */
  29         int blocksize;
  30         int ivsize;
  31         struct {
  32                 struct crypto_ablkcipher* s;
  33                 struct cryptodev_result *result;
  34                 struct ablkcipher_request *request;
  35                 uint8_t iv[EALG_MAX_BLOCK_LEN];
  36         } async;
  37 };
  38
  39 int cryptodev_cipher_init(struct cipher_data* out, const char* alg_name, __user uint8_t * key, size_t keylen);
  40 void cryptodev_cipher_deinit(struct cipher_data* cdata);
  41 ssize_t cryptodev_cipher_decrypt( struct cipher_data* cdata, struct scatterlist *sg1, struct scatterlist *sg2, size_t len);
  42 ssize_t cryptodev_cipher_encrypt( struct cipher_data* cdata, struct scatterlist *sg1, struct scatterlist *sg2, size_t len);
  43 void cryptodev_cipher_set_iv(struct cipher_data* cdata, void* iv, size_t iv_size);
  44
  45 /* hash stuff */
  46 struct hash_data
  47 {
  48         int init; /* 0 uninitialized */
  49         int digestsize;
  50         struct {
  51                 struct crypto_ahash *s;
  52                 struct cryptodev_result *result;
  53                 struct ahash_request *request;
  54         } async;
  55 };
  56
  57 int cryptodev_hash_final( struct hash_data* hdata, void* output);
  58 ssize_t cryptodev_hash_update( struct hash_data* hdata, struct scatterlist *sg, size_t len);
  59 int cryptodev_hash_reset( struct hash_data* hdata);
  60 void cryptodev_hash_deinit(struct hash_data* hdata);
  61 int cryptodev_hash_init( struct hash_data* hdata, const char* alg_name, int hmac_mode, __user void* mackey, size_t mackeylen);
  62
  63 /* compatibility stuff */
  64 #ifdef CONFIG_COMPAT
  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         uint32_t        key;            /* pointer to key data */
  75         uint32_t        mackeylen;
  76         uint32_t        mackey;         /* pointer to mac key data */
  77
  78         uint32_t        ses;            /* session identifier */
  79 } __attribute__((packed));
  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         uint32_t        src;            /* source data */
  88         uint32_t        dst;            /* pointer to output data */
  89         uint32_t        mac;            /* pointer to output data for hash/MAC operations */
  90         uint32_t        iv;             /* initialization vector for encryption operations */
  91 } __attribute__((packed));
  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 */