crypto_rol.c File Reference

#include <rz_lib.h>
#include <rz_crypto.h>
#include <rz_util.h>

Go to the source code of this file.

Classes
struct	rol_state

Macros
#define	NAME   "rol"

Enumerations
enum	{ MAX_rol_KEY_SIZE = 32768 }

Functions
static bool	rol_init_state (struct rol_state *const state, const ut8 *key, int keylen)
static void	rol_crypt (struct rol_state *const state, const ut8 *inbuf, ut8 *outbuf, int buflen)
static bool	rol_set_key (RzCrypto *cry, const ut8 *key, int keylen, int mode, int direction)
static int	rol_get_key_size (RzCrypto *cry)
static bool	rol_use (const char *algo)
static bool	update (RzCrypto *cry, const ut8 *buf, int len)
static bool	rol_init (RzCrypto *cry)
static bool	rol_fini (RzCrypto *cry)

Variables
RzCryptoPlugin	rz_crypto_plugin_rol
RZ_API RzLibStruct	rizin_plugin

Macro Definition Documentation

NAME

#define NAME   "rol"

Definition at line 8 of file crypto_rol.c.

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
MAX_rol_KEY_SIZE

Definition at line 10 of file crypto_rol.c.

{ MAX_rol_KEY_SIZE = 32768 };

Function Documentation

rol_crypt()

static void rol_crypt ( struct rol_state *const  state, const ut8 *  inbuf, ut8 *  outbuf, int  buflen  )

static

Definition at line 29 of file crypto_rol.c.

                                                                                                {
    int i;
    for (i = 0; i < buflen; i++) {
        ut8 count = state->key[i % state->key_size] & 7;
        ut8 inByte = inbuf[i];
        outbuf[i] = (inByte << count) | (inByte >> ((8 - count) & 7));
    }
}

References buflen, count, i, inbuf, and outbuf.

Referenced by update().

rol_fini()

static bool rol_fini ( RzCrypto *  cry )

static

Definition at line 82 of file crypto_rol.c.

                                    {
    rz_return_val_if_fail(cry, false);
 
    free(cry->user);
    return true;
}

References free(), rz_return_val_if_fail, and rz_crypto_t::user.

rol_get_key_size()

static int rol_get_key_size ( RzCrypto *  cry )

static

Definition at line 46 of file crypto_rol.c.

                                           {
    rz_return_val_if_fail(cry->user, 0);
    struct rol_state *st = (struct rol_state *)cry->user;
 
    return st->key_size;
}

References rol_state::key_size, rz_return_val_if_fail, and rz_crypto_t::user.

rol_init()

static bool rol_init ( RzCrypto *  cry )

static

Definition at line 75 of file crypto_rol.c.

                                    {
    rz_return_val_if_fail(cry, false);
 
    cry->user = RZ_NEW0(struct rol_state);
    return cry->user != NULL;
}

References NULL, RZ_NEW0, rz_return_val_if_fail, and rz_crypto_t::user.

rol_init_state()

static bool rol_init_state ( struct rol_state *const  state, const ut8 *  key, int  keylen  )

static

Definition at line 17 of file crypto_rol.c.

                                                                                      {
    if (!state || !key || keylen < 1 || keylen > MAX_rol_KEY_SIZE) {
        return false;
    }
    int i;
    state->key_size = keylen;
    for (i = 0; i < keylen; i++) {
        state->key[i] = key[i];
    }
    return true;
}

References i, key, and MAX_rol_KEY_SIZE.

Referenced by rol_set_key().

rol_set_key()

static bool rol_set_key ( RzCrypto *  cry, const ut8 *  key, int  keylen, int  mode, int  direction  )

static

Definition at line 38 of file crypto_rol.c.

                                                                                            {
    rz_return_val_if_fail(cry->user && key, false);
    struct rol_state *st = (struct rol_state *)cry->user;
 
    cry->dir = direction;
    return rol_init_state(st, key, keylen);
}

References rz_crypto_t::dir, key, rol_init_state(), rz_return_val_if_fail, and rz_crypto_t::user.

rol_use()

static bool rol_use ( const char *  algo )

static

Definition at line 53 of file crypto_rol.c.

                                      {
    return !strcmp(algo, NAME);
}

References NAME.

update()

static bool update ( RzCrypto *  cry, const ut8 *  buf, int  len  )

static

Definition at line 57 of file crypto_rol.c.

                                                           {
    rz_return_val_if_fail(cry->user, false);
    struct rol_state *st = (struct rol_state *)cry->user;
 
    if (cry->dir) {
        eprintf("Use ROR algorithm to decrypt\n");
        return false;
    }
    ut8 *obuf = calloc(1, len);
    if (!obuf) {
        return false;
    }
    rol_crypt(st, buf, obuf, len);
    rz_crypto_append(cry, obuf, len);
    free(obuf);
    return true;
}

References calloc(), rz_crypto_t::dir, eprintf, free(), if(), len, obuf, rol_crypt(), rz_crypto_append(), rz_return_val_if_fail, and rz_crypto_t::user.

Variable Documentation

rizin_plugin

RZ_API RzLibStruct rizin_plugin

Initial value:

= {
    .type = RZ_LIB_TYPE_CRYPTO,
    .data = &rz_crypto_plugin_rol,
    .version = RZ_VERSION
}

Definition at line 103 of file crypto_rol.c.

rz_crypto_plugin_rol

RzCryptoPlugin rz_crypto_plugin_rol

Initial value:

= {
    .name = NAME,
    .author = "pancake",
    .license = "LGPL-3",
    .set_key = rol_set_key,
    .get_key_size = rol_get_key_size,
    .use = rol_use,
    .update = update,
    .final = update,
    .init = rol_init,
    .fini = rol_fini,
}

Definition at line 89 of file crypto_rol.c.