linux-imx

// SPDX-License-Identifier: GPL-2.0-or-later

/*

 * CCM: Counter with CBC-MAC

 *

 * (C) Copyright IBM Corp. 2007 - Joy Latten <latten@us.ibm.com>

 */

​

#include <crypto/internal/aead.h>

#include <crypto/internal/hash.h>

#include <crypto/internal/skcipher.h>

#include <crypto/scatterwalk.h>

#include <linux/err.h>

#include <linux/init.h>

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/slab.h>

​

#include "internal.h"

​

struct ccm_instance_ctx {

    struct crypto_skcipher_spawn ctr;

    struct crypto_ahash_spawn mac;

};

​

struct crypto_ccm_ctx {

    struct crypto_ahash *mac;

    struct crypto_skcipher *ctr;

};

​

struct crypto_rfc4309_ctx {

    struct crypto_aead *child;

    u8 nonce[3];

};

​

struct crypto_rfc4309_req_ctx {

    struct scatterlist src[3];

    struct scatterlist dst[3];

    struct aead_request subreq;

};

​

struct crypto_ccm_req_priv_ctx {

    u8 odata[16];

    u8 idata[16];

    u8 auth_tag[16];

    u32 flags;

    struct scatterlist src[3];

    struct scatterlist dst[3];

    union {

        struct ahash_request ahreq;

        struct skcipher_request skreq;

    };

};

​

struct cbcmac_tfm_ctx {

    struct crypto_cipher *child;

};

​

struct cbcmac_desc_ctx {

    unsigned int len;

};

​

static inline struct crypto_ccm_req_priv_ctx *crypto_ccm_reqctx(

    struct aead_request *req)