C++ (Cpp) crypto_spawn_skcipher Examples

Example #1

File: crypto-ccm.c Project: Kanel/CloudMAC-VAP-Driver

static int crypto_ccm_init_tfm(struct crypto_tfm *tfm)
{
	struct crypto_instance *inst = (void *)tfm->__crt_alg;
	struct ccm_instance_ctx *ictx = crypto_instance_ctx(inst);
	struct crypto_ccm_ctx *ctx = crypto_tfm_ctx(tfm);
	struct crypto_cipher *cipher;
	struct crypto_ablkcipher *ctr;
	unsigned long align;
	int err;

	cipher = crypto_spawn_cipher(&ictx->cipher);
	if (IS_ERR(cipher))
		return PTR_ERR(cipher);

	ctr = crypto_spawn_skcipher(&ictx->ctr);
	err = PTR_ERR(ctr);
	if (IS_ERR(ctr))
		goto err_free_cipher;

	ctx->cipher = cipher;
	ctx->ctr = ctr;

	align = crypto_tfm_alg_alignmask(tfm);
	align &= ~(crypto_tfm_ctx_alignment() - 1);
	tfm->crt_aead.reqsize = align +
				sizeof(struct crypto_ccm_req_priv_ctx) +
				crypto_ablkcipher_reqsize(ctr);

	return 0;

err_free_cipher:
	crypto_free_cipher(cipher);
	return err;
}

Example #2

File: blkcipher.c Project: 1111saeid/jb_kernel_3.0.16_htc_golfu

int skcipher_geniv_init(struct crypto_tfm *tfm)
{
	struct crypto_instance *inst = (void *)tfm->__crt_alg;
	struct crypto_ablkcipher *cipher;

	cipher = crypto_spawn_skcipher(crypto_instance_ctx(inst));
	if (IS_ERR(cipher))
		return PTR_ERR(cipher);

	tfm->crt_ablkcipher.base = cipher;
	tfm->crt_ablkcipher.reqsize += crypto_ablkcipher_reqsize(cipher);

	return 0;
}

Example #3

File: lrw.c Project: avagin/linux

static int init_tfm(struct crypto_skcipher *tfm)
{
	struct skcipher_instance *inst = skcipher_alg_instance(tfm);
	struct crypto_skcipher_spawn *spawn = skcipher_instance_ctx(inst);
	struct priv *ctx = crypto_skcipher_ctx(tfm);
	struct crypto_skcipher *cipher;

	cipher = crypto_spawn_skcipher(spawn);
	if (IS_ERR(cipher))
		return PTR_ERR(cipher);

	ctx->child = cipher;

	crypto_skcipher_set_reqsize(tfm, crypto_skcipher_reqsize(cipher) +
					 sizeof(struct rctx));

	return 0;
}

Example #4

File: blkcipher.c Project: kykdev/lolliwiz_lentislte

int skcipher_geniv_init(struct crypto_tfm *tfm)
{
	struct crypto_instance *inst = (void *)tfm->__crt_alg;
	struct crypto_ablkcipher *cipher;

#ifdef CONFIG_CRYPTO_FIPS
    if (unlikely(in_fips_err()))
        return (-EACCES);
#endif

	cipher = crypto_spawn_skcipher(crypto_instance_ctx(inst));
	if (IS_ERR(cipher))
		return PTR_ERR(cipher);

	tfm->crt_ablkcipher.base = cipher;
	tfm->crt_ablkcipher.reqsize += crypto_ablkcipher_reqsize(cipher);

	return 0;
}

Example #5

File: ctr.c Project: 03199618/linux

static int crypto_rfc3686_init_tfm(struct crypto_tfm *tfm)
{
	struct crypto_instance *inst = (void *)tfm->__crt_alg;
	struct crypto_skcipher_spawn *spawn = crypto_instance_ctx(inst);
	struct crypto_rfc3686_ctx *ctx = crypto_tfm_ctx(tfm);
	struct crypto_ablkcipher *cipher;
	unsigned long align;

	cipher = crypto_spawn_skcipher(spawn);
	if (IS_ERR(cipher))
		return PTR_ERR(cipher);

	ctx->child = cipher;

	align = crypto_tfm_alg_alignmask(tfm);
	align &= ~(crypto_tfm_ctx_alignment() - 1);
	tfm->crt_ablkcipher.reqsize = align +
		sizeof(struct crypto_rfc3686_req_ctx) +
		crypto_ablkcipher_reqsize(cipher);

	return 0;
}

Example #6

File: ctr.c Project: abhijit-mahajani-imgtec/linux

static int crypto_rfc3686_init_tfm(struct crypto_skcipher *tfm)
{
	struct skcipher_instance *inst = skcipher_alg_instance(tfm);
	struct crypto_skcipher_spawn *spawn = skcipher_instance_ctx(inst);
	struct crypto_rfc3686_ctx *ctx = crypto_skcipher_ctx(tfm);
	struct crypto_skcipher *cipher;
	unsigned long align;
	unsigned int reqsize;

	cipher = crypto_spawn_skcipher(spawn);
	if (IS_ERR(cipher))
		return PTR_ERR(cipher);

	ctx->child = cipher;

	align = crypto_skcipher_alignmask(tfm);
	align &= ~(crypto_tfm_ctx_alignment() - 1);
	reqsize = align + sizeof(struct crypto_rfc3686_req_ctx) +
		  crypto_skcipher_reqsize(cipher);
	crypto_skcipher_set_reqsize(tfm, reqsize);

	return 0;
}

Example #7

File: gcm.c Project: jtcriswell/linux256

static int crypto_gcm_init_tfm(struct crypto_tfm *tfm)
{
    struct crypto_instance *inst = (void *)tfm->__crt_alg;
    struct gcm_instance_ctx *ictx = crypto_instance_ctx(inst);
    struct crypto_gcm_ctx *ctx = crypto_tfm_ctx(tfm);
    struct crypto_ablkcipher *ctr;
    struct crypto_ahash *ghash;
    unsigned long align;
    int err;

    ghash = crypto_spawn_ahash(&ictx->ghash);
    if (IS_ERR(ghash))
        return PTR_ERR(ghash);

    ctr = crypto_spawn_skcipher(&ictx->ctr);
    err = PTR_ERR(ctr);
    if (IS_ERR(ctr))
        goto err_free_hash;

    ctx->ctr = ctr;
    ctx->ghash = ghash;

    align = crypto_tfm_alg_alignmask(tfm);
    align &= ~(crypto_tfm_ctx_alignment() - 1);
    tfm->crt_aead.reqsize = align +
                            offsetof(struct crypto_gcm_req_priv_ctx, u) +
                            max(sizeof(struct ablkcipher_request) +
                                crypto_ablkcipher_reqsize(ctr),
                                sizeof(struct ahash_request) +
                                crypto_ahash_reqsize(ghash));

    return 0;

err_free_hash:
    crypto_free_ahash(ghash);
    return err;
}