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Commit 4ada4839 authored by Arnaud Ebalard's avatar Arnaud Ebalard Committed by Herbert Xu
Browse files

crypto: marvell/cesa - add Triple-DES support



Add support for Triple-DES operations.

Signed-off-by: default avatarArnaud Ebalard <arno@natisbad.org>
Signed-off-by: default avatarBoris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 7b3aaaa0
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+2 −0
Original line number Diff line number Diff line
@@ -171,6 +171,8 @@ static void mv_cesa_remove_algs(struct mv_cesa_dev *cesa)
static struct crypto_alg *armada_370_cipher_algs[] = {
	&mv_cesa_ecb_des_alg,
	&mv_cesa_cbc_des_alg,
	&mv_cesa_ecb_des3_ede_alg,
	&mv_cesa_cbc_des3_ede_alg,
	&mv_cesa_ecb_aes_alg,
	&mv_cesa_cbc_aes_alg,
};
+2 −0
Original line number Diff line number Diff line
@@ -779,6 +779,8 @@ extern struct ahash_alg mv_ahmac_sha1_alg;

extern struct crypto_alg mv_cesa_ecb_des_alg;
extern struct crypto_alg mv_cesa_cbc_des_alg;
extern struct crypto_alg mv_cesa_ecb_des3_ede_alg;
extern struct crypto_alg mv_cesa_cbc_des3_ede_alg;
extern struct crypto_alg mv_cesa_ecb_aes_alg;
extern struct crypto_alg mv_cesa_cbc_aes_alg;

+147 −0
Original line number Diff line number Diff line
@@ -22,6 +22,11 @@ struct mv_cesa_des_ctx {
	u8 key[DES_KEY_SIZE];
};

struct mv_cesa_des3_ctx {
	struct mv_cesa_ctx base;
	u8 key[DES3_EDE_KEY_SIZE];
};

struct mv_cesa_aes_ctx {
	struct mv_cesa_ctx base;
	struct crypto_aes_ctx aes;
@@ -268,6 +273,22 @@ static int mv_cesa_des_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
	return 0;
}

static int mv_cesa_des3_ede_setkey(struct crypto_ablkcipher *cipher,
				   const u8 *key, unsigned int len)
{
	struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);
	struct mv_cesa_des_ctx *ctx = crypto_tfm_ctx(tfm);

	if (len != DES3_EDE_KEY_SIZE) {
		crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
		return -EINVAL;
	}

	memcpy(ctx->key, key, DES3_EDE_KEY_SIZE);

	return 0;
}

static int mv_cesa_ablkcipher_dma_req_init(struct ablkcipher_request *req,
				const struct mv_cesa_op_ctx *op_templ)
{
@@ -514,6 +535,132 @@ struct crypto_alg mv_cesa_cbc_des_alg = {
	},
};

static int mv_cesa_des3_op(struct ablkcipher_request *req,
			   struct mv_cesa_op_ctx *tmpl)
{
	struct mv_cesa_des3_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
	int ret;

	mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTM_3DES,
			      CESA_SA_DESC_CFG_CRYPTM_MSK);

	memcpy(tmpl->ctx.blkcipher.key, ctx->key, DES3_EDE_KEY_SIZE);

	ret = mv_cesa_ablkcipher_req_init(req, tmpl);
	if (ret)
		return ret;

	ret = mv_cesa_queue_req(&req->base);
	if (ret && ret != -EINPROGRESS)
		mv_cesa_ablkcipher_cleanup(req);

	return ret;
}

static int mv_cesa_ecb_des3_ede_encrypt(struct ablkcipher_request *req)
{
	struct mv_cesa_op_ctx tmpl;

	mv_cesa_set_op_cfg(&tmpl,
			   CESA_SA_DESC_CFG_CRYPTCM_ECB |
			   CESA_SA_DESC_CFG_3DES_EDE |
			   CESA_SA_DESC_CFG_DIR_ENC);

	return mv_cesa_des3_op(req, &tmpl);
}

static int mv_cesa_ecb_des3_ede_decrypt(struct ablkcipher_request *req)
{
	struct mv_cesa_op_ctx tmpl;

	mv_cesa_set_op_cfg(&tmpl,
			   CESA_SA_DESC_CFG_CRYPTCM_ECB |
			   CESA_SA_DESC_CFG_3DES_EDE |
			   CESA_SA_DESC_CFG_DIR_DEC);

	return mv_cesa_des3_op(req, &tmpl);
}

struct crypto_alg mv_cesa_ecb_des3_ede_alg = {
	.cra_name = "ecb(des3_ede)",
	.cra_driver_name = "mv-ecb-des3-ede",
	.cra_priority = 300,
	.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
		     CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
	.cra_blocksize = DES3_EDE_BLOCK_SIZE,
	.cra_ctxsize = sizeof(struct mv_cesa_des3_ctx),
	.cra_alignmask = 0,
	.cra_type = &crypto_ablkcipher_type,
	.cra_module = THIS_MODULE,
	.cra_init = mv_cesa_ablkcipher_cra_init,
	.cra_u = {
		.ablkcipher = {
			.min_keysize = DES3_EDE_KEY_SIZE,
			.max_keysize = DES3_EDE_KEY_SIZE,
			.ivsize	     = DES3_EDE_BLOCK_SIZE,
			.setkey = mv_cesa_des3_ede_setkey,
			.encrypt = mv_cesa_ecb_des3_ede_encrypt,
			.decrypt = mv_cesa_ecb_des3_ede_decrypt,
		},
	},
};

static int mv_cesa_cbc_des3_op(struct ablkcipher_request *req,
			       struct mv_cesa_op_ctx *tmpl)
{
	memcpy(tmpl->ctx.blkcipher.iv, req->info, DES3_EDE_BLOCK_SIZE);

	return mv_cesa_des3_op(req, tmpl);
}

static int mv_cesa_cbc_des3_ede_encrypt(struct ablkcipher_request *req)
{
	struct mv_cesa_op_ctx tmpl;

	mv_cesa_set_op_cfg(&tmpl,
			   CESA_SA_DESC_CFG_CRYPTCM_CBC |
			   CESA_SA_DESC_CFG_3DES_EDE |
			   CESA_SA_DESC_CFG_DIR_ENC);

	return mv_cesa_cbc_des3_op(req, &tmpl);
}

static int mv_cesa_cbc_des3_ede_decrypt(struct ablkcipher_request *req)
{
	struct mv_cesa_op_ctx tmpl;

	mv_cesa_set_op_cfg(&tmpl,
			   CESA_SA_DESC_CFG_CRYPTCM_CBC |
			   CESA_SA_DESC_CFG_3DES_EDE |
			   CESA_SA_DESC_CFG_DIR_DEC);

	return mv_cesa_cbc_des3_op(req, &tmpl);
}

struct crypto_alg mv_cesa_cbc_des3_ede_alg = {
	.cra_name = "cbc(des3_ede)",
	.cra_driver_name = "mv-cbc-des3-ede",
	.cra_priority = 300,
	.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
		     CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
	.cra_blocksize = DES3_EDE_BLOCK_SIZE,
	.cra_ctxsize = sizeof(struct mv_cesa_des3_ctx),
	.cra_alignmask = 0,
	.cra_type = &crypto_ablkcipher_type,
	.cra_module = THIS_MODULE,
	.cra_init = mv_cesa_ablkcipher_cra_init,
	.cra_u = {
		.ablkcipher = {
			.min_keysize = DES3_EDE_KEY_SIZE,
			.max_keysize = DES3_EDE_KEY_SIZE,
			.ivsize	     = DES3_EDE_BLOCK_SIZE,
			.setkey = mv_cesa_des3_ede_setkey,
			.encrypt = mv_cesa_cbc_des3_ede_encrypt,
			.decrypt = mv_cesa_cbc_des3_ede_decrypt,
		},
	},
};

static int mv_cesa_aes_op(struct ablkcipher_request *req,
			  struct mv_cesa_op_ctx *tmpl)
{