From 4ada483978237068bf21c0dc318af676145bfed5 Mon Sep 17 00:00:00 2001 From: Arnaud Ebalard Date: Thu, 18 Jun 2015 15:46:23 +0200 Subject: crypto: marvell/cesa - add Triple-DES support Add support for Triple-DES operations. Signed-off-by: Arnaud Ebalard Signed-off-by: Boris Brezillon Signed-off-by: Herbert Xu --- drivers/crypto/marvell/cesa.c | 2 + drivers/crypto/marvell/cesa.h | 2 + drivers/crypto/marvell/cipher.c | 147 ++++++++++++++++++++++++++++++++++++++++ 3 files changed, 151 insertions(+) (limited to 'drivers/crypto') diff --git a/drivers/crypto/marvell/cesa.c b/drivers/crypto/marvell/cesa.c index 212840e346d1..c0b1b49cbba5 100644 --- a/drivers/crypto/marvell/cesa.c +++ b/drivers/crypto/marvell/cesa.c @@ -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, }; diff --git a/drivers/crypto/marvell/cesa.h b/drivers/crypto/marvell/cesa.h index 4b07209526bd..1229c3d75b71 100644 --- a/drivers/crypto/marvell/cesa.h +++ b/drivers/crypto/marvell/cesa.h @@ -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; diff --git a/drivers/crypto/marvell/cipher.c b/drivers/crypto/marvell/cipher.c index e420ea6c0ec4..0745cf3b9c0e 100644 --- a/drivers/crypto/marvell/cipher.c +++ b/drivers/crypto/marvell/cipher.c @@ -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) { -- cgit v1.2.3