mirror of https://gitee.com/openkylin/linux.git
1437 lines
39 KiB
C
1437 lines
39 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright (C) 2012-2018 ARM Limited or its affiliates. */
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <crypto/algapi.h>
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#include <crypto/internal/skcipher.h>
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#include <crypto/des.h>
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#include <crypto/xts.h>
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#include <crypto/scatterwalk.h>
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#include "cc_driver.h"
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#include "cc_lli_defs.h"
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#include "cc_buffer_mgr.h"
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#include "cc_cipher.h"
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#include "cc_request_mgr.h"
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#define MAX_ABLKCIPHER_SEQ_LEN 6
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#define template_skcipher template_u.skcipher
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struct cc_cipher_handle {
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struct list_head alg_list;
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};
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struct cc_user_key_info {
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u8 *key;
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dma_addr_t key_dma_addr;
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};
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struct cc_hw_key_info {
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enum cc_hw_crypto_key key1_slot;
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enum cc_hw_crypto_key key2_slot;
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};
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struct cc_cipher_ctx {
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struct cc_drvdata *drvdata;
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int keylen;
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int key_round_number;
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int cipher_mode;
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int flow_mode;
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unsigned int flags;
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bool hw_key;
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struct cc_user_key_info user;
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struct cc_hw_key_info hw;
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struct crypto_shash *shash_tfm;
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};
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static void cc_cipher_complete(struct device *dev, void *cc_req, int err);
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static inline bool cc_is_hw_key(struct crypto_tfm *tfm)
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{
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struct cc_cipher_ctx *ctx_p = crypto_tfm_ctx(tfm);
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return ctx_p->hw_key;
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}
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static int validate_keys_sizes(struct cc_cipher_ctx *ctx_p, u32 size)
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{
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switch (ctx_p->flow_mode) {
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case S_DIN_to_AES:
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switch (size) {
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case CC_AES_128_BIT_KEY_SIZE:
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case CC_AES_192_BIT_KEY_SIZE:
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if (ctx_p->cipher_mode != DRV_CIPHER_XTS &&
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ctx_p->cipher_mode != DRV_CIPHER_ESSIV &&
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ctx_p->cipher_mode != DRV_CIPHER_BITLOCKER)
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return 0;
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break;
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case CC_AES_256_BIT_KEY_SIZE:
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return 0;
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case (CC_AES_192_BIT_KEY_SIZE * 2):
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case (CC_AES_256_BIT_KEY_SIZE * 2):
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if (ctx_p->cipher_mode == DRV_CIPHER_XTS ||
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ctx_p->cipher_mode == DRV_CIPHER_ESSIV ||
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ctx_p->cipher_mode == DRV_CIPHER_BITLOCKER)
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return 0;
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break;
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default:
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break;
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}
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case S_DIN_to_DES:
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if (size == DES3_EDE_KEY_SIZE || size == DES_KEY_SIZE)
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return 0;
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break;
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default:
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break;
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}
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return -EINVAL;
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}
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static int validate_data_size(struct cc_cipher_ctx *ctx_p,
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unsigned int size)
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{
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switch (ctx_p->flow_mode) {
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case S_DIN_to_AES:
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switch (ctx_p->cipher_mode) {
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case DRV_CIPHER_XTS:
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if (size >= AES_BLOCK_SIZE &&
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IS_ALIGNED(size, AES_BLOCK_SIZE))
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return 0;
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break;
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case DRV_CIPHER_CBC_CTS:
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if (size >= AES_BLOCK_SIZE)
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return 0;
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break;
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case DRV_CIPHER_OFB:
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case DRV_CIPHER_CTR:
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return 0;
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case DRV_CIPHER_ECB:
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case DRV_CIPHER_CBC:
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case DRV_CIPHER_ESSIV:
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case DRV_CIPHER_BITLOCKER:
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if (IS_ALIGNED(size, AES_BLOCK_SIZE))
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return 0;
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break;
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default:
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break;
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}
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break;
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case S_DIN_to_DES:
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if (IS_ALIGNED(size, DES_BLOCK_SIZE))
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return 0;
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break;
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default:
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break;
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}
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return -EINVAL;
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}
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static int cc_cipher_init(struct crypto_tfm *tfm)
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{
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struct cc_cipher_ctx *ctx_p = crypto_tfm_ctx(tfm);
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struct cc_crypto_alg *cc_alg =
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container_of(tfm->__crt_alg, struct cc_crypto_alg,
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skcipher_alg.base);
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struct device *dev = drvdata_to_dev(cc_alg->drvdata);
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unsigned int max_key_buf_size = cc_alg->skcipher_alg.max_keysize;
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int rc = 0;
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dev_dbg(dev, "Initializing context @%p for %s\n", ctx_p,
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crypto_tfm_alg_name(tfm));
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crypto_skcipher_set_reqsize(__crypto_skcipher_cast(tfm),
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sizeof(struct cipher_req_ctx));
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ctx_p->cipher_mode = cc_alg->cipher_mode;
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ctx_p->flow_mode = cc_alg->flow_mode;
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ctx_p->drvdata = cc_alg->drvdata;
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/* Allocate key buffer, cache line aligned */
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ctx_p->user.key = kmalloc(max_key_buf_size, GFP_KERNEL);
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if (!ctx_p->user.key)
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return -ENOMEM;
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dev_dbg(dev, "Allocated key buffer in context. key=@%p\n",
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ctx_p->user.key);
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/* Map key buffer */
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ctx_p->user.key_dma_addr = dma_map_single(dev, (void *)ctx_p->user.key,
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max_key_buf_size,
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DMA_TO_DEVICE);
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if (dma_mapping_error(dev, ctx_p->user.key_dma_addr)) {
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dev_err(dev, "Mapping Key %u B at va=%pK for DMA failed\n",
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max_key_buf_size, ctx_p->user.key);
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return -ENOMEM;
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}
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dev_dbg(dev, "Mapped key %u B at va=%pK to dma=%pad\n",
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max_key_buf_size, ctx_p->user.key, &ctx_p->user.key_dma_addr);
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if (ctx_p->cipher_mode == DRV_CIPHER_ESSIV) {
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/* Alloc hash tfm for essiv */
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ctx_p->shash_tfm = crypto_alloc_shash("sha256-generic", 0, 0);
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if (IS_ERR(ctx_p->shash_tfm)) {
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dev_err(dev, "Error allocating hash tfm for ESSIV.\n");
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return PTR_ERR(ctx_p->shash_tfm);
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}
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}
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return rc;
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}
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static void cc_cipher_exit(struct crypto_tfm *tfm)
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{
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struct crypto_alg *alg = tfm->__crt_alg;
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struct cc_crypto_alg *cc_alg =
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container_of(alg, struct cc_crypto_alg,
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skcipher_alg.base);
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unsigned int max_key_buf_size = cc_alg->skcipher_alg.max_keysize;
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struct cc_cipher_ctx *ctx_p = crypto_tfm_ctx(tfm);
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struct device *dev = drvdata_to_dev(ctx_p->drvdata);
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dev_dbg(dev, "Clearing context @%p for %s\n",
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crypto_tfm_ctx(tfm), crypto_tfm_alg_name(tfm));
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if (ctx_p->cipher_mode == DRV_CIPHER_ESSIV) {
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/* Free hash tfm for essiv */
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crypto_free_shash(ctx_p->shash_tfm);
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ctx_p->shash_tfm = NULL;
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}
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/* Unmap key buffer */
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dma_unmap_single(dev, ctx_p->user.key_dma_addr, max_key_buf_size,
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DMA_TO_DEVICE);
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dev_dbg(dev, "Unmapped key buffer key_dma_addr=%pad\n",
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&ctx_p->user.key_dma_addr);
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/* Free key buffer in context */
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kzfree(ctx_p->user.key);
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dev_dbg(dev, "Free key buffer in context. key=@%p\n", ctx_p->user.key);
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}
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struct tdes_keys {
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u8 key1[DES_KEY_SIZE];
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u8 key2[DES_KEY_SIZE];
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u8 key3[DES_KEY_SIZE];
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};
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static enum cc_hw_crypto_key cc_slot_to_hw_key(int slot_num)
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{
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switch (slot_num) {
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case 0:
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return KFDE0_KEY;
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case 1:
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return KFDE1_KEY;
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case 2:
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return KFDE2_KEY;
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case 3:
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return KFDE3_KEY;
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}
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return END_OF_KEYS;
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}
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static int cc_cipher_sethkey(struct crypto_skcipher *sktfm, const u8 *key,
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unsigned int keylen)
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{
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struct crypto_tfm *tfm = crypto_skcipher_tfm(sktfm);
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struct cc_cipher_ctx *ctx_p = crypto_tfm_ctx(tfm);
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struct device *dev = drvdata_to_dev(ctx_p->drvdata);
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struct cc_hkey_info hki;
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dev_dbg(dev, "Setting HW key in context @%p for %s. keylen=%u\n",
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ctx_p, crypto_tfm_alg_name(tfm), keylen);
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dump_byte_array("key", (u8 *)key, keylen);
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/* STAT_PHASE_0: Init and sanity checks */
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/* This check the size of the hardware key token */
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if (keylen != sizeof(hki)) {
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dev_err(dev, "Unsupported HW key size %d.\n", keylen);
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crypto_tfm_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
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return -EINVAL;
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}
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if (ctx_p->flow_mode != S_DIN_to_AES) {
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dev_err(dev, "HW key not supported for non-AES flows\n");
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return -EINVAL;
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}
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memcpy(&hki, key, keylen);
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/* The real key len for crypto op is the size of the HW key
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* referenced by the HW key slot, not the hardware key token
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*/
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keylen = hki.keylen;
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if (validate_keys_sizes(ctx_p, keylen)) {
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dev_err(dev, "Unsupported key size %d.\n", keylen);
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crypto_tfm_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
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return -EINVAL;
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}
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ctx_p->hw.key1_slot = cc_slot_to_hw_key(hki.hw_key1);
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if (ctx_p->hw.key1_slot == END_OF_KEYS) {
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dev_err(dev, "Unsupported hw key1 number (%d)\n", hki.hw_key1);
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return -EINVAL;
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}
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if (ctx_p->cipher_mode == DRV_CIPHER_XTS ||
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ctx_p->cipher_mode == DRV_CIPHER_ESSIV ||
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ctx_p->cipher_mode == DRV_CIPHER_BITLOCKER) {
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if (hki.hw_key1 == hki.hw_key2) {
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dev_err(dev, "Illegal hw key numbers (%d,%d)\n",
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hki.hw_key1, hki.hw_key2);
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return -EINVAL;
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}
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ctx_p->hw.key2_slot = cc_slot_to_hw_key(hki.hw_key2);
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if (ctx_p->hw.key2_slot == END_OF_KEYS) {
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dev_err(dev, "Unsupported hw key2 number (%d)\n",
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hki.hw_key2);
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return -EINVAL;
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}
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}
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ctx_p->keylen = keylen;
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ctx_p->hw_key = true;
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dev_dbg(dev, "cc_is_hw_key ret 0");
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return 0;
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}
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static int cc_cipher_setkey(struct crypto_skcipher *sktfm, const u8 *key,
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unsigned int keylen)
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{
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struct crypto_tfm *tfm = crypto_skcipher_tfm(sktfm);
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struct cc_cipher_ctx *ctx_p = crypto_tfm_ctx(tfm);
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struct device *dev = drvdata_to_dev(ctx_p->drvdata);
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u32 tmp[DES3_EDE_EXPKEY_WORDS];
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struct cc_crypto_alg *cc_alg =
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container_of(tfm->__crt_alg, struct cc_crypto_alg,
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skcipher_alg.base);
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unsigned int max_key_buf_size = cc_alg->skcipher_alg.max_keysize;
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dev_dbg(dev, "Setting key in context @%p for %s. keylen=%u\n",
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ctx_p, crypto_tfm_alg_name(tfm), keylen);
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dump_byte_array("key", (u8 *)key, keylen);
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/* STAT_PHASE_0: Init and sanity checks */
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if (validate_keys_sizes(ctx_p, keylen)) {
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dev_err(dev, "Unsupported key size %d.\n", keylen);
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crypto_tfm_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
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return -EINVAL;
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}
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ctx_p->hw_key = false;
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/*
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* Verify DES weak keys
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* Note that we're dropping the expanded key since the
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* HW does the expansion on its own.
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*/
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if (ctx_p->flow_mode == S_DIN_to_DES) {
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if (keylen == DES3_EDE_KEY_SIZE &&
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__des3_ede_setkey(tmp, &tfm->crt_flags, key,
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DES3_EDE_KEY_SIZE)) {
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dev_dbg(dev, "weak 3DES key");
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return -EINVAL;
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} else if (!des_ekey(tmp, key) &&
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(crypto_tfm_get_flags(tfm) & CRYPTO_TFM_REQ_WEAK_KEY)) {
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tfm->crt_flags |= CRYPTO_TFM_RES_WEAK_KEY;
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dev_dbg(dev, "weak DES key");
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return -EINVAL;
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}
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}
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if (ctx_p->cipher_mode == DRV_CIPHER_XTS &&
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xts_check_key(tfm, key, keylen)) {
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dev_dbg(dev, "weak XTS key");
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return -EINVAL;
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}
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/* STAT_PHASE_1: Copy key to ctx */
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dma_sync_single_for_cpu(dev, ctx_p->user.key_dma_addr,
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max_key_buf_size, DMA_TO_DEVICE);
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memcpy(ctx_p->user.key, key, keylen);
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if (keylen == 24)
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memset(ctx_p->user.key + 24, 0, CC_AES_KEY_SIZE_MAX - 24);
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if (ctx_p->cipher_mode == DRV_CIPHER_ESSIV) {
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/* sha256 for key2 - use sw implementation */
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int key_len = keylen >> 1;
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int err;
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SHASH_DESC_ON_STACK(desc, ctx_p->shash_tfm);
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desc->tfm = ctx_p->shash_tfm;
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err = crypto_shash_digest(desc, ctx_p->user.key, key_len,
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ctx_p->user.key + key_len);
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if (err) {
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dev_err(dev, "Failed to hash ESSIV key.\n");
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return err;
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}
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}
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dma_sync_single_for_device(dev, ctx_p->user.key_dma_addr,
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max_key_buf_size, DMA_TO_DEVICE);
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ctx_p->keylen = keylen;
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dev_dbg(dev, "return safely");
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return 0;
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}
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static void cc_setup_cipher_desc(struct crypto_tfm *tfm,
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struct cipher_req_ctx *req_ctx,
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unsigned int ivsize, unsigned int nbytes,
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struct cc_hw_desc desc[],
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unsigned int *seq_size)
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{
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struct cc_cipher_ctx *ctx_p = crypto_tfm_ctx(tfm);
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struct device *dev = drvdata_to_dev(ctx_p->drvdata);
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int cipher_mode = ctx_p->cipher_mode;
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int flow_mode = ctx_p->flow_mode;
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int direction = req_ctx->gen_ctx.op_type;
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dma_addr_t key_dma_addr = ctx_p->user.key_dma_addr;
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unsigned int key_len = ctx_p->keylen;
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dma_addr_t iv_dma_addr = req_ctx->gen_ctx.iv_dma_addr;
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unsigned int du_size = nbytes;
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struct cc_crypto_alg *cc_alg =
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container_of(tfm->__crt_alg, struct cc_crypto_alg,
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skcipher_alg.base);
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if (cc_alg->data_unit)
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du_size = cc_alg->data_unit;
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switch (cipher_mode) {
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case DRV_CIPHER_CBC:
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case DRV_CIPHER_CBC_CTS:
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case DRV_CIPHER_CTR:
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case DRV_CIPHER_OFB:
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/* Load cipher state */
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hw_desc_init(&desc[*seq_size]);
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set_din_type(&desc[*seq_size], DMA_DLLI, iv_dma_addr, ivsize,
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NS_BIT);
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set_cipher_config0(&desc[*seq_size], direction);
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set_flow_mode(&desc[*seq_size], flow_mode);
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set_cipher_mode(&desc[*seq_size], cipher_mode);
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if (cipher_mode == DRV_CIPHER_CTR ||
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cipher_mode == DRV_CIPHER_OFB) {
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set_setup_mode(&desc[*seq_size], SETUP_LOAD_STATE1);
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} else {
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set_setup_mode(&desc[*seq_size], SETUP_LOAD_STATE0);
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}
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(*seq_size)++;
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/*FALLTHROUGH*/
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case DRV_CIPHER_ECB:
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/* Load key */
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hw_desc_init(&desc[*seq_size]);
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set_cipher_mode(&desc[*seq_size], cipher_mode);
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set_cipher_config0(&desc[*seq_size], direction);
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if (flow_mode == S_DIN_to_AES) {
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if (cc_is_hw_key(tfm)) {
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set_hw_crypto_key(&desc[*seq_size],
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ctx_p->hw.key1_slot);
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} else {
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set_din_type(&desc[*seq_size], DMA_DLLI,
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key_dma_addr, ((key_len == 24) ?
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AES_MAX_KEY_SIZE :
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key_len), NS_BIT);
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}
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set_key_size_aes(&desc[*seq_size], key_len);
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} else {
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/*des*/
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set_din_type(&desc[*seq_size], DMA_DLLI, key_dma_addr,
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key_len, NS_BIT);
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set_key_size_des(&desc[*seq_size], key_len);
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}
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set_flow_mode(&desc[*seq_size], flow_mode);
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set_setup_mode(&desc[*seq_size], SETUP_LOAD_KEY0);
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(*seq_size)++;
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break;
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case DRV_CIPHER_XTS:
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case DRV_CIPHER_ESSIV:
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case DRV_CIPHER_BITLOCKER:
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/* Load AES key */
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hw_desc_init(&desc[*seq_size]);
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set_cipher_mode(&desc[*seq_size], cipher_mode);
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set_cipher_config0(&desc[*seq_size], direction);
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|
if (cc_is_hw_key(tfm)) {
|
|
set_hw_crypto_key(&desc[*seq_size],
|
|
ctx_p->hw.key1_slot);
|
|
} else {
|
|
set_din_type(&desc[*seq_size], DMA_DLLI, key_dma_addr,
|
|
(key_len / 2), NS_BIT);
|
|
}
|
|
set_key_size_aes(&desc[*seq_size], (key_len / 2));
|
|
set_flow_mode(&desc[*seq_size], flow_mode);
|
|
set_setup_mode(&desc[*seq_size], SETUP_LOAD_KEY0);
|
|
(*seq_size)++;
|
|
|
|
/* load XEX key */
|
|
hw_desc_init(&desc[*seq_size]);
|
|
set_cipher_mode(&desc[*seq_size], cipher_mode);
|
|
set_cipher_config0(&desc[*seq_size], direction);
|
|
if (cc_is_hw_key(tfm)) {
|
|
set_hw_crypto_key(&desc[*seq_size],
|
|
ctx_p->hw.key2_slot);
|
|
} else {
|
|
set_din_type(&desc[*seq_size], DMA_DLLI,
|
|
(key_dma_addr + (key_len / 2)),
|
|
(key_len / 2), NS_BIT);
|
|
}
|
|
set_xex_data_unit_size(&desc[*seq_size], du_size);
|
|
set_flow_mode(&desc[*seq_size], S_DIN_to_AES2);
|
|
set_key_size_aes(&desc[*seq_size], (key_len / 2));
|
|
set_setup_mode(&desc[*seq_size], SETUP_LOAD_XEX_KEY);
|
|
(*seq_size)++;
|
|
|
|
/* Set state */
|
|
hw_desc_init(&desc[*seq_size]);
|
|
set_setup_mode(&desc[*seq_size], SETUP_LOAD_STATE1);
|
|
set_cipher_mode(&desc[*seq_size], cipher_mode);
|
|
set_cipher_config0(&desc[*seq_size], direction);
|
|
set_key_size_aes(&desc[*seq_size], (key_len / 2));
|
|
set_flow_mode(&desc[*seq_size], flow_mode);
|
|
set_din_type(&desc[*seq_size], DMA_DLLI, iv_dma_addr,
|
|
CC_AES_BLOCK_SIZE, NS_BIT);
|
|
(*seq_size)++;
|
|
break;
|
|
default:
|
|
dev_err(dev, "Unsupported cipher mode (%d)\n", cipher_mode);
|
|
}
|
|
}
|
|
|
|
static void cc_setup_cipher_data(struct crypto_tfm *tfm,
|
|
struct cipher_req_ctx *req_ctx,
|
|
struct scatterlist *dst,
|
|
struct scatterlist *src, unsigned int nbytes,
|
|
void *areq, struct cc_hw_desc desc[],
|
|
unsigned int *seq_size)
|
|
{
|
|
struct cc_cipher_ctx *ctx_p = crypto_tfm_ctx(tfm);
|
|
struct device *dev = drvdata_to_dev(ctx_p->drvdata);
|
|
unsigned int flow_mode = ctx_p->flow_mode;
|
|
|
|
switch (ctx_p->flow_mode) {
|
|
case S_DIN_to_AES:
|
|
flow_mode = DIN_AES_DOUT;
|
|
break;
|
|
case S_DIN_to_DES:
|
|
flow_mode = DIN_DES_DOUT;
|
|
break;
|
|
default:
|
|
dev_err(dev, "invalid flow mode, flow_mode = %d\n", flow_mode);
|
|
return;
|
|
}
|
|
/* Process */
|
|
if (req_ctx->dma_buf_type == CC_DMA_BUF_DLLI) {
|
|
dev_dbg(dev, " data params addr %pad length 0x%X\n",
|
|
&sg_dma_address(src), nbytes);
|
|
dev_dbg(dev, " data params addr %pad length 0x%X\n",
|
|
&sg_dma_address(dst), nbytes);
|
|
hw_desc_init(&desc[*seq_size]);
|
|
set_din_type(&desc[*seq_size], DMA_DLLI, sg_dma_address(src),
|
|
nbytes, NS_BIT);
|
|
set_dout_dlli(&desc[*seq_size], sg_dma_address(dst),
|
|
nbytes, NS_BIT, (!areq ? 0 : 1));
|
|
if (areq)
|
|
set_queue_last_ind(ctx_p->drvdata, &desc[*seq_size]);
|
|
|
|
set_flow_mode(&desc[*seq_size], flow_mode);
|
|
(*seq_size)++;
|
|
} else {
|
|
/* bypass */
|
|
dev_dbg(dev, " bypass params addr %pad length 0x%X addr 0x%08X\n",
|
|
&req_ctx->mlli_params.mlli_dma_addr,
|
|
req_ctx->mlli_params.mlli_len,
|
|
(unsigned int)ctx_p->drvdata->mlli_sram_addr);
|
|
hw_desc_init(&desc[*seq_size]);
|
|
set_din_type(&desc[*seq_size], DMA_DLLI,
|
|
req_ctx->mlli_params.mlli_dma_addr,
|
|
req_ctx->mlli_params.mlli_len, NS_BIT);
|
|
set_dout_sram(&desc[*seq_size],
|
|
ctx_p->drvdata->mlli_sram_addr,
|
|
req_ctx->mlli_params.mlli_len);
|
|
set_flow_mode(&desc[*seq_size], BYPASS);
|
|
(*seq_size)++;
|
|
|
|
hw_desc_init(&desc[*seq_size]);
|
|
set_din_type(&desc[*seq_size], DMA_MLLI,
|
|
ctx_p->drvdata->mlli_sram_addr,
|
|
req_ctx->in_mlli_nents, NS_BIT);
|
|
if (req_ctx->out_nents == 0) {
|
|
dev_dbg(dev, " din/dout params addr 0x%08X addr 0x%08X\n",
|
|
(unsigned int)ctx_p->drvdata->mlli_sram_addr,
|
|
(unsigned int)ctx_p->drvdata->mlli_sram_addr);
|
|
set_dout_mlli(&desc[*seq_size],
|
|
ctx_p->drvdata->mlli_sram_addr,
|
|
req_ctx->in_mlli_nents, NS_BIT,
|
|
(!areq ? 0 : 1));
|
|
} else {
|
|
dev_dbg(dev, " din/dout params addr 0x%08X addr 0x%08X\n",
|
|
(unsigned int)ctx_p->drvdata->mlli_sram_addr,
|
|
(unsigned int)ctx_p->drvdata->mlli_sram_addr +
|
|
(u32)LLI_ENTRY_BYTE_SIZE * req_ctx->in_nents);
|
|
set_dout_mlli(&desc[*seq_size],
|
|
(ctx_p->drvdata->mlli_sram_addr +
|
|
(LLI_ENTRY_BYTE_SIZE *
|
|
req_ctx->in_mlli_nents)),
|
|
req_ctx->out_mlli_nents, NS_BIT,
|
|
(!areq ? 0 : 1));
|
|
}
|
|
if (areq)
|
|
set_queue_last_ind(ctx_p->drvdata, &desc[*seq_size]);
|
|
|
|
set_flow_mode(&desc[*seq_size], flow_mode);
|
|
(*seq_size)++;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Update a CTR-AES 128 bit counter
|
|
*/
|
|
static void cc_update_ctr(u8 *ctr, unsigned int increment)
|
|
{
|
|
if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) ||
|
|
IS_ALIGNED((unsigned long)ctr, 8)) {
|
|
|
|
__be64 *high_be = (__be64 *)ctr;
|
|
__be64 *low_be = high_be + 1;
|
|
u64 orig_low = __be64_to_cpu(*low_be);
|
|
u64 new_low = orig_low + (u64)increment;
|
|
|
|
*low_be = __cpu_to_be64(new_low);
|
|
|
|
if (new_low < orig_low)
|
|
*high_be = __cpu_to_be64(__be64_to_cpu(*high_be) + 1);
|
|
} else {
|
|
u8 *pos = (ctr + AES_BLOCK_SIZE);
|
|
u8 val;
|
|
unsigned int size;
|
|
|
|
for (; increment; increment--)
|
|
for (size = AES_BLOCK_SIZE; size; size--) {
|
|
val = *--pos + 1;
|
|
*pos = val;
|
|
if (val)
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void cc_cipher_complete(struct device *dev, void *cc_req, int err)
|
|
{
|
|
struct skcipher_request *req = (struct skcipher_request *)cc_req;
|
|
struct scatterlist *dst = req->dst;
|
|
struct scatterlist *src = req->src;
|
|
struct cipher_req_ctx *req_ctx = skcipher_request_ctx(req);
|
|
struct crypto_skcipher *sk_tfm = crypto_skcipher_reqtfm(req);
|
|
struct crypto_tfm *tfm = crypto_skcipher_tfm(sk_tfm);
|
|
struct cc_cipher_ctx *ctx_p = crypto_tfm_ctx(tfm);
|
|
unsigned int ivsize = crypto_skcipher_ivsize(sk_tfm);
|
|
unsigned int len;
|
|
|
|
switch (ctx_p->cipher_mode) {
|
|
case DRV_CIPHER_CBC:
|
|
/*
|
|
* The crypto API expects us to set the req->iv to the last
|
|
* ciphertext block. For encrypt, simply copy from the result.
|
|
* For decrypt, we must copy from a saved buffer since this
|
|
* could be an in-place decryption operation and the src is
|
|
* lost by this point.
|
|
*/
|
|
if (req_ctx->gen_ctx.op_type == DRV_CRYPTO_DIRECTION_DECRYPT) {
|
|
memcpy(req->iv, req_ctx->backup_info, ivsize);
|
|
kzfree(req_ctx->backup_info);
|
|
} else if (!err) {
|
|
len = req->cryptlen - ivsize;
|
|
scatterwalk_map_and_copy(req->iv, req->dst, len,
|
|
ivsize, 0);
|
|
}
|
|
break;
|
|
|
|
case DRV_CIPHER_CTR:
|
|
/* Compute the counter of the last block */
|
|
len = ALIGN(req->cryptlen, AES_BLOCK_SIZE) / AES_BLOCK_SIZE;
|
|
cc_update_ctr((u8 *)req->iv, len);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
cc_unmap_cipher_request(dev, req_ctx, ivsize, src, dst);
|
|
kzfree(req_ctx->iv);
|
|
|
|
skcipher_request_complete(req, err);
|
|
}
|
|
|
|
static int cc_cipher_process(struct skcipher_request *req,
|
|
enum drv_crypto_direction direction)
|
|
{
|
|
struct crypto_skcipher *sk_tfm = crypto_skcipher_reqtfm(req);
|
|
struct crypto_tfm *tfm = crypto_skcipher_tfm(sk_tfm);
|
|
struct cipher_req_ctx *req_ctx = skcipher_request_ctx(req);
|
|
unsigned int ivsize = crypto_skcipher_ivsize(sk_tfm);
|
|
struct scatterlist *dst = req->dst;
|
|
struct scatterlist *src = req->src;
|
|
unsigned int nbytes = req->cryptlen;
|
|
void *iv = req->iv;
|
|
struct cc_cipher_ctx *ctx_p = crypto_tfm_ctx(tfm);
|
|
struct device *dev = drvdata_to_dev(ctx_p->drvdata);
|
|
struct cc_hw_desc desc[MAX_ABLKCIPHER_SEQ_LEN];
|
|
struct cc_crypto_req cc_req = {};
|
|
int rc;
|
|
unsigned int seq_len = 0;
|
|
gfp_t flags = cc_gfp_flags(&req->base);
|
|
|
|
dev_dbg(dev, "%s req=%p iv=%p nbytes=%d\n",
|
|
((direction == DRV_CRYPTO_DIRECTION_ENCRYPT) ?
|
|
"Encrypt" : "Decrypt"), req, iv, nbytes);
|
|
|
|
/* STAT_PHASE_0: Init and sanity checks */
|
|
|
|
/* TODO: check data length according to mode */
|
|
if (validate_data_size(ctx_p, nbytes)) {
|
|
dev_err(dev, "Unsupported data size %d.\n", nbytes);
|
|
crypto_tfm_set_flags(tfm, CRYPTO_TFM_RES_BAD_BLOCK_LEN);
|
|
rc = -EINVAL;
|
|
goto exit_process;
|
|
}
|
|
if (nbytes == 0) {
|
|
/* No data to process is valid */
|
|
rc = 0;
|
|
goto exit_process;
|
|
}
|
|
|
|
/* The IV we are handed may be allocted from the stack so
|
|
* we must copy it to a DMAable buffer before use.
|
|
*/
|
|
req_ctx->iv = kmemdup(iv, ivsize, flags);
|
|
if (!req_ctx->iv) {
|
|
rc = -ENOMEM;
|
|
goto exit_process;
|
|
}
|
|
|
|
/* Setup request structure */
|
|
cc_req.user_cb = (void *)cc_cipher_complete;
|
|
cc_req.user_arg = (void *)req;
|
|
|
|
/* Setup request context */
|
|
req_ctx->gen_ctx.op_type = direction;
|
|
|
|
/* STAT_PHASE_1: Map buffers */
|
|
|
|
rc = cc_map_cipher_request(ctx_p->drvdata, req_ctx, ivsize, nbytes,
|
|
req_ctx->iv, src, dst, flags);
|
|
if (rc) {
|
|
dev_err(dev, "map_request() failed\n");
|
|
goto exit_process;
|
|
}
|
|
|
|
/* STAT_PHASE_2: Create sequence */
|
|
|
|
/* Setup processing */
|
|
cc_setup_cipher_desc(tfm, req_ctx, ivsize, nbytes, desc, &seq_len);
|
|
/* Data processing */
|
|
cc_setup_cipher_data(tfm, req_ctx, dst, src, nbytes, req, desc,
|
|
&seq_len);
|
|
|
|
/* STAT_PHASE_3: Lock HW and push sequence */
|
|
|
|
rc = cc_send_request(ctx_p->drvdata, &cc_req, desc, seq_len,
|
|
&req->base);
|
|
if (rc != -EINPROGRESS && rc != -EBUSY) {
|
|
/* Failed to send the request or request completed
|
|
* synchronously
|
|
*/
|
|
cc_unmap_cipher_request(dev, req_ctx, ivsize, src, dst);
|
|
}
|
|
|
|
exit_process:
|
|
if (rc != -EINPROGRESS && rc != -EBUSY) {
|
|
kzfree(req_ctx->backup_info);
|
|
kzfree(req_ctx->iv);
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int cc_cipher_encrypt(struct skcipher_request *req)
|
|
{
|
|
struct cipher_req_ctx *req_ctx = skcipher_request_ctx(req);
|
|
|
|
memset(req_ctx, 0, sizeof(*req_ctx));
|
|
|
|
return cc_cipher_process(req, DRV_CRYPTO_DIRECTION_ENCRYPT);
|
|
}
|
|
|
|
static int cc_cipher_decrypt(struct skcipher_request *req)
|
|
{
|
|
struct crypto_skcipher *sk_tfm = crypto_skcipher_reqtfm(req);
|
|
struct crypto_tfm *tfm = crypto_skcipher_tfm(sk_tfm);
|
|
struct cc_cipher_ctx *ctx_p = crypto_tfm_ctx(tfm);
|
|
struct cipher_req_ctx *req_ctx = skcipher_request_ctx(req);
|
|
unsigned int ivsize = crypto_skcipher_ivsize(sk_tfm);
|
|
gfp_t flags = cc_gfp_flags(&req->base);
|
|
unsigned int len;
|
|
|
|
memset(req_ctx, 0, sizeof(*req_ctx));
|
|
|
|
if (ctx_p->cipher_mode == DRV_CIPHER_CBC) {
|
|
|
|
/* Allocate and save the last IV sized bytes of the source,
|
|
* which will be lost in case of in-place decryption.
|
|
*/
|
|
req_ctx->backup_info = kzalloc(ivsize, flags);
|
|
if (!req_ctx->backup_info)
|
|
return -ENOMEM;
|
|
|
|
len = req->cryptlen - ivsize;
|
|
scatterwalk_map_and_copy(req_ctx->backup_info, req->src, len,
|
|
ivsize, 0);
|
|
}
|
|
|
|
return cc_cipher_process(req, DRV_CRYPTO_DIRECTION_DECRYPT);
|
|
}
|
|
|
|
/* Block cipher alg */
|
|
static const struct cc_alg_template skcipher_algs[] = {
|
|
{
|
|
.name = "xts(paes)",
|
|
.driver_name = "xts-paes-ccree",
|
|
.blocksize = AES_BLOCK_SIZE,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_sethkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = CC_HW_KEY_SIZE,
|
|
.max_keysize = CC_HW_KEY_SIZE,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_XTS,
|
|
.flow_mode = S_DIN_to_AES,
|
|
.min_hw_rev = CC_HW_REV_630,
|
|
},
|
|
{
|
|
.name = "xts512(paes)",
|
|
.driver_name = "xts-paes-du512-ccree",
|
|
.blocksize = AES_BLOCK_SIZE,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_sethkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = CC_HW_KEY_SIZE,
|
|
.max_keysize = CC_HW_KEY_SIZE,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_XTS,
|
|
.flow_mode = S_DIN_to_AES,
|
|
.data_unit = 512,
|
|
.min_hw_rev = CC_HW_REV_712,
|
|
},
|
|
{
|
|
.name = "xts4096(paes)",
|
|
.driver_name = "xts-paes-du4096-ccree",
|
|
.blocksize = AES_BLOCK_SIZE,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_sethkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = CC_HW_KEY_SIZE,
|
|
.max_keysize = CC_HW_KEY_SIZE,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_XTS,
|
|
.flow_mode = S_DIN_to_AES,
|
|
.data_unit = 4096,
|
|
.min_hw_rev = CC_HW_REV_712,
|
|
},
|
|
{
|
|
.name = "essiv(paes)",
|
|
.driver_name = "essiv-paes-ccree",
|
|
.blocksize = AES_BLOCK_SIZE,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_sethkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = CC_HW_KEY_SIZE,
|
|
.max_keysize = CC_HW_KEY_SIZE,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_ESSIV,
|
|
.flow_mode = S_DIN_to_AES,
|
|
.min_hw_rev = CC_HW_REV_712,
|
|
},
|
|
{
|
|
.name = "essiv512(paes)",
|
|
.driver_name = "essiv-paes-du512-ccree",
|
|
.blocksize = AES_BLOCK_SIZE,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_sethkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = CC_HW_KEY_SIZE,
|
|
.max_keysize = CC_HW_KEY_SIZE,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_ESSIV,
|
|
.flow_mode = S_DIN_to_AES,
|
|
.data_unit = 512,
|
|
.min_hw_rev = CC_HW_REV_712,
|
|
},
|
|
{
|
|
.name = "essiv4096(paes)",
|
|
.driver_name = "essiv-paes-du4096-ccree",
|
|
.blocksize = AES_BLOCK_SIZE,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_sethkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = CC_HW_KEY_SIZE,
|
|
.max_keysize = CC_HW_KEY_SIZE,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_ESSIV,
|
|
.flow_mode = S_DIN_to_AES,
|
|
.data_unit = 4096,
|
|
.min_hw_rev = CC_HW_REV_712,
|
|
},
|
|
{
|
|
.name = "bitlocker(paes)",
|
|
.driver_name = "bitlocker-paes-ccree",
|
|
.blocksize = AES_BLOCK_SIZE,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_sethkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = CC_HW_KEY_SIZE,
|
|
.max_keysize = CC_HW_KEY_SIZE,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_BITLOCKER,
|
|
.flow_mode = S_DIN_to_AES,
|
|
.min_hw_rev = CC_HW_REV_712,
|
|
},
|
|
{
|
|
.name = "bitlocker512(paes)",
|
|
.driver_name = "bitlocker-paes-du512-ccree",
|
|
.blocksize = AES_BLOCK_SIZE,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_sethkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = CC_HW_KEY_SIZE,
|
|
.max_keysize = CC_HW_KEY_SIZE,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_BITLOCKER,
|
|
.flow_mode = S_DIN_to_AES,
|
|
.data_unit = 512,
|
|
.min_hw_rev = CC_HW_REV_712,
|
|
},
|
|
{
|
|
.name = "bitlocker4096(paes)",
|
|
.driver_name = "bitlocker-paes-du4096-ccree",
|
|
.blocksize = AES_BLOCK_SIZE,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_sethkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = CC_HW_KEY_SIZE,
|
|
.max_keysize = CC_HW_KEY_SIZE,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_BITLOCKER,
|
|
.flow_mode = S_DIN_to_AES,
|
|
.data_unit = 4096,
|
|
.min_hw_rev = CC_HW_REV_712,
|
|
},
|
|
{
|
|
.name = "ecb(paes)",
|
|
.driver_name = "ecb-paes-ccree",
|
|
.blocksize = AES_BLOCK_SIZE,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_sethkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = CC_HW_KEY_SIZE,
|
|
.max_keysize = CC_HW_KEY_SIZE,
|
|
.ivsize = 0,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_ECB,
|
|
.flow_mode = S_DIN_to_AES,
|
|
.min_hw_rev = CC_HW_REV_712,
|
|
},
|
|
{
|
|
.name = "cbc(paes)",
|
|
.driver_name = "cbc-paes-ccree",
|
|
.blocksize = AES_BLOCK_SIZE,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_sethkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = CC_HW_KEY_SIZE,
|
|
.max_keysize = CC_HW_KEY_SIZE,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_CBC,
|
|
.flow_mode = S_DIN_to_AES,
|
|
.min_hw_rev = CC_HW_REV_712,
|
|
},
|
|
{
|
|
.name = "ofb(paes)",
|
|
.driver_name = "ofb-paes-ccree",
|
|
.blocksize = AES_BLOCK_SIZE,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_sethkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = CC_HW_KEY_SIZE,
|
|
.max_keysize = CC_HW_KEY_SIZE,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_OFB,
|
|
.flow_mode = S_DIN_to_AES,
|
|
.min_hw_rev = CC_HW_REV_712,
|
|
},
|
|
{
|
|
.name = "cts(cbc(paes))",
|
|
.driver_name = "cts-cbc-paes-ccree",
|
|
.blocksize = AES_BLOCK_SIZE,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_sethkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = CC_HW_KEY_SIZE,
|
|
.max_keysize = CC_HW_KEY_SIZE,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_CBC_CTS,
|
|
.flow_mode = S_DIN_to_AES,
|
|
.min_hw_rev = CC_HW_REV_712,
|
|
},
|
|
{
|
|
.name = "ctr(paes)",
|
|
.driver_name = "ctr-paes-ccree",
|
|
.blocksize = 1,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_sethkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = CC_HW_KEY_SIZE,
|
|
.max_keysize = CC_HW_KEY_SIZE,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_CTR,
|
|
.flow_mode = S_DIN_to_AES,
|
|
.min_hw_rev = CC_HW_REV_712,
|
|
},
|
|
{
|
|
.name = "xts(aes)",
|
|
.driver_name = "xts-aes-ccree",
|
|
.blocksize = AES_BLOCK_SIZE,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_setkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = AES_MIN_KEY_SIZE * 2,
|
|
.max_keysize = AES_MAX_KEY_SIZE * 2,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_XTS,
|
|
.flow_mode = S_DIN_to_AES,
|
|
.min_hw_rev = CC_HW_REV_630,
|
|
},
|
|
{
|
|
.name = "xts512(aes)",
|
|
.driver_name = "xts-aes-du512-ccree",
|
|
.blocksize = AES_BLOCK_SIZE,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_setkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = AES_MIN_KEY_SIZE * 2,
|
|
.max_keysize = AES_MAX_KEY_SIZE * 2,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_XTS,
|
|
.flow_mode = S_DIN_to_AES,
|
|
.data_unit = 512,
|
|
.min_hw_rev = CC_HW_REV_712,
|
|
},
|
|
{
|
|
.name = "xts4096(aes)",
|
|
.driver_name = "xts-aes-du4096-ccree",
|
|
.blocksize = AES_BLOCK_SIZE,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_setkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = AES_MIN_KEY_SIZE * 2,
|
|
.max_keysize = AES_MAX_KEY_SIZE * 2,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_XTS,
|
|
.flow_mode = S_DIN_to_AES,
|
|
.data_unit = 4096,
|
|
.min_hw_rev = CC_HW_REV_712,
|
|
},
|
|
{
|
|
.name = "essiv(aes)",
|
|
.driver_name = "essiv-aes-ccree",
|
|
.blocksize = AES_BLOCK_SIZE,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_setkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = AES_MIN_KEY_SIZE * 2,
|
|
.max_keysize = AES_MAX_KEY_SIZE * 2,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_ESSIV,
|
|
.flow_mode = S_DIN_to_AES,
|
|
.min_hw_rev = CC_HW_REV_712,
|
|
},
|
|
{
|
|
.name = "essiv512(aes)",
|
|
.driver_name = "essiv-aes-du512-ccree",
|
|
.blocksize = AES_BLOCK_SIZE,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_setkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = AES_MIN_KEY_SIZE * 2,
|
|
.max_keysize = AES_MAX_KEY_SIZE * 2,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_ESSIV,
|
|
.flow_mode = S_DIN_to_AES,
|
|
.data_unit = 512,
|
|
.min_hw_rev = CC_HW_REV_712,
|
|
},
|
|
{
|
|
.name = "essiv4096(aes)",
|
|
.driver_name = "essiv-aes-du4096-ccree",
|
|
.blocksize = AES_BLOCK_SIZE,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_setkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = AES_MIN_KEY_SIZE * 2,
|
|
.max_keysize = AES_MAX_KEY_SIZE * 2,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_ESSIV,
|
|
.flow_mode = S_DIN_to_AES,
|
|
.data_unit = 4096,
|
|
.min_hw_rev = CC_HW_REV_712,
|
|
},
|
|
{
|
|
.name = "bitlocker(aes)",
|
|
.driver_name = "bitlocker-aes-ccree",
|
|
.blocksize = AES_BLOCK_SIZE,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_setkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = AES_MIN_KEY_SIZE * 2,
|
|
.max_keysize = AES_MAX_KEY_SIZE * 2,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_BITLOCKER,
|
|
.flow_mode = S_DIN_to_AES,
|
|
.min_hw_rev = CC_HW_REV_712,
|
|
},
|
|
{
|
|
.name = "bitlocker512(aes)",
|
|
.driver_name = "bitlocker-aes-du512-ccree",
|
|
.blocksize = AES_BLOCK_SIZE,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_setkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = AES_MIN_KEY_SIZE * 2,
|
|
.max_keysize = AES_MAX_KEY_SIZE * 2,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_BITLOCKER,
|
|
.flow_mode = S_DIN_to_AES,
|
|
.data_unit = 512,
|
|
.min_hw_rev = CC_HW_REV_712,
|
|
},
|
|
{
|
|
.name = "bitlocker4096(aes)",
|
|
.driver_name = "bitlocker-aes-du4096-ccree",
|
|
.blocksize = AES_BLOCK_SIZE,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_setkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = AES_MIN_KEY_SIZE * 2,
|
|
.max_keysize = AES_MAX_KEY_SIZE * 2,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_BITLOCKER,
|
|
.flow_mode = S_DIN_to_AES,
|
|
.data_unit = 4096,
|
|
.min_hw_rev = CC_HW_REV_712,
|
|
},
|
|
{
|
|
.name = "ecb(aes)",
|
|
.driver_name = "ecb-aes-ccree",
|
|
.blocksize = AES_BLOCK_SIZE,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_setkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = AES_MIN_KEY_SIZE,
|
|
.max_keysize = AES_MAX_KEY_SIZE,
|
|
.ivsize = 0,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_ECB,
|
|
.flow_mode = S_DIN_to_AES,
|
|
.min_hw_rev = CC_HW_REV_630,
|
|
},
|
|
{
|
|
.name = "cbc(aes)",
|
|
.driver_name = "cbc-aes-ccree",
|
|
.blocksize = AES_BLOCK_SIZE,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_setkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = AES_MIN_KEY_SIZE,
|
|
.max_keysize = AES_MAX_KEY_SIZE,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_CBC,
|
|
.flow_mode = S_DIN_to_AES,
|
|
.min_hw_rev = CC_HW_REV_630,
|
|
},
|
|
{
|
|
.name = "ofb(aes)",
|
|
.driver_name = "ofb-aes-ccree",
|
|
.blocksize = AES_BLOCK_SIZE,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_setkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = AES_MIN_KEY_SIZE,
|
|
.max_keysize = AES_MAX_KEY_SIZE,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_OFB,
|
|
.flow_mode = S_DIN_to_AES,
|
|
.min_hw_rev = CC_HW_REV_630,
|
|
},
|
|
{
|
|
.name = "cts(cbc(aes))",
|
|
.driver_name = "cts-cbc-aes-ccree",
|
|
.blocksize = AES_BLOCK_SIZE,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_setkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = AES_MIN_KEY_SIZE,
|
|
.max_keysize = AES_MAX_KEY_SIZE,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_CBC_CTS,
|
|
.flow_mode = S_DIN_to_AES,
|
|
.min_hw_rev = CC_HW_REV_630,
|
|
},
|
|
{
|
|
.name = "ctr(aes)",
|
|
.driver_name = "ctr-aes-ccree",
|
|
.blocksize = 1,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_setkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = AES_MIN_KEY_SIZE,
|
|
.max_keysize = AES_MAX_KEY_SIZE,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_CTR,
|
|
.flow_mode = S_DIN_to_AES,
|
|
.min_hw_rev = CC_HW_REV_630,
|
|
},
|
|
{
|
|
.name = "cbc(des3_ede)",
|
|
.driver_name = "cbc-3des-ccree",
|
|
.blocksize = DES3_EDE_BLOCK_SIZE,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_setkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = DES3_EDE_KEY_SIZE,
|
|
.max_keysize = DES3_EDE_KEY_SIZE,
|
|
.ivsize = DES3_EDE_BLOCK_SIZE,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_CBC,
|
|
.flow_mode = S_DIN_to_DES,
|
|
.min_hw_rev = CC_HW_REV_630,
|
|
},
|
|
{
|
|
.name = "ecb(des3_ede)",
|
|
.driver_name = "ecb-3des-ccree",
|
|
.blocksize = DES3_EDE_BLOCK_SIZE,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_setkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = DES3_EDE_KEY_SIZE,
|
|
.max_keysize = DES3_EDE_KEY_SIZE,
|
|
.ivsize = 0,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_ECB,
|
|
.flow_mode = S_DIN_to_DES,
|
|
.min_hw_rev = CC_HW_REV_630,
|
|
},
|
|
{
|
|
.name = "cbc(des)",
|
|
.driver_name = "cbc-des-ccree",
|
|
.blocksize = DES_BLOCK_SIZE,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_setkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = DES_KEY_SIZE,
|
|
.max_keysize = DES_KEY_SIZE,
|
|
.ivsize = DES_BLOCK_SIZE,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_CBC,
|
|
.flow_mode = S_DIN_to_DES,
|
|
.min_hw_rev = CC_HW_REV_630,
|
|
},
|
|
{
|
|
.name = "ecb(des)",
|
|
.driver_name = "ecb-des-ccree",
|
|
.blocksize = DES_BLOCK_SIZE,
|
|
.template_skcipher = {
|
|
.setkey = cc_cipher_setkey,
|
|
.encrypt = cc_cipher_encrypt,
|
|
.decrypt = cc_cipher_decrypt,
|
|
.min_keysize = DES_KEY_SIZE,
|
|
.max_keysize = DES_KEY_SIZE,
|
|
.ivsize = 0,
|
|
},
|
|
.cipher_mode = DRV_CIPHER_ECB,
|
|
.flow_mode = S_DIN_to_DES,
|
|
.min_hw_rev = CC_HW_REV_630,
|
|
},
|
|
};
|
|
|
|
static struct cc_crypto_alg *cc_create_alg(const struct cc_alg_template *tmpl,
|
|
struct device *dev)
|
|
{
|
|
struct cc_crypto_alg *t_alg;
|
|
struct skcipher_alg *alg;
|
|
|
|
t_alg = kzalloc(sizeof(*t_alg), GFP_KERNEL);
|
|
if (!t_alg)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
alg = &t_alg->skcipher_alg;
|
|
|
|
memcpy(alg, &tmpl->template_skcipher, sizeof(*alg));
|
|
|
|
snprintf(alg->base.cra_name, CRYPTO_MAX_ALG_NAME, "%s", tmpl->name);
|
|
snprintf(alg->base.cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
|
|
tmpl->driver_name);
|
|
alg->base.cra_module = THIS_MODULE;
|
|
alg->base.cra_priority = CC_CRA_PRIO;
|
|
alg->base.cra_blocksize = tmpl->blocksize;
|
|
alg->base.cra_alignmask = 0;
|
|
alg->base.cra_ctxsize = sizeof(struct cc_cipher_ctx);
|
|
|
|
alg->base.cra_init = cc_cipher_init;
|
|
alg->base.cra_exit = cc_cipher_exit;
|
|
alg->base.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_KERN_DRIVER_ONLY;
|
|
|
|
t_alg->cipher_mode = tmpl->cipher_mode;
|
|
t_alg->flow_mode = tmpl->flow_mode;
|
|
t_alg->data_unit = tmpl->data_unit;
|
|
|
|
return t_alg;
|
|
}
|
|
|
|
int cc_cipher_free(struct cc_drvdata *drvdata)
|
|
{
|
|
struct cc_crypto_alg *t_alg, *n;
|
|
struct cc_cipher_handle *cipher_handle = drvdata->cipher_handle;
|
|
|
|
if (cipher_handle) {
|
|
/* Remove registered algs */
|
|
list_for_each_entry_safe(t_alg, n, &cipher_handle->alg_list,
|
|
entry) {
|
|
crypto_unregister_skcipher(&t_alg->skcipher_alg);
|
|
list_del(&t_alg->entry);
|
|
kfree(t_alg);
|
|
}
|
|
kfree(cipher_handle);
|
|
drvdata->cipher_handle = NULL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int cc_cipher_alloc(struct cc_drvdata *drvdata)
|
|
{
|
|
struct cc_cipher_handle *cipher_handle;
|
|
struct cc_crypto_alg *t_alg;
|
|
struct device *dev = drvdata_to_dev(drvdata);
|
|
int rc = -ENOMEM;
|
|
int alg;
|
|
|
|
cipher_handle = kmalloc(sizeof(*cipher_handle), GFP_KERNEL);
|
|
if (!cipher_handle)
|
|
return -ENOMEM;
|
|
|
|
INIT_LIST_HEAD(&cipher_handle->alg_list);
|
|
drvdata->cipher_handle = cipher_handle;
|
|
|
|
/* Linux crypto */
|
|
dev_dbg(dev, "Number of algorithms = %zu\n",
|
|
ARRAY_SIZE(skcipher_algs));
|
|
for (alg = 0; alg < ARRAY_SIZE(skcipher_algs); alg++) {
|
|
if (skcipher_algs[alg].min_hw_rev > drvdata->hw_rev)
|
|
continue;
|
|
|
|
dev_dbg(dev, "creating %s\n", skcipher_algs[alg].driver_name);
|
|
t_alg = cc_create_alg(&skcipher_algs[alg], dev);
|
|
if (IS_ERR(t_alg)) {
|
|
rc = PTR_ERR(t_alg);
|
|
dev_err(dev, "%s alg allocation failed\n",
|
|
skcipher_algs[alg].driver_name);
|
|
goto fail0;
|
|
}
|
|
t_alg->drvdata = drvdata;
|
|
|
|
dev_dbg(dev, "registering %s\n",
|
|
skcipher_algs[alg].driver_name);
|
|
rc = crypto_register_skcipher(&t_alg->skcipher_alg);
|
|
dev_dbg(dev, "%s alg registration rc = %x\n",
|
|
t_alg->skcipher_alg.base.cra_driver_name, rc);
|
|
if (rc) {
|
|
dev_err(dev, "%s alg registration failed\n",
|
|
t_alg->skcipher_alg.base.cra_driver_name);
|
|
kfree(t_alg);
|
|
goto fail0;
|
|
} else {
|
|
list_add_tail(&t_alg->entry,
|
|
&cipher_handle->alg_list);
|
|
dev_dbg(dev, "Registered %s\n",
|
|
t_alg->skcipher_alg.base.cra_driver_name);
|
|
}
|
|
}
|
|
return 0;
|
|
|
|
fail0:
|
|
cc_cipher_free(drvdata);
|
|
return rc;
|
|
}
|