forked from Minki/linux
a794d8d876
Enable CryptoCell support for hardware keys. Hardware keys are regular AES keys loaded into CryptoCell internal memory via firmware, often from secure boot ROM or hardware fuses at boot time. As such, they can be used for enc/dec purposes like any other key but cannot (read: extremely hard to) be extracted since since they are not available anywhere in RAM during runtime. The mechanism has some similarities to s390 secure keys although the keys are not wrapped or sealed, but simply loaded offline. The interface was therefore modeled based on the s390 secure keys support. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
42 lines
852 B
C
42 lines
852 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/* Copyright (C) 2012-2018 ARM Limited or its affiliates. */
|
|
|
|
/* \file cc_cipher.h
|
|
* ARM CryptoCell Cipher Crypto API
|
|
*/
|
|
|
|
#ifndef __CC_CIPHER_H__
|
|
#define __CC_CIPHER_H__
|
|
|
|
#include <linux/kernel.h>
|
|
#include <crypto/algapi.h>
|
|
#include "cc_driver.h"
|
|
#include "cc_buffer_mgr.h"
|
|
|
|
struct cipher_req_ctx {
|
|
struct async_gen_req_ctx gen_ctx;
|
|
enum cc_req_dma_buf_type dma_buf_type;
|
|
u32 in_nents;
|
|
u32 in_mlli_nents;
|
|
u32 out_nents;
|
|
u32 out_mlli_nents;
|
|
u8 *backup_info; /*store iv for generated IV flow*/
|
|
u8 *iv;
|
|
bool is_giv;
|
|
struct mlli_params mlli_params;
|
|
};
|
|
|
|
int cc_cipher_alloc(struct cc_drvdata *drvdata);
|
|
|
|
int cc_cipher_free(struct cc_drvdata *drvdata);
|
|
|
|
struct cc_hkey_info {
|
|
u16 keylen;
|
|
u8 hw_key1;
|
|
u8 hw_key2;
|
|
} __packed;
|
|
|
|
#define CC_HW_KEY_SIZE sizeof(struct cc_hkey_info)
|
|
|
|
#endif /*__CC_CIPHER_H__*/
|