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/* Copyright 2018 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/* Provides the minimal declarations needed by pinweaver to build on
* CHIP_HOST. While it might be preferable to simply use the original dcrypto.h,
* That would require incorporating additional headers / dependencies such as
* cryptoc.
*/
#ifndef __CROS_EC_DCRYPTO_HOST_H
#define __CROS_EC_DCRYPTO_HOST_H
#include <stdint.h>
#include <string.h>
/* Allow tests to return a faked result for the purpose of testing. If
* this is not set, a combination of cryptoc and openssl are used for the
* dcrypto implementation.
*/
#ifndef CONFIG_DCRYPTO_MOCK
/* If not using the mock struct definitions, use the ones from Cr50. */
#include "chip/g/dcrypto/dcrypto.h"
#else /* defined(CONFIG_DCRYPTO_MOCK) */
#include <sha256.h>
#define HASH_CTX sha256_ctx
/* Used as a replacement for declarations in cryptoc that are used by Cr50, but
* add unnecessary complexity to the test code.
*/
struct dcrypto_mock_ctx_t {
struct HASH_CTX hash;
};
#define LITE_HMAC_CTX struct dcrypto_mock_ctx_t
#define LITE_SHA256_CTX struct HASH_CTX
void HASH_update(struct HASH_CTX *ctx, const void *data, size_t len);
uint8_t *HASH_final(struct HASH_CTX *ctx);
#define AES256_BLOCK_CIPHER_KEY_SIZE 32
#define SHA256_DIGEST_SIZE 32
enum dcrypto_appid {
RESERVED = 0,
NVMEM = 1,
U2F_ATTEST = 2,
U2F_ORIGIN = 3,
U2F_WRAP = 4,
PERSO_AUTH = 5,
PINWEAVER = 6,
/* This enum value should not exceed 7. */
};
void DCRYPTO_SHA256_init(LITE_SHA256_CTX *ctx, uint32_t sw_required);
void DCRYPTO_HMAC_SHA256_init(LITE_HMAC_CTX *ctx, const void *key,
unsigned int len);
const uint8_t *DCRYPTO_HMAC_final(LITE_HMAC_CTX *ctx);
int DCRYPTO_aes_ctr(uint8_t *out, const uint8_t *key, uint32_t key_bits,
const uint8_t *iv, const uint8_t *in, size_t in_len);
struct APPKEY_CTX {};
int DCRYPTO_appkey_init(enum dcrypto_appid appid, struct APPKEY_CTX *ctx);
void DCRYPTO_appkey_finish(struct APPKEY_CTX *ctx);
int DCRYPTO_appkey_derive(enum dcrypto_appid appid, const uint32_t input[8],
uint32_t output[8]);
#endif /* CONFIG_DCRYPTO_MOCK */
#endif /* __CROS_EC_HOST_DCRYPTO_H */
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