Vehicle-cpp/ZJ_PRO/EgoSystem/hmacsha256.h

#ifndef _HMAC_SHA_256_H_
#define _HMAC_SHA_256_H_

#define SHA256_BLOCKLEN  64ul //size of message block buffer
#define SHA256_DIGESTLEN 32ul //size of digest in uint8_t
#define SHA256_DIGESTINT 8ul  //size of digest in uint32_t


#include <stdint.h>

#if defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
#elif defined(_MSC_VER)
#pragma warning(disable : 4996)
#endif

typedef struct sha256_ctx_t
{
	uint64_t len;                 // processed message length
	uint32_t h[SHA256_DIGESTINT]; // hash state
	uint8_t buf[SHA256_BLOCKLEN]; // message block buffer
} SHA256_CTX;

void sha256_init(SHA256_CTX* ctx);
void sha256_update(SHA256_CTX* ctx, const uint8_t* m, uint32_t mlen);
// resets state: calls sha256_init
void sha256_final(SHA256_CTX* ctx, uint8_t* md);

typedef struct hmac_sha256_ctx_t
{
	uint8_t buf[SHA256_BLOCKLEN]; // key block buffer, not needed after init
	uint32_t h_inner[SHA256_DIGESTINT];
	uint32_t h_outer[SHA256_DIGESTINT];
	SHA256_CTX sha;
} HMAC_SHA256_CTX;

void hmac_sha256_init(HMAC_SHA256_CTX* hmac, const uint8_t* key, uint32_t keylen);
void hmac_sha256_update(HMAC_SHA256_CTX* hmac, const uint8_t* m, uint32_t mlen);
void hmac_sha256_final(HMAC_SHA256_CTX* hmac, uint8_t* md);

void pbkdf2_sha256(HMAC_SHA256_CTX* ctx, const uint8_t* key, uint32_t keylen, const uint8_t* salt, uint32_t saltlen, uint32_t rounds, uint8_t* dk, uint32_t dklen);

#endif // _HMAC_SHA_256_H_