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#ifndef _SHA256_H
#define _SHA256_H
#include <linux/kconfig.h>
#include <linux/types.h>
#if CONFIG_IS_ENABLED(MBEDTLS_LIB_CRYPTO)
/*
* FIXME:
* MbedTLS define the members of "mbedtls_sha256_context" as private,
* but "state" needs to be access by arch/arm/cpu/armv8/sha256_ce_glue.
* MBEDTLS_ALLOW_PRIVATE_ACCESS needs to be enabled to allow the external
* access.
* Directly including <external/mbedtls/library/common.h> is not allowed,
* since this will include <malloc.h> and break the sandbox test.
*/
#define MBEDTLS_ALLOW_PRIVATE_ACCESS
#include <mbedtls/sha256.h>
#endif
#define SHA224_SUM_LEN 28
#define SHA256_SUM_LEN 32
#define SHA256_DER_LEN 19
extern const uint8_t sha256_der_prefix[];
/* Reset watchdog each time we process this many bytes */
#define CHUNKSZ_SHA256 (64 * 1024)
#if CONFIG_IS_ENABLED(MBEDTLS_LIB_CRYPTO)
typedef mbedtls_sha256_context sha256_context;
#else
typedef struct {
uint32_t total[2];
uint32_t state[8];
uint8_t buffer[64];
} sha256_context;
#endif
void sha256_starts(sha256_context * ctx);
void sha256_update(sha256_context *ctx, const uint8_t *input, uint32_t length);
void sha256_finish(sha256_context * ctx, uint8_t digest[SHA256_SUM_LEN]);
void sha256_csum_wd(const unsigned char *input, unsigned int ilen,
unsigned char *output, unsigned int chunk_sz);
#endif /* _SHA256_H */
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