mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 11:37:35 +00:00
103 lines
4.2 KiB
C
103 lines
4.2 KiB
C
#ifndef COSMOPOLITAN_THIRD_PARTY_MBEDTLS_ENTROPY_H_
|
|
#define COSMOPOLITAN_THIRD_PARTY_MBEDTLS_ENTROPY_H_
|
|
#include "third_party/mbedtls/config.h"
|
|
#include "third_party/mbedtls/sha256.h"
|
|
#include "third_party/mbedtls/sha512.h"
|
|
COSMOPOLITAN_C_START_
|
|
/* clang-format off */
|
|
|
|
#if defined(MBEDTLS_SHA512_C) && !defined(MBEDTLS_ENTROPY_FORCE_SHA256)
|
|
#define MBEDTLS_ENTROPY_SHA512_ACCUMULATOR
|
|
#else
|
|
#if defined(MBEDTLS_SHA256_C)
|
|
#define MBEDTLS_ENTROPY_SHA256_ACCUMULATOR
|
|
#endif
|
|
#endif
|
|
|
|
#define MBEDTLS_ERR_ENTROPY_SOURCE_FAILED -0x003C /*< Critical entropy source failure. */
|
|
#define MBEDTLS_ERR_ENTROPY_MAX_SOURCES -0x003E /*< No more sources can be added. */
|
|
#define MBEDTLS_ERR_ENTROPY_NO_SOURCES_DEFINED -0x0040 /*< No sources have been added to poll. */
|
|
#define MBEDTLS_ERR_ENTROPY_NO_STRONG_SOURCE -0x003D /*< No strong sources have been added to poll. */
|
|
#define MBEDTLS_ERR_ENTROPY_FILE_IO_ERROR -0x003F /*< Read/write error in file. */
|
|
|
|
#if !defined(MBEDTLS_ENTROPY_MAX_SOURCES)
|
|
#define MBEDTLS_ENTROPY_MAX_SOURCES 20 /*< Maximum number of sources supported */
|
|
#endif
|
|
|
|
#if !defined(MBEDTLS_ENTROPY_MAX_GATHER)
|
|
#define MBEDTLS_ENTROPY_MAX_GATHER 128 /*< Maximum amount requested from entropy sources */
|
|
#endif
|
|
|
|
#if defined(MBEDTLS_ENTROPY_SHA512_ACCUMULATOR)
|
|
#define MBEDTLS_ENTROPY_BLOCK_SIZE 64 /*< Block size of entropy accumulator (SHA-512) */
|
|
#else
|
|
#define MBEDTLS_ENTROPY_BLOCK_SIZE 32 /*< Block size of entropy accumulator (SHA-256) */
|
|
#endif
|
|
|
|
#define MBEDTLS_ENTROPY_MAX_SEED_SIZE 1024 /*< Maximum size of seed we read from seed file */
|
|
#define MBEDTLS_ENTROPY_SOURCE_MANUAL MBEDTLS_ENTROPY_MAX_SOURCES
|
|
|
|
#define MBEDTLS_ENTROPY_SOURCE_STRONG 1 /*< Entropy source is strong */
|
|
#define MBEDTLS_ENTROPY_SOURCE_WEAK 0 /*< Entropy source is weak */
|
|
|
|
/**
|
|
* \brief Entropy poll callback pointer
|
|
*
|
|
* \param data Callback-specific data pointer
|
|
* \param output Data to fill
|
|
* \param len Maximum size to provide
|
|
* \param olen The actual amount of bytes put into the buffer (Can be 0)
|
|
*
|
|
* \return 0 if no critical failures occurred,
|
|
* MBEDTLS_ERR_ENTROPY_SOURCE_FAILED otherwise
|
|
*/
|
|
typedef int (*mbedtls_entropy_f_source_ptr)(void *data, unsigned char *output, size_t len, size_t *olen);
|
|
|
|
/**
|
|
* \brief Entropy source state
|
|
*/
|
|
typedef struct mbedtls_entropy_source_state
|
|
{
|
|
mbedtls_entropy_f_source_ptr f_source; /*< The entropy source callback */
|
|
void * p_source; /*< The callback data pointer */
|
|
size_t size; /*< Amount received in bytes */
|
|
size_t threshold; /*< Minimum bytes required before release */
|
|
int strong; /*< Is the source strong? */
|
|
}
|
|
mbedtls_entropy_source_state;
|
|
|
|
/**
|
|
* \brief Entropy context structure
|
|
*/
|
|
typedef struct mbedtls_entropy_context
|
|
{
|
|
int accumulator_started; /* 0 after init.
|
|
* 1 after the first update.
|
|
* -1 after free. */
|
|
#if defined(MBEDTLS_ENTROPY_SHA512_ACCUMULATOR)
|
|
mbedtls_sha512_context accumulator;
|
|
#else
|
|
mbedtls_sha256_context accumulator;
|
|
#endif
|
|
int source_count; /* Number of entries used in source. */
|
|
mbedtls_entropy_source_state source[MBEDTLS_ENTROPY_MAX_SOURCES];
|
|
#if defined(MBEDTLS_ENTROPY_NV_SEED)
|
|
int initial_entropy_run;
|
|
#endif
|
|
}
|
|
mbedtls_entropy_context;
|
|
|
|
void mbedtls_entropy_init( mbedtls_entropy_context * );
|
|
void mbedtls_entropy_free( mbedtls_entropy_context * );
|
|
int mbedtls_entropy_add_source( mbedtls_entropy_context *, mbedtls_entropy_f_source_ptr, void *, size_t, int );
|
|
int mbedtls_entropy_gather( mbedtls_entropy_context * );
|
|
int mbedtls_entropy_func( void *, unsigned char *, size_t );
|
|
int mbedtls_entropy_update_manual( mbedtls_entropy_context *, const unsigned char *, size_t );
|
|
int mbedtls_entropy_update_nv_seed( mbedtls_entropy_context * );
|
|
int mbedtls_entropy_write_seed_file( mbedtls_entropy_context *, const char * );
|
|
int mbedtls_entropy_update_seed_file( mbedtls_entropy_context *, const char * );
|
|
int mbedtls_entropy_self_test( int );
|
|
int mbedtls_entropy_source_self_test( int );
|
|
|
|
COSMOPOLITAN_C_END_
|
|
#endif /* COSMOPOLITAN_THIRD_PARTY_MBEDTLS_ENTROPY_H_ */
|