mbedtls ecdsa使用样例使用样例
该code是基于最新的mbedtls所列出的，样例的代码路径如下所示
mbedtls/crypto/programs/pkey/ecdsa.c
具体的code如下所示
#if !defined(MBEDTLS_CONFIG_FILE)
#include "mbedtls/config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif
#if defined(MBEDTLS_PLATFORM_C)
#include "mbedtls/platform.h"
#else
#include
#include
#define mbedtls_printf printf
#define mbedtls_exit exit
#define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
#define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
#endif /* MBEDTLS_PLATFORM_C */
#if defined(MBEDTLS_ECDSA_C) && \
defined(MBEDTLS_ENTROPY_C) && defined(MBEDTLS_CTR_DRBG_C)
#include "mbedtls/entropy.h"
#include "mbedtls/ctr_drbg.h"
#include "mbedtls/ecdsa.h"
#include "mbedtls/sha256.h"
#include
#endif
/*
* Uncomment to show key and signature details
*/
#define VERBOSE
/*
* Uncomment to force use of a specific curve
*/
#define ECPARAMS MBEDTLS_ECP_DP_SECP192R1
#if !defined(ECPARAMS)
#define ECPARAMS mbedtls_ecp_curve_list()->grp_id
#endif
#if !defined(MBEDTLS_ECDSA_C) || !defined(MBEDTLS_SHA256_C) || \
!defined(MBEDTLS_ENTROPY_C) || !defined(MBEDTLS_CTR_DRBG_C)
int main( void )
{
mbedtls_printf("MBEDTLS_ECDSA_C and/or MBEDTLS_SHA256_C and/or "
"MBEDTLS_ENTROPY_C and/or MBEDTLS_CTR_DRBG_C not defined");
return( 0 );
}
#else
#if defined(VERBOSE)
static void dump_buf( const char *title, unsigned char *buf, size_t len )
{
size_t i;
mbedtls_printf( "%s", title );
for( i = 0; i grp, &key->Q,
MBEDTLS_ECP_PF_UNCOMPRESSED, &len, buf, sizeof buf ) != 0 )
{
mbedtls_printf("internal error");
return;
}
dump_buf( title, buf, len );
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