C++ (Cpp) getrandom_wrapper 예제들

예제 #1

파일: entropy_poll.c 프로젝트: Jiaaale/wilddog_client_coap

int platform_entropy_poll( void *data,
                           unsigned char *output, size_t len, size_t *olen )
{
    int ret;
    ((void) data);

    if( ( ret = getrandom_wrapper( output, len, 0 ) ) < 0 )
        return( POLARSSL_ERR_ENTROPY_SOURCE_FAILED );

    *olen = ret;
    return( 0 );
}

예제 #2

파일: entropy_poll.c 프로젝트: santomet/armadill

int mbedtls_platform_entropy_poll( void *data,
                           unsigned char *output, size_t len, size_t *olen )
{
    FILE *file;
    size_t read_len;
    ((void) data);

#if defined(HAVE_GETRANDOM)
    if( has_getrandom == -1 )
        has_getrandom = ( check_version_3_17_plus() == 0 );

    if( has_getrandom )
    {
        int ret;

        if( ( ret = getrandom_wrapper( output, len, 0 ) ) < 0 )
            return( MBEDTLS_ERR_ENTROPY_SOURCE_FAILED );

        *olen = ret;
        return( 0 );
    }
#endif /* HAVE_GETRANDOM */

    *olen = 0;

    file = fopen( "/dev/urandom", "rb" );
    if( file == NULL )
        return( MBEDTLS_ERR_ENTROPY_SOURCE_FAILED );

    read_len = fread( output, 1, len, file );
    if( read_len != len )
    {
        fclose( file );
        return( MBEDTLS_ERR_ENTROPY_SOURCE_FAILED );
    }

    fclose( file );
    *olen = len;

    return( 0 );
}

예제 #3

파일: entropy_poll.c 프로젝트: ARMmbed/mbedtls

int mbedtls_platform_entropy_poll( void *data,
                           unsigned char *output, size_t len, size_t *olen )
{
    FILE *file;
    size_t read_len;
    int ret;
    ((void) data);

#if defined(HAVE_GETRANDOM)
    ret = getrandom_wrapper( output, len, 0 );
    if( ret >= 0 )
    {
        *olen = ret;
        return( 0 );
    }
    else if( errno != ENOSYS )
        return( MBEDTLS_ERR_ENTROPY_SOURCE_FAILED );
    /* Fall through if the system call isn't known. */
#else
    ((void) ret);
#endif /* HAVE_GETRANDOM */

    *olen = 0;

    file = fopen( "/dev/urandom", "rb" );
    if( file == NULL )
        return( MBEDTLS_ERR_ENTROPY_SOURCE_FAILED );

    read_len = fread( output, 1, len, file );
    if( read_len != len )
    {
        fclose( file );
        return( MBEDTLS_ERR_ENTROPY_SOURCE_FAILED );
    }

    fclose( file );
    *olen = len;

    return( 0 );
}