CC32xxSha.hxx

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#ifndef _CC32xxSHA_HXX_
#define _CC32xxSHA_HXX_
 
#define USE_CC3220_ROM_DRV_API
 
#include "driverlib/prcm.h"
#include "driverlib/rom.h"
#include "driverlib/rom_map.h"
#include "driverlib/shamd5.h"
#include "inc/hw_dthe.h"
#include "inc/hw_memmap.h"
#include "inc/hw_types.h"
 
#include <string>
 
#include "utils/SyncStream.hxx"
 
class SHAHelper
{
public:
    static std::string sha256(const void *data, size_t len)
    {
        MAP_SHAMD5ConfigSet(SHAMD5_BASE, SHAMD5_ALGO_SHA256, 1, 1, 0, 0);
        std::string ret(32, 0);
        // Note: this should really be SHAMD5DataProcess, but that has an
        // assert on len%64 == 0 for no reason. The below function does the
        // same thing but without the extra assert.
        ROM_SHAMD5DataProcess(
            SHAMD5_BASE, (uint8_t *)data, len, (uint8_t *)&ret[0]);
        return ret;
    }
 
private:
    SHAHelper();
};
 
#endif // _CC32xxSHA_HXX_