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nRF_Random.h
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nRF_Random.h
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// This file's part of the nRF52840 BSP
#include "crys_rnd.h"
class nRFCrypto_Random {
public:
nRFCrypto_Random(void);
bool begin(void);
void end(void);
CRYS_RND_State_t* getContext(void);
bool addAdditionalInput(uint8_t* input, uint16_t size);
bool reseed(void);
bool generate(uint8_t* buf, uint16_t count);
bool generateInRange(uint8_t* buf, uint32_t bitsize, uint8_t* max = NULL);
// enterKAtMode() DisableKatMoe()
private:
CRYS_RND_State_t _state;
bool _begun;
};
/*
The MIT License (MIT)
Copyright (c) 2020 Ha Thach (tinyusb.org) for Adafruit Industries
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
//------------- IMPLEMENTATION -------------//
nRFCrypto_Random::nRFCrypto_Random(void) {
_begun = false;
}
bool nRFCrypto_Random::begin(void) {
// skip if already called begin before
if (_begun) return true;
_begun = true;
CRYS_RND_WorkBuff_t* workbuf = (CRYS_RND_WorkBuff_t*) malloc(sizeof(CRYS_RND_WorkBuff_t));
//VERIFY(workbuf);
uint32_t err = CRYS_RndInit(&_state, workbuf);
free(workbuf);
return err;
}
void nRFCrypto_Random::end(void) {
// skipped if not begin-ed
if (!_begun) return;
_begun = false;
uint32_t err = CRYS_RND_UnInstantiation(&_state);
}
CRYS_RND_State_t* nRFCrypto_Random::getContext(void) {
return &_state;
}
bool nRFCrypto_Random::addAdditionalInput(uint8_t* input, uint16_t size) {
return (CRYS_RND_AddAdditionalInput(&_state, input, size));
}
bool nRFCrypto_Random::reseed(void) {
CRYS_RND_WorkBuff_t* workbuf = (CRYS_RND_WorkBuff_t*) malloc(sizeof(CRYS_RND_WorkBuff_t));
// VERIFY(workbuf);
uint32_t err = CRYS_RND_Reseeding(&_state, workbuf);
//rtos_free(workbuf);
free(workbuf);
// VERIFY_ERROR(err, false);
return true;
}
bool nRFCrypto_Random::generate(uint8_t* buf, uint16_t bufsize) {
return CRYS_RND_GenerateVector(&_state, bufsize, buf);
}
bool nRFCrypto_Random::generateInRange(uint8_t* buf, uint32_t bitsize, uint8_t* max) {
return CRYS_RND_GenerateVectorInRange(&_state, CRYS_RND_GenerateVector, bitsize, max, buf);
}