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use nRF Hardware Cryptography. Removes the need for the sdk-nrfxlib submodule

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This commit is contained in:
Thomas Göttgens
2022-04-25 11:01:54 +02:00
parent cbf238652e
commit 770f17f382
4 changed files with 20 additions and 63 deletions
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75
src/nrf52/NRF52CryptoEngine.cpp
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@@ -1,7 +1,6 @@
#include "configuration.h"
#include "CryptoEngine.h"
#include "ocrypto_aes_ctr.h"
// #include <Adafruit_nRFCrypto.h>
#include <Adafruit_nRFCrypto.h>
class NRF52CryptoEngine : public CryptoEngine
{
@@ -20,12 +19,16 @@ class NRF52CryptoEngine : public CryptoEngine
// DEBUG_MSG("NRF52 encrypt!\n");
if (key.length > 0) {
ocrypto_aes_ctr_ctx ctx;
nRFCrypto.begin();
nRFCrypto_AES ctx;
uint8_t myLen = ctx.blockLen(numBytes);
char encBuf[myLen] = {0};
memcpy(encBuf, bytes, numBytes);
initNonce(fromNode, packetId);
ocrypto_aes_ctr_init(&ctx, key.bytes, key.length, nonce);
ocrypto_aes_ctr_encrypt(&ctx, bytes, bytes, numBytes);
ctx.begin();
ctx.Process(encBuf, numBytes, nonce, key.bytes, key.length, (char*)bytes, ctx.encryptFlag, ctx.ctrMode);
ctx.end();
nRFCrypto.end();
}
}
@@ -34,60 +37,20 @@ class NRF52CryptoEngine : public CryptoEngine
// DEBUG_MSG("NRF52 decrypt!\n");
if (key.length > 0) {
ocrypto_aes_ctr_ctx ctx;
nRFCrypto.begin();
nRFCrypto_AES ctx;
uint8_t myLen = ctx.blockLen(numBytes);
char decBuf[myLen] = {0};
memcpy(decBuf, bytes, numBytes);
initNonce(fromNode, packetId);
ocrypto_aes_ctr_init(&ctx, key.bytes, key.length, nonce);
ocrypto_aes_ctr_decrypt(&ctx, bytes, bytes, numBytes);
ctx.begin();
ctx.Process(decBuf, numBytes, nonce, key.bytes, key.length, (char*)bytes, ctx.decryptFlag, ctx.ctrMode);
ctx.end();
nRFCrypto.end();
}
}
private:
};
// /**
// * Encrypt a packet
// *
// * @param bytes is updated in place
// */
// virtual void encrypt(uint32_t fromNode, uint64_t packetId, size_t numBytes, uint8_t *bytes) override
// {
// DEBUG_MSG("NRF52 encrypt!\n");
// if (key.length > 0) {
// nRFCrypto_AES ctx;
// uint8_t myLen = ctx.blockLen(numBytes);
// char encBuf[myLen] = {0};
// memcpy(encBuf, bytes, numBytes);
// initNonce(fromNode, packetId);
// nRFCrypto.begin();
// ctx.begin();
// ctx.Process(encBuf, numBytes, nonce, key.bytes, key.length, (char*)bytes, ctx.encryptFlag, ctx.ctrMode);
// ctx.end();
// nRFCrypto.end();
// }
// }
// virtual void decrypt(uint32_t fromNode, uint64_t packetId, size_t numBytes, uint8_t *bytes) override
// {
// DEBUG_MSG("NRF52 decrypt!\n");
// if (key.length > 0) {
// nRFCrypto_AES ctx;
// uint8_t myLen = ctx.blockLen(numBytes);
// char decBuf[myLen] = {0};
// memcpy(decBuf, bytes, numBytes);
// initNonce(fromNode, packetId);
// nRFCrypto.begin();
// ctx.begin();
// ctx.Process(decBuf, numBytes, nonce, key.bytes, key.length, (char*)bytes, ctx.decryptFlag, ctx.ctrMode);
// ctx.end();
// nRFCrypto.end();
// }
// }
// private:
// };
CryptoEngine *crypto = new NRF52CryptoEngine();