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https://github.com/meshtastic/firmware.git
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4b0bbb8af1
* Make STM compile again and update toolchain. The binary is too big for the flash. WIP * Making progress with OSFS, still WIP * more progress, still too big. Adding RAK3172 to the equasion * Make STM compile again and update toolchain. The binary is too big for the flash. WIP * Making progress with OSFS, still WIP * more progress, still too big. Adding RAK3172 to the equasion * still too big * minimize build * trunk fmt * fix a couple of symbol clashes * trunk fmt * down to 101% with a release vs. debug build and omitting the flash strings * fix compilation * fix compilation once more * update protobufs linkage * - Toolchain updated - Fixed macro error * silence compiler warning note: do something about this assert... * new toolkit and fix Power.cpp * STM32WL make it fit (#4330) * Add option to exclude I2C parts The I2C hals and related code uses a significant amount of flash space and aren't required for a basic node. * Add option to disable Admin and NodeInfo modules Disabled by default in minimal build. This saves a significant amount of flash * Disable unused hals These use up significant flash * Add float support for printf for debugging Makes serial look nice for debugging * This breaks my build for some reason * These build flags can save a bit of flash * Don't disable NodeInfo and Admin modules in minimal build They fit in flash * Don't include printf float support by default Only useful for debugging --------- Co-authored-by: Adam Lawson <dev@goshawk22.uk> --------- Co-authored-by: Ben Meadors <benmmeadors@gmail.com> Co-authored-by: Adam Lawson <dev@goshawk22.uk>
68 lines
1.8 KiB
C++
68 lines
1.8 KiB
C++
#undef RNG
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#include "AES.h"
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#include "CTR.h"
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#include "CryptoEngine.h"
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#include "configuration.h"
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class STM32WLCryptoEngine : public CryptoEngine
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{
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CTRCommon *ctr = NULL;
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public:
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STM32WLCryptoEngine() {}
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~STM32WLCryptoEngine() {}
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virtual void setKey(const CryptoKey &k) override
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{
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CryptoEngine::setKey(k);
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LOG_DEBUG("Installing AES%d key!\n", key.length * 8);
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if (ctr) {
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delete ctr;
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ctr = NULL;
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}
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if (key.length != 0) {
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if (key.length == 16)
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ctr = new CTR<AES128>();
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else
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ctr = new CTR<AES256>();
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ctr->setKey(key.bytes, key.length);
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}
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}
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/**
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* Encrypt a packet
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*
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* @param bytes is updated in place
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*/
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virtual void encrypt(uint32_t fromNode, uint64_t packetId, size_t numBytes, uint8_t *bytes) override
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{
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if (key.length > 0) {
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initNonce(fromNode, packetId);
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if (numBytes <= MAX_BLOCKSIZE) {
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static uint8_t scratch[MAX_BLOCKSIZE];
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memcpy(scratch, bytes, numBytes);
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memset(scratch + numBytes, 0,
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sizeof(scratch) - numBytes); // Fill rest of buffer with zero (in case cypher looks at it)
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ctr->setIV(nonce, sizeof(nonce));
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ctr->setCounterSize(4);
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ctr->encrypt(bytes, scratch, numBytes);
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} else {
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LOG_ERROR("Packet too large for crypto engine: %d. noop encryption!\n", numBytes);
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}
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}
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}
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virtual void decrypt(uint32_t fromNode, uint64_t packetId, size_t numBytes, uint8_t *bytes) override
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{
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// For CTR, the implementation is the same
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encrypt(fromNode, packetId, numBytes, bytes);
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}
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private:
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};
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CryptoEngine *crypto = new STM32WLCryptoEngine();
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