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Improve PKC unit test coverage (#6485) 

* Cleanup PKC unit test a bit

* Add unit test coverage for encryptCurve25519

---------

Co-authored-by: Ben Meadors <benmmeadors@gmail.com>
pull/6490/head
Jason B. Cox 2025-04-03 12:17:36 -07:00 zatwierdzone przez GitHub
rodzic 1017f6af35
commit 0665802823
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27
test/test_crypto/test_main.cpp
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@ -110,7 +110,7 @@ void test_DH25519(void)
TEST_ASSERT_EQUAL_MEMORY(expected_shared, crypto->shared_key, 32);
}
void test_PKC_Decrypt(void)
void test_PKC(void)
{
uint8_t private_key[32];
meshtastic_UserLite_public_key_t public_key;
@ -120,7 +120,8 @@ void test_PKC_Decrypt(void)
uint8_t decrypted[128] __attribute__((__aligned__));
uint8_t expected_nonce[16];
uint32_t fromNode;
uint32_t fromNode = 0x0929;
uint64_t packetNum = 0x13b2d662;
HexToBytes(public_key.bytes, "db18fc50eea47f00251cb784819a3cf5fc361882597f589f0d7ff820e8064457");
public_key.size = 32;
HexToBytes(private_key, "a00330633e63522f8a4d81ec6d9d1e6617f6c8ffd3a4c698229537d44e522277");
@ -128,14 +129,26 @@ void test_PKC_Decrypt(void)
HexToBytes(expected_decrypted, "08011204746573744800");
HexToBytes(radioBytes, "8c646d7a2909000062d6b2136b00000040df24abfcc30a17a3d9046726099e796a1c036a792b");
HexToBytes(expected_nonce, "62d6b213036a792b2909000000");
fromNode = 0x0929;
crypto->setDHPrivateKey(private_key);
// TEST_ASSERT(crypto->setDHPublicKey(public_key));
// crypto->hash(crypto->shared_key, 32);
crypto->decryptCurve25519(fromNode, public_key, 0x13b2d662, 22, radioBytes + 16, decrypted);
TEST_ASSERT(crypto->decryptCurve25519(fromNode, public_key, packetNum, 22, radioBytes + 16, decrypted));
TEST_ASSERT_EQUAL_MEMORY(expected_shared, crypto->shared_key, 8);
TEST_ASSERT_EQUAL_MEMORY(expected_nonce, crypto->nonce, 13);
TEST_ASSERT_EQUAL_MEMORY(expected_decrypted, decrypted, 10);
uint32_t toNode = 0; // Only impacts logging
uint8_t encrypted[128] __attribute__((__aligned__));
TEST_ASSERT(crypto->encryptCurve25519(toNode, fromNode, public_key, packetNum, 10, decrypted, encrypted));
TEST_ASSERT_EQUAL_MEMORY(expected_shared, crypto->shared_key, 8);
// The extraNonce is random, so skip checking the nonce and encrypted output here
// Copy the nonce to check it after encryption
memcpy(expected_nonce, crypto->nonce, 16);
// Decrypt the re-encrypted bytes and check they are the same as what we expect
TEST_ASSERT(crypto->decryptCurve25519(fromNode, public_key, packetNum, 22, encrypted, decrypted));
TEST_ASSERT_EQUAL_MEMORY(expected_shared, crypto->shared_key, 8);
TEST_ASSERT_EQUAL_MEMORY(expected_nonce, crypto->nonce, 13);
TEST_ASSERT_EQUAL_MEMORY(expected_decrypted, decrypted, 10);
}
@ -178,7 +191,7 @@ void setup()
RUN_TEST(test_ECB_AES256);
RUN_TEST(test_DH25519);
RUN_TEST(test_AES_CTR);
RUN_TEST(test_PKC_Decrypt);
RUN_TEST(test_PKC);
exit(UNITY_END()); // stop unit testing
}