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Keep the api and ota noise keys in flash behind one context

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This commit is contained in:
J. Nick Koston
2026-09-05 11:45:59 +02:00
parent 5c047ba485
commit fad229a7cb
16 changed files with 95 additions and 71 deletions
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tests/components/noise/test_noise_handshake.cpp
+13 -5
View File
@@ -68,6 +68,14 @@ class Initiator {
static const uint8_t PROLOGUE[] = {'t', 'e', 's', 't', 'p', 'r', 'o', 'l', 'o', 'g', 'u', 'e'};
// The context only points at the key and init() copies it before returning,
// so a temporary context over a temporary key is safe within one call
static NoiseContext ctx_for(const psk_t &psk) {
NoiseContext ctx;
ctx.set_psk(psk.data());
return ctx;
}
static psk_t make_psk(uint8_t seed) {
psk_t psk;
for (size_t i = 0; i < psk.size(); i++) {
@@ -102,7 +110,7 @@ TEST(NoiseResponderHandshakeTest, MessageMethodsErrorBeforeInit) {
TEST(NoiseResponderHandshakeTest, FullHandshakeAndTransportRoundTrip) {
const psk_t psk = make_psk(7);
NoiseResponderHandshake responder;
ASSERT_EQ(responder.init(psk, PROLOGUE, sizeof(PROLOGUE)), 0);
ASSERT_EQ(responder.init(ctx_for(psk), PROLOGUE, sizeof(PROLOGUE)), 0);
EXPECT_EQ(responder.action(), Action::ACTION_READ);
Initiator initiator(psk, PROLOGUE, sizeof(PROLOGUE));
@@ -155,8 +163,8 @@ TEST(NoiseResponderHandshakeTest, ReInitRestartsHandshake) {
// proves the restart took effect; the old state surviving would fail the
// MAC here.
NoiseResponderHandshake responder;
ASSERT_EQ(responder.init(make_psk(7), PROLOGUE, sizeof(PROLOGUE)), 0);
ASSERT_EQ(responder.init(make_psk(9), PROLOGUE, sizeof(PROLOGUE)), 0);
ASSERT_EQ(responder.init(ctx_for(make_psk(7)), PROLOGUE, sizeof(PROLOGUE)), 0);
ASSERT_EQ(responder.init(ctx_for(make_psk(9)), PROLOGUE, sizeof(PROLOGUE)), 0);
EXPECT_EQ(responder.action(), Action::ACTION_READ);
Initiator initiator(make_psk(9), PROLOGUE, sizeof(PROLOGUE));
@@ -168,7 +176,7 @@ TEST(NoiseResponderHandshakeTest, ReInitRestartsHandshake) {
TEST(NoiseResponderHandshakeTest, WrongPskFailsWithMacFailure) {
NoiseResponderHandshake responder;
ASSERT_EQ(responder.init(make_psk(7), PROLOGUE, sizeof(PROLOGUE)), 0);
ASSERT_EQ(responder.init(ctx_for(make_psk(7)), PROLOGUE, sizeof(PROLOGUE)), 0);
Initiator initiator(make_psk(200), PROLOGUE, sizeof(PROLOGUE));
uint8_t msg[MAX_HANDSHAKE_SIZE];
@@ -185,7 +193,7 @@ TEST(NoiseResponderHandshakeTest, MismatchedPrologueFailsWithMacFailure) {
// tampered preamble must fail even with the right key.
const psk_t psk = make_psk(7);
NoiseResponderHandshake responder;
ASSERT_EQ(responder.init(psk, PROLOGUE, sizeof(PROLOGUE)), 0);
ASSERT_EQ(responder.init(ctx_for(psk), PROLOGUE, sizeof(PROLOGUE)), 0);
static const uint8_t TAMPERED[] = {'x'};
Initiator initiator(psk, TAMPERED, sizeof(TAMPERED));
tests/components/noise/test_noise_primitives.cpp
+7 -3
View File
@@ -17,12 +17,16 @@ TEST(NoiseContextTest, AllZerosPskIsReserved) {
EXPECT_FALSE(NoiseContext::is_all_zeros(psk));
NoiseContext ctx;
psk_t loaded;
EXPECT_FALSE(ctx.has_psk());
ctx.set_psk(zeros);
ctx.load_psk(loaded);
EXPECT_EQ(loaded, zeros);
ctx.set_psk(zeros.data());
EXPECT_FALSE(ctx.has_psk());
ctx.set_psk(psk);
ctx.set_psk(psk.data());
EXPECT_TRUE(ctx.has_psk());
EXPECT_EQ(ctx.get_psk(), psk);
ctx.load_psk(loaded);
EXPECT_EQ(loaded, psk);
}
TEST(WireFormatTest, FrameHeaderIsIndicatorPlusBigEndianLength) {