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device: uniformly check ECDH output for zeros

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For some reason, this was omitted for response messages.

Reported-by: z <dzm@unexpl0.red>
Fixes: 8c34c4c ("First set of code review patches")
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
This commit is contained in:
Jason A. Donenfeld 2023-02-16 15:51:30 +01:00
parent 1e2c3e5a3c
commit c7b76d3d9e
5 changed files with 45 additions and 38 deletions
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6
device/noise_test.go
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@ -24,10 +24,10 @@ func TestCurveWrappers(t *testing.T) {
pk1 := sk1.publicKey()
pk2 := sk2.publicKey()
ss1 := sk1.sharedSecret(pk2)
ss2 := sk2.sharedSecret(pk1)
ss1, err1 := sk1.sharedSecret(pk2)
ss2, err2 := sk2.sharedSecret(pk1)
if ss1 != ss2 {
if ss1 != ss2 || err1 != nil || err2 != nil {
t.Fatal("Failed to compute shared secet")
}
}