From d2e26c23f3caa7928c46c3a6bded85fdc1a68cb3 Mon Sep 17 00:00:00 2001 From: moneromooo-monero Date: Wed, 13 Jun 2018 18:23:06 +0100 Subject: add and use constant time 32 byte equality function --- tests/unit_tests/crypto.cpp | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'tests/unit_tests/crypto.cpp') diff --git a/tests/unit_tests/crypto.cpp b/tests/unit_tests/crypto.cpp index 9e1680568..29fa88f9d 100644 --- a/tests/unit_tests/crypto.cpp +++ b/tests/unit_tests/crypto.cpp @@ -81,3 +81,18 @@ TEST(Crypto, null_keys) ASSERT_EQ(memcmp(crypto::null_skey.data, zero, 32), 0); ASSERT_EQ(memcmp(crypto::null_pkey.data, zero, 32), 0); } + +TEST(Crypto, verify_32) +{ + // all bytes are treated the same, so we can brute force just one byte + unsigned char k0[32] = {0}, k1[32] = {0}; + for (unsigned int i0 = 0; i0 < 256; ++i0) + { + k0[0] = i0; + for (unsigned int i1 = 0; i1 < 256; ++i1) + { + k1[0] = i1; + ASSERT_EQ(!crypto_verify_32(k0, k1), i0 == i1); + } + } +} -- cgit v1.2.3