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authorKai Michaelis <[email protected]>2016-07-28 16:24:46 +0200
committerKai Michaelis <[email protected]>2016-08-10 13:43:14 +0200
commita7967542e6e11ab399dca702669282208107e126 (patch)
treeced53368d5ec3239c9302acfc843069b23bfee9f /src/tests
parent3f4e00b7d856d9176d0332c5eb65b4afa406544f (diff)
reseed test for hmac_drbg
Diffstat (limited to 'src/tests')
-rw-r--r--src/tests/test_rng.cpp41
1 files changed, 41 insertions, 0 deletions
diff --git a/src/tests/test_rng.cpp b/src/tests/test_rng.cpp
index 2092f7545..ab5a38135 100644
--- a/src/tests/test_rng.cpp
+++ b/src/tests/test_rng.cpp
@@ -100,6 +100,47 @@ class HMAC_DRBG_Tests : public Text_Based_Test
BOTAN_REGISTER_TEST("hmac_drbg", HMAC_DRBG_Tests);
+class HMAC_DRBG_Reseed_Tests : public Test
+ {
+ public:
+ HMAC_DRBG_Reseed_Tests() : Test() {}
+
+ std::vector<Test::Result> run() override
+ {
+ Test::Result result("HMAC_DRBG Reseed");
+
+ auto mac = Botan::MessageAuthenticationCode::create("HMAC(SHA-256)");
+ if(!mac)
+ {
+ result.note_missing("HMAC(SHA-256)");
+ return {result};
+ }
+
+ Botan::HMAC_DRBG rng(mac.release(), 17);
+ Botan::secure_vector<Botan::byte> seed_input(
+ {0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD,0xEE,0xFF});
+ Botan::secure_vector<Botan::byte> output_after_initialization(
+ {0x26,0x06,0x95,0xF4,0xB8,0x96,0x0D,0x0B,0x27,0x4E,0xA2,0x9E,0x8D,0x2B,0x5A,0x35});
+ Botan::secure_vector<Botan::byte> output_without_reseed(
+ {0xC4,0x90,0x04,0x5B,0x35,0x4F,0x50,0x09,0x68,0x45,0xF0,0x4B,0x11,0x03,0x58,0xF0});
+ result.test_eq("is_seeded",rng.is_seeded(),false);
+
+ rng.initialize_with(seed_input.data(), seed_input.size());
+
+ Botan::secure_vector<Botan::byte> out(16);
+
+ rng.randomize(out.data(), out.size());
+ result.test_eq("out before reseed", out, output_after_initialization);
+
+ // reseed must happend here
+ rng.randomize(out.data(), out.size());
+ result.test_ne("out after reseed", out, output_without_reseed);
+ return {result};
+ }
+ };
+
+BOTAN_REGISTER_TEST("hmac_drbg_reseed", HMAC_DRBG_Reseed_Tests);
+
#endif
}