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author | Pieter Wuille <pieter@wuille.net> | 2023-06-29 14:55:16 -0400 |
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committer | Pieter Wuille <pieter@wuille.net> | 2023-07-26 16:55:05 -0400 |
commit | aa8cee93342ee857931afec9af3ff5dbd8ce7749 (patch) | |
tree | 3bc9c334f70cc1f6dbc02bd06785ccf2e4d3fc2c /src/test/crypto_tests.cpp | |
parent | 0fee267792eb8cbdd48ad78f1712420b5d8d905b (diff) | |
download | bitcoin-aa8cee93342ee857931afec9af3ff5dbd8ce7749.tar.xz |
crypto: add FSChaCha20Poly1305, rekeying wrapper around ChaCha20Poly1305
This adds the FSChaCha20Poly1305 AEAD as specified in BIP324, a wrapper
around the ChaCha20Poly1305 AEAD (as specified in RFC8439 section 2.8) which
automatically rekeys every N messages, and automatically increments the nonce
every message.
Diffstat (limited to 'src/test/crypto_tests.cpp')
-rw-r--r-- | src/test/crypto_tests.cpp | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/src/test/crypto_tests.cpp b/src/test/crypto_tests.cpp index d50596c204..149a8cf7bf 100644 --- a/src/test/crypto_tests.cpp +++ b/src/test/crypto_tests.cpp @@ -264,6 +264,41 @@ static void TestChaCha20Poly1305(const std::string& plain_hex, const std::string bool ret = aead.Decrypt(cipher, aad, nonce, decipher); BOOST_CHECK(ret); BOOST_CHECK(decipher == plain); + + std::vector<std::byte> keystream(plain.size()); + aead.Keystream(nonce, keystream); + for (size_t i = 0; i < plain.size(); ++i) { + BOOST_CHECK_EQUAL(plain[i] ^ keystream[i], cipher[i]); + } +} + +static void TestFSChaCha20Poly1305(const std::string& plain_hex, const std::string& aad_hex, const std::string& key_hex, uint64_t msg_idx, const std::string& cipher_hex) +{ + auto plain = ParseHex<std::byte>(plain_hex); + auto aad = ParseHex<std::byte>(aad_hex); + auto key = ParseHex<std::byte>(key_hex); + auto expected_cipher = ParseHex<std::byte>(cipher_hex); + std::vector<std::byte> cipher(plain.size() + FSChaCha20Poly1305::EXPANSION); + + FSChaCha20Poly1305 enc_aead{key, 224}; + for (uint64_t i = 0; i < msg_idx; ++i) { + std::byte dummy_tag[FSChaCha20Poly1305::EXPANSION] = {{}}; + enc_aead.Encrypt(Span{dummy_tag}.first(0), Span{dummy_tag}.first(0), dummy_tag); + } + + enc_aead.Encrypt(plain, aad, cipher); + BOOST_CHECK(cipher == expected_cipher); + + FSChaCha20Poly1305 dec_aead{key, 224}; + for (uint64_t i = 0; i < msg_idx; ++i) { + std::byte dummy_tag[FSChaCha20Poly1305::EXPANSION] = {{}}; + dec_aead.Decrypt(dummy_tag, Span{dummy_tag}.first(0), Span{dummy_tag}.first(0)); + } + + std::vector<std::byte> decipher(cipher.size() - AEADChaCha20Poly1305::EXPANSION); + bool ret = dec_aead.Decrypt(cipher, aad, decipher); + BOOST_CHECK(ret); + BOOST_CHECK(decipher == plain); } static void TestHKDF_SHA256_32(const std::string &ikm_hex, const std::string &salt_hex, const std::string &info_hex, const std::string &okm_check_hex) { @@ -947,6 +982,29 @@ BOOST_AUTO_TEST_CASE(chacha20poly1305_testvectors) "77adda51d6730b9ad6c995658cbd49f581b2547e7c0c08fcc24ceec797461021", {0x1f90da88, 0x75dafa3ef84471a4}, "aaae5bb81e8407c94b2ae86ae0c7efbe"); + + // FSChaCha20Poly1305 tests. + TestFSChaCha20Poly1305("d6a4cb04ef0f7c09c1866ed29dc24d820e75b0491032a51b4c3366f9ca35c19e" + "a3047ec6be9d45f9637b63e1cf9eb4c2523a5aab7b851ebeba87199db0e839cf" + "0d5c25e50168306377aedbe9089fd2463ded88b83211cf51b73b150608cc7a60" + "0d0f11b9a742948482e1b109d8faf15b450aa7322e892fa2208c6691e3fecf4c" + "711191b14d75a72147", + "786cb9b6ebf44288974cf0", + "5c9e1c3951a74fba66708bf9d2c217571684556b6a6a3573bff2847d38612654", + 500, + "9dcebbd3281ea3dd8e9a1ef7d55a97abd6743e56ebc0c190cb2c4e14160b385e" + "0bf508dddf754bd02c7c208447c131ce23e47a4a14dfaf5dd8bc601323950f75" + "4e05d46e9232f83fc5120fbbef6f5347a826ec79a93820718d4ec7a2b7cfaaa4" + "4b21e16d726448b62f803811aff4f6d827ed78e738ce8a507b81a8ae13131192" + "8039213de18a5120dc9b7370baca878f50ff254418de3da50c"); + TestFSChaCha20Poly1305("8349b7a2690b63d01204800c288ff1138a1d473c832c90ea8b3fc102d0bb3adc" + "44261b247c7c3d6760bfbe979d061c305f46d94c0582ac3099f0bf249f8cb234", + "", + "3bd2093fcbcb0d034d8c569583c5425c1a53171ea299f8cc3bbf9ae3530adfce", + 60000, + "30a6757ff8439b975363f166a0fa0e36722ab35936abd704297948f45083f4d4" + "99433137ce931f7fca28a0acd3bc30f57b550acbc21cbd45bbef0739d9caf30c" + "14b94829deb27f0b1923a2af704ae5d6"); } BOOST_AUTO_TEST_CASE(hkdf_hmac_sha256_l32_tests) |