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merge bitcoin#22331: Fix K1/K2 use in ChaCha20-Poly1305 AEAD

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This commit is contained in:
Kittywhiskers Van Gogh 2021-06-18 13:25:17 -07:00
parent d949c90bc0
commit df06dfa435
2 changed files with 5 additions and 4 deletions
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5
src/crypto/chacha_poly_aead.cpp
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@ -32,8 +32,9 @@ ChaCha20Poly1305AEAD::ChaCha20Poly1305AEAD(const unsigned char* K_1, size_t K_1_
{ {
assert(K_1_len == CHACHA20_POLY1305_AEAD_KEY_LEN); assert(K_1_len == CHACHA20_POLY1305_AEAD_KEY_LEN);
assert(K_2_len == CHACHA20_POLY1305_AEAD_KEY_LEN); assert(K_2_len == CHACHA20_POLY1305_AEAD_KEY_LEN);
m_chacha_main.SetKey(K_1, CHACHA20_POLY1305_AEAD_KEY_LEN);
m_chacha_header.SetKey(K_2, CHACHA20_POLY1305_AEAD_KEY_LEN); m_chacha_header.SetKey(K_1, CHACHA20_POLY1305_AEAD_KEY_LEN);
m_chacha_main.SetKey(K_2, CHACHA20_POLY1305_AEAD_KEY_LEN);
// set the cached sequence number to uint64 max which hints for an unset cache. // set the cached sequence number to uint64 max which hints for an unset cache.
// we can't hit uint64 max since the rekey rule (which resets the sequence number) is 1GB // we can't hit uint64 max since the rekey rule (which resets the sequence number) is 1GB

4
src/test/crypto_tests.cpp
View File

@ -639,7 +639,7 @@ static void TestChaCha20Poly1305AEAD(bool must_succeed, unsigned int expected_aa
ChaCha20Poly1305AEAD aead(aead_K_1.data(), aead_K_1.size(), aead_K_2.data(), aead_K_2.size()); ChaCha20Poly1305AEAD aead(aead_K_1.data(), aead_K_1.size(), aead_K_2.data(), aead_K_2.size());
// create a chacha20 instance to compare against // create a chacha20 instance to compare against
ChaCha20 cmp_ctx(aead_K_2.data(), 32); ChaCha20 cmp_ctx(aead_K_1.data(), 32);
// encipher // encipher
bool res = aead.Crypt(seqnr_payload, seqnr_aad, aad_pos, ciphertext_buf.data(), ciphertext_buf.size(), plaintext_buf.data(), plaintext_buf.size(), true); bool res = aead.Crypt(seqnr_payload, seqnr_aad, aad_pos, ciphertext_buf.data(), ciphertext_buf.size(), plaintext_buf.data(), plaintext_buf.size(), true);
@ -730,8 +730,8 @@ BOOST_AUTO_TEST_CASE(chacha20_poly1305_aead_testvector)
"b1a03d5bd2855d60699e7d3a3133fa47be740fe4e4c1f967555e2d9271f31c3a8bd94d54b5ecabbc41ffbb0c90924080"); "b1a03d5bd2855d60699e7d3a3133fa47be740fe4e4c1f967555e2d9271f31c3a8bd94d54b5ecabbc41ffbb0c90924080");
TestChaCha20Poly1305AEAD(true, 255, TestChaCha20Poly1305AEAD(true, 255,
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"000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f",
"c640c1711e3ee904ac35c57ab9791c8a1c408603a90b77a83b54f6c844cb4b06d94e7fc6c800e165acd66147e80ec45a567f6ce66d05ec0cae679dceeb890017", "c640c1711e3ee904ac35c57ab9791c8a1c408603a90b77a83b54f6c844cb4b06d94e7fc6c800e165acd66147e80ec45a567f6ce66d05ec0cae679dceeb890017",
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