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Only support 32-byte keys in ChaCha20{,Aligned}

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This commit is contained in:
Pieter Wuille
2022-09-21 17:39:48 -04:00
parent f21994a02e
commit 62ec713961
9 changed files with 46 additions and 53 deletions
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12
src/test/fuzz/crypto_chacha20.cpp
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@@ -17,15 +17,15 @@ FUZZ_TARGET(crypto_chacha20)
ChaCha20 chacha20;
if (fuzzed_data_provider.ConsumeBool()) {
const std::vector<unsigned char> key = ConsumeFixedLengthByteVector(fuzzed_data_provider, fuzzed_data_provider.ConsumeIntegralInRange<size_t>(16, 32));
chacha20 = ChaCha20{key.data(), key.size()};
const std::vector<unsigned char> key = ConsumeFixedLengthByteVector(fuzzed_data_provider, 32);
chacha20 = ChaCha20{key.data()};
}
LIMITED_WHILE(fuzzed_data_provider.ConsumeBool(), 10000) {
CallOneOf(
fuzzed_data_provider,
[&] {
const std::vector<unsigned char> key = ConsumeFixedLengthByteVector(fuzzed_data_provider, fuzzed_data_provider.ConsumeIntegralInRange<size_t>(16, 32));
chacha20.SetKey(key.data(), key.size());
std::vector<unsigned char> key = ConsumeFixedLengthByteVector(fuzzed_data_provider, 32);
chacha20.SetKey32(key.data());
},
[&] {
chacha20.SetIV(fuzzed_data_provider.ConsumeIntegral<uint64_t>());
@@ -68,8 +68,8 @@ void ChaCha20SplitFuzz(FuzzedDataProvider& provider)
uint64_t seek = provider.ConsumeIntegralInRange<uint64_t>(0, ~(total_bytes >> 6));
// Initialize two ChaCha20 ciphers, with the same key/iv/position.
ChaCha20 crypt1(key, 32);
ChaCha20 crypt2(key, 32);
ChaCha20 crypt1(key);
ChaCha20 crypt2(key);
crypt1.SetIV(iv);
crypt1.Seek64(seek);
crypt2.SetIV(iv);