highperfocused/bitcoin
1
0
Fork 0
mirror of https://github.com/bitcoin/bitcoin.git synced 2025-12-10 12:43:30 +01:00
Code Issues Packages Projects Releases Wiki Activity

crypto: add FSChaCha20, a rekeying wrapper around ChaCha20

Browse Source 
This adds the FSChaCha20 stream cipher as specified in BIP324, a
wrapper around the ChaCha20 stream cipher (specified in RFC8439
section 2.4) which automatically rekeys every N messages, and
manages the nonces used for encryption.

Co-authored-by: dhruv <856960+dhruv@users.noreply.github.com>
This commit is contained in:
Pieter Wuille
2023-06-28 18:20:30 -04:00
parent 9ff0768bdc
commit 0fee267792
4 changed files with 164 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
src/test/fuzz/crypto_chacha20.cpp
View File

@@ -8,6 +8,8 @@
#include <test/fuzz/util.h>
#include <test/util/xoroshiro128plusplus.h>
#include <array>
#include <cstddef>
#include <cstdint>
#include <vector>
@@ -151,3 +153,21 @@ FUZZ_TARGET(chacha20_split_keystream)
FuzzedDataProvider provider{buffer.data(), buffer.size()};
ChaCha20SplitFuzz<false>(provider);
}
FUZZ_TARGET(crypto_fschacha20)
{
FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()};
auto key = fuzzed_data_provider.ConsumeBytes<std::byte>(FSChaCha20::KEYLEN);
key.resize(FSChaCha20::KEYLEN);
auto fsc20 = FSChaCha20{key, fuzzed_data_provider.ConsumeIntegralInRange<uint32_t>(1, 1024)};
LIMITED_WHILE(fuzzed_data_provider.ConsumeBool(), 10000)
{
auto input = fuzzed_data_provider.ConsumeBytes<std::byte>(fuzzed_data_provider.ConsumeIntegralInRange(0, 4096));
std::vector<std::byte> output;
output.resize(input.size());
fsc20.Crypt(input, output);
}
}