diff options
Diffstat (limited to 'src/crypto/chacha.h')
| -rw-r--r-- | src/crypto/chacha.h | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/src/crypto/chacha.h b/src/crypto/chacha.h index 2b3ed8043..1dc270faf 100644 --- a/src/crypto/chacha.h +++ b/src/crypto/chacha.h @@ -69,22 +69,26 @@ namespace crypto { chacha20(data, length, key.data(), reinterpret_cast<const uint8_t*>(&iv), cipher); } - inline void generate_chacha_key(const void *data, size_t size, chacha_key& key) { + inline void generate_chacha_key(const void *data, size_t size, chacha_key& key, uint64_t kdf_rounds) { static_assert(sizeof(chacha_key) <= sizeof(hash), "Size of hash must be at least that of chacha_key"); tools::scrubbed_arr<char, HASH_SIZE> pwd_hash; crypto::cn_slow_hash(data, size, pwd_hash.data(), 0/*variant*/, 0/*prehashed*/); + for (uint64_t n = 1; n < kdf_rounds; ++n) + crypto::cn_slow_hash(pwd_hash.data(), pwd_hash.size(), pwd_hash.data(), 0/*variant*/, 0/*prehashed*/); memcpy(&unwrap(key), pwd_hash.data(), sizeof(key)); } - inline void generate_chacha_key_prehashed(const void *data, size_t size, chacha_key& key) { + inline void generate_chacha_key_prehashed(const void *data, size_t size, chacha_key& key, uint64_t kdf_rounds) { static_assert(sizeof(chacha_key) <= sizeof(hash), "Size of hash must be at least that of chacha_key"); tools::scrubbed_arr<char, HASH_SIZE> pwd_hash; crypto::cn_slow_hash(data, size, pwd_hash.data(), 0/*variant*/, 1/*prehashed*/); + for (uint64_t n = 1; n < kdf_rounds; ++n) + crypto::cn_slow_hash(pwd_hash.data(), pwd_hash.size(), pwd_hash.data(), 0/*variant*/, 0/*prehashed*/); memcpy(&unwrap(key), pwd_hash.data(), sizeof(key)); } - inline void generate_chacha_key(std::string password, chacha_key& key) { - return generate_chacha_key(password.data(), password.size(), key); + inline void generate_chacha_key(std::string password, chacha_key& key, uint64_t kdf_rounds) { + return generate_chacha_key(password.data(), password.size(), key, kdf_rounds); } } |