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Implement secure key via KDF for transparent data encryption/decryption #60

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This commit is contained in:
sgraves76
2025-08-29 19:45:04 -05:00
parent 72db4e12cd
commit faaf7648a8
2 changed files with 45 additions and 43 deletions
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87
support/src/utils/encryption.cpp
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@@ -84,6 +84,50 @@ void kdf_config::seal() {
checksum = generate_checksum();
}
auto decrypt_file_name(std::string_view encryption_token,
std::string &file_name) -> bool {
data_buffer buffer;
if (not utils::collection::from_hex_string(file_name, buffer)) {
return false;
}
file_name.clear();
return utils::encryption::decrypt_data(encryption_token, buffer, file_name);
}
auto decrypt_file_name(std::string_view encryption_token, const kdf_config &cfg,
std::string &file_name) -> bool {
data_buffer buffer;
if (not utils::collection::from_hex_string(file_name, buffer)) {
return false;
}
file_name.clear();
return utils::encryption::decrypt_data(encryption_token, cfg, buffer,
file_name);
}
auto decrypt_file_name(const utils::hash::hash_256_t &master_key,
std::string &file_name) -> bool {
data_buffer buffer;
if (not utils::collection::from_hex_string(file_name, buffer)) {
return false;
}
utils::encryption::kdf_config path_cfg;
if (not utils::encryption::kdf_config::from_header(buffer, path_cfg)) {
return false;
}
auto path_key = path_cfg.recreate_subkey(utils::encryption::kdf_context::path,
master_key);
file_name.clear();
return utils::encryption::decrypt_data(
path_key, &buffer[utils::encryption::kdf_config::size()],
buffer.size() - utils::encryption::kdf_config::size(), file_name);
}
auto decrypt_file_path(std::string_view encryption_token,
std::string &file_path) -> bool {
std::vector<std::string> decrypted_parts;
@@ -147,49 +191,6 @@ auto decrypt_file_path(const utils::hash::hash_256_t &master_key,
return true;
}
auto decrypt_file_name(std::string_view encryption_token,
std::string &file_name) -> bool {
data_buffer buffer;
if (not utils::collection::from_hex_string(file_name, buffer)) {
return false;
}
file_name.clear();
return utils::encryption::decrypt_data(encryption_token, buffer, file_name);
}
auto decrypt_file_name(std::string_view encryption_token, const kdf_config &cfg,
std::string &file_name) -> bool {
data_buffer buffer;
if (not utils::collection::from_hex_string(file_name, buffer)) {
return false;
}
file_name.clear();
return utils::encryption::decrypt_data(encryption_token, cfg, buffer,
file_name);
}
auto decrypt_file_name(const utils::hash::hash_256_t &master_key,
std::string &file_name) -> bool {
data_buffer buffer;
if (not utils::collection::from_hex_string(file_name, buffer)) {
return false;
}
utils::encryption::kdf_config path_cfg;
if (not utils::encryption::kdf_config::from_header(buffer, path_cfg)) {
return false;
}
auto path_key = path_cfg.recreate_subkey(utils::encryption::kdf_context::path,
master_key);
file_name.clear();
return utils::encryption::decrypt_data(
path_key, &buffer[utils::encryption::kdf_config::size()], file_name);
}
template <typename data_t>
[[nodiscard]] auto
read_encrypted_range(http_range range, const utils::hash::hash_256_t &key,