bkietz commented on code in PR #46017:
URL: https://github.com/apache/arrow/pull/46017#discussion_r2078226510
##########
cpp/src/parquet/encryption/encryption.cc:
##########
@@ -182,79 +175,75 @@
FileEncryptionProperties::Builder::disable_aad_prefix_storage() {
}
ColumnEncryptionProperties::ColumnEncryptionProperties(bool encrypted,
- const std::string&
column_path,
- const std::string& key,
- const std::string&
key_metadata)
- : column_path_(column_path) {
- DCHECK(!column_path.empty());
+ std::string column_path,
+
encryption::SecureString key,
+ std::string
key_metadata)
+ : column_path_(std::move(column_path)),
+ encrypted_(encrypted),
+ encrypted_with_footer_key_(encrypted && key.empty()),
+ key_(std::move(key)),
+ key_metadata_(std::move(key_metadata)) {
+ DCHECK(!column_path_.empty());
if (!encrypted) {
DCHECK(key.empty() && key_metadata.empty());
}
-
- if (!key.empty()) {
- DCHECK(key.length() == 16 || key.length() == 24 || key.length() == 32);
+ if (!key_.empty()) {
+ DCHECK(key_.length() == 16 || key_.length() == 24 || key_.length() == 32);
}
-
- encrypted_with_footer_key_ = (encrypted && key.empty());
if (encrypted_with_footer_key_) {
- DCHECK(key_metadata.empty());
+ DCHECK(key_metadata_.empty());
}
-
- encrypted_ = encrypted;
- key_metadata_ = key_metadata;
- key_ = key;
}
-ColumnDecryptionProperties::ColumnDecryptionProperties(const std::string&
column_path,
- const std::string& key)
- : column_path_(column_path) {
- DCHECK(!column_path.empty());
+ColumnDecryptionProperties::ColumnDecryptionProperties(std::string column_path,
+
encryption::SecureString key)
+ : column_path_(std::move(column_path)), key_(std::move(key)) {
+ DCHECK(!column_path_.empty());
- if (!key.empty()) {
- DCHECK(key.length() == 16 || key.length() == 24 || key.length() == 32);
+ if (!key_.empty()) {
+ DCHECK(key_.length() == 16 || key_.length() == 24 || key_.length() == 32);
}
-
- key_ = key;
}
-std::string FileDecryptionProperties::column_key(const std::string&
column_path) const {
+const encryption::SecureString& FileDecryptionProperties::column_key(
+ const std::string& column_path) const {
if (column_decryption_properties_.find(column_path) !=
column_decryption_properties_.end()) {
auto column_prop = column_decryption_properties_.at(column_path);
if (column_prop != nullptr) {
return column_prop->key();
}
}
- return empty_string_;
+ return no_key_;
Review Comment:
Another use for a generic default reference:
https://github.com/apache/arrow/pull/46303#discussion_r2075958465
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