blackmwk commented on code in PR #2339: URL: https://github.com/apache/iceberg-rust/pull/2339#discussion_r3122876309
########## crates/iceberg/src/encryption/kms/client.rs: ########## @@ -0,0 +1,92 @@ +// Licensed to the Apache Software Foundation (ASF) under one +// or more contributor license agreements. See the NOTICE file +// distributed with this work for additional information +// regarding copyright ownership. The ASF licenses this file +// to you under the Apache License, Version 2.0 (the +// "License"); you may not use this file except in compliance +// with the License. You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, +// software distributed under the License is distributed on an +// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +// KIND, either express or implied. See the License for the +// specific language governing permissions and limitations +// under the License. + +//! Key management client trait for encryption key operations. +//! +//! Mirrors the Java `KeyManagementClient` interface from the Apache Iceberg spec. + +use std::sync::Arc; + +use async_trait::async_trait; + +use crate::encryption::SensitiveBytes; +use crate::{Error, ErrorKind, Result}; + +/// Result of a server-side key generation operation. +/// +/// Returned by [`KeyManagementClient::generate_key`] when the KMS supports +/// atomic key generation and wrapping. +pub struct GeneratedKey { + /// The plaintext key bytes. Zeroized on drop, redacted in Debug. + pub key: SensitiveBytes, + /// The wrapped (encrypted) key bytes. + pub wrapped_key: Vec<u8>, +} + +/// Pluggable interface for key management systems (AWS KMS, Azure Key Vault, etc.). +#[async_trait] +pub trait KeyManagementClient: Send + Sync + std::fmt::Debug { + /// Wrap (encrypt) a key using a wrapping key managed by the KMS. + async fn wrap_key(&self, key: &[u8], wrapping_key_id: &str) -> Result<Vec<u8>>; Review Comment: Should this also be `SensitiveBytes`? ########## crates/iceberg/src/encryption/kms/in_memory.rs: ########## @@ -0,0 +1,287 @@ +// Licensed to the Apache Software Foundation (ASF) under one +// or more contributor license agreements. See the NOTICE file +// distributed with this work for additional information +// regarding copyright ownership. The ASF licenses this file +// to you under the Apache License, Version 2.0 (the +// "License"); you may not use this file except in compliance +// with the License. You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, +// software distributed under the License is distributed on an +// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +// KIND, either express or implied. See the License for the +// specific language governing permissions and limitations +// under the License. + +//! In-memory KMS implementation for testing and development. +//! +//! **WARNING**: This implementation is NOT suitable for production use. +//! Keys are stored in memory only and will be lost when the process exits. + +use std::collections::HashMap; +use std::fmt; +use std::sync::{Arc, PoisonError, RwLock}; + +use async_trait::async_trait; + +use super::KeyManagementClient; +use crate::encryption::{AesGcmCipher, AesKeySize, SecureKey, SensitiveBytes}; +use crate::{Error, ErrorKind, Result}; + +fn lock_error<T>(e: PoisonError<T>) -> Error { + Error::new(ErrorKind::Unexpected, format!("Lock poisoned: {e}")) +} + +/// In-memory KMS for testing. Not suitable for production use. +/// +/// ``` +/// use iceberg::encryption::KeyManagementClient; +/// use iceberg::encryption::kms::InMemoryKeyManagementClient; +/// +/// # async fn example() -> iceberg::Result<()> { +/// let kms = InMemoryKeyManagementClient::new(); +/// kms.add_master_key("my-master-key")?; +/// +/// let dek = vec![0u8; 16]; +/// let wrapped = kms.wrap_key(&dek, "my-master-key").await?; +/// let unwrapped = kms.unwrap_key(&wrapped, "my-master-key").await?; +/// assert_eq!(dek.as_slice(), unwrapped.as_bytes()); +/// # Ok(()) +/// # } +/// ``` +#[derive(Clone)] +pub struct InMemoryKeyManagementClient { Review Comment: ```suggestion pub struct MemoryKeyManagementClient { ``` Following conventions in other structs. ########## crates/iceberg/src/encryption/kms/client.rs: ########## @@ -0,0 +1,92 @@ +// Licensed to the Apache Software Foundation (ASF) under one +// or more contributor license agreements. See the NOTICE file +// distributed with this work for additional information +// regarding copyright ownership. The ASF licenses this file +// to you under the Apache License, Version 2.0 (the +// "License"); you may not use this file except in compliance +// with the License. You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, +// software distributed under the License is distributed on an +// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +// KIND, either express or implied. See the License for the +// specific language governing permissions and limitations +// under the License. + +//! Key management client trait for encryption key operations. +//! +//! Mirrors the Java `KeyManagementClient` interface from the Apache Iceberg spec. + +use std::sync::Arc; + +use async_trait::async_trait; + +use crate::encryption::SensitiveBytes; +use crate::{Error, ErrorKind, Result}; + +/// Result of a server-side key generation operation. +/// +/// Returned by [`KeyManagementClient::generate_key`] when the KMS supports +/// atomic key generation and wrapping. +pub struct KeyGenerationResult { + /// The plaintext key bytes. Zeroized on drop, redacted in Debug. + pub key: SensitiveBytes, + /// The wrapped (encrypted) key bytes. + pub wrapped_key: Vec<u8>, +} + +/// Pluggable interface for key management systems (AWS KMS, Azure Key Vault, etc.). +#[async_trait] +pub trait KeyManagementClient: Send + Sync + std::fmt::Debug { + /// Wrap (encrypt) a key using a wrapping key managed by the KMS. + async fn wrap_key(&self, key: &[u8], wrapping_key_id: &str) -> Result<Vec<u8>>; + + /// Unwrap (decrypt) a previously wrapped key. + async fn unwrap_key(&self, wrapped_key: &[u8], wrapping_key_id: &str) + -> Result<SensitiveBytes>; + + /// Whether this KMS supports server-side key generation. + /// + /// If `true`, callers can use [`generate_key`](Self::generate_key) for atomic + /// key generation and wrapping, which is more secure than generating a key + /// locally and then wrapping it. + fn supports_key_generation(&self) -> bool { Review Comment: I think it's fine to use this pattern. But I think we don't need to provide default implementation? Java provides default implementation to avoid breaking compatibility, we don't need this. ########## crates/iceberg/src/encryption/kms/in_memory.rs: ########## Review Comment: Rename it to `memory.rs` ########## crates/iceberg/src/encryption/kms/client.rs: ########## @@ -0,0 +1,92 @@ +// Licensed to the Apache Software Foundation (ASF) under one +// or more contributor license agreements. See the NOTICE file +// distributed with this work for additional information +// regarding copyright ownership. The ASF licenses this file +// to you under the Apache License, Version 2.0 (the +// "License"); you may not use this file except in compliance +// with the License. You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, +// software distributed under the License is distributed on an +// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +// KIND, either express or implied. See the License for the +// specific language governing permissions and limitations +// under the License. + +//! Key management client trait for encryption key operations. +//! +//! Mirrors the Java `KeyManagementClient` interface from the Apache Iceberg spec. + +use std::sync::Arc; + +use async_trait::async_trait; + +use crate::encryption::SensitiveBytes; +use crate::{Error, ErrorKind, Result}; + +/// Result of a server-side key generation operation. +/// +/// Returned by [`KeyManagementClient::generate_key`] when the KMS supports +/// atomic key generation and wrapping. +pub struct GeneratedKey { Review Comment: We should avoid pub field pattern. ########## crates/iceberg/src/encryption/kms/in_memory.rs: ########## @@ -0,0 +1,287 @@ +// Licensed to the Apache Software Foundation (ASF) under one +// or more contributor license agreements. See the NOTICE file +// distributed with this work for additional information +// regarding copyright ownership. The ASF licenses this file +// to you under the Apache License, Version 2.0 (the +// "License"); you may not use this file except in compliance +// with the License. You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, +// software distributed under the License is distributed on an +// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +// KIND, either express or implied. See the License for the +// specific language governing permissions and limitations +// under the License. + +//! In-memory KMS implementation for testing and development. +//! +//! **WARNING**: This implementation is NOT suitable for production use. +//! Keys are stored in memory only and will be lost when the process exits. + +use std::collections::HashMap; +use std::fmt; +use std::sync::{Arc, PoisonError, RwLock}; + +use async_trait::async_trait; + +use super::KeyManagementClient; +use crate::encryption::{AesGcmCipher, AesKeySize, SecureKey, SensitiveBytes}; +use crate::{Error, ErrorKind, Result}; + +fn lock_error<T>(e: PoisonError<T>) -> Error { + Error::new(ErrorKind::Unexpected, format!("Lock poisoned: {e}")) +} + +/// In-memory KMS for testing. Not suitable for production use. +/// +/// ``` +/// use iceberg::encryption::KeyManagementClient; +/// use iceberg::encryption::kms::InMemoryKeyManagementClient; +/// +/// # async fn example() -> iceberg::Result<()> { +/// let kms = InMemoryKeyManagementClient::new(); +/// kms.add_master_key("my-master-key")?; +/// +/// let dek = vec![0u8; 16]; +/// let wrapped = kms.wrap_key(&dek, "my-master-key").await?; +/// let unwrapped = kms.unwrap_key(&wrapped, "my-master-key").await?; +/// assert_eq!(dek.as_slice(), unwrapped.as_bytes()); +/// # Ok(()) +/// # } +/// ``` +#[derive(Clone)] +pub struct InMemoryKeyManagementClient { + master_keys: Arc<RwLock<HashMap<String, SensitiveBytes>>>, + master_key_size: AesKeySize, +} + +impl fmt::Debug for InMemoryKeyManagementClient { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + f.debug_struct("InMemoryKeyManagementClient") + .field("master_key_size", &self.master_key_size) + .field("key_count", &self.key_count()) + .finish() + } +} + +impl Default for InMemoryKeyManagementClient { + fn default() -> Self { + Self::new() + } +} + +impl InMemoryKeyManagementClient { + /// Creates a new in-memory KMS with 128-bit AES keys. + pub fn new() -> Self { Review Comment: We could derive default if we make `AesKeySize::Bits128` default? -- This is an automated message from the Apache Git Service. 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