477 lines
19 KiB
Rust
477 lines
19 KiB
Rust
// Copyright 2015-2017 Parity Technologies (UK) Ltd.
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// This file is part of Parity.
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// Parity is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity. If not, see <http://www.gnu.org/licenses/>.
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use std::path::PathBuf;
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use std::collections::BTreeMap;
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use serde_json;
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use ethkey::{Secret, Public};
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use kvdb_rocksdb::{Database, DatabaseIterator};
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use types::all::{Error, ServiceConfiguration, ServerKeyId, NodeId};
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use serialization::{SerializablePublic, SerializableSecret};
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/// Key of version value.
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const DB_META_KEY_VERSION: &'static [u8; 7] = b"version";
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/// Current db version.
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const CURRENT_VERSION: u8 = 2;
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/// Current type of serialized key shares.
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type CurrentSerializableDocumentKeyShare = SerializableDocumentKeyShareV2;
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/// Encrypted key share, stored by key storage on the single key server.
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#[derive(Debug, Clone, PartialEq)]
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pub struct DocumentKeyShare {
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/// Author of the entry.
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pub author: Public,
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/// Decryption threshold (at least threshold + 1 nodes are required to decrypt data).
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pub threshold: usize,
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/// Nodes ids numbers.
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pub id_numbers: BTreeMap<NodeId, Secret>,
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/// Polynom1.
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pub polynom1: Vec<Secret>,
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/// Node secret share.
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pub secret_share: Secret,
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/// Common (shared) encryption point.
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pub common_point: Option<Public>,
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/// Encrypted point.
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pub encrypted_point: Option<Public>,
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}
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/// Document encryption keys storage
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pub trait KeyStorage: Send + Sync {
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/// Insert document encryption key
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fn insert(&self, document: ServerKeyId, key: DocumentKeyShare) -> Result<(), Error>;
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/// Update document encryption key
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fn update(&self, document: ServerKeyId, key: DocumentKeyShare) -> Result<(), Error>;
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/// Get document encryption key
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fn get(&self, document: &ServerKeyId) -> Result<DocumentKeyShare, Error>;
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/// Remove document encryption key
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fn remove(&self, document: &ServerKeyId) -> Result<(), Error>;
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/// Check if storage contains document encryption key
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fn contains(&self, document: &ServerKeyId) -> bool;
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/// Iterate through storage
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fn iter<'a>(&'a self) -> Box<Iterator<Item=(ServerKeyId, DocumentKeyShare)> + 'a>;
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}
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/// Persistent document encryption keys storage
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pub struct PersistentKeyStorage {
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db: Database,
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}
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/// Persistent document encryption keys storage iterator
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pub struct PersistentKeyStorageIterator<'a> {
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iter: Option<DatabaseIterator<'a>>,
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}
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/// V0 of encrypted key share, as it is stored by key storage on the single key server.
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#[derive(Serialize, Deserialize)]
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struct SerializableDocumentKeyShareV0 {
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/// Decryption threshold (at least threshold + 1 nodes are required to decrypt data).
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pub threshold: usize,
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/// Nodes ids numbers.
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pub id_numbers: BTreeMap<SerializablePublic, SerializableSecret>,
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/// Node secret share.
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pub secret_share: SerializableSecret,
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/// Common (shared) encryption point.
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pub common_point: SerializablePublic,
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/// Encrypted point.
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pub encrypted_point: SerializablePublic,
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}
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/// V1 of encrypted key share, as it is stored by key storage on the single key server.
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#[derive(Serialize, Deserialize)]
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struct SerializableDocumentKeyShareV1 {
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/// Authore of the entry.
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pub author: SerializablePublic,
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/// Decryption threshold (at least threshold + 1 nodes are required to decrypt data).
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pub threshold: usize,
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/// Nodes ids numbers.
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pub id_numbers: BTreeMap<SerializablePublic, SerializableSecret>,
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/// Node secret share.
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pub secret_share: SerializableSecret,
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/// Common (shared) encryption point.
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pub common_point: Option<SerializablePublic>,
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/// Encrypted point.
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pub encrypted_point: Option<SerializablePublic>,
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}
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/// V2 of encrypted key share, as it is stored by key storage on the single key server.
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#[derive(Serialize, Deserialize)]
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struct SerializableDocumentKeyShareV2 {
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/// Authore of the entry.
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pub author: SerializablePublic,
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/// Decryption threshold (at least threshold + 1 nodes are required to decrypt data).
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pub threshold: usize,
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/// Nodes ids numbers.
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pub id_numbers: BTreeMap<SerializablePublic, SerializableSecret>,
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/// Polynom1.
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pub polynom1: Vec<SerializableSecret>,
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/// Node secret share.
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pub secret_share: SerializableSecret,
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/// Common (shared) encryption point.
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pub common_point: Option<SerializablePublic>,
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/// Encrypted point.
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pub encrypted_point: Option<SerializablePublic>,
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}
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impl PersistentKeyStorage {
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/// Create new persistent document encryption keys storage
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pub fn new(config: &ServiceConfiguration) -> Result<Self, Error> {
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let mut db_path = PathBuf::from(&config.data_path);
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db_path.push("db");
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let db_path = db_path.to_str().ok_or(Error::Database("Invalid secretstore path".to_owned()))?;
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let db = Database::open_default(&db_path).map_err(Error::Database)?;
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let db = upgrade_db(db)?;
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Ok(PersistentKeyStorage {
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db: db,
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})
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}
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}
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fn upgrade_db(db: Database) -> Result<Database, Error> {
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let version = db.get(None, DB_META_KEY_VERSION).map_err(Error::Database)?;
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let version = version.and_then(|v| v.get(0).cloned()).unwrap_or(0);
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match version {
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0 => {
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let mut batch = db.transaction();
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batch.put(None, DB_META_KEY_VERSION, &[CURRENT_VERSION]);
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for (db_key, db_value) in db.iter(None).into_iter().flat_map(|inner| inner).filter(|&(ref k, _)| **k != *DB_META_KEY_VERSION) {
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let v0_key = serde_json::from_slice::<SerializableDocumentKeyShareV0>(&db_value).map_err(|e| Error::Database(e.to_string()))?;
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let v2_key = CurrentSerializableDocumentKeyShare {
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// author is used in separate generation + encrypt sessions.
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// in v0 there have been only simultaneous GenEnc sessions.
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author: Public::default().into(), // added in v1
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threshold: v0_key.threshold,
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id_numbers: v0_key.id_numbers,
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secret_share: v0_key.secret_share,
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polynom1: Vec::new(), // added in v2
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common_point: Some(v0_key.common_point),
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encrypted_point: Some(v0_key.encrypted_point),
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};
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let db_value = serde_json::to_vec(&v2_key).map_err(|e| Error::Database(e.to_string()))?;
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batch.put(None, &*db_key, &*db_value);
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}
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db.write(batch).map_err(Error::Database)?;
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Ok(db)
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},
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1 => {
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let mut batch = db.transaction();
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batch.put(None, DB_META_KEY_VERSION, &[CURRENT_VERSION]);
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for (db_key, db_value) in db.iter(None).into_iter().flat_map(|inner| inner).filter(|&(ref k, _)| **k != *DB_META_KEY_VERSION) {
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let v1_key = serde_json::from_slice::<SerializableDocumentKeyShareV1>(&db_value).map_err(|e| Error::Database(e.to_string()))?;
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let v2_key = CurrentSerializableDocumentKeyShare {
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author: v1_key.author, // added in v1
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threshold: v1_key.threshold,
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id_numbers: v1_key.id_numbers,
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secret_share: v1_key.secret_share,
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polynom1: Vec::new(), // added in v2
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common_point: v1_key.common_point,
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encrypted_point: v1_key.encrypted_point,
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};
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let db_value = serde_json::to_vec(&v2_key).map_err(|e| Error::Database(e.to_string()))?;
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batch.put(None, &*db_key, &*db_value);
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}
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db.write(batch).map_err(Error::Database)?;
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Ok(db)
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}
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2 => Ok(db),
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_ => Err(Error::Database(format!("unsupported SecretStore database version: {}", version))),
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}
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}
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impl KeyStorage for PersistentKeyStorage {
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fn insert(&self, document: ServerKeyId, key: DocumentKeyShare) -> Result<(), Error> {
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let key: CurrentSerializableDocumentKeyShare = key.into();
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let key = serde_json::to_vec(&key).map_err(|e| Error::Database(e.to_string()))?;
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let mut batch = self.db.transaction();
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batch.put(None, &document, &key);
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self.db.write(batch).map_err(Error::Database)
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}
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fn update(&self, document: ServerKeyId, key: DocumentKeyShare) -> Result<(), Error> {
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self.insert(document, key)
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}
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fn get(&self, document: &ServerKeyId) -> Result<DocumentKeyShare, Error> {
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self.db.get(None, document)
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.map_err(Error::Database)?
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.ok_or(Error::DocumentNotFound)
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.map(|key| key.into_vec())
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.and_then(|key| serde_json::from_slice::<CurrentSerializableDocumentKeyShare>(&key).map_err(|e| Error::Database(e.to_string())))
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.map(Into::into)
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}
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fn remove(&self, document: &ServerKeyId) -> Result<(), Error> {
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let mut batch = self.db.transaction();
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batch.delete(None, &document);
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self.db.write(batch).map_err(Error::Database)
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}
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fn contains(&self, document: &ServerKeyId) -> bool {
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self.db.get(None, document)
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.map(|k| k.is_some())
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.unwrap_or(false)
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}
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fn iter<'a>(&'a self) -> Box<Iterator<Item=(ServerKeyId, DocumentKeyShare)> + 'a> {
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Box::new(PersistentKeyStorageIterator {
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iter: self.db.iter(None),
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})
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}
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}
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impl<'a> Iterator for PersistentKeyStorageIterator<'a> {
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type Item = (ServerKeyId, DocumentKeyShare);
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fn next(&mut self) -> Option<(ServerKeyId, DocumentKeyShare)> {
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self.iter.as_mut()
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.and_then(|iter| iter.next()
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.and_then(|(db_key, db_val)| serde_json::from_slice::<CurrentSerializableDocumentKeyShare>(&db_val)
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.ok()
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.map(|key| ((*db_key).into(), key.into()))))
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}
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}
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impl From<DocumentKeyShare> for SerializableDocumentKeyShareV2 {
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fn from(key: DocumentKeyShare) -> Self {
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SerializableDocumentKeyShareV2 {
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author: key.author.into(),
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threshold: key.threshold,
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id_numbers: key.id_numbers.into_iter().map(|(k, v)| (k.into(), v.into())).collect(),
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secret_share: key.secret_share.into(),
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polynom1: key.polynom1.into_iter().map(Into::into).collect(),
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common_point: key.common_point.map(Into::into),
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encrypted_point: key.encrypted_point.map(Into::into),
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}
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}
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}
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impl From<DocumentKeyShare> for SerializableDocumentKeyShareV1 {
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fn from(key: DocumentKeyShare) -> Self {
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SerializableDocumentKeyShareV1 {
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author: key.author.into(),
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threshold: key.threshold,
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id_numbers: key.id_numbers.into_iter().map(|(k, v)| (k.into(), v.into())).collect(),
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secret_share: key.secret_share.into(),
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common_point: key.common_point.map(Into::into),
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encrypted_point: key.encrypted_point.map(Into::into),
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}
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}
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}
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impl From<SerializableDocumentKeyShareV2> for DocumentKeyShare {
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fn from(key: SerializableDocumentKeyShareV2) -> Self {
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DocumentKeyShare {
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author: key.author.into(),
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threshold: key.threshold,
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id_numbers: key.id_numbers.into_iter().map(|(k, v)| (k.into(), v.into())).collect(),
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secret_share: key.secret_share.into(),
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polynom1: key.polynom1.into_iter().map(Into::into).collect(),
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common_point: key.common_point.map(Into::into),
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encrypted_point: key.encrypted_point.map(Into::into),
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}
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}
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}
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#[cfg(test)]
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pub mod tests {
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use std::collections::{BTreeMap, HashMap};
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use parking_lot::RwLock;
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use serde_json;
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use devtools::RandomTempPath;
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use ethkey::{Random, Generator, Public, Secret};
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use kvdb_rocksdb::Database;
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use types::all::{Error, NodeAddress, ServiceConfiguration, ClusterConfiguration, ServerKeyId};
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use super::{DB_META_KEY_VERSION, CURRENT_VERSION, KeyStorage, PersistentKeyStorage, DocumentKeyShare,
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SerializableDocumentKeyShareV0, SerializableDocumentKeyShareV1,
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CurrentSerializableDocumentKeyShare, upgrade_db};
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/// In-memory document encryption keys storage
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#[derive(Default)]
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pub struct DummyKeyStorage {
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keys: RwLock<HashMap<ServerKeyId, DocumentKeyShare>>,
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}
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impl KeyStorage for DummyKeyStorage {
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fn insert(&self, document: ServerKeyId, key: DocumentKeyShare) -> Result<(), Error> {
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self.keys.write().insert(document, key);
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Ok(())
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}
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fn update(&self, document: ServerKeyId, key: DocumentKeyShare) -> Result<(), Error> {
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self.keys.write().insert(document, key);
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Ok(())
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}
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fn get(&self, document: &ServerKeyId) -> Result<DocumentKeyShare, Error> {
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self.keys.read().get(document).cloned().ok_or(Error::DocumentNotFound)
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}
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fn remove(&self, document: &ServerKeyId) -> Result<(), Error> {
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self.keys.write().remove(document);
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Ok(())
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}
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fn contains(&self, document: &ServerKeyId) -> bool {
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self.keys.read().contains_key(document)
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}
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fn iter<'a>(&'a self) -> Box<Iterator<Item=(ServerKeyId, DocumentKeyShare)> + 'a> {
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Box::new(self.keys.read().clone().into_iter())
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}
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}
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#[test]
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fn persistent_key_storage() {
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let path = RandomTempPath::create_dir();
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let config = ServiceConfiguration {
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listener_address: None,
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acl_check_enabled: true,
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data_path: path.as_str().to_owned(),
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cluster_config: ClusterConfiguration {
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threads: 1,
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listener_address: NodeAddress {
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address: "0.0.0.0".to_owned(),
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port: 8083,
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},
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nodes: BTreeMap::new(),
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allow_connecting_to_higher_nodes: false,
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admin_public: None,
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},
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};
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let key1 = ServerKeyId::from(1);
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let value1 = DocumentKeyShare {
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author: Public::default(),
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threshold: 100,
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id_numbers: vec![
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(Random.generate().unwrap().public().clone(), Random.generate().unwrap().secret().clone())
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].into_iter().collect(),
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secret_share: Random.generate().unwrap().secret().clone(),
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polynom1: Vec::new(),
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common_point: Some(Random.generate().unwrap().public().clone()),
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encrypted_point: Some(Random.generate().unwrap().public().clone()),
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};
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let key2 = ServerKeyId::from(2);
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let value2 = DocumentKeyShare {
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author: Public::default(),
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threshold: 200,
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id_numbers: vec![
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(Random.generate().unwrap().public().clone(), Random.generate().unwrap().secret().clone())
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].into_iter().collect(),
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secret_share: Random.generate().unwrap().secret().clone(),
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polynom1: Vec::new(),
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common_point: Some(Random.generate().unwrap().public().clone()),
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encrypted_point: Some(Random.generate().unwrap().public().clone()),
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};
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let key3 = ServerKeyId::from(3);
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let key_storage = PersistentKeyStorage::new(&config).unwrap();
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key_storage.insert(key1.clone(), value1.clone()).unwrap();
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key_storage.insert(key2.clone(), value2.clone()).unwrap();
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assert_eq!(key_storage.get(&key1), Ok(value1.clone()));
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assert_eq!(key_storage.get(&key2), Ok(value2.clone()));
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assert_eq!(key_storage.get(&key3), Err(Error::DocumentNotFound));
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drop(key_storage);
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let key_storage = PersistentKeyStorage::new(&config).unwrap();
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assert_eq!(key_storage.get(&key1), Ok(value1));
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assert_eq!(key_storage.get(&key2), Ok(value2));
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assert_eq!(key_storage.get(&key3), Err(Error::DocumentNotFound));
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}
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#[test]
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fn upgrade_db_from_0() {
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let db_path = RandomTempPath::create_dir();
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let db = Database::open_default(db_path.as_str()).unwrap();
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// prepare v0 database
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{
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let key = serde_json::to_vec(&SerializableDocumentKeyShareV0 {
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threshold: 777,
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id_numbers: vec![(
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"b486d3840218837b035c66196ecb15e6b067ca20101e11bd5e626288ab6806ecc70b8307012626bd512bad1559112d11d21025cef48cc7a1d2f3976da08f36c8".into(),
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"281b6bf43cb86d0dc7b98e1b7def4a80f3ce16d28d2308f934f116767306f06c".parse::<Secret>().unwrap().into(),
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)].into_iter().collect(),
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secret_share: "00125d85a05e5e63e214cb60fe63f132eec8a103aa29266b7e6e6c5b7597230b".parse::<Secret>().unwrap().into(),
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common_point: "99e82b163b062d55a64085bacfd407bb55f194ba5fb7a1af9c34b84435455520f1372e0e650a4f91aed0058cb823f62146ccb5599c8d13372c300dea866b69fc".into(),
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encrypted_point: "7e05df9dd077ec21ed4bc45c9fe9e0a43d65fa4be540630de615ced5e95cf5c3003035eb713317237d7667feeeb64335525158f5f7411f67aca9645169ea554c".into(),
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}).unwrap();
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let mut batch = db.transaction();
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batch.put(None, &[7], &key);
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db.write(batch).unwrap();
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}
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// upgrade database
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let db = upgrade_db(db).unwrap();
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// check upgrade
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assert_eq!(db.get(None, DB_META_KEY_VERSION).unwrap().unwrap()[0], CURRENT_VERSION);
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let key = serde_json::from_slice::<CurrentSerializableDocumentKeyShare>(&db.get(None, &[7]).unwrap().map(|key| key.to_vec()).unwrap()).unwrap();
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assert_eq!(Public::default(), key.author.clone().into());
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assert_eq!(777, key.threshold);
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assert_eq!(vec![(
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"b486d3840218837b035c66196ecb15e6b067ca20101e11bd5e626288ab6806ecc70b8307012626bd512bad1559112d11d21025cef48cc7a1d2f3976da08f36c8".parse::<Public>().unwrap(),
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"281b6bf43cb86d0dc7b98e1b7def4a80f3ce16d28d2308f934f116767306f06c".parse::<Secret>().unwrap(),
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)], key.id_numbers.clone().into_iter().map(|(k, v)| (k.into(), v.into())).collect::<Vec<(Public, Secret)>>());
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assert_eq!("00125d85a05e5e63e214cb60fe63f132eec8a103aa29266b7e6e6c5b7597230b".parse::<Secret>().unwrap(), key.secret_share.into());
|
|
assert_eq!(Some("99e82b163b062d55a64085bacfd407bb55f194ba5fb7a1af9c34b84435455520f1372e0e650a4f91aed0058cb823f62146ccb5599c8d13372c300dea866b69fc".parse::<Public>().unwrap()), key.common_point.clone().map(Into::into));
|
|
assert_eq!(Some("7e05df9dd077ec21ed4bc45c9fe9e0a43d65fa4be540630de615ced5e95cf5c3003035eb713317237d7667feeeb64335525158f5f7411f67aca9645169ea554c".parse::<Public>().unwrap()), key.encrypted_point.clone().map(Into::into));
|
|
}
|
|
|
|
#[test]
|
|
fn upgrade_db_from_1() {
|
|
let db_path = RandomTempPath::create_dir();
|
|
let db = Database::open_default(db_path.as_str()).unwrap();
|
|
|
|
// prepare v1 database
|
|
{
|
|
let key = serde_json::to_vec(&SerializableDocumentKeyShareV1 {
|
|
author: "b486d3840218837b035c66196ecb15e6b067ca20101e11bd5e626288ab6806ecc70b8307012626bd512bad1559112d11d21025cef48cc7a1d2f3976da08f36c8".into(),
|
|
threshold: 777,
|
|
id_numbers: vec![(
|
|
"b486d3840218837b035c66196ecb15e6b067ca20101e11bd5e626288ab6806ecc70b8307012626bd512bad1559112d11d21025cef48cc7a1d2f3976da08f36c8".into(),
|
|
"281b6bf43cb86d0dc7b98e1b7def4a80f3ce16d28d2308f934f116767306f06c".parse::<Secret>().unwrap().into(),
|
|
)].into_iter().collect(),
|
|
secret_share: "00125d85a05e5e63e214cb60fe63f132eec8a103aa29266b7e6e6c5b7597230b".parse::<Secret>().unwrap().into(),
|
|
common_point: Some("99e82b163b062d55a64085bacfd407bb55f194ba5fb7a1af9c34b84435455520f1372e0e650a4f91aed0058cb823f62146ccb5599c8d13372c300dea866b69fc".into()),
|
|
encrypted_point: Some("7e05df9dd077ec21ed4bc45c9fe9e0a43d65fa4be540630de615ced5e95cf5c3003035eb713317237d7667feeeb64335525158f5f7411f67aca9645169ea554c".into()),
|
|
}).unwrap();
|
|
let mut batch = db.transaction();
|
|
batch.put(None, DB_META_KEY_VERSION, &[1]);
|
|
batch.put(None, &[7], &key);
|
|
db.write(batch).unwrap();
|
|
}
|
|
|
|
// upgrade database
|
|
let db = upgrade_db(db).unwrap();
|
|
|
|
// check upgrade
|
|
assert_eq!(db.get(None, DB_META_KEY_VERSION).unwrap().unwrap()[0], CURRENT_VERSION);
|
|
let key = serde_json::from_slice::<CurrentSerializableDocumentKeyShare>(&db.get(None, &[7]).unwrap().map(|key| key.to_vec()).unwrap()).unwrap();
|
|
assert_eq!(777, key.threshold);
|
|
assert_eq!(vec![(
|
|
"b486d3840218837b035c66196ecb15e6b067ca20101e11bd5e626288ab6806ecc70b8307012626bd512bad1559112d11d21025cef48cc7a1d2f3976da08f36c8".parse::<Public>().unwrap(),
|
|
"281b6bf43cb86d0dc7b98e1b7def4a80f3ce16d28d2308f934f116767306f06c".parse::<Secret>().unwrap(),
|
|
)], key.id_numbers.clone().into_iter().map(|(k, v)| (k.into(), v.into())).collect::<Vec<(Public, Secret)>>());
|
|
assert_eq!("00125d85a05e5e63e214cb60fe63f132eec8a103aa29266b7e6e6c5b7597230b".parse::<Secret>().unwrap(), key.secret_share.into());
|
|
assert_eq!(Some("99e82b163b062d55a64085bacfd407bb55f194ba5fb7a1af9c34b84435455520f1372e0e650a4f91aed0058cb823f62146ccb5599c8d13372c300dea866b69fc".parse::<Public>().unwrap()), key.common_point.clone().map(Into::into));
|
|
assert_eq!(Some("7e05df9dd077ec21ed4bc45c9fe9e0a43d65fa4be540630de615ced5e95cf5c3003035eb713317237d7667feeeb64335525158f5f7411f67aca9645169ea554c".parse::<Public>().unwrap()), key.encrypted_point.clone().map(Into::into));
|
|
assert_eq!(key.author, "b486d3840218837b035c66196ecb15e6b067ca20101e11bd5e626288ab6806ecc70b8307012626bd512bad1559112d11d21025cef48cc7a1d2f3976da08f36c8".into());
|
|
assert_eq!(key.polynom1, vec![]);
|
|
}
|
|
}
|