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// Copyright 2017-2018 int08h LLC
//
// Licensed 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.
extern crate hex;
extern crate log;
#[cfg(feature = "gcpkms")]
pub mod inner {
extern crate base64;
extern crate hyper;
extern crate hyper_rustls;
extern crate yup_oauth2 as oauth2;
extern crate google_cloudkms1 as cloudkms1;
use std::result::Result;
use std::default::Default;
use std::error::Error;
use std::fmt;
use std::fmt::Formatter;
use std::str::FromStr;
use self::oauth2::{service_account_key_from_file, ServiceAccountAccess, ServiceAccountKey};
use self::cloudkms1::CloudKMS;
use self::cloudkms1::{Result as CloudKmsResult, Error as CloudKmsError, EncryptRequest, DecryptRequest};
use self::hyper::net::HttpsConnector;
use self::hyper::status::StatusCode;
use self::hyper_rustls::TlsClient;
use kms::{EncryptedDEK, KmsError, KmsProvider, PlaintextDEK};
pub struct GcpKms {
key_resource_id: String,
service_account: ServiceAccountKey,
}
impl GcpKms {
pub fn from_resource_id(resource_id: &str) -> Result<Self, KmsError> {
let client_secret = oauth2::service_account_key_from_file(&"creds.json".to_string())
.unwrap();
Ok(GcpKms {
key_resource_id: resource_id.to_string(),
service_account: client_secret
})
}
}
impl KmsProvider for GcpKms {
fn encrypt_dek(&self, plaintext_dek: &PlaintextDEK) -> Result<EncryptedDEK, KmsError> {
let client1 = hyper::Client::with_connector(HttpsConnector::new(TlsClient::new()));
let access = oauth2::ServiceAccountAccess::new(self.service_account.clone(), client1);
let client2 = hyper::Client::with_connector(HttpsConnector::new(TlsClient::new()));
let hub = CloudKMS::new(client2, access);
let mut request = EncryptRequest::default();
request.plaintext = Some(base64::encode(plaintext_dek));
let result = hub
.projects()
.locations_key_rings_crypto_keys_encrypt(request, &self.key_resource_id)
.doit();
match result {
Ok((http_resp, enc_resp)) => {
if http_resp.status == StatusCode::Ok {
let ciphertext = enc_resp.ciphertext.unwrap();
let ct = base64::decode(&ciphertext)?;
Ok(ct)
} else {
Err(KmsError::OperationFailed(format!("{:?}", http_resp)))
}
}
Err(e) => Err(KmsError::OperationFailed(e.description().to_string()))
}
}
fn decrypt_dek(&self, encrypted_dek: &EncryptedDEK) -> Result<PlaintextDEK, KmsError> {
let client1 = hyper::Client::with_connector(HttpsConnector::new(TlsClient::new()));
let access = oauth2::ServiceAccountAccess::new(self.service_account.clone(), client1);
let client2 = hyper::Client::with_connector(HttpsConnector::new(TlsClient::new()));
let hub = CloudKMS::new(client2, access);
let mut request = DecryptRequest::default();
request.ciphertext = Some(base64::encode(encrypted_dek));
let result = hub
.projects()
.locations_key_rings_crypto_keys_decrypt(request, &self.key_resource_id)
.doit();
match result {
Ok((http_resp, enc_resp)) => {
if http_resp.status == StatusCode::Ok {
let plaintext = enc_resp.plaintext.unwrap();
let ct = base64::decode(&plaintext)?;
Ok(ct)
} else {
Err(KmsError::OperationFailed(format!("{:?}", http_resp)))
}
}
Err(e) => Err(KmsError::OperationFailed(e.description().to_string()))
}
}
}
}
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