nautilus_cryptography/
providers.rs

1// -------------------------------------------------------------------------------------------------
2//  Copyright (C) 2015-2025 Posei Systems Pty Ltd. All rights reserved.
3//  https://poseitrader.io
4//
5//  Licensed under the GNU Lesser General Public License Version 3.0 (the "License");
6//  You may not use this file except in compliance with the License.
7//  You may obtain a copy of the License at https://www.gnu.org/licenses/lgpl-3.0.en.html
8//
9//  Unless required by applicable law or agreed to in writing, software
10//  distributed under the License is distributed on an "AS IS" BASIS,
11//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12//  See the License for the specific language governing permissions and
13//  limitations under the License.
14// -------------------------------------------------------------------------------------------------
15
16use std::sync::Once;
17
18use rustls::crypto::{CryptoProvider, aws_lc_rs};
19
20// Static flag to ensure the provider is installed only once
21static INSTALL_PROVIDER: Once = Once::new();
22
23/// Installs the AWS-LC cryptographic provider as the default for rustls.
24///
25/// This function ensures that the cryptographic provider is installed only once
26/// using a static guard. If no default provider is already set, it will install
27/// the AWS-LC provider and log the result.
28pub fn install_cryptographic_provider() {
29    INSTALL_PROVIDER.call_once(|| {
30        if CryptoProvider::get_default().is_none() {
31            tracing::debug!("Installing aws_lc_rs cryptographic provider");
32
33            match aws_lc_rs::default_provider().install_default() {
34                Ok(()) => tracing::debug!("Cryptographic provider installed successfully"),
35                Err(e) => tracing::debug!("Error installing cryptographic provider: {e:?}"),
36            }
37        }
38    });
39}
nautilus_cryptography/providers.rs

nautilus_cryptography/
providers.rs
