52 lines
1.8 KiB
Rust
52 lines
1.8 KiB
Rust
// trifid-api, an open source reimplementation of the Defined Networking nebula management server.
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// Copyright (C) 2023 c0repwn3r
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//
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// This program 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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//
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// This program 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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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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use crate::config::TrifidConfig;
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use aes_gcm::aead::{Aead, Payload};
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use aes_gcm::{Aes256Gcm, KeyInit, Nonce};
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use rand::Rng;
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use std::error::Error;
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use trifid_pki::rand_core::OsRng;
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pub fn get_cipher_from_config(config: &TrifidConfig) -> Result<Aes256Gcm, Box<dyn Error>> {
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let key_slice = hex::decode(&config.crypto.data_encryption_key)?;
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Ok(Aes256Gcm::new_from_slice(&key_slice)?)
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}
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pub fn encrypt_with_nonce(
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plaintext: &[u8],
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nonce: [u8; 12],
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cipher: &Aes256Gcm,
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) -> Result<Vec<u8>, aes_gcm::Error> {
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let nonce = Nonce::from_slice(&nonce);
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let ciphertext = cipher.encrypt(nonce, plaintext)?;
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Ok(ciphertext)
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}
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pub fn decrypt_with_nonce(
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ciphertext: &[u8],
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nonce: [u8; 12],
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cipher: &Aes256Gcm,
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) -> Result<Vec<u8>, aes_gcm::Error> {
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let nonce = Nonce::from_slice(&nonce);
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let plaintext = cipher.decrypt(nonce, Payload::from(ciphertext))?;
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Ok(plaintext)
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}
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pub fn generate_random_iv() -> [u8; 12] {
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OsRng.gen()
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}
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