rust des3加解密
时间: 2024-06-01 09:06:55 浏览: 350
Rust是一种系统级编程语言,具有高性能和内存安全的特性。DES3是一种对称加密算法,通过对数据进行三次DES加密来增强安全性。在Rust中,可以使用现有的DES3库来进行加解密操作。其中,rust-crypto库是一个常用的加密库,提供了DES3算法的支持。
使用rust-crypto库中的DES3算法进行加解密需要进行以下步骤:
1. 导入rust-crypto库:
```rust
extern crate crypto;
```
2. 使用DES3算法进行加密:
```rust
use crypto::blockmodes::{BlockMode, Cbc};
use crypto::des::{self, BlockCipher};
use crypto::symmetriccipher::{Encryptor, Decryptor};
fn encrypt(plaintext: &[u8], key: &[u8], iv: &[u8]) -> Vec<u8> {
let mut buffer = [0; 8];
let mut encryptor = des::EcbEncryptor::new(des::DesEde3, key, blockmodes::NoPadding);
let mut cipher_text = Vec::new();
let mut previous_cipher_text = iv.to_vec();
for chunk in plaintext.chunks(8) {
buffer.copy_from_slice(chunk);
buffer = xor(&buffer, &previous_cipher_text);
encryptor.encrypt_block(&mut buffer);
previous_cipher_text = buffer.to_vec();
cipher_text.extend_from_slice(&buffer);
}
cipher_text
}
```
3. 使用DES3算法进行解密:
```rust
fn decrypt(ciphertext: &[u8], key: &[u8], iv: &[u8]) -> Vec<u8> {
let mut buffer = [0; 8];
let mut decryptor = des::EcbDecryptor::new(des::DesEde3, key, blockmodes::NoPadding);
let mut plaintext = Vec::new();
let mut previous_cipher_text = iv.to_vec();
for chunk in ciphertext.chunks(8) {
buffer.copy_from_slice(chunk);
decryptor.decrypt_block(&mut buffer);
buffer = xor(&buffer, &previous_cipher_text);
previous_cipher_text.copy_from_slice(chunk);
plaintext.extend_from_slice(&buffer);
}
plaintext
}
fn xor(lhs: &[u8], rhs: &[u8]) -> [u8; 8] {
let mut result = [0; 8];
for i in 0..8 {
result[i] = lhs[i] ^ rhs[i];
}
result
}
```
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