AES-CBC使用不正确

Question

我正在尝试通过openssl进行AES-CBC密码和解密，但是，我无法获得正确的输出。请建议我。谢谢。

密

CLR; MSG_CIPHERED_HEX =＆＃34; 920e5af8b78702c778a919f7969a1f8cba578f11693673035213daf02500c50a＆＃34; IV =＆＃34; 00000000000000000000000000000000＆＃34; KEY =＃＆34; 00000000000000000000000000000000＆＃34; echo -n＆＃34; $ MSG_CIPHERED_HEX＆＃34; | xxd -r -p | openssl enc -aes-128-cbc -K $ KEY -iv $ IV | xxd -p | tr -d＆＃39; \ n＆＃39;

解码

CLR; MSG_CIPHERED_HEX =＆＃34; 734563526574204d6553734167452030300a0e0e0e0e0e0e0e0e0e0e0e0e0e0e＆＃34; echo $ MSG_CIPHERED_HEX MSG_ASCII = echo $MSG_HEX | xxd -p -r | tr -d '\n'; echo $ MSG_ASCII＆gt; tmp.ciphered.file.ascii; openssl enc -d -aes-128-cbc -K $ KEY -iv $ IV -in tmp.ciphered.file.ascii -out out.txt cat out.txt | xxd -p＃| tr -d＆＃39; \ n＆＃39; rm -rf tmp.ciphered.file.ascii out.txt

似乎存在数据格式问题： $ #decipher MSG_CIPHERED_HEX =＆＃34; 920e5af8b78702c778a919f7969a1f8cba578f11693673035213daf02500c50a＆＃34; IV =＆＃34; 00000000000000000000000000000000＆＃34; KEY =＃＆34; 00000000000000000000000000000000＆＃34; echo -n＆＃34; $ MSG_CIPHERED_HEX＆＃34; | xxd -r -p | openssl enc -d -aes-128-cbc -K $ KEY -iv $ IV | xxd -p | tr -d＆＃39; \ n＆＃39;

答： 734563526574204d6553734167452030300a（截断）

$ #cipher MSG_CIPHERED_HEX =＆＃34; 920e5af8b78702c778a919f7969a1f8cba578f11693673035213daf02500c50a＆＃34; IV =＆＃34; 00000000000000000000000000000000＆＃34; KEY =＃＆34; 00000000000000000000000000000000＆＃34; echo -n＆＃34; $ MSG_CIPHERED_HEX＆＃34; | xxd -r -p | openssl enc -aes-128-cbc -K $ KEY -iv $ IV | xxd -p | tr -d＆＃39; \ n＆＃39;

答： 236999001256bd4131dffa3417c29bfc597a43f6bde387ba0e42da86e67cfff42890e4f6e84c0e70753a9db754df996e

Answer 1

use std::thread; use std::cmp::max; pub fn max_length(input: &[&str], workers: usize) -> usize { let mut result = 0; let max_lines_per_worker = (input.len() as f32 / workers as f32).ceil(); let mut handles = Vec::new(); for assigned_lines in input.chunks(max_lines_per_worker as usize) { let handle = thread::spawn(move || { let mut count = 0; for line in assigned_lines { count = max(count, line.len()) } count }); handles.push(handle); } for handle in handles { if let Ok(count) = handle.join() { result = max(result, count); } } result } fn main() { println!("{:?}", max_length(&LINES, 3)); } const LINES: [&'static str; 4] = ["abc", "123", "qwerty", "zxcvbnm"]; 是14个字节的填充。如果在解密时指定填充，它将自动删除。

请参阅PKCS7 padding。