> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/zh/password-attacks/brute-force-openssh-.enc.md).
# 加密 OpenSSH 密钥破解
> 该 **.enc** 扩展名通常表示一个 **加密文件** （加密的）文件。它用于表示文件内容受数据保护算法保护，使得在没有代码或正确密码的情况下数据不可读。这些文件可能包含不同类型的数据（文本、图像、视频等），并用于保护敏感信息。
该 `.enc` 文件使用一种 **AES-256-CBC** 算法并编码为 **Base64**.
**步骤 1：Base64 解码**
```bash
cat .drupal.txt.enc | base64 -d > file_decoded.enc
```
**步骤 2：使用 OpenSSL 解密**
要解密该文件，我们需要一个密码。执行以下命令尝试手动解密：
```bash
openssl enc -aes-256-cbc -d -in .drupal.txt.enc -out .drupal.txt -base64
```
**步骤 3：暴力破解自动化脚本**
我们使用一个 Bash 脚本来测试一组密码（例如： `rockyou.txt`).
```bash
#!/bin/bash
function ctrl_c(){
echo -e "/n/n[!] 正在退出.../n"
tput cnorm; exit 1
}
# Ctrl+C
trap ctrl_c INT
tput civis
for password in $(cat /usr/share/wordlists/rockyou.txt); do
openssl aes-256-cbc -d -in drupal.enc -out drupal.decrypted -pass pass:$password &>/dev/null
if [ "$(echo $?)" == "0" ]; then
echo -e "/n[+] 密码是：$password/n"
exit 0
fi
done; tput cnorm
```
**结果：**
找到的密码是： **friends**
#### **解密后的消息**
解密后的文件包含一个新密码：
```bash
openssl enc -aes-256-cbc -d -in .drupal.txt.enc -out .drupal.txt -base64
friends
```
* **PencilKeyboardScanner123**
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