弱加密-修复建议

在安全性要求较高的系统中，建议应使用安全的加密算法（如AES、RSA)对敏感数据进行加密。

BufferedReader bufread2 = null;
InputStreamReader inread2 = null;
try {
    inread2 = new InputStreamReader(System.in);
    bufread2 = new BufferedReader(inread2);
    String str = bufread2.readLine();
    /* FIX: Secure cryptographic algorithm (AES) */
    Cipher aes = Cipher.getInstance("AES");
    KeyGenerator kg = KeyGenerator.getInstance("AES");
    kg.init(128);
    SecretKey key = kg.generateKey();
    aes.init(Cipher.ENCRYPT_MODE, key);
    byte[] enc_str = aes.doFinal(str.getBytes());
    IO.writeLine(IO.toHex(enc_str));
} catch(IOException e) {
    log_gsnk.warning("Error reading from console");
} finally{
    ...
}