在C#中,SecretKeySpec是Java中SecretKey的C#等效类。它用于表示对称密钥,例如AES、DES等。以下是一些SecretKeySpec类库的使用技巧:
byte[] keyBytes = new byte[16]; // 128位密钥
new Random().NextBytes(keyBytes);
SecretKeySpec keySpec = new SecretKeySpec(keyBytes, "AES");
byte[] keyBytes = keySpec.getEncoded();
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, keySpec);
byte[] encryptedData = cipher.doFinal(plainText.getBytes());
byte[] data = "Hello, world!".getBytes();
Signature signature = Signature.getInstance("HmacSHA256");
signature.initSign(keySpec);
signature.update(data);
byte[] signatureBytes = signature.sign();
File.WriteAllBytes("key.dat", keySpec.getEncoded());
从文件中加载密钥:
byte[] keyBytes = File.ReadAllBytes("key.dat");
SecretKeySpec keySpec = new SecretKeySpec(keyBytes, "AES");
这些是SecretKeySpec类库的一些常见使用技巧,可以根据具体需求进行扩展和修改。