public static String encrypt(String content, String password) {
try {
Cipher cipher = Cipher.getInstance(DEFAULT_CIPHER_ALGORITHM);// 创建密码器
byte[] byteContent = content.getBytes("utf-8");
cipher.init(Cipher.ENCRYPT_MODE, getSecretKey(password));// 初始化为加密模式的密码器
byte[] result = cipher.doFinal(byteContent);// 加密
return Base64.encodeBase64String(result);//通过Base64转码返回
} catch (Exception ex) {
}
return null;
}
private static SecretKeySpec getSecretKey(final String password) {
//返回生成指定算法密钥生成器的 KeyGenerator 对象
KeyGenerator kg = null;
try {
kg = KeyGenerator.getInstance(KEY_ALGORITHM);
//AES 要求密钥长度为 128
kg.init(128, new SecureRandom(password.getBytes()));
//生成一个密钥
SecretKey secretKey = kg.generateKey();
return new SecretKeySpec(secretKey.getEncoded(), KEY_ALGORITHM);// 转换为AES专用密钥
} catch (NoSuchAlgorithmException ex) {
}
return null;
}
