aes加密

Cube³

于 2021-11-30 11:02:04 发布

阅读量161

点赞数

分类专栏： java 文章标签： java

本文链接：https://blog.youkuaiyun.com/qq_41646841/article/details/121627846

版权

java 专栏收录该内容

3 篇文章

订阅专栏

public class BrAESEncrypt {
    private static final String encode = "utf-8";

    public static String aesEncrypt(String content, String pwdKey) {
        if (StringUtils.isBlank(content) || StringUtils.isBlank(pwdKey)) {
            throw new IllegalArgumentException("参数不合法");
        }
        try {
            SecretKeySpec key = sha1PRNG(pwdKey);
            Cipher cipher = Cipher.getInstance("AES");
            byte[] byteContent = content.getBytes(encode);
            cipher.init(Cipher.ENCRYPT_MODE, key);
            byte[] result = cipher.doFinal(byteContent);
            return encodeBase64URLSafeString(result);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    public static SecretKeySpec sha1PRNG(String pwdKey) throws Exception{
        KeyGenerator kgen = KeyGenerator.getInstance("AES");
        SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG");
        secureRandom.setSeed(pwdKey.getBytes());
        kgen.init(128, secureRandom);

        SecretKey secretKey = kgen.generateKey();
        byte[] enCodeFormat = secretKey.getEncoded();
        SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");
        return key;
    }

    public static String encodeBase64URLSafeString(byte[] result){
        return Base64.encodeBase64URLSafeString(result);
    }
}