RSA秘钥对在线生成：http://web.chacuo.net/netrsakeypair/
java的RSA加密解密工具：https://blog.csdn.net/weixin_44027481/article/details/119925513
注意，需要
<!--引入jsencrypt.js-->
<script src="https://cdn.bootcss.com/jsencrypt/3.0.0-beta.1/jsencrypt.js"></script>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>使用jsencrypt执行OpenSSL的RSA加密，解密</title>
</head>
<!--引入jsencrypt.js-->
<script src="https://cdn.bootcss.com/jsencrypt/3.0.0-beta.1/jsencrypt.js"></script>
<script type="text/javascript">
//公钥
var PUBLIC_KEY = 'MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC8HMr2CBpoZPm3t9tCVlrKtTmI4jNJc7/HhxjIEiDjC8czP4PV+44LjXvLYcSV0fwi6nE4LH2c5PBPEnPfqp0g8TZeX+bYGvd70cXee9d8wHgBqi4k0J0X33c0ZnW7JruftPyvJo9OelYSofBXQTcwI+3uIl/YvrgQRv6A5mW01QIDAQAB';
//私钥
var PRIVATE_KEY = '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';
//使用公钥加密
var encrypt = new JSEncrypt();
//encrypt.setPrivateKey('-----BEGIN RSA PRIVATE KEY-----'+PRIVATE_KEY+'-----END RSA PRIVATE KEY-----');
encrypt.setPublicKey('-----BEGIN PUBLIC KEY-----' + PUBLIC_KEY + '-----END PUBLIC KEY-----');
var str = {
"uid":"1223334",
"pwd":"asd"
}
var encrypted = encrypt.encrypt(JSON.stringify(str));
document.writeln('加密前数据:'+str);
document.writeln('加密后数据:'+encrypted);
console.log('加密前数据:%o', str);
console.log('加密后数据:%o', encrypted);
//使用私钥解密
var decrypt = new JSEncrypt();
//decrypt.setPublicKey('-----BEGIN PUBLIC KEY-----' + PUBLIC_KEY + '-----END PUBLIC KEY-----');
decrypt.setPrivateKey('-----BEGIN RSA PRIVATE KEY-----'+PRIVATE_KEY+'-----END RSA PRIVATE KEY-----');
var uncrypted = decrypt.decrypt(encrypted);
document.writeln('解密后数据:'+uncrypted);
console.log('解密后数据:%o', uncrypted);
</script>
</html>