aes

I want to write an AES encryption method that should be equivalent to mysql aes_encrypt . I try to write but it's not correct, because mysql is nor giving proper data. What should I do to get it correct? Cipher cipher = Cipher.getInstance("AES"); cipher.init(Cipher.ENCRYPT_MODE, keySpec); byte[] encryptedTextBytes = cipher.doFinal(message .getBytes("UTF-8")); String k = new String(encryptedTextBytes); System.out.println("KKKKK"+k); MySQL's implementation of AES gives headaches to a lot of people. It'a mainly because of how MySQL processes the encryption key. The encryption key gets broken into

TKIP： Temporal Key Integrity Protocol（暂时密钥集成协议）负责处理无线安全问题的加密部分，TKIP是包裹在已有WEP密码外围的一层“外壳”， 这种加密方式在尽可能使用WEP算法的同时消除了已知的WEP缺点，例如：WEP密码使用的密钥长度为40位和128位，40位的钥匙是非常容易破解的， 而且同一局域网内所有用户都共享同一个密钥，一个用户丢失钥匙将使整个网络不安全。而TKIP中密码使用的密钥长度为128位，这就解决了WEP密码使用 的密钥长度过短的问题。TKIP另一个重要特性就是变化每个数据包所使用的密钥，这就是它名称中“动态”的出处。密钥通过将多种因素混合在一起生成，包括 基本密钥（即TKIP中所谓的成对瞬时密钥）、发射站的MAC地址以及数据包的序列号。混合操作在设计上将对无线站和接入点的要求减少到最低程度，但仍具 有足够的密码强度，使它不能被轻易破译。WEP的另一个缺点就是“重放攻击（replay attacks）”，而利用TKIP传送的每一个数据包都具有独有的48位序列号，由于48位序列号需要数千年时间才会出现重复，因此没有人可以重放来自 无线连接的老数据包：由于序列号不正确，这些数据包将作为失序包被检测出来。 AES：Advanced Encryption Standard(高级加密标准)，是美国国家标准与技术研究所用于加密电子数据的规范

加密算法 对称加密算法（私钥算法） ①DES （Data Encryption Standard） DES（40 bit长度加密） DES（56 bit长度加密） 3DES （3x56=168加密长度） ②AES （Advanced Encryption Standard） AES 128 AES 192 AES 256 非对称加密算法（公钥算法） RSA HMAC（Hashed Message Authentication Code） MD5 (Message Digest 5) (128bit) SHA-1(160 bit) 来源： https://www.cnblogs.com/miaocongcong/p/11874705.html

基本概念 加密方式分为： AES(对称加密) 和 RSA(非对称加密) AES算法流程 发送方： 创建AES私钥，用口令对私钥加密 将加密后的私钥发送给接收方 用私钥加密明文，并将密文和加密后的私钥发给接收方 接收方： 解密这个私钥 用解密后的密钥把密文解密成明文 RSA算法流程 接收方： 创建RSA密钥对（公钥和私钥）公钥发给发送方，私钥存在接收方。 接收方用私钥对密文解密 发送方： 公钥对明文加密，将密文发给接收方 RSA+AES结合加密 接收方： 创建RSA密钥对（公钥、私钥）把公钥发给发送方，自己保存私钥 用RSA私钥解密加密后的AES密钥，并用AES密钥解密密文，得到明文 发送方： 创建AES密钥，并用AES加密明文，再用RSA公钥加密AES密钥，并把加密后的AES密钥和密文发送给接收方 Android RSA+AES加密过程 Android： 生成AES密钥，并用AES密钥对明文加密 使用RSA公钥将AES密钥(aesKey)加密成encryptAesKey，作为HTTP请求头 将AES加密明文后的密文（encryptData）作为请求体，将请求体和请求头一起发给sever sever： 生成RSA密钥对（公钥、私钥）,提供接口给客户端，发送公钥 获得AES加密后的 请求头（encryptAesKey） ，获得加密后的 请求体（encryptData）

I have been tasked with decrypting a file in Java that has been encrypted using the following criteria: AES encryption algorithm with 128-bit key, ECB mode and PKCS7 padding. The encrypted file format is: - first byte is hex 0x31 – specifying encryption method used (1 for AES) - followed by the encrypted bytes of the input file I must also download the file, so here is my attempt so far: The download code, I skip the first byte here as it is not required and is not encrypted: final String PATH = "/sdcard/" + IMEI + ".xml"; //put the downloaded file here try { URL url = new URL(context

I found a "lua aes" solution on the web a while ago. And have some concern about its safety. It states that: -- Do not use for real encryption, because the password is easily viewable while encrypting. It says this at its "file encryption test" script. My questions are: Why is that, how is it any different from encrypting a string and writing it to a file? How could it be viewable while encryption? Is it viewable after encryption too? Basically, Is it safe to use or not? Is there anyone who can confirm this who has used it? I mailed the original developer but the email address was invalid.

The PHP API I’m calling from within my iOS app requires the payload to be encrypted in a certain customised way. I’m having troubles replicating that approach in Objective-C, with RNCryptor. Here is the PHP code used to encrypt a string: function encrypt($string) { $key = 'some-random-key'; return base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, md5($key), $string, MCRYPT_MODE_CBC, md5(md5($key)))); } And this how I’m trying to achieve the same encryption result in Objective-C: + (NSData*)encryptData:(NSData*)sourceData { NSString *keyString = @"some-random-key"; NSData *key = [[keyString

I've built a CMS system to allow users to create and manage online forms on my client's intranet app. Of course some of the data handled by the forms may need to be encrypted e.g. if the system is used to build a form that handles salary specifics or whatever. So I'm using the AESManaged class to symmetrically encrypt this sort of data prior to it going into our application db. All is fine, but now, prior to release, I could do with a steer regarding the shared secret and salt . My original idea was to make a (dynamic) shared secret by combining the (GUID-based) ID of the Form containing the