aes | 易学教程

AES decryption error “ The input data is not a complete block.” Error vb.net

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问题 I keep getting this "The input data is not a complete block." error while decrypting. The function successfully encrypts plain text and puts the IV in a textbox. I am using the encrypted data and the IV from text to decrypt the original data but I keep getting the error. I have no idea where I have gone wrong. Heres my code Imports System.IO 'Import file I/O tools Imports System.Security.Cryptography 'Import encryption functionality Imports System.Text 'Import text based processing tools`

Implementing SQL AES ENCRYPTION into SQLite using PHP

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问题 is it possible to implement SQL AES_ENCRYPT/AES_DECRYPT into SQLite using PHP ? For example I have a PHP Code: $SQL = "INSERT INTO parent (Request, Column1, Column2) VALUES ('$Request',AES_ENCRYPT('$Col1','$key'),AES_ENCRYPT('$Col2','$key'))"; and this query works in SQL, but is it possible to use this same query in SQLite? 回答1: I'd say you have 2 options : encrypt your values at the PHP level and store them as BLOBs or base64 strings encrypt the whole database executing the following command

AES Python encryption and Ruby encryption - different behaviour?

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问题 From this site I have this code snippet: >>> from Crypto.Cipher import AES >>> obj = AES.new('This is a key123', AES.MODE_CBC, 'This is an IV456') >>> message = "The answer is no" >>> ciphertext = obj.encrypt(message) >>> list(bytearray(ciphertext)) [214, 131, 141, 100, 33, 86, 84, 146, 170, 96, 65, 5, 224, 155, 139, 241] When I take this array and turn it into a String in Ruby and proceed to decrypt it, an error occurs: >> require 'openssl' => true >> obj2 = OpenSSL::Cipher::Cipher.new("AES

Java AES 256 encryption

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问题 I have the below java code to encrypt a string which uses a 64 character key. My question is will this be a AES-256 encryption? String keyString = "C0BAE23DF8B51807B3E17D21925FADF273A70181E1D81B8EDE6C76A5C1F1716E"; byte[] keyValue = hexStringToByte(keyString); Key key = new SecretKeySpec(keyValue, "AES"); Cipher c1 = Cipher.getInstance("AES"); c1.init(Cipher.ENCRYPT_MODE, key); String data = "Some data to encrypt"; byte[] encVal = c1.doFinal(data.getBytes()); String encryptedValue = Base64

AES-256-CBC Mcrypt-PHP decrypt and Crypto-JS Encrypt

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问题 I am trying to encrypt in Javascript with CryptoJS and decrypt in PHP. The JS code is: var salt = CryptoJS.lib.WordArray.random(128/8); var key256Bits500Iterations = CryptoJS.PBKDF2("Secret Passphrase", salt, { keySize: 256/32, iterations: 500 }); var iv = CryptoJS.enc.Hex.parse('101112131415161718191a1b1c1d1e1f'); // just chosen for an example, usually random as well encrypted = CryptoJS.AES.encrypt("Message", key512Bits1000Iterations, { iv: iv }); var data_base64 = crypted.ciphertext

java封装AES加密算法

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在实际coding中会常常遇到往数据库存入密码时加密。URL传參时的加密。由此简单封装了下java中的AES加密算法。 0、import类 import java.security.SecureRandom; import javax.crypto.Cipher; import javax.crypto.KeyGenerator; import javax.crypto.SecretKey; import javax.crypto.spec.SecretKeySpec; import org.apache.axis.encoding.Base64; //非必须 1、加密接口 /** * 加密 * @param content 待加密内容 * @param password 加密密钥 * @return */ public static byte[] encrypt(String content, String password) { try { KeyGenerator kgen = KeyGenerator.getInstance("AES"); kgen.init(128, new SecureRandom(password.getBytes())); SecretKey secretKey = kgen.generateKey(); byte[] enCodeFormat =

C#编程之AES加密（二）

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上一章我们举例了官方给出的一个AES加密例程，我们从官方的例程可以看出，这例程对文档类型的文件进行加密是比较合适的。但有时候，我们需要对一小段数据进行加密，例如通过序列号加密生成产品加密后的序列号，用于遥控与主机间的RF通信，这就是纯粹的16进制数进行加密了。比如汽车遥控，家居遥控等等，这些产品序列号是对所有用户透明的，如果不进行加密，通信信息很容易被拦截。为解决这一问题，我们这里介绍一下aes128加密16字节序列号： using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Security.Cryptography; namespace aesDemo { class Program { static void Main(string[] args) { var keyBuf = "1111111111111111"; var valueBuf = Encoding.UTF8.GetBytes("2222222222222222"); using(var aes=new RijndaelManaged()) { aes.IV = Encoding.UTF8.GetBytes

How to decompress an AES-256 encrypted Zip file?

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问题 I am looking for a compression library to use in iPhone application supports decompressing AES 256-bit archives built in Winzip compression utility. Thanks. 回答1: zlib is part of the iPhone sdk and is a well established and free option. If you're using Xcode you can add it to your project by: Right clicking on the Frameworks folder in your project (you can do it elsewhere but that's likely where you want to put it) Select add file Select existing frameworks Select libz.1.2.3.dylib 回答2: Thank

How do I properly use the “PBEWithHmacSHA512AndAES_256” algorithm?

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问题 I'm doing some Java encryption, and cannot figure out a way to properly use the the PBEWithHmacSHA512AndAES_256 algorithm. Encryption seems to work fine, but I am unable to properly initialize a decryption cipher. Below is a short program that demonstrates the issue. In particular, see the "PROBLEM" comment. Note: I have seen this very helpful answer, and I can get things to work using that scheme, but I'm curious to know what I'm doing wrong here. import java.nio.charset.StandardCharsets;

Breaking AES encryption using decrypted data

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问题 After a discussion about encryption, a friend of mine challenged me to crack a file he encrypted using AES with a 128bit key. I know the file was originally a GIF image, so it should start with 'GIF8'. I'm wondering if it is possible to derive the password from this knowledge in a reasonable time (ie. a week or less). Stealing the key in any way other than analyzing the encrypted file is not possible, as it defeats the point of the challenge. If so, pointers would be welcome. I failed to find