des

问题 Trying to create java class which will encrypt and decrypt as like C# code in below. Below is my code for C#, I need to convert it to Java. Can someone help me how to do it? I've been doing this for almost 2 days yet can't find any solutions on how to convert it. I am new to crypto. Note - It seems C# code used ACME libraries. But in my java, i should not use ACME jar files. public static string EncryptBase64(string key, string clearText) { if (key.Length > 8) key = key.Substring(0, 8); byte[

问题 I'm looking for a very simple crypt / decrypt method. I will be using always the same static key. I'm aware of the risks of this approach. Currently I'm using the following code but it does not generate the same result after crypting and decripting the same string (there is some garbage in the middle of the string). public static string Crypt(this string text) { string result = null; if (!String.IsNullOrEmpty(text)) { byte[] plaintextBytes = Encoding.Unicode.GetBytes(text); SymmetricAlgorithm

问题 I am trying to build a DES code using my humble python knowledge: I get the following error: " xor_lf = l1 ^ Bn TypeError: bitarray object expected for bitwise operation" Do I need to convert Bn or l1 to bitarray? And how? from bitarray import bitarray iptable=[57, 49, 41, 33, 25, 17, 9, 1, 59, 51, 43, 35, 27, 19, 11, 3, 61, 53, 45, 37, 29, 21, 13, 5, 63, 55, 47, 39, 31, 23, 15, 7, 56, 48, 40, 32, 24, 16, 8, 0, 58, 50, 42, 34, 26, 18, 10, 2, 60, 52, 44, 36, 28, 20, 12, 4, 62, 54, 46, 38, 30,

问题 Is it in any way possible to process at least 1 DShow video project on multiple machines in parallel at the same time for faster rendering or just for fun? In any language? With help of any program? 回答1: The short answer is yes, but it's not a very practical solution Lets say you did manage to create a system that broke a video up across machines for distributed decoding. You first would have to be careful on how you did "break up" the video. You must always start at keyframe and ending right

问题 In my site i have a link Forgot Password when i click on this link a page will come so we fill emailId and send mail to particular gmailid(in this mail we have to generate a link). when we have click on generated link page open for reset password(like new password ar confirm password). My problem is that i am successfully able to send mail but when click on link not able to find emailId for reset password. Gmail Link : http://127.0.0.1:8888/abc.html?gwt.codesvr=127.0.0.1:9997#forgetPassword

问题 Iam using TripleDes /cbc/pkcs7padding in C#.net to encrypt file. and i need to decrypt in java.In java am using DESede/CBC/PKcs5padding But the file is decrypted,but corrupted. *In java is it possible to use pkcs7padding? or any other solution to decrypt the file in java with encrypted using pkcs7 padding C# code namespace EncryptEpubFiles { public class Encryptor { public static bool EncryptBook(FileInfo fileToEncrypt,string outPathWithoutExtension,string keyString) { try { byte[]

问题 I'm trying to decrypt Bloomberg data files that I know are DES encrypted. FileName = 'comdty_option_namr.out.gz.enc' What is the right order to do things: Open the file and decompress and then decrypt or vice-versa? 回答1: Well, it all depends on the way the file was transformed, and there are two possible ways (in your case is #1): first create the zip, then encrypt the zip first encrypt the file, then zip it The extension of the file tells you the order of operations, by reading them from

问题 Does anyone know where I can find test vectors for every component of 64bit DES algorithm(Key schedul, cipher function, etc)? For example I want to test 64bits key generation and to ckeck all 16 key generated. I am implementing the algorithm in VHDL so I need to check the comonents. My implementation is based on this paper. Thanks 回答1: Originally there was NBS Special Publication 500-20, revised in 1980, Validating the Correctness of Hardware Implementations of the NBS Data Encryption

问题 I'm replacing PKCS7Padding padding with PKCS5Padding for my AES encryptions. Can I use PKCS5Padding padding algorithm while decryption for already encrypted data using PKCS7Padding? I tried using a sample program on local and somehow it works and didn't give any error. Just want to ensure if we need any sort of Migration for all the existing records. For all the existing records, Do I need to decrypt first using PKCS7Padding and then again encrypt using PKCS5Padding and store it back in the

问题 I know that DES has a key length of 56, but what does the ede mean and does it effect the key length? Openssl des-ede-cbc 回答1: Triple DES, DES-EDE or TDEA (formally speaking) can be used with no less than 3 key sizes. The most logical form uses 3 separate keys for each of the phases (Encrypt, Decrypt and then Encrypt again, which is the meaning of EDE). It has a key size of 3 times 56 bits or 168 bits, but those are usually encoded with parity bits (the least significant bit of each byte),