encryption

问题 I have an old database and when I join the table of user I see "username"=>"Mark" "password"=>"db55668c3b3ea5877670599dce51abda" "encrypted_password"=>"1fd0eb3ad6e4d1229012bc5ab872b841b25b7930557e49ed3ec7f573b28157b8aed2bdd1e5d0c368752ed6034653bf47fc11cb6e5a83d599c8a9455666827e64" "password_salt"=>"gLwk7qWpxomnujSQyrKP" and other table nickAdmin : admin passAdmin : UG0EMA0iBzJaaQJjVHcFdVJrWSNRIQ== my question is What the type of each encryption and how I can Decode? thank you 回答1: Marks's

问题 I am doing encryption which is working good but with same method I am doing decryption I am getting blank string not getting decryption string. I am using method AES-256-ECB and key is hexadecimal so I pass as $key = pack('H*','xxxxxxxxxxxx'); Encryption is going correct but decryption is not working. Please help me what I am doing wrong. function encrypt(string $data, string $key, string $method): string { $ivSize = openssl_cipher_iv_length($method); $iv = openssl_random_pseudo_bytes($ivSize

问题 How can I remove the encryption property from a column in SQL Server 2016? I've enabled this feature using the Always Encrypted wizard in SQL Server Management Studio 2016, but I would like to remove the encryption from some columns I've added before. I wonder if the following 2 things are possible (and if so how?): Really undo the encryption using the certificate used for the encryption. Remove the encryption and leave the encrypted data in the cells. 回答1: The answer for question 1) is to

问题 I have a very large text file on disk. Assume it is 1 GB or more. Also assume the data in this file has a \n character every 120 characters. I am using python-gnupg to encrypt on this file. Since the file is so large, I cannot read the entire file into memory at one time. However, the gnupg.encrypt() method that I'm using requires that I send in all the data at once -- not in chunks. So how can I encrypt the file without using up all my system memory? Here is some sample code: import gnupg

问题 We have an enterprise mobile app that ships with an encrypted private key. We intend to provide users with the passphrase in order to use that private key, which will then allow them to communicate with a backend server. I've previously set this up using Python or C# but cannot figure out how to do this in Swift or Objective C. I've adapted some of this from this stack overflow question: Encrypt using RSA Certificate in Swift static func getCertificate(from certificate: String?, usingPhrase

问题 This problem is related to TOTP as specified in RFC6238 here: https://tools.ietf.org/html/rfc6238#section-1.2. I am to implement the RFC6238 to generate a 10-digit TOTP password, which will be used in a POST request later on. The sample input and output for the TOTP is supposed to be like this: Sample Input: Shared key: "ninja@example.comHDECHALLENGE003" (without double quotes) Hash function used: HMAC-SHA-512 T0 = 0, Timestep = 30 seconds (as per specified in RFC6238) Expected TOTP of 10

问题 I am an recent graduate in pure mathematics who only has taken few basic programming courses. I am doing an internship and I have an internal data analysis project. I have to analyze the internal PDFs of the last years. The PDFs are "secured." In other words, they are encrypted. We do not have PDF passwords, even more, we are not sure if passwords exist. But, we have all these documents and we can read them manually. We can print them as well. The goal is to read them with Python because is

问题 I am getting the following error message when I convert from .net 4.5 to .net core 2. The code is exactly the same. I have seen a few posts but none have solve this error. I am using RijndaelManaged encryption. Specified padding mode is not valid for this algorithm. at Internal.Cryptography.UniversalCryptoDecryptor.DepadBlock(Byte[] block, Int32 offset, Int32 count) at Internal.Cryptography.UniversalCryptoDecryptor.UncheckedTransformFinalBlock(Byte[] inputBuffer, Int32 inputOffset, Int32

问题 I am getting the following error message when I convert from .net 4.5 to .net core 2. The code is exactly the same. I have seen a few posts but none have solve this error. I am using RijndaelManaged encryption. Specified padding mode is not valid for this algorithm. at Internal.Cryptography.UniversalCryptoDecryptor.DepadBlock(Byte[] block, Int32 offset, Int32 count) at Internal.Cryptography.UniversalCryptoDecryptor.UncheckedTransformFinalBlock(Byte[] inputBuffer, Int32 inputOffset, Int32

问题 I am trying to encrypt a video clip using dart. I have tested this java code https://stackoverflow.com/a/9496626/8511016 and would like to do the same but using dart. 回答1: Here is the solution that I found. Hope it helps. Remember to add the package encryption package to pubspec.yaml import 'dart:convert'; import 'dart:io'; import 'package:encrypt/encrypt.dart'; main() { perfomEncryptionTasks(); } perfomEncryptionTasks() async { await encryptFile(); await decryptFile(); } encryptFile() async