using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
namespace aes
{
internal class Program
{
static string Key = "b42e5+YWwQ6Yv/x2usUC3y7W67j/JtFsPYIrM+a8c3s=";
static Dictionary<string, string[]> cryptText = new Dictionary<string, string[]>();
static Dictionary<string, string[]> IV = new Dictionary<string, string[]>();
static string[] dd = { "Saturnus", "Thunor", "Týr", "Máni", "Wōden", "Frigg", "Sól" };
static void Init()
{
InitSaturnus();
InitThunor();
InitTýr();
InitMáni();
InitWōden();
InitFrigg();
InitSól();
}
static void InitSaturnus()
{
var cryptTextList = new List<string>() {
"U2FsdGVkX1+1O+ZmIgttJH8=",
"U2FsdGVkX1+SrIZIFMDVW2E=",
"U2FsdGVkX18JRzfoygn2Y20=",
"U2FsdGVkX18GDhU6ud+3DcQ=",
"U2FsdGVkX1/n51zyK28c4GI=",
"U2FsdGVkX18ugDFDV5lkglE="
};
cryptText.Add(dd[0], cryptTextList.ToArray());
var IVList = new List<string>()
{
"xZAdKng0U5d82Np4PZsPww==",
"YHVny/woeNDh9DpM94BBOQ==",
"Muf/Frv5oLFRt6SyAiA6rQ==",
"ehr7Twl2OF1fIJBKPbmcMA==",
"lbc3yR4IWHSuZdbib3QdiA==",
"b2Hi5VfTA6Q6Rsz2zHAvuA=="
};
IV.Add(dd[0], IVList.ToArray());
}
static void InitThunor()
{
var cryptTextList = new List<string>() {
"U2FsdGVkX19rsWv2JfYRRb0=",
"U2FsdGVkX1+4rdZjmR3tgko=",
"U2FsdGVkX18ocJyAnLuozNE=",
"U2FsdGVkX1/AOyr4suOc4MQ=",
"U2FsdGVkX1+jD8DWwqTE910=",
"U2FsdGVkX1/+ncfXosXHwKY="
};
cryptText.Add(dd[1], cryptTextList.ToArray());
var IVList = new List<string>()
{
"MBc4iLpcZDrfSjeqJJmLEA==",
"fKwuELhrHqQBeaIi2R+b8A==",
"lHr6MzT0fYzqArra4GYm+g==",
"AZkW78OLribXIy+ApGJQgA==",
"WUxVtwiogwBgphfgHKwDzA==",
"zoDZNgmPTlEjZdXdpBM8tA=="
};
IV.Add(dd[1], IVList.ToArray());
}
static void InitTýr()
{
var cryptTextList = new List<string>() {
"U2FsdGVkX1/4DZqbUtYRZx8=",
"U2FsdGVkX19czPjq8+/8UsE=",
"U2FsdGVkX1/6ZfI36gjoLA8=",
"U2FsdGVkX18V5valcsk1CsQ=",
"U2FsdGVkX1+xG6R0mlCkPTE=",
"U2FsdGVkX18g2+TuT4brgOk="
};
cryptText.Add(dd[2], cryptTextList.ToArray());
var IVList = new List<string>()
{
"m0L/fmD3/jbh0AqJk71ehg==",
"NnBKYEFiiAHdovEgMw7bNg==",
"n+/VrL4x4OrWjJGVfDUSsw==",
"70x6io7OfXVBss8yP1D1tg==",
"VzBgGklGo66w7QEAZa0GAw==",
"sDwVmAR6JW/kEstlwZUdZg=="
};
IV.Add(dd[2], IVList.ToArray());
}
static void InitMáni()
{
var cryptTextList = new List<string>() {
"U2FsdGVkX19H6fCgY8RPxSQ=",
"U2FsdGVkX1968V7WtkgBfrU=",
"U2FsdGVkX1/8j4E7M4sVoog=",
"U2FsdGVkX1/f6pEN6sJBUvQ=",
"U2FsdGVkX1/gG/GRZhjmwYs=",
"U2FsdGVkX19TsTlfFVUGj8Q="
};
cryptText.Add(dd[3], cryptTextList.ToArray());
var IVList = new List<string>()
{
"IuPtED6ZqY5x7ZJaZmhxsQ==",
"2OiKS7E+SsE1I1SUX059qA==",
"yk6DUFyg/zACWi8HIm5nNA==",
"Iga0n7QFjo2cd9yqs3/HWA==",
"jDz4j363OvNa5RCNtySr/g==",
"vaukQua5jx7mOF5g+b76/w=="
};
IV.Add(dd[3], IVList.ToArray());
}
static void InitWōden()
{
var cryptTextList = new List<string>() {
"U2FsdGVkX1+KdFdcb3NqgaY=",
"U2FsdGVkX18Br8lgEsFjmBA=",
"U2FsdGVkX18vDxlTRm4Z9Js=",
"U2FsdGVkX18aHNvqpLGmGpA=",
"U2FsdGVkX18RLezNkG0dApg=",
"U2FsdGVkX1/8/4oz1uhWaA0="
};
cryptText.Add(dd[4], cryptTextList.ToArray());
var IVList = new List<string>()
{
"HpYBR5mVqVni9FsHL5GrVA==",
"l02UrBF0ph2N4Wmc1M/GFg==",
"BEPnzwQ0d5zNLwzwnpAqBA==",
"j/zJXrMeRmQ1O5Knd7sBoA==",
"dLCct/3j4Ak04QY2nM7R2Q==",
"jUFSaIL5mvFZP7tSCTP7gA=="
};
IV.Add(dd[4], IVList.ToArray());
}
static void InitFrigg()
{
var cryptTextList = new List<string>() {
"U2FsdGVkX1/2U8dtdmiKKU8=",
"U2FsdGVkX1+uXz+T4kGeVa0=",
"U2FsdGVkX19ohp3Vz5Si20Q=",
"U2FsdGVkX1/2B4XpM0Q4P3M=",
"U2FsdGVkX1/wxs+veYvKbZw=",
"U2FsdGVkX18i+bG49eHbg80="
};
cryptText.Add(dd[5], cryptTextList.ToArray());
var IVList = new List<string>()
{
"bfpTEz7mUsflRQ4S85YYNg==",
"tq0zRJ5UjEOTJ0boW7AsfA==",
"6bMmrq0gGLklZm7z7gt2BA==",
"YIXmk0MCO9bTt/4v4kzP2A==",
"L3YPIZcP7RXsFVJziGs5aw==",
"du4UozF2bnRz/jyVu1Ozxw=="
};
IV.Add(dd[5], IVList.ToArray());
}
static void InitSól()
{
var cryptTextList = new List<string>() {
"U2FsdGVkX19Br5pVu4AtRtg=",
"U2FsdGVkX19C3HWWQ1q6VxE=",
"U2FsdGVkX1/K7FjQ5Y9rVZg=",
"U2FsdGVkX19dnTyHDgfMbUg=",
"U2FsdGVkX1+vSyglrNnpNpE=",
"U2FsdGVkX19CKMQX6AF8Qbk="
};
cryptText.Add(dd[6], cryptTextList.ToArray());
var IVList = new List<string>()
{
"8h2gh5U8SfNNT8TC2zRkMw==",
"DphXvg2uMt56twAbzgp9DQ==",
"nxyU8KveOuot2GA1q9P1+Q==",
"O5oFeHTt5uM3RVtP2hSnbg==",
"Jf1ZP7obQ3O4An80PTszDg==",
"Mr1YHU2Wbr2se0JwP3NGnA=="
};
IV.Add(dd[6], IVList.ToArray());
}
static void Main(string[] args)
{
Init();
for (var i = 0; i < 7; i++)
{
var encryptedText = cryptText[dd[i]];
var iv = IV[dd[i]];
for (var j = 0; j < encryptedText.Length; j++)
{
var decryptedBytes = Decrypt(Convert.FromBase64String(encryptedText[j]), Convert.FromBase64String(Key), Convert.FromBase64String(iv[j]));
Console.WriteLine(Encoding.UTF8.GetString(decryptedBytes));
}
}
}
public static byte[] Decrypt(byte[] encryptedBytes, byte[] key, byte[] iv)
{
using (var csp = new AesCryptoServiceProvider())
{
csp.KeySize = 128;
csp.BlockSize = 128;
csp.Mode = CipherMode.CFB;
csp.Padding = PaddingMode.None;
csp.Key = key;
csp.IV = iv;
using (var decryptor = csp.CreateDecryptor())
using (var mstream1 = new MemoryStream(encryptedBytes.Skip(16).ToArray()))
using (var cstream = new CryptoStream(mstream1, decryptor, CryptoStreamMode.Read))
using (var mstream2 = new MemoryStream())
{
cstream.CopyTo(mstream2);
return mstream2.ToArray();
}
}
}
public static byte[] Decrypt(string encryptedString, string password)
{
var encryptedBytes = Convert.FromBase64String(encryptedString);
var salt = encryptedBytes.Skip(8).Take(8).ToArray();
var kiv = GenerateKIV(salt, password, HashAlgorithmName.SHA512, 10000, 48).ToList();
using (var csp = new AesCryptoServiceProvider())
{
csp.KeySize = 128;
csp.BlockSize = 128;
csp.Mode = CipherMode.CFB;
csp.Padding = PaddingMode.None;
csp.Key = kiv.GetRange(0, 32).ToArray();
csp.IV = kiv.GetRange(32, 16).ToArray();
using (var decryptor = csp.CreateDecryptor())
using (var mstream1 = new MemoryStream(encryptedBytes.Skip(16).ToArray()))
using (var cstream = new CryptoStream(mstream1, decryptor, CryptoStreamMode.Read))
using (var mstream2 = new MemoryStream())
{
cstream.CopyTo(mstream2);
return mstream2.ToArray();
}
}
}
private static IEnumerable<byte> GenerateKIV(byte[] salt, string password, HashAlgorithmName hashAlgorithmName, int iterations, int length)
{
var keyGenerator = new Rfc2898DeriveBytes(password, salt, iterations, hashAlgorithmName);
return keyGenerator.GetBytes(length);
}
}
}
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OneCompiler's C# online compiler supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample program which takes name as input and print your name with hello.
using System;
namespace Sample
{
class Test
{
public static void Main(string[] args)
{
string name;
name = Console.ReadLine();
Console.WriteLine("Hello {0} ", name);
}
}
}
C# is a general purpose object-oriented programming language by Microsoft. Though initially it was developed as part of .net but later it was approved by ECMA and ISO standards.
You can use C# to create variety of applications, like web, windows, mobile, console applications and much more using Visual studio.
| Data Type | Description | Range | size |
|---|---|---|---|
| int | To store integers | -2,147,483,648 to 2,147,483,647 | 4 bytes |
| double | to store large floating point numbers with decimals | can store 15 decimal digits | 8 bytes |
| float | to store floating point numbers with decimals | can store upto 7 decimal digits | 4 bytes |
| char | to store single characters | - | 2 bytes |
| string | to stores text | - | 2 bytes per character |
| bool | to stores either true or false | - | 1 bit |
datatype variable-name = value;
When ever you want to perform a set of operations based on a condition or set of few conditions IF-ELSE is used.
if(conditional-expression) {
// code
}
else {
// code
}
You can also use if-else for nested Ifs and If-Else-If ladder when multiple conditions are to be performed on a single variable.
Switch is an alternative to If-Else-If ladder.
switch(conditional-expression) {
case value1:
// code
break; // optional
case value2:
// code
break; // optional
...
default:
// code to be executed when all the above cases are not matched;
}
For loop is used to iterate a set of statements based on a condition.
for(Initialization; Condition; Increment/decrement) {
// code
}
While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.
while(condition) {
// code
}
Do-while is also used to iterate a set of statements based on a condition. It is mostly used when you need to execute the statements atleast once.
do {
// code
} while (condition);
Array is a collection of similar data which is stored in continuous memory addresses. Array values can be fetched using index. Index starts from 0 to size-1.
data-type[] array-name;
Method is a set of statements which gets executed only when they are called. Call the method name in the main function to execute the method.
static void method-name()
{
// code to be executed
}