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1. Top results related to how to crack a password-protected rar file free

   • How to create a password protected pdf file

     Top Answer

     Answered Sep 03, 2010 · 5 votes

     Download the library I am using from a blog post on the ID Security Suite site:

     <?php function pdfEncrypt ($origFile, $password, $destFile){ require_once('FPDI_Protection.php'); $pdf =& new FPDI_Protection(); $pdf->FPDF('P', 'in'); //Calculate the number of pages from the original document. $pagecount = $pdf->setSourceFile($origFile); //Copy all pages from the old unprotected pdf in the new one. for ($loop = 1; $loop <= $pagecount; $loop++) { $tplidx = $pdf->importPage($loop); $pdf->addPage(); $pdf->useTemplate($tplidx); } //Protect the new pdf file, and allow no printing, copy, etc. and //leave only reading allowed. $pdf->SetProtection(array(), $password); $pdf->Output($destFile, 'F'); return $destFile; } //Password for the PDF file (I suggest using the email adress of the purchaser). $password = "testpassword"; //Name of the original file (unprotected). $origFile = "sample.pdf"; //Name of the destination file (password protected and printing rights removed). $destFile ="sample_protected.pdf"; //Encrypt the book and create the protected file. pdfEncrypt($origFile, $password, $destFile );?>

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   • How to create a password protected Excel file?

     Top Answer

     Answered Aug 21, 2018 · 2 votes

     If you want an Excel password all you need is something like this:

     using Microsoft.Office.Interop.Excel-//create your spreadsheet here...-WorkbookObject.Password = password;WorkbookObject.SaveAs("spreadsheet.xls")

     This requires Excel to be installed.

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     2/5

   • How to make a password protected file in C#

     Top Answer

     Answered Oct 12, 2013 · 1 votes

     Password protecting a text file that is not encrypted is not really possible. However, you can validate if your text file has been modified, so that you are aware it has been altered by someone.

     The concept is simple. Use a password to encrypt or obfuscate a hash of the data (text file). You can the later check this hash against the current data and determine whether or not it matches. You will need to store this signature (encrypted hash) somewhere maybe in a file called (textfile.sig).

     You can use the SHA1Managed .NET class to create the hash, and the TripleDESCryptoServiceProvider class to encrypt the resulting hash.

     something like...

     public string GetSignature(string text, string password){ byte[] key; byte[] key2; GetKeys(password, out key, out key2); string sig = encryptstring(GetSHA1(text), key, key2);} public void GetKeys(string password, out byte[] key, out byte[] key2){ byte[] data = StringToByte(password); SHA1 sha = new SHA1CryptoServiceProvider(); MD5 md5 = new MD5CryptoServiceProvider(); byte[] hash1 = sha.ComputeHash(data); byte[] hash2 = md5.ComputeHash(data); // Generate some key data based on the supplied password; byte[] key = new byte[24]; for (int i = 0; i < 20; i++) { key[i] = hash1[i]; } for (int i = 0; i < 4; i++) { key[i + 20] = hash2[i]; } byte[] key2 = new byte[8]; for (int i = 0; i < 8; i++) { key2[i] = hash2[i+4]; }}public string GetSHA1(string text){ UnicodeEncoding UE = new UnicodeEncoding(); byte[] hashValue; byte[] message = UE.GetBytes(text); SHA1Managed hashString = new SHA1Managed(); string hex = ""; hashValue = hashString.ComputeHash(message); foreach (byte x in hashValue) { hex += String.Format("{0:x2}", x); } return hex;}public string ByteToString(byte[] buff){ string sbinary = ""; for (int i = 0; i < buff.Length; i++) { sbinary += buff[i].ToString("X2"); // hex format } return (sbinary);}public string encryptstring(string instr, byte[] key, byte[] key2){ TripleDES threedes = new TripleDESCryptoServiceProvider(); threedes.Key = key; threedes.IV = key2; ICryptoTransform encryptor = threedes.CreateEncryptor(key, key2); MemoryStream msEncrypt = new MemoryStream(); CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write); // Write all data to the crypto stream and flush it. csEncrypt.Write(StringToByte(instr), 0, StringToByte(instr).Length); csEncrypt.FlushFinalBlock(); return ByteToString(msEncrypt.ToArray());}public string decryptstring(string instr, byte[] key, byte[] key2){ if (string.IsNullOrEmpty(instr)) return ""; TripleDES threedes = new TripleDESCryptoServiceProvider(); threedes.Key = key; threedes.IV = key2; ICryptoTransform decryptor = threedes.CreateDecryptor(key, key2); // Now decrypt the previously encrypted message using the decryptor MemoryStream msDecrypt = new MemoryStream(HexStringToByte(instr)); CryptoStream csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read); try { return ByteToString(csDecrypt); } catch (CryptographicException) { return ""; }}

     Otherwise, you will if you want to hide the data from people, you need to encrypt the data in the text file. You can do this by calling encryptstring() with the full text data instead of the hash of the data.

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     3/5

   • How to unzip a password protected file in Android

     Top Answer

     Answered Feb 21, 2013 · 10 votes

     If you want to implement this function into one of your Apps you can use Zip4j-Library which supports AES 128/256 Encryption and Standard Zip Encryption. The way how to use it, is very similar to standard zip libraries in java.

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     4/5

   • How to create a password protected file in C#

     Top Answer

     Answered Apr 11, 2009 · 16 votes

     encrypt:

     private const int SaltSize = 8;-public static void Encrypt( FileInfo targetFile, string password ){ var keyGenerator = new Rfc2898DeriveBytes( password, SaltSize ); var rijndael = Rijndael.Create(); // BlockSize, KeySize in bit --> divide by 8 rijndael.IV = keyGenerator.GetBytes( rijndael.BlockSize / 8 ); rijndael.Key = keyGenerator.GetBytes( rijndael.KeySize / 8 ); using( var fileStream = targetFile.Create() ) { // write random salt fileStream.Write( keyGenerator.Salt, 0, SaltSize ); using( var cryptoStream = new CryptoStream( fileStream, rijndael.CreateEncryptor(), CryptoStreamMode.Write ) ) { // write data } }}

     and decrypt:

     public static void Decrypt( FileInfo sourceFile, string password ){ // read salt var fileStream = sourceFile.OpenRead(); var salt = new byte[SaltSize]; fileStream.Read( salt, 0, SaltSize ); // initialize algorithm with salt var keyGenerator = new Rfc2898DeriveBytes( password, salt ); var rijndael = Rijndael.Create(); rijndael.IV = keyGenerator.GetBytes( rijndael.BlockSize / 8 ); rijndael.Key = keyGenerator.GetBytes( rijndael.KeySize / 8 ); // decrypt using( var cryptoStream = new CryptoStream( fileStream, rijndael.CreateDecryptor(), CryptoStreamMode.Read ) ) { // read data }}

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2. Videos

   • 

     3:24

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     [2024] Best RAR Password Unlocker | How to Recover RAR File Password✔️- WinRAR Password Unlock

     Apr 30, 2022

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     rar password recovery online | How to Open RAR File Without Password (RAR Password Unlocker)

     Apr 12, 2022

     134.4K Views

   • 

     2:00

     ezyzip.com

     How To Unlock RAR Password (4 Methods)

     Jul 25, 2023

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3. passper.imyfone.com › rar › break-winrar-passwordFree Methods to Break RAR Password [2022 RAR Password Cracker]

   passper.imyfone.com › rar › break-winrar-password

   • Cached

   Apr 24, 2023 · In this article, we will share with you 5 ways to easily break RAR/WinRAR password on Windows 10/8.1/8/7/XP/Vista computer.

4. www.ezyzip.com › articles › enHow To Unlock RAR Password (4 Methods) - ezyZip

   www.ezyzip.com › articles › en

   • Cached

   Jul 6, 2023 · Create a password hash file: Before you can start cracking, you need to create a password hash file. You can do this by typing: ./rar2john yourfile.rar > hashfile. Copy Code. (Replace ‘yourfile.rar’ with the name of your RAR file) Start the cracking process: Now, you’re ready to start cracking. To start the process, type:

   • Video Duration: 2 min

5. People also ask

   How to crack a password-protected RAR file?

   • To crack a password-protected RAR file, you have to recoup the password and then unlock the file. There are a few techniques on how to crack RAR password, so let's look at the easiest ones. Way 1. Crack RAR Archive Password with CMD Way 2. Crack RAR Archive Password Online Way 3. RAR Password Crack with cRARk Way 4.

   Top 4 Feasible Ways to Crack RAR Password [2021] - PassFab Software

   www.passfab.com/rar/crack-rar-password.html

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   How to unlock RAR files with a password?

   • Luckily, you can unlock the RAR files protected with a password even when you have lost or forgotten the RAR password and even in an effortless way. To get back your WinRAR password quickly, your best choice is to use WinRAR password cracker, that's a credible third-party software program - PassFab for RAR.

   Top 4 Ways to Unlock WinRAR Password - PassFab Software

   www.passfab.com/rar/unlock-winrar-password.html

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   Is a RAR file password protected?

   • RAR is one of the foremost archive formats. The compressed format saves not only space but also the data and time. It is safe and easy for file transferring. It allows password protection, which can keep the important file saved from any unauthorized access. So, if you have downloaded a RAR file which is password protected.

   How to Remove Password from RAR File without Software - Jihosoft

   www.jihosoft.com/windows-tips/remove-rar-password-windows.html

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   How to let WinRAR password crack when you know the password?

   • Here are the steps to follow to let Win rar password crack when you know the password. 1. Double-click protected RAR file and open it in WinRAR etc. compression software. 2. Click on Extract to button on the toolbar, and confirm location to save the RAR files after unraring archive. Click OK.

   Top 4 Ways to Unlock WinRAR Password - PassFab Software

   www.passfab.com/rar/unlock-winrar-password.html

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6. www.geeksforgeeks.org › remove-rar-winrar-passwordHow to Remove RAR/WinRAR Password Using CMD? - GeeksforGeeks

   www.geeksforgeeks.org › remove-rar-winrar-password

   • Cached

   Apr 15, 2024 · RAR/WinRAR archives often come with password protection, which can be a hindrance when you need to access the contents. Fortunately, CMD (Command Prompt) provides two efficient methods to remove RAR/WinRAR passwords: cRARk and utilizing a .bat file.

7. www.jihosoft.com › windows-tips › remove-rarHow to Remove Password from RAR File without Software

   www.jihosoft.com › windows-tips › remove-rar

   • Cached

   • Remove Password from RAR File with CMD. In order to help non-technical users crack password-protected RAR files easily, some advanced user has included command lines in a batch file, which works as a free password cracker for RAR file.
   • Remove Password from RAR File Using Notepad. Removal of the password of RAR file using Notepad is very easy and does not involve the usage of any software.
   • Remove RAR Password Online. This method allows you to remove RAR file password without any use of the software. However, this method first converts the RAR file into Zip file.

8. www.passfab.com › rar › crack-rar-passwordTop 4 Feasible Solutions to Crack RAR Password - PassFab Software

   www.passfab.com › rar › crack-rar-password

   • Cached

   To crack a password-protected RAR file, you have to recoup the password and then unlock the file. There are a few techniques on how to crack RAR password, so let's look at the easiest ones.

9. www.passfab.com › rar › unlock-winrar-passwordTop 4 Amazing Ways to Unlock WinRAR Password - PassFab Software

   www.passfab.com › rar › unlock-winrar-password

   • Cached

   The whole files that are compressed with RAR compression are known as RAR files or WinRAR Compressed Archives. What to do if you forgot the password to access a RAR file? Luckily, you can unlock the RAR files protected with a password even when you have lost or forgotten the RAR password and even in an effortless way.