Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>It's going to be something like this code shown below as a unit test. The first part does the encryption - the second half does the decryption.</p> <p>Paste the code into a new MSTest unit test (Create New Test Project or add to an existing one).</p> <p>The key and the iv are what you'll need to set accordingly.</p> <pre><code>//needed to convert from hex string public static byte[] FromHexString(string hexString) { int NumberChars = hexString.Length; byte[] bytes = new byte[NumberChars / 2]; for (int i = 0; i &lt; NumberChars; i += 2) bytes[i / 2] = Convert.ToByte(hexString.Substring(i, 2), 16); return bytes; } [TestMethod] public void Test() { string toEncryptString = "24.9195N 17.821E"; //initialise key and IV (note - all zero IV is not recommended!) byte[] key = FromHexString("0123456789abcdef0123456789abcdef"); byte[] iv = FromHexString("00000000000000000000000000000000"); byte[] toEncrypt = System.Text.Encoding.UTF8.GetBytes(toEncryptString); byte[] cipherBytes = null; string cipherText = null; //encrypt using (System.Security.Cryptography.Rijndael r = new RijndaelManaged()) { r.Key = key; r.IV = iv; using(System.Security.Cryptography.ICryptoTransform transform = r.CreateEncryptor()) { using (var mStream = new System.IO.MemoryStream()) { using (var cStream = new CryptoStream(mStream, transform, CryptoStreamMode.Write)) { cStream.Write(toEncrypt, 0, toEncrypt.Length); cStream.FlushFinalBlock(); cipherBytes = mStream.ToArray(); cipherText = Convert.ToBase64String(cipherBytes); } } } } //decrypt byte[] toDecrypt = Convert.FromBase64String(cipherText); string decryptedString = null; using (System.Security.Cryptography.Rijndael r = new RijndaelManaged()) { r.Key = key; r.IV = iv; using(System.Security.Cryptography.ICryptoTransform transform2 = r.CreateDecryptor()) // &lt;-- difference here { using (var mStream2 = new System.IO.MemoryStream()) { using (var cStream2 = new CryptoStream(mStream2, transform2, CryptoStreamMode.Write)) { cStream2.Write(toDecrypt, 0, toDecrypt.Length); cStream2.FlushFinalBlock(); decryptedString = System.Text.Encoding.UTF8.GetString(mStream2.ToArray()); } } } } Assert.AreEqual(toEncryptString, decryptedString); } </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POEncryption-decryption between Ruby and Dot net
      singulars
      1. PTQuestion
    1. PTAnswer
    1. This table or related slice is empty.
    1. USAndras Zoltan
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COHi, But my problem still persists. actually i am not trying enc-decryption in dot net. the encryption is done thru this code in ruby, as shown above. the decyption has to be done in C#. thats where the problem is. if i pass the ruby-encrypted string to this function, then I get an exception. Secondly, the rubyt encrypted string is I/KHlflomjFprrySknfNN1D9QGjSYLR724GDF1yPw0wi2fGlxoudTc/CvfaQwJPF, whereas dot net encrypted string is V0if2VhxaEbTj4w4SEDBYKSSl0DxmLH/1zgZxjrfonM=
      singulars
      1. PO
      1. USsantubangalore
    2. COThe ruby code is probably using a random IV - in which case you have no hope of being able to decrypt it because you need to know both the key and the IV in order for it to work. You can use the decryption code to perform the decryption - I'm not saying you have to do both in C# - just giving an example of how to do both; since you asked for C# code that is equivalent to the Ruby code :)
      singulars
      1. PO
      1. USAndras Zoltan
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload