Questions tagged [cryptostream]
83 questions
0
votes
0 answers
AeS encryption 'Value cannot be null'
I have recently been experimenting with the "CryptoStream", and ran into the idea of encrypting & decrypting a text via. the Aes class. 'Namespace: System.Security.Cryptography'
After making a function that succesfully encrypted a text using two…
Rasmus Søborg
- 3,597
- 4
- 29
- 46
0
votes
2 answers
Unable to create CryptoStream to read from - System.NotSupportedException
There is really simple code to decrypt file (triple des encryption):
FileStream fin = new FileStream(FilePath, FileMode.Open, FileAccess.Read);
TripleDES tdes = new TripleDESCryptoServiceProvider();
CryptoStream cs = new…
user1209216
- 7,404
- 12
- 60
- 123
0
votes
4 answers
"Specified initialization vector (IV) does not match the block size for this algorithm" using an CryptoStream
I've had troubles using an CryptoStream for my file encryption..
Code:
public static void EncryptFile(string inputFile, string outputFile)
{
int num;
string s = "PUPlr";
byte[] bytes = new UnicodeEncoding().GetBytes(s);
…
Adam M
- 113
- 3
- 13
-1
votes
1 answer
Read string from CryptoStream correctly?
I try write and read back string from file. Use this code for the write:
...
Aes aes = Aes.Create();
aes.KeySize = 256;
aes.BlockSize = 128;
aes.Mode = CipherMode.CBC;
aes.Padding =…
Malcolm
- 33
- 1
- 7
-1
votes
1 answer
ReadToEnd missing character c#
I have an XML file with information about my stringConnection parameters which decrypted with this method:
public void DecryptFile(string sInputFileName, string sOutputFileName, string sKey)
{
DESCryptoServiceProvider DES = new…
Sandra Rodríguez
- 3
- 3
-1
votes
1 answer
Unchecked returned value causing unexpected states and conditions
I have been searching the internet for over an hour and can only find client side discussions the my latest scan finding. What I am receiving is method that uses the Read() method and because the Read() ignores the value returned could cause the…
Steve Holdorf
- 141
- 1
- 14
-1
votes
1 answer
Please how can i return decoded bytes instead of text from a CryptoStream
Please how can i return the decoded bytes instead of text in the following snippet:
Public Shared Function decryptAsText(key As Byte(), ciphertext As Byte(), iv As Byte()) As String
Dim dec As String = Nothing
Try
Using rj = New…
Charles Okwuagwu
- 10,538
- 16
- 87
- 157
-1
votes
1 answer
How do I translate this C# encrypt function into Java?
I need to translate the below C# codes into Java, however, I could not find any Java equivalent to the Rfc2898DerivedBytes and Rijndael of C#.
private static string Encrypt(string sData, string sEncryptionKey)
{
string str = null;
string…
SUT
- 384
- 1
- 7
- 23