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by: Stingray |
last post by:
Are there any know problems with using a MemoryStream as a backing store for
a CryptoStream? I'm trying to simply encrypt and decrypt text in memory.
I'd like to create some simple methods to encrypt text before writing to a
database and decrypt it when reading it back. I figured I'd use a
MemoryStream that I can either store as a blob or convert to a string and
store as a varchar. Anyway, I can't get the CryptoStream to write to the...
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by: MattP |
last post by:
Ok, with the help of some examples found on the web and some minor
modifications on our own, we have a simple and working encrypt and
decrypt solution. It runs as a service, watches for files with a
specific extension in a specific directory. The files are uploaded by
FTP to this directory. The service then does the following steps:
1) Verify it can open the file (so we know it's fully uploaded).
2) Try to decrypt the file with known...
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by: weixiang |
last post by:
Hi,
I want to use DES and CryptoStream to serialize a encrypted stream to a file
with a header "CRYPT". And I wrote these code:
To store:
FileStream fileStream = new FileStream(fileName, FileMode.Create,
FileAccess.Write, FileShare.None);
byte signture = AE.GetBytes("CRYPT");
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by: Daniel Weber |
last post by:
Hi!
In my code I create a CryptoStream around another stream of my own, with
CryptoStreamMode.Read. So I just can read from the CryptoStream. When I
close that CryptoStream, however, the underlying stream's Write() method is
called, with an empty buffer (offset and count-parameters are also 0). My
streams' CanWrite property returns false, so the CryptoStream should not
call Write(). It shouldn't call Write() at all, because I created it...
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by: pesso |
last post by:
I have the following code that's taken and modified from a got_dot_net
example.
I'm trying to decrypt an Xml file that's been encrypted. I can dump the
decrypted stream to the console, but if I try to load that into
XmlTextReader, it throws XmlException. I'd appreciate your help.
//create file stream to read encrypted file back
FileStream fsread = new FileStream(args, FileMode.Open,
FileAccess.Read);
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by: ghause |
last post by:
I'm using a crypto stream to encrypt/decrypt files. It works fine with simple
files like .txt but butchers pdfs and xls. Is there a solid way to
encrypt/decrypt files that are more complex than plain text?
Thanks
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by: semedao |
last post by:
Hi,
I am using cryptostream on both sides on tcp connection that pass data.
I am also use asyc socket , so , the data that recieved in the callback
method not always have the length of the buffer I sent.
for ex
I want to send 10000 bytes
I can get it in 10 times of 1000 bytes each.
so , I need to know when I complete the receiving , I want to write inside
cryptostream and check the position compare it to the length I already know
I...
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by: TC |
last post by:
Hey All,
I posted this to the Crypto users group and forgot to add the VB.Net users
group. I apologize for any confusion.
I have been testing a try / catch / finally block and purposely raising
exceptions and I've noticed that if an exception of "Length of the data to
decrypt is invalid." is raised with the CryptoStream object, later this
exception will get raised a second time and thrown to the caller when trying
to close the stream...
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by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
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by: jinu1996 |
last post by:
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by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
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by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
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by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
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by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
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