I've just found out about stackoverflow.com and just checking if there are ideas for a constraint I'm having with some friends in a project. Although this is more a theoretical question to which I've been trying to find an answer for some time. I'm not much given into cryptography but if I'm not clear enough I'll try to edit/comment to ...
Say you have a bunch of files. Say you can store meta data to these files. Say, one of these meta attributes were called "encryption" Say everyone was allowed to look at these files, but since they are encrypted, only people who know how to decrypt them can actually read the contents. Say, for every given value of "encryption", a group o...
What is the difference between Obfuscation, Hashing, and Encryption? Here is my understanding: Hashing is a one-way algorithm; cannot be reversed Obfuscation is similar to encryption but doesn't require any "secret" to understand (ROT13 is one example) Encryption is reversible but a "secret" is required to do so ...
When sending data over HTTPS, I know the content is encrypted, however I hear mixed answers about whether the headers are encrypted, or how much of the header is encrypted. How much of HTTPS headers are encrypted? Including GET/POST request URLs, Cookies, etc. ...
I need to store the user's password in my iphone app. When posting an app to the app store, I have to tell Apple if there's encryption in the app for export purposes. I don't want my app to be restricted to US only, but I also don't want to store or send passwords over the net in clear text. So basically the question is, can I encryp...
I just installed a SSL certificate. This certificate is encrypted with 2048 bit encryption. However, the cypher is 128 bit encryption(or 40, or some other variation depending on the browser.) It seems that there are two different types of encryption here. The "handshake" encryption of 2048 and the "over the wire" encryption of some mag...
Much searching and reading has not told me whether the capicom.encrypteddata class module (it's VB6, but that shouldn't matter in answering this question) is using 2-key 3DES or 3-key 3DES. (.Algorithm.Name = CAPICOM_ENCRYPTION_ALGORITHM_3DES) Anyone know which one it is using? A source of this information would also be helpful. I sus...
I have an unmanaged C dll I call from a C# class library that encrypts a string value into an encrypted string that contains non-ascii characters. I need to take the data and write its binary values to a file but C# treats text as strings rather than a byte[]. The encrypted value commonly contains special characters (\r, \O, etc). Whe...
I am working on a project that does a large amount of hashing, signing, and both asymmetric and symmetric encryption. Since these steps have a significant effect on our performance and available load, I was wondering if there is a hardware based solution to offloading the work. I have done some surfing to find out, and the only items I...
I need to be able to send encrypted data between a Ruby client and a Python server (and vice versa) and have been having trouble with the ruby-aes gem/library. The library is very easy to use but we've been having trouble passing data between it and the pyCrypto AES library for Python. These libraries seem to be fine when they're the onl...
I have a client who is in need of a file based encryption / decryption application to be used between Linux / Windows 2003 Server. The goal is to have a single file compressed nightly on a linux platform and secured using a script, transmitted over FTP, decrypted on the Windows 2003 server and available for other import routines such as...
We have recently implemented Transparent Data Encryption in SQL Server 2008 for local databases on our developers laptops to keep them protected in the case a laptop is stolen or lost. This works fine. Now we are trying to figure out a way to have the certificate expire everyday, forcing an automated process (a script at logon maybe) t...
I was wondering if anyone had successfully used DPAPI with a user store in a web farm enviroment? Because our application is a recently converted from 1.1 to 2.0 asp.net app, we're using a custom wrapper which directly calls the CryptUnprotect methods. But this should be the same as the ProtectedData method available in the 2.0 framewor...
Can someone give me the code to Encrypt and Decrypt a string in C#? I'm trying to do this with TripleDES but that is not a requirement. ...
What tools are available to encrypt or password-protect a file stored on the IFS? *integrated file-system, accessible from Windows ...
Hey everyone, I am researching a project where we would need to keep a value encrypted from the client all the way to a black box system without decrypting it at any point in between. We are using SSL between the browser and web server, but the values are automatically decrypted at the web server, which is what we need to keep from happ...
I have a business requirement that forces me to store a customer's full credit card details (number, name, expiry date, CVV2) for a short period of time. Rationale: If a customer calls to order a product and their credit card is declined on the spot you are likely to lose the sale. If you take their details, thank them for the transacti...
I need to develop an application which stores data in a SQL Server 2005 database (the app itself will be either a WCF Service or an Asp.Net Web Service). Now, this data is supremely confidential, and I need to have it stored in an encrypted form in the database. So, I am wondering what the best practices are around this. I know that th...
I have backed up an encrypted DB (symmetric key/certificate) and restored it on a different server. Unfortuantely we're having problems with the decryption... hoping someone can help. In the restored db, I can see the Symmetric Key and the Certificate in SSMS, but when I try to Open the key using the cert ( open symmetric key Key...
Currently I'm writing it in clear text oops!, it's an in house program so it's not that bad but I'd like to do it right. How should I go about encrypting this when writing to the registry and how do I decrypt it? OurKey.SetValue("Password", textBoxPassword.Text); Thanks guys ...