- Bouncy Castle is a collection of APIs used in cryptography. Plus PKCS#10, PKCS#12, CMS, S/MIME, OpenPGP. And the Java Cryptography Extension (JCE) provider. Further components built upon the JCE provider support additional functionality, such as PGP support, S/MIME, etc.
- Installing the Bouncy. Castle JCE provider. Installing the Bouncy. Castle JCE provider. The provider can be configured as part of your environment via static registration by adding an entry to the java. I can install Bouncy Castle via 'install mvn:org.bouncycastle/bcprov. To install the provider at run.
The information below has originaly been provided by The Legion of the Bouncy Castle. How to use Bouncy Castle Cryptographic API in NetBeans or Eclipse for Java JSE projects 2 comments - The Bouncy Castle Crypto API for Java provides a lightweight cryptography API that works with everything from the J2ME to the JDK 1.6 platform and also a provider for the Java Cryptography Extension JCE (provides an implementation for JCE 1.2.1.
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I have a Java encryption routine that I need to decrypt with C#. The Java routine is using a Bouncy Castle line that I've been unable to replicate in C#:
This is the only reference to Bouncy Castle in the Java code.
I have no control over the Java side, only the C# side. All of my C# decryption attempts give me junk data, and the only discrepancy I can spot in the Java code compared with my C# code is the lack of Bouncy Castle on the C# side. Does anyone know how I can assign BouncyCastle as the security provider in C#? I have looked through the Bouncy Castle source code, on their site, and online with no luck.
Edit: Given the responses thus far, I have updated my code to use Bouncy Castle. I am adding my C# decryption code and the Java encryption code below. While I am using Bouncy Castle, I still cannot get the decryption to work properly. I must be overlooking something simple but I cannot see it... Any thoughts are appreciated.
C# decryption code:
Java code:
Meowntain
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3 Answers
As codes comments: 'In C# you either use the BC library directly, or you don't. This kind of 'provider' concept doesn't exist.' This is similar to using the 'lightweight API' in Java. There are no equivalents to the Java JCE API defined by Oracle / OpenJDK.
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I had to do something similar before. My application had to Encrypt data in C# then decrypt it in Java. However, I wrote something that Decrypts data in C# side as well. Here is my code:
EDIT:
Adding the libraries I have used:
**EDIT 2: **Adding the readPrivateKey function:
I also asked a few questions around this matter too, if you look at the questions I asked through my profile or searching the site, you might find some help as well.
**Edit 3: ** //Adding Encryption function
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In crypto everything needs to match exactly on both sides. That means checking that everything matches, byte for byte. Do your IV's match byte for byte? Do your final keys (after the KDFs) match byte for byte? Do the two cyphertexts match byte for byte? There may have been transmission problems between the two systems.
Do you get any error messages when trying to decrypt, such as a 'Bad Padding' error? If you do not, then the padding is being decrypted correctly, even if the bulk of the message is not. That may indicate that the problem is not with the decryption as such, but elsewhere in the system.
Have you tried passing a very simple message, 'Hello World!' through the process? How did that do?
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