Secure Coding mailing list archives
RE: Java -> .NET RSA Encryption
From: "Flanagan, Kevin" <Kevin.Flanagan () bmwfs com>
Date: Thu, 31 Mar 2005 22:28:30 +0100
Not sure about Java, but in .NET you can leverage the CryptoAPI to create a key pair and store the public key and private key part in separate XML blobs. I then took it a step further and write them out to files. I am not sure how standard the XML structure is or if there is a java equivalent to the MS Crypto API. Here is the C# code that I use to generate RSA key pairs: using System; using System.IO; using System.Security.Cryptography; using System.Text; public class KeyGen { public static void Main(String[] args) { int numKeySize = 2048; try { if (args.Length == 1) numKeySize = System.Convert.ToInt32(args[0].ToString(),10); RSACryptoServiceProvider rsa =new RSACryptoServiceProvider(numKeySize); // Save the public key info out to pubkey FileStream fs = new FileStream("pubkey.key",FileMode.Create); StreamWriter sw = new StreamWriter(fs); sw.Write(rsa.ToXmlString(false)); sw.Close(); // Save the priate key info out to privkey fs = new FileStream("privkey.key",FileMode.Create); sw = new StreamWriter(fs); sw.Write(rsa.ToXmlString(true)); sw.Close(); } catch (System.Exception e) { Console.Write ("Error: " + e.ToString()); } } } -----Original Message----- From: john bart [mailto:[EMAIL PROTECTED] Sent: Thursday, March 31, 2005 1:12 AM To: [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: RE: Java -> .NET RSA Encryption What are the main steps to generate a key pair, put the private in the .NET environment and the public in java keystore?
A tip regarding the exchange of keys: Traditional Java keystores does not allow you to import or export a private key. Only to generate it >in the keystore. However, you can load a PKCS12 (pfx) file as a keystore instead. So by generating the keys using OpenSSL and packaging them as a PKCS12-package you can >make them available for both platforms without installing additional providers. Regards Fredr!k
_________________________________________________________________ Express yourself instantly with MSN Messenger! Download today it's FREE! http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/
Current thread:
- Java -> .NET RSA Encryption john bart (Mar 29)
- <Possible follow-ups>
- SV: Java -> .NET RSA Encryption Fredrik Hesse (Mar 30)
- RE: Java -> .NET RSA Encryption john bart (Mar 31)
- RE: Java -> .NET RSA Encryption Flanagan, Kevin (Mar 31)