MD5 with RSA

[Sean Len]

Hi all, I currently working on a project that need to perform a security hashing that involve both MD5 and RSA.
MD5 hashing is easy to implement. But I have no idea on how RSA works. I perform some research online and I notice most RSA involve Public and Private Keys to perform signing.

Do any1 have experience on this kind of hash method?
Any sample code can provided in order for me to get a better understanding?

[Dormilich]

RSA is not a hashing method, RSA is an encryption method using private/public keys.

[Sean Len]

Thanks, I also notice the different between these two.
But anyway, can I first use MD5 hash my string, then use RSA to encrypt the hash result? Or the other way round?

[Dormilich]

that depends on what you want. hashing and encryption usually serve different purposes.

[Sean Len]

Im working on a integration between gateway.
The 2nd party used MD5 with RSA. But they provide Java source code.
My part is .NET, therefore problems come.