How to encrypt

Cantab.

Hey,

Anyone out there know how to encrypt a string in C#, compact framework, visual studio 2005?

I'm trying to write a function something like:

/*To be written in C#, Visual Studio 2005, Compact Framework*/
private string encrypt(string plaintext_string){
	string public_key="blah...blah...blah";	//public key
	
	...	//magic
	
	return encrypted_string;
}

I'm also trying to write encrypt/decrypt functions in PHP:

/*To be written in PHP, version 4.4.7, mcrypt enabled*/
function decrypt(string encrypted_string){
	File private_key=new File("/path/to/private/key/");	//private key stored in a secure directory (e.g. .htaccess)
	
	...   //magic

	private_key.destroy();		//somehow remove private key from memory once you're finished using it
	return decrypted_string;
}

function encrypt(string plaintext_string){
	string public_key="blah...blah...blah";
	
	...	//magic

	return encrypted_string;
}

NutJob

JFGI:D


http://channel9.msdn.com/Showpost.aspx?postid=122153
http://www.schneier.com/book-applied.html (Read this and keep it around i get lost without it)

Can a mod move this back to programming as its posted across multiple areas