How to hash a password

Question

I'd like to store the hash of a password on the phone, but I'm not sure how to do it. I can only seem to find encryption methods. How should the password be hashed properly?

Answer 1

UPDATE: THIS ANSWER IS SERIOUSLY OUTDATED. Please use the recommendations from https://stackoverflow.com/a/10402129 or https://stackoverflow.com/a/73125177 instead.

You can either use

var md5 = new MD5CryptoServiceProvider();
var md5data = md5.ComputeHash(data);

or

var sha1 = new SHA1CryptoServiceProvider();
var sha1data = sha1.ComputeHash(data);

To get data as byte array you could use

var data = Encoding.ASCII.GetBytes(password);

and to get back string from md5data or sha1data

var hashedPassword = ASCIIEncoding.GetString(md5data);