Question

One of my client site uses MD5.js

in particular this function

function b64_md5(s)    { return rstr2b64(rstr_md5(str2rstr_utf8(s))); }

Is there an equivalent of this in

Answer 1

Assuming you want to return the Base64 representation of a MD5 hash of a string this would be equivalent:

public static string GetMD5Base64Hash(string strToHash)
{
    byte[] byteStr = Encoding.UTF8.GetBytes(strToHash);
    byte[] hashVal = (new System.Security.Cryptography.MD5CryptoServiceProvider()).ComputeHash(byteStr);
    string base64Hash = Convert.ToBase64String(hashVal);
    return base64Hash;
}