Gravatar MD5 Hash

gravatarmd5.cs

public static MvcHtmlString GetGravatarForUser(string email, int size = 50)
{
    var hash = Md5.CreateHash(email);

    // return new MvcHtmlString(string.Format("https://secure.gravatar.com/avatar/{0}?s=50&d={1}", hash, defaultAvatarUrl));
    return new MvcHtmlString(string.Format("https://secure.gravatar.com/avatar/{0}?s={1}", hash, size));
}



public class Md5
{
    /// <summary>
    /// Create an MD5 hash for a given string
    /// </summary>
    /// <param name="input">
    /// The input string
    /// </param>
    /// <returns>
    /// The computed hash
    /// </returns>
    public static string CreateHash(string input)
    {
        input = input.ToLower();

        var encodedInput = new UTF8Encoding().GetBytes(input);

        var hash = ((HashAlgorithm)CryptoConfig.CreateFromName("MD5")).ComputeHash(encodedInput);

        var encoded = BitConverter.ToString(hash).Replace("-", string.Empty).ToLower();

        return encoded;
    }
}