MD5 String validieren

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/// <summary>
/// Determines whether [is valid M d5] [the specified candidate].
/// </summary>
/// <param name="candidate">The candidate.</param>
/// <returns>
/// 	<c>true</c> if [is valid M d5] [the specified candidate]; otherwise, <c>false</c>.
/// </returns>
public static bool IsValidMD5(string candidate)
{
    if (string.IsNullOrEmpty(candidate))
        return false;

    Regex isMD5 = new Regex(@"^([a-fA-F0-9]){32}$");
    return isMD5.IsMatch(candidate);
}