private boolean isTokenCommonName(final String inToken) {
        val st = new StringTokenizer(inToken, "=");
        return st.nextToken().equals(COMMON_NAME_VAR);
    }
This method determines whether or not the input token is the Common Name (CN).

@param inToken The input token to be tested
@return Returns boolean value indicating whether or not the token string is the Common Name (CN) number
support/cas-server-support-x509-core/src/main/java/org/apereo/cas/adaptors/x509/authentication/principal/X509ExtractorUtils.java