Certificado A1 exemplo

package br.com.javac.util;

import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.security.KeyStore;
import java.security.Provider;
import java.security.cert.X509Certificate;
import java.util.Enumeration;

public class DadosCertificadoA1 {

    @SuppressWarnings("static-access")
    public static void main(String[] args) {

        try {
            String caminhoDoCertificadoDoCliente = "C:/JavaC/NF-e/certificadoDoCliente.pfx";
            String senhaDoCertificadoDoCliente = "1234";

            InputStream entrada = new FileInputStream(caminhoDoCertificadoDoCliente);
            KeyStore ks = KeyStore.getInstance("pkcs12");
            try {
                ks.load(entrada, senhaDoCertificadoDoCliente.toCharArray());
            } catch (IOException e) {
                throw new Exception("Senha do Certificado Digital incorreta ou Certificado inválido.");
            }

            Provider pp = ks.getProvider();
            info("--------------------------------------------------------");
            info("Provider   : " + pp.getName());
            info("Prov.Vers. : " + pp.getVersion());
            info("KS Type    : " + ks.getType());
            info("KS DefType : " + ks.getDefaultType());

            String alias = null;
            Enumeration <String> al = ks.aliases();
            while (al.hasMoreElements()) {
                alias = al.nextElement();
                info("--------------------------------------------------------");
                if (ks.containsAlias(alias)) {
                    info("Alias exists : '" + alias + "'");

                    X509Certificate cert = (X509Certificate) ks.getCertificate(alias);
                    info("Certificate  : '" + cert.toString() + "'");
                    info("Version      : '" + cert.getVersion() + "'");
                    info("SerialNumber : '" + cert.getSerialNumber() + "'");
                    info("SigAlgName   : '" + cert.getSigAlgName() + "'");
                    info("NotBefore    : '" + cert.getNotBefore().toString() + "'");
                    info("NotAfter     : '" + cert.getNotAfter().toString() + "'");
                    info("TBS          : '" + cert.getTBSCertificate().toString() + "'");
                } else {
                    info("Alias doesn't exists : '" + alias + "'");
                }
            }
        } catch (Exception e) {
            error(e.toString());
        }
    }

    /**
     * Log ERROR.
     *
     * @param error
     */
    private static void error(String error) {
        System.out.println("| ERROR: " + error);
    }

    /**
     * Log INFO.
     *
     * @param info
     */
    private static void info(String info) {
        System.out.println("| INFO: " + info);
    }

}