Read data from .pfx file for Digita Signature - by Dustbiin

Their is many way to read data for data for digital signature but hear we discus reading data from .pfx file - 

code for read .pfx file -

import java.io.FileInputStream;
import java.security.KeyStore;
import java.security.cert.X509Certificate;
import java.util.Date;
import java.util.Enumeration;

import javax.net.ssl.KeyManagerFactory;

public class PdfDemo
{
    public static void checkExpire()
    {
        try
        {
            KeyManagerFactory kmf = javax.net.ssl.KeyManagerFactory.getInstance( "SunX509" );
            KeyStore keystore = KeyStore.getInstance( "PKCS12" );
            char[] password = "123456".toCharArray();
            keystore.load( new FileInputStream( "demo.pfx" ), password );
            //keystore.load(new FileInputStream(certificate), password);
            kmf.init( keystore, password );
            Enumeration<String> aliases = keystore.aliases();
            while ( aliases.hasMoreElements() )
            {
                String alias = aliases.nextElement();
                if ( keystore.getCertificate( alias ).getType().equals( "X.509" ) )
                {
                    X509Certificate certificate = ( (X509Certificate) keystore.getCertificate( alias ) );
                    Date expDate = ( (X509Certificate) keystore.getCertificate( alias ) ).getNotAfter();
                    Date fromDate = ( (X509Certificate) keystore.getCertificate( alias ) ).getNotBefore();
                    String name = ( (X509Certificate) keystore.getCertificate( alias ) ).getSigAlgName();
                    System.out.println( "Certificate all data: " + certificate );
                    System.out.println( "Name : " + certificate.getPublicKey() );
                    System.out.println( "Exp Date:-" + expDate );
                    System.out.println( "From Date:-" + fromDate );
                    System.out.println( "Subject : " + certificate.getSubjectDN() );
                    System.out.println( "Issuer : " + certificate.getIssuerDN() );
                }
            }
        }
        catch ( Exception e )
        {
            e.printStackTrace();
        }
    }

    public static void main( String[] args )
    {
        checkExpire();
        System.out.println( "Reading done" );
    }
}

output -

Certificate all data: [
[
  Version: V3
  Subject: C=IN, EMAILADDRESS=demo@example.com, OU=, O=demo, CN=Dustbiin
  Signature Algorithm: SHA1withRSA, OID = 1.2.840.113549.1.1.5

  Key:  Sun RSA public key, 2048 bits
  params: null
  modulus: 265336066019994661758135761240893812139530528426649324371138054602283392649996035554374356246911836557614185165157636366942403105417393685285867558881503724078931096303789527923521284936006367618591171876828718638940643898340213452948430602163830253219825666276523963883067358233974561533676717442254513372596858439759177998432202366508679458231639303521679586613639935174856502865572148970757069628337038242721966925616052217419475221098081263584162242572578426856829874012418601575873513742699948808390895451364219283740151610117524821110127238427450659985255544100865448404804004521849709911765542184013
  public exponent: 65545
  Validity: [From: Thu May 07 23:12:56 IST 2020,
               To: Wed May 07 23:12:56 IST 2025]
  Issuer: C=IN, EMAILADDRESS=demo@example.com, OU=, O=demo, CN=Dustbiin
  SerialNumber: [   -1513ee55 233e240f 11f4]

Certificate Extensions: 2
[1]: ObjectId: 1.2.840.113583.1.1.10 Criticality=false
Extension unknown: DER encoded OCTET string =
0000: 04 02 05 00                                        ....


[2]: ObjectId: 2.5.29.15 Criticality=false
KeyUsage [
  DigitalSignature
  Data_Encipherment
  Key_Agreement
]

]
  Algorithm: [SHA1withRSA]
  Signature:
0000: 49 D5 07 DE 09 83 75 7A   AC 4D EB D1 F3 F9 4A 45  I.....uz.M....JE
0010: DB 7C 21 DE EF 90 3D 7B   B3 1F 2E 08 9A F2 3F D3  ..!...=.......?.
0020: 5E 35 40 D9 B0 9A 8A BF   BD 83 CE 66 64 3B EE 25  ^5@........fd;.%
0030: 5A 72 CF 39 61 42 68 F9   CD 5E 8A D8 3A 86 B1 2C  Zr.9aBh..^..:..,
0040: 26 85 E6 F1 5C AD E1 37   9C DF 6D A1 FD 40 AD F9  &...\..7..m..@..
0050: 21 3F 8A B4 5A E3 06 38   8E DA C5 24 13 29 85 3C  !?..Z..8...$.).<
0060: 80 ED A1 27 37 03 F9 AF   F2 96 0B 67 9A 16 65 5A  ...'7......g..eZ
0070: 5F B6 37 64 18 7F 97 A5   92 1D C7 B0 B0 49 10 60  _.7d.........I.`
0080: 82 01 52 2F 3A 41 0B C3   7B E1 02 5B 9C D6 24 4F  ..R/:A.....[..$O
0090: 2C EC 49 2A 4E E9 4E 9D   89 58 65 14 8C 0E 14 D9  ,.I*N.N..Xe.....
00A0: B8 C8 C5 76 B8 AB 81 EE   01 04 D4 8A F2 2B 1F BF  ...v.........+..
00B0: 3E A6 89 BE DA E6 79 BB   63 77 0A E7 56 EA 43 1E  >.....y.cw..V.C.
00C0: DC FE D4 97 17 F2 13 40   CC 98 6B A0 2A D1 B8 F7  .......@..k.*...
00D0: FF 3B C5 4A FD C1 79 7C   54 69 1F 0F DE B5 91 D5  .;.J..y.Ti......
00E0: 11 DD 19 57 CF E4 EE CC   BB 60 AE 19 FB D7 3A F1  ...W.....`....:.
00F0: 95 28 C6 3C E7 9A ED 93   39 7E 10 83 BE C5 36 FA  .(.<....9.....6.

]
Name : Sun RSA public key, 2048 bits
  params: null
  modulus: 26533606601999466175813576124089381213953052842664351419564739324371138054602283392649996035554374356246911836557614185165157636366942403105417393685285867558881503724078931096303789527923521284936006367618591171876828718638940643898340213452948430602163830253219825666276523963883067358233974561533676717442254513372596858439759177998432202366508679458231639303521679586613639935174856502865572148970757069628337038242721966925616052217419475221098081263584162242572578426856829874012418601575873513742699948808390895451364219283740151610117524821110127238427450659985255544100865448404804004521849709911765542184013
  public exponent: 65537
Expiray Date:-Wed May 07 23:12:56 IST 2025
From Date:-Thu May 07 23:12:56 IST 2020
Subject : C=IN, EMAILADDRESS=demo@example.com, OU=, O=demo, CN=Dustbiin
Issuer : C=IN, EMAILADDRESS=demo@example.com, OU=, O=demo, CN=Dustbiin
Reading done