Package com.maverick.crypto.asn1

Examples of com.maverick.crypto.asn1.ASN1InputStream

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                // The length of the next certificate (we dont need this as rthe
                // DERInputStream does the work
                int certlen = (in.read() & 0xFF) << 16 | (in.read() & 0xFF) << 8 | (in.read() & 0xFF);

                // Now read the certificate
                DERInputStream der = new DERInputStream(in);

                ASN1Sequence certificate = (ASN1Sequence) der.readObject();

                // Get the x509 certificate structure
                chainCert = new X509Certificate(X509CertificateStructure.getInstance(certificate));

                if (x509 == null)
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    public static void main(String[] args) {

        try {
            SSLContext ssl = new SSLContext();
            // Now read the certificate
            DERInputStream der = new DERInputStream(new FileInputStream("c:/exported.cer")); //$NON-NLS-1$

            ASN1Sequence certificate = (ASN1Sequence) der.readObject();

            // Get the x509 certificate structure
            X509Certificate x509 = new X509Certificate(X509CertificateStructure.getInstance(certificate));

            System.out.println(x509.getIssuerDN());
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                            MD5Digest digest = new MD5Digest();
                            digest.update(x509.getTBSCertificate(), 0, x509.getTBSCertificate().length);
                            byte[] hash = new byte[digest.getDigestSize()];
                            digest.doFinal(hash, 0);

                            DERInputStream der = new DERInputStream(new ByteArrayInputStream(sig));

                            ASN1Sequence o = (ASN1Sequence) der.readObject();

                            ASN1Sequence o1 = (ASN1Sequence) o.getObjectAt(0);

                            DERObjectIdentifier o2 = (DERObjectIdentifier) o1.getObjectAt(0);
                            ASN1OctetString o3 = (ASN1OctetString) o.getObjectAt(1);

                            byte[] actual = o3.getOctets();

                            for (int i = 0; i < actual.length; i++) {
                                if (actual[i] != hash[i]) {
                                    return false;
                                }
                            }

                        } catch (IOException ex1) {
                            throw new SSLException(SSLException.INTERNAL_ERROR, ex1.getMessage());
                        }

                    } else if (x509.getSigAlgName().equals("SHA1WithRSAEncryption")) { //$NON-NLS-1$

                        try {
                            byte[] blob = x509.getSignature();

                            // Check for signed bit
                            if ((blob[0] & 0x80) == 0x80) {
                                blob = new byte[x509.getSignature().length + 1];
                                blob[0] = 0;
                                System.arraycopy(x509.getSignature(), 0, blob, 1, x509.getSignature().length);
                            }

                            BigInteger input = new BigInteger(blob);
                            RsaPublicKey r = (RsaPublicKey) trusted.getPublicKey();

                            BigInteger decoded = Rsa.doPublic(input, r.getModulus(), r.getPublicExponent());

                            BigInteger result = Rsa.removePKCS1(decoded, 0x01);
                            byte[] sig = result.toByteArray();

                            SHA1Digest digest = new SHA1Digest();
                            digest.update(x509.getTBSCertificate(), 0, x509.getTBSCertificate().length);
                            byte[] hash = new byte[digest.getDigestSize()];
                            digest.doFinal(hash, 0);

                            DERInputStream der = new DERInputStream(new ByteArrayInputStream(sig));

                            ASN1Sequence o = (ASN1Sequence) der.readObject();

                            ASN1Sequence o1 = (ASN1Sequence) o.getObjectAt(0);

                            DERObjectIdentifier o2 = (DERObjectIdentifier) o1.getObjectAt(0);
                            ASN1OctetString o3 = (ASN1OctetString) o.getObjectAt(1);
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    public static void main(String[] args) {

        TrustedCACertStore store = new TrustedCACertStore();

        DERInputStream der = null;
        InputStream in = null;
        try {
            in = new FileInputStream("c:\\exported.cer"); //$NON-NLS-1$
            der = new DERInputStream(in);

            ASN1Sequence certificate = (ASN1Sequence) der.readObject();
            com.maverick.crypto.asn1.x509.X509Certificate x509 = new com.maverick.crypto.asn1.x509.X509Certificate(X509CertificateStructure.getInstance(certificate));

            /*
             * if (store.isTrustedCertificate(x509, false, false)) {
             * //System.out.println("Success"); } else {
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        return (X509Certificate) certificates.get(sig);
    }

    public void addTrustedCACertificate(InputStream in) {

        DERInputStream der = null;
        try {

            der = new DERInputStream(in);

            ASN1Sequence certificate = (ASN1Sequence) der.readObject();

            X509Certificate x509 = new X509Certificate(X509CertificateStructure.getInstance(certificate));

            if (certificates.containsKey(x509.getSubjectDN().toString())) {
                // #ifdef DEBUG
                if (log.isDebugEnabled())
                    log.debug(Messages.getString("CertificateStore.alreadyExists") + x509.getSubjectDN().toString()); //$NON-NLS-1$
                // #endif
            } else {
                // #ifdef DEBUG
                if (log.isDebugEnabled())
                    log.debug(MessageFormat.format(Messages.getString("CertificateStore.addingTrustedCA"), new Object[] { x509.getSubjectDN().toString() })); //$NON-NLS-1$
                // #endif
                certificates.put(x509.getSubjectDN().toString(), x509);
            }
        } catch (Exception ex) {
            ex.printStackTrace();
        } finally {
            try {
                if (in != null) {
                    in.close();
                }
            } catch (IOException ex) {
            }
            try {
                if (der != null) {
                    der.close();
                }
            } catch (IOException ex) {
            }
        }
    }
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            version = DERInteger.getInstance(seq.getObjectAt(0));
        }
        else
        {
            seqStart = -1;          // field 0 is missing!
            version = new DERInteger(0);
        }

        serialNumber = DERInteger.getInstance(seq.getObjectAt(seqStart + 1));

        signature = AlgorithmIdentifier.getInstance(seq.getObjectAt(seqStart + 2));
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     */
    public DERObject getDERObject()
    {
        ASN1EncodableVector  v = new ASN1EncodableVector();

        v.add(new DERInteger(getModulus()));
        v.add(new DERInteger(getPublicExponent()));

        return new DERSequence(v);
    }
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        int     pathLenConstraint)
    {
      if (cA )
      {
          this.cA = new DERBoolean(cA);
          this.pathLenConstraint = new DERInteger(pathLenConstraint);
      }
      else
      {
        this.cA = null;
        this.pathLenConstraint = null;
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   */
  public BasicConstraints(
    int     pathLenConstraint)
  {
    this.cA = new DERBoolean(true);
    this.pathLenConstraint = new DERInteger(pathLenConstraint);
  }
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        e = this.ordering.elements();

        while (e.hasMoreElements())
        {
            DERObjectIdentifier     oid = (DERObjectIdentifier)e.nextElement();
            X509Extension           ext = (X509Extension)extensions.get(oid);

            this.extensions.put(oid, ext);
        }
    }
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