Examples of org.apache.geronimo.util.asn1.ASN1InputStream

org.apache.geronimo.util.asn1.ASN1InputStream
a general purpose ASN.1 decoder - note: this class differs from the others in that it returns null after it has read the last object in the stream. If an ASN.1 NULL is encountered a DER/BER Null object is returned.

        {
            this.pkcs12Attributes = new Hashtable();
            this.pkcs12Ordering = new Vector();


            ByteArrayInputStream    bIn = new ByteArrayInputStream((byte[])obj);
            ASN1InputStream         aIn = new ASN1InputStream(bIn);


            DERObjectIdentifier    oid;


            while ((oid = (DERObjectIdentifier)aIn.readObject()) != null)
            {
                this.setBagAttribute(oid, aIn.readObject());
            }
        }


        this.privateExponent = (BigInteger)in.readObject();
    }

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                    //
                    try
                    {
                        return new JCERSAPrivateCrtKey(
                            new RSAPrivateKeyStructure(
                                (ASN1Sequence)new ASN1InputStream(new ByteArrayInputStream(((PKCS8EncodedKeySpec)keySpec).getEncoded())).readObject()));
                    }
                    catch (Exception ex)
                    {
                        throw new InvalidKeySpecException(ex.toString());
                    }

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     */
    public DERObject getPublicKey()
        throws IOException
    {
        ByteArrayInputStream    bIn = new ByteArrayInputStream(keyData.getBytes());
        ASN1InputStream         aIn = new ASN1InputStream(bIn);


        return aIn.readObject();
    }

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    static PublicKey createPublicKeyFromDERStream(
        InputStream         in)
        throws IOException
    {
        return createPublicKeyFromPublicKeyInfo(
                new SubjectPublicKeyInfo((ASN1Sequence)(new ASN1InputStream(in).readObject())));
    }

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    static PrivateKey createPrivateKeyFromDERStream(
        InputStream         in)
        throws IOException
    {
        return createPrivateKeyFromPrivateKeyInfo(
                new PrivateKeyInfo((ASN1Sequence)(new ASN1InputStream(in).readObject())));
    }

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    private String generateCSR(X509Certificate cert, PrivateKey signingKey) throws InvalidKeyException, NoSuchAlgorithmException, NoSuchProviderException, SignatureException, KeyStoreException, IOException {
        String sigalg = cert.getSigAlgName();
        X509Name subject;
        try{
            ASN1InputStream ais = new ASN1InputStream(cert.getEncoded());
            X509CertificateStructure x509Struct = new X509CertificateStructure((ASN1Sequence)ais.readObject());
            ais.close();
            subject = x509Struct.getSubject();
        } catch(CertificateEncodingException e) {
            log.warn(e.toString()+" while retrieving subject from certificate to create CSR.  Using subjectDN instead.");
            subject = new X509Name(cert.getSubjectDN().toString());
        }

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    /**
     * This method returns a X509Name object corresponding to the subject in a given certificate
     * @param cert Certificate from which subject needs to be retrieved
     */
    public static X509Name getSubjectX509Name(Certificate cert) throws CertificateEncodingException, IOException {
        ASN1InputStream ais = new ASN1InputStream(cert.getEncoded());
        X509CertificateStructure x509Struct = new X509CertificateStructure((ASN1Sequence)ais.readObject());
        ais.close();
        return x509Struct.getSubject();
    }

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    /**
     * This method returns a X509Name object corresponding to a given principal
     */
    public static X509Name getX509Name(X500Principal principal) throws CertificateEncodingException, IOException {
        ASN1InputStream ais = new ASN1InputStream(principal.getEncoded());
        X509Name name = new X509Name((ASN1Sequence)ais.readObject());
        ais.close();
        return name;
    }

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     * @return a Map with Subject, public-key and challenge 
     */
    public static Map processSPKAC(String spkac) throws IOException, NoSuchAlgorithmException, InvalidKeyException, SignatureException, Exception {
        Map map = new HashMap();
        byte[]data = Base64.decode(spkac);
        ASN1InputStream ais = new ASN1InputStream(new ByteArrayInputStream(data));
        DERSequence spkacSeq = (DERSequence)ais.readObject();


        // SPKAC = SEQ {PKAC, SIGN-ALG, SIGN}
        // Get PKAC and obtain PK and C
        DERSequence pkacSeq = (DERSequence)spkacSeq.getObjectAt(0);
        DERObject pk = (DERObject)pkacSeq.getObjectAt(0);

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    public static void main(
        String args[])
        throws Exception
    {
        FileInputStream fIn = new FileInputStream(args[0]);
        ASN1InputStream bIn = new ASN1InputStream(fIn);
        Object          obj = null;


        while ((obj = bIn.readObject()) != null)
        {
            System.out.println(ASN1Dump.dumpAsString(obj));
        }
    }

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