Examples of java.security.spec.X509EncodedKeySpec

java.security.spec.X509EncodedKeySpec
This class represents the ASN.1 encoding of a public key, encoded according to the ASN.1 type SubjectPublicKeyInfo. The SubjectPublicKeyInfo syntax is defined in the X.509 standard as follows:
```
 SubjectPublicKeyInfo ::= SEQUENCE { algorithm AlgorithmIdentifier, subjectPublicKey BIT STRING } 
```
@author Jan Luehe @version 1.22, 11/17/05 @see java.security.Key @see java.security.KeyFactory @see KeySpec @see EncodedKeySpec @see PKCS8EncodedKeySpec @since 1.2

                Messages.getString("security.0C", type, format)); //$NON-NLS-1$
        case PUBLIC:
            if ("X.509".equals(format)) { //$NON-NLS-1$
                try {
                    KeyFactory kf = KeyFactory.getInstance(algorithm);
                    return kf.generatePublic(new X509EncodedKeySpec(encoded));
                } catch (NoSuchAlgorithmException e) {
                    throw new NotSerializableException(
                            Messages.getString("security.0D", e)); //$NON-NLS-1$
                }
                catch (InvalidKeySpecException e) {

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                    return (T) (new DSAPublicKeySpec(y, p, q, g));
                }


                if (keySpec.equals(X509EncodedKeySpec.class)) {
                    return (T) (new X509EncodedKeySpec(key.getEncoded()));
                }


                throw new InvalidKeySpecException(Messages
                        .getString("security.19D")); //$NON-NLS-1$
            }

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                if (alg == null) {
                    alg = alg_oid;
                }
                publicKey = KeyFactory.getInstance(alg)
                    .generatePublic(new X509EncodedKeySpec(getEncoded()));
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        return publicKey;

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      String serverAddress = lineParts[0];
      String algorithm = lineParts[1];
      if (checkServerAddress.equals(serverAddress) && checkAlgorithm.equals(algorithm)) {
        byte[] key = Base64.decodeBase64(lineParts[2].getBytes());
        KeyFactory keyFactory = KeyFactory.getInstance(algorithm);
        X509EncodedKeySpec keySpec = new X509EncodedKeySpec(key);
        return keyFactory.generatePublic(keySpec);
      }
      line = reader.readLine();
    }
    return null;

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       {
               return new PKCS8EncodedKeySpec(key.getEncoded());
       }
       else if (spec.isAssignableFrom(X509EncodedKeySpec.class) && key.getFormat().equals("X.509"))
       {
               return new X509EncodedKeySpec(key.getEncoded());
       }
       else if (spec.isAssignableFrom(RSAPublicKeySpec.class) && key instanceof RSAPublicKey)
       {
            RSAPublicKey    k = (RSAPublicKey)key;

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    {
        SubjectPublicKeyInfo subjectPKInfo = pkac.getSubjectPublicKeyInfo();
        try
        {
            DERBitString bStr = new DERBitString(subjectPKInfo);
            X509EncodedKeySpec xspec = new X509EncodedKeySpec(bStr.getBytes());
            


            AlgorithmIdentifier keyAlg = subjectPKInfo.getAlgorithmId ();


            KeyFactory factory =

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    {
        SubjectPublicKeyInfo    subjectPKInfo = reqInfo.getSubjectPublicKeyInfo();


        try
        {
            X509EncodedKeySpec      xspec = new X509EncodedKeySpec(new DERBitString(subjectPKInfo).getBytes());
            AlgorithmIdentifier     keyAlg = subjectPKInfo.getAlgorithmId ();


            return KeyFactory.getInstance(keyAlg.getObjectId().getId (), provider).generatePublic(xspec);
        }
        catch (InvalidKeySpecException e)

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    }


    private PublicKey readPublicKey(String endMarker)
        throws IOException
    {
        KeySpec keySpec = new X509EncodedKeySpec(readBytes(endMarker));
        String[] algorithms = { "DSA", "RSA" };
        for (int i = 0; i < algorithms.length; i++) 
        {
            try 
            {

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            content = new DERBitString(pkac);


            SubjectPublicKeyInfo pubkeyinfo = new SubjectPublicKeyInfo(
                    (ASN1Sequence)pkac.getObjectAt(0));


            X509EncodedKeySpec xspec = new X509EncodedKeySpec(new DERBitString(
                    pubkeyinfo).getBytes());


            keyAlg = pubkeyinfo.getAlgorithmId();
            pubkey = KeyFactory.getInstance(keyAlg.getObjectId().getId(), "BC")
                    .generatePublic(xspec);

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        try {
            if (type == Type.SECRET && RAW.equals(format)) {
                return new SecretKeySpec(encoded, algorithm);
            } else if (type == Type.PUBLIC && X509.equals(format)) {
                KeyFactory f = KeyFactory.getInstance(algorithm);
                return f.generatePublic(new X509EncodedKeySpec(encoded));
            } else if (type == Type.PRIVATE && PKCS8.equals(format)) {
                KeyFactory f = KeyFactory.getInstance(algorithm);
                return f.generatePrivate(new PKCS8EncodedKeySpec(encoded));
            } else {
                throw new NotSerializableException

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