Examples of java.security.spec.PKCS8EncodedKeySpec

java.security.spec.PKCS8EncodedKeySpec
This class represents the ASN.1 encoding of a private key, encoded according to the ASN.1 type PrivateKeyInfo. The PrivateKeyInfo syntax is defined in the PKCS#8 standard as follows:
```
 PrivateKeyInfo ::= SEQUENCE { version Version, privateKeyAlgorithm PrivateKeyAlgorithmIdentifier, privateKey PrivateKey, attributes [0] IMPLICIT Attributes OPTIONAL } Version ::= INTEGER PrivateKeyAlgorithmIdentifier ::= AlgorithmIdentifier PrivateKey ::= OCTET STRING Attributes ::= SET OF Attribute 
```
@author Jan Luehe @version 1.22, 11/17/05 @see java.security.Key @see java.security.KeyFactory @see KeySpec @see EncodedKeySpec @see X509EncodedKeySpec @since 1.2

        //
        byte[]              privEnc = privKey.getEncoded();


        keyFac = KeyFactory.getInstance(privKey.getAlgorithm(), "BC");


        PKCS8EncodedKeySpec privPKCS8 = new PKCS8EncodedKeySpec(privEnc);
        privKey = (PrivateKey)keyFac.generatePrivate(privPKCS8);


        keyFac = KeyFactory.getInstance(privKey.getAlgorithm(), "BC");
        privPKCS8 = new PKCS8EncodedKeySpec(privEnc);
        privKey = (PrivateKey)keyFac.generatePrivate(privPKCS8);
    }

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        if (!sInfo.getPrivateKeyAlgorithm().getParameters().equals(DERNull.INSTANCE))
        {
            fail("private key parameters wrong");
        }


        ECPrivateKey sKey = (ECPrivateKey)kFact.generatePrivate(new PKCS8EncodedKeySpec(bytes));


        if (!sKey.equals(privKey))
        {
            fail("private equals failed");
        }

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                 {
                     return kf.generatePublic(new X509EncodedKeySpec(encoded));
                 }
                 else if (wrappedKeyType == Cipher.PRIVATE_KEY)
                 {
                     return kf.generatePrivate(new PKCS8EncodedKeySpec(encoded));
                 }
             }
             catch (NoSuchProviderException e)
             {
                 throw new InvalidKeyException("Unknown key type " + e.getMessage());

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                info = new PrivateKeyInfo(new AlgorithmIdentifier(X9ObjectIdentifiers.id_ecPublicKey, params), info.parsePrivateKey());


                KeyFactory keyFact = KeyFactory.getInstance(key.getAlgorithm(), provider);


                return keyFact.generatePrivate(new PKCS8EncodedKeySpec(info.getEncoded()));
            }
        }
        catch (IllegalArgumentException e)
        {
            throw e;

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        //
        // private key encoding test
        //
        byte[]              privEnc = keyPair.getPrivate().getEncoded();
        PKCS8EncodedKeySpec privPKCS8 = new PKCS8EncodedKeySpec(privEnc);
        DHPrivateKey        privKey = (DHPrivateKey)keyFac.generatePrivate(privPKCS8);


        spec = privKey.getParams();


        if (!spec.getG().equals(elParams.getG()) || !spec.getP().equals(elParams.getP()))

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        //
        // private key encoding test
        //
        byte[]              privEnc = keyPair.getPrivate().getEncoded();
        PKCS8EncodedKeySpec privPKCS8 = new PKCS8EncodedKeySpec(privEnc);
        DHPrivateKey        privKey = (DHPrivateKey)keyFac.generatePrivate(privPKCS8);


        spec = privKey.getParams();


        if (!spec.getG().equals(elParams.getG()) || !spec.getP().equals(elParams.getP()))

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                {
                    return kf.generatePublic(new X509EncodedKeySpec(encoded));
                }
                else if (wrappedKeyType == Cipher.PRIVATE_KEY)
                {
                    return kf.generatePrivate(new PKCS8EncodedKeySpec(encoded));
                }
            }
            catch (NoSuchProviderException e)
            {
                throw new InvalidKeyException("Unknown key type " + e.getMessage());

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    protected KeySpec engineGetKeySpec(Key key, Class keySpec)
        throws InvalidKeySpecException
    {
        if (keySpec.isAssignableFrom(PKCS8EncodedKeySpec.class) && key.getFormat().equals("PKCS#8"))
        {
            return new PKCS8EncodedKeySpec(key.getEncoded());
        }
        else if (keySpec.isAssignableFrom(X509EncodedKeySpec.class) && key.getFormat().equals("X.509"))
        {
            return new X509EncodedKeySpec(key.getEncoded());
        }

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        dIn.readFully(enc);


        if (format.equals("PKCS#8") || format.equals("PKCS8"))
        {
            spec = new PKCS8EncodedKeySpec(enc);
        }
        else if (format.equals("X.509") || format.equals("X509"))
        {
            spec = new X509EncodedKeySpec(enc);
        }

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        //
        // private key encoding test
        //
        byte[]              privEnc = aKeyPair.getPrivate().getEncoded();
        PKCS8EncodedKeySpec privPKCS8 = new PKCS8EncodedKeySpec(privEnc);
        ECPrivateKey        privKey = (ECPrivateKey)keyFac.generatePrivate(privPKCS8);


        if (!privKey.getS().equals(((ECPrivateKey)aKeyPair.getPrivate()).getS()))
        {
            fail("private key encoding (S test) failed");

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