org.cryptacular.asn

Class AbstractPrivateKeyDecoder<T>

java.lang.Object

org.cryptacular.asn.AbstractPrivateKeyDecoder<T>

Type Parameters:

T - Type produced by decode operation.

All Implemented Interfaces:

ASN1Decoder<T>

Direct Known Subclasses:

OpenSSLPrivateKeyDecoder, PKCS8PrivateKeyDecoder

public abstract class AbstractPrivateKeyDecoder<T>
extends java.lang.Object
implements ASN1Decoder<T>

Base class for all private key decoders.

Constructor Summary

Constructors

Constructor and Description
AbstractPrivateKeyDecoder()

Method Summary

Modifier and Type	Method and Description
T	decode(byte[] encoded, java.lang.Object... args) Produces an object from an encoded representation.
protected abstract T	decodeASN1(byte[] encoded) Decodes the given raw ASN.1 encoded data into a private key of the type supported by this class.
protected abstract byte[]	decryptKey(byte[] encrypted, char[] password) Decrypts an encrypted key in either PKCS#8 or OpenSSL "traditional" format.
protected byte[]	tryConvertPem(byte[] input) Tests the given encoded input and converts it to PEM if it is detected, stripping out any header/footer data in the process.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AbstractPrivateKeyDecoder

public AbstractPrivateKeyDecoder()

Method Detail

decode

public T decode(byte[] encoded,
                java.lang.Object... args)
         throws EncodingException

Description copied from interface: ASN1Decoder

Produces an object from an encoded representation.

Specified by:

decode in interface ASN1Decoder<T>

Parameters:

encoded - ASN.1 encoded data.

args - Additional data required to perform decoding.

Returns:

Decoded object.

Throws:

EncodingException - on encoding errors.

tryConvertPem

protected byte[] tryConvertPem(byte[] input)

Tests the given encoded input and converts it to PEM if it is detected, stripping out any header/footer data in the process.

Parameters:

input - Encoded data that may be PEM encoded.

Returns:

Decoded data if PEM encoding detected, otherwise original data.

decryptKey

protected abstract byte[] decryptKey(byte[] encrypted,
                                     char[] password)

Decrypts an encrypted key in either PKCS#8 or OpenSSL "traditional" format. Both PEM and DER encodings are supported.

Parameters:

encrypted - Encoded encrypted key data.

password - Password to decrypt key.

Returns:

Decrypted key.

decodeASN1

protected abstract T decodeASN1(byte[] encoded)

Decodes the given raw ASN.1 encoded data into a private key of the type supported by this class.

Parameters:

encoded - Encoded ASN.1 data.

Returns:

Private key object.