+++ /dev/null
-package org.bouncycastle.asn1.x509;
-
-import java.io.*;
-import java.util.Enumeration;
-
-import org.bouncycastle.asn1.*;
-
-/**
- * The object that contains the public key stored in a certficate.
- * <p>
- * The getEncoded() method in the public keys in the JCE produces a DER
- * encoded one of these.
- */
-public class SubjectPublicKeyInfo
- implements DEREncodable
-{
- private AlgorithmIdentifier algId;
- private DERBitString keyData;
-
- public static SubjectPublicKeyInfo getInstance(
- ASN1TaggedObject obj,
- boolean explicit)
- {
- return getInstance(ASN1Sequence.getInstance(obj, explicit));
- }
-
- public static SubjectPublicKeyInfo getInstance(
- Object obj)
- {
- if (obj instanceof SubjectPublicKeyInfo)
- {
- return (SubjectPublicKeyInfo)obj;
- }
- else if (obj instanceof ASN1Sequence)
- {
- return new SubjectPublicKeyInfo((ASN1Sequence)obj);
- }
-
- throw new IllegalArgumentException("unknown object in factory");
- }
-
- public SubjectPublicKeyInfo(
- AlgorithmIdentifier algId,
- DEREncodable publicKey)
- {
- this.keyData = new DERBitString(publicKey);
- this.algId = algId;
- }
-
- public SubjectPublicKeyInfo(
- AlgorithmIdentifier algId,
- byte[] publicKey)
- {
- this.keyData = new DERBitString(publicKey);
- this.algId = algId;
- }
-
- public SubjectPublicKeyInfo(
- ASN1Sequence seq)
- {
- Enumeration e = seq.getObjects();
-
- this.algId = AlgorithmIdentifier.getInstance(e.nextElement());
- this.keyData = (DERBitString)e.nextElement();
- }
-
- public AlgorithmIdentifier getAlgorithmId()
- {
- return algId;
- }
-
- /**
- * for when the public key is an encoded object - if the bitstring
- * can't be decoded this routine throws an IOException.
- *
- * @exception IOException - if the bit string doesn't represent a DER
- * encoded object.
- */
- public DERObject getPublicKey()
- throws IOException
- {
- ByteArrayInputStream bIn = new ByteArrayInputStream(keyData.getBytes());
- DERInputStream dIn = new DERInputStream(bIn);
-
- return dIn.readObject();
- }
-
- /**
- * for when the public key is raw bits...
- */
- public DERBitString getPublicKeyData()
- {
- return keyData;
- }
-
- /**
- * <pre>
- * SubjectPublicKeyInfo ::= SEQUENCE {
- * algorithm AlgorithmIdentifier,
- * publicKey BIT STRING }
- * </pre>
- */
- public DERObject getDERObject()
- {
- DERConstructedSequence seq = new DERConstructedSequence();
-
- seq.addObject(algId);
- seq.addObject(keyData);
-
- return seq;
- }
-}