All Downloads are FREE. Search and download functionalities are using the official Maven repository.

org.bouncycastle.asn1.x509.SubjectPublicKeyInfo Maven / Gradle / Ivy

Go to download

The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.6.

There is a newer version: 1.46
Show newest version
package org.bouncycastle.asn1.x509;

import java.io.IOException;
import java.util.Enumeration;

import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1InputStream;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.DERBitString;
import org.bouncycastle.asn1.DEREncodable;
import org.bouncycastle.asn1.DERObject;
import org.bouncycastle.asn1.DERSequence;

/**
 * The object that contains the public key stored in a certficate.
 * 

* The getEncoded() method in the public keys in the JCE produces a DER * encoded one of these. */ public class SubjectPublicKeyInfo extends ASN1Encodable { 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: " + obj.getClass().getName()); } 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) { if (seq.size() != 2) { throw new IllegalArgumentException("Bad sequence size: " + seq.size()); } Enumeration e = seq.getObjects(); this.algId = AlgorithmIdentifier.getInstance(e.nextElement()); this.keyData = DERBitString.getInstance(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 { ASN1InputStream aIn = new ASN1InputStream(keyData.getBytes()); return aIn.readObject(); } /** * for when the public key is raw bits... */ public DERBitString getPublicKeyData() { return keyData; } /** * Produce an object suitable for an ASN1OutputStream. *

     * SubjectPublicKeyInfo ::= SEQUENCE {
     *                          algorithm AlgorithmIdentifier,
     *                          publicKey BIT STRING }
     * 
*/ public DERObject toASN1Object() { ASN1EncodableVector v = new ASN1EncodableVector(); v.add(algId); v.add(keyData); return new DERSequence(v); } }




© 2015 - 2024 Weber Informatics LLC | Privacy Policy