| package org.bouncycastle.asn1.cms; |
| |
| import org.bouncycastle.asn1.ASN1EncodableVector; |
| import org.bouncycastle.asn1.ASN1Object; |
| import org.bouncycastle.asn1.ASN1Primitive; |
| import org.bouncycastle.asn1.ASN1Sequence; |
| import org.bouncycastle.asn1.ASN1TaggedObject; |
| import org.bouncycastle.asn1.DERBitString; |
| import org.bouncycastle.asn1.DERSequence; |
| import org.bouncycastle.asn1.x509.AlgorithmIdentifier; |
| |
| /** |
| * <a href="http://tools.ietf.org/html/rfc5652#section-6.2.2">RFC 5652</a>: |
| * Content encryption key delivery mechanisms. |
| * <p> |
| * <pre> |
| * OriginatorPublicKey ::= SEQUENCE { |
| * algorithm AlgorithmIdentifier, |
| * publicKey BIT STRING |
| * } |
| * </pre> |
| */ |
| public class OriginatorPublicKey |
| extends ASN1Object |
| { |
| private AlgorithmIdentifier algorithm; |
| private DERBitString publicKey; |
| |
| public OriginatorPublicKey( |
| AlgorithmIdentifier algorithm, |
| byte[] publicKey) |
| { |
| this.algorithm = algorithm; |
| this.publicKey = new DERBitString(publicKey); |
| } |
| |
| /** |
| * @deprecated use getInstance() |
| */ |
| public OriginatorPublicKey( |
| ASN1Sequence seq) |
| { |
| algorithm = AlgorithmIdentifier.getInstance(seq.getObjectAt(0)); |
| publicKey = (DERBitString)seq.getObjectAt(1); |
| } |
| |
| /** |
| * Return an OriginatorPublicKey object from a tagged object. |
| * |
| * @param obj the tagged object holding the object we want. |
| * @param explicit true if the object is meant to be explicitly |
| * tagged false otherwise. |
| * @exception IllegalArgumentException if the object held by the |
| * tagged object cannot be converted. |
| */ |
| public static OriginatorPublicKey getInstance( |
| ASN1TaggedObject obj, |
| boolean explicit) |
| { |
| return getInstance(ASN1Sequence.getInstance(obj, explicit)); |
| } |
| |
| /** |
| * Return an OriginatorPublicKey object from the given object. |
| * <p> |
| * Accepted inputs: |
| * <ul> |
| * <li> null → null |
| * <li> {@link OriginatorPublicKey} object |
| * <li> {@link org.bouncycastle.asn1.ASN1Sequence#getInstance(java.lang.Object) ASN1Sequence} input formats with OriginatorPublicKey structure inside |
| * </ul> |
| * |
| * @param obj the object we want converted. |
| * @exception IllegalArgumentException if the object cannot be converted. |
| */ |
| public static OriginatorPublicKey getInstance( |
| Object obj) |
| { |
| if (obj instanceof OriginatorPublicKey) |
| { |
| return (OriginatorPublicKey)obj; |
| } |
| |
| if (obj != null) |
| { |
| return new OriginatorPublicKey(ASN1Sequence.getInstance(obj)); |
| } |
| |
| return null; |
| } |
| |
| public AlgorithmIdentifier getAlgorithm() |
| { |
| return algorithm; |
| } |
| |
| public DERBitString getPublicKey() |
| { |
| return publicKey; |
| } |
| |
| /** |
| * Produce an object suitable for an ASN1OutputStream. |
| */ |
| public ASN1Primitive toASN1Primitive() |
| { |
| ASN1EncodableVector v = new ASN1EncodableVector(); |
| |
| v.add(algorithm); |
| v.add(publicKey); |
| |
| return new DERSequence(v); |
| } |
| } |