| package org.bouncycastle.asn1.x509; |
| |
| import java.util.Enumeration; |
| |
| import org.bouncycastle.asn1.ASN1Encodable; |
| import org.bouncycastle.asn1.ASN1EncodableVector; |
| import org.bouncycastle.asn1.ASN1OctetString; |
| import org.bouncycastle.asn1.ASN1Sequence; |
| import org.bouncycastle.asn1.ASN1TaggedObject; |
| import org.bouncycastle.asn1.DERObject; |
| import org.bouncycastle.asn1.DEROctetString; |
| import org.bouncycastle.asn1.DERSequence; |
| |
| /** |
| * The DigestInfo object. |
| * <pre> |
| * DigestInfo::=SEQUENCE{ |
| * digestAlgorithm AlgorithmIdentifier, |
| * digest OCTET STRING } |
| * </pre> |
| */ |
| public class DigestInfo |
| extends ASN1Encodable |
| { |
| private byte[] digest; |
| private AlgorithmIdentifier algId; |
| |
| public static DigestInfo getInstance( |
| ASN1TaggedObject obj, |
| boolean explicit) |
| { |
| return getInstance(ASN1Sequence.getInstance(obj, explicit)); |
| } |
| |
| public static DigestInfo getInstance( |
| Object obj) |
| { |
| if (obj instanceof DigestInfo) |
| { |
| return (DigestInfo)obj; |
| } |
| else if (obj instanceof ASN1Sequence) |
| { |
| return new DigestInfo((ASN1Sequence)obj); |
| } |
| |
| throw new IllegalArgumentException("unknown object in factory"); |
| } |
| |
| public DigestInfo( |
| AlgorithmIdentifier algId, |
| byte[] digest) |
| { |
| this.digest = digest; |
| this.algId = algId; |
| } |
| |
| public DigestInfo( |
| ASN1Sequence obj) |
| { |
| Enumeration e = obj.getObjects(); |
| |
| algId = AlgorithmIdentifier.getInstance(e.nextElement()); |
| digest = ASN1OctetString.getInstance(e.nextElement()).getOctets(); |
| } |
| |
| public AlgorithmIdentifier getAlgorithmId() |
| { |
| return algId; |
| } |
| |
| public byte[] getDigest() |
| { |
| return digest; |
| } |
| |
| public DERObject toASN1Object() |
| { |
| ASN1EncodableVector v = new ASN1EncodableVector(); |
| |
| v.add(algId); |
| v.add(new DEROctetString(digest)); |
| |
| return new DERSequence(v); |
| } |
| } |