diff options
Diffstat (limited to 'libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/x509/DigestInfo.java')
-rw-r--r-- | libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/x509/DigestInfo.java | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/x509/DigestInfo.java b/libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/x509/DigestInfo.java new file mode 100644 index 000000000..b5f5cf61d --- /dev/null +++ b/libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/x509/DigestInfo.java @@ -0,0 +1,86 @@ +package org.spongycastle.asn1.x509; + +import java.util.Enumeration; + +import org.spongycastle.asn1.ASN1EncodableVector; +import org.spongycastle.asn1.ASN1Object; +import org.spongycastle.asn1.ASN1OctetString; +import org.spongycastle.asn1.ASN1Primitive; +import org.spongycastle.asn1.ASN1Sequence; +import org.spongycastle.asn1.ASN1TaggedObject; +import org.spongycastle.asn1.DEROctetString; +import org.spongycastle.asn1.DERSequence; + +/** + * The DigestInfo object. + * <pre> + * DigestInfo::=SEQUENCE{ + * digestAlgorithm AlgorithmIdentifier, + * digest OCTET STRING } + * </pre> + */ +public class DigestInfo + extends ASN1Object +{ + 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 != null) + { + return new DigestInfo(ASN1Sequence.getInstance(obj)); + } + + return null; + } + + 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 ASN1Primitive toASN1Primitive() + { + ASN1EncodableVector v = new ASN1EncodableVector(); + + v.add(algId); + v.add(new DEROctetString(digest)); + + return new DERSequence(v); + } +} |