?? attribute.java
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package org.bouncycastle.asn1.cms;import org.bouncycastle.asn1.*;public class Attribute implements DEREncodable{ private DERObjectIdentifier attrType; private ASN1Set attrValues; /** * return an Attribute object from the given object. * * @param o the object we want converted. * @exception IllegalArgumentException if the object cannot be converted. */ public static Attribute getInstance( Object o) { if (o == null || o instanceof Attribute) { return (Attribute)o; } if (o instanceof ASN1Sequence) { return new Attribute((ASN1Sequence)o); } throw new IllegalArgumentException("unknown object in factory"); } public Attribute( ASN1Sequence seq) { attrType = (DERObjectIdentifier)seq.getObjectAt(0); attrValues = (ASN1Set)seq.getObjectAt(1); } public Attribute( DERObjectIdentifier attrType, ASN1Set attrValues) { this.attrType = attrType; this.attrValues = attrValues; } public DERObjectIdentifier getAttrType() { return attrType; } public ASN1Set getAttrValues() { return attrValues; } /** * <pre> * Attribute ::= SEQUENCE { * attrType OBJECT IDENTIFIER, * attrValues SET OF AttributeValue * } * </pre> */ public DERObject getDERObject() { ASN1EncodableVector v = new ASN1EncodableVector(); v.add(attrType); v.add(attrValues); return new DERSequence(v); }}?? 快捷鍵說明
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