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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 1.5 to JDK 1.8.

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package org.bouncycastle.asn1.x509;

import org.bouncycastle.asn1.ASN1Integer;
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.pkcs.PKCSObjectIdentifiers;
import org.bouncycastle.asn1.x500.X500Name;

/**
 * an X509Certificate structure.
 * 
 *  Certificate ::= SEQUENCE {
 *      tbsCertificate          TBSCertificate,
 *      signatureAlgorithm      AlgorithmIdentifier,
 *      signature               BIT STRING
 *  }
 * 
* @deprecated use org.bouncycastle.asn1.x509.Certificate */ public class X509CertificateStructure extends ASN1Object implements X509ObjectIdentifiers, PKCSObjectIdentifiers { ASN1Sequence seq; TBSCertificateStructure tbsCert; AlgorithmIdentifier sigAlgId; DERBitString sig; public static X509CertificateStructure getInstance( ASN1TaggedObject obj, boolean explicit) { return getInstance(ASN1Sequence.getInstance(obj, explicit)); } public static X509CertificateStructure getInstance( Object obj) { if (obj instanceof X509CertificateStructure) { return (X509CertificateStructure)obj; } else if (obj != null) { return new X509CertificateStructure(ASN1Sequence.getInstance(obj)); } return null; } public X509CertificateStructure( ASN1Sequence seq) { this.seq = seq; // // correct x509 certficate // if (seq.size() == 3) { tbsCert = TBSCertificateStructure.getInstance(seq.getObjectAt(0)); sigAlgId = AlgorithmIdentifier.getInstance(seq.getObjectAt(1)); sig = DERBitString.getInstance(seq.getObjectAt(2)); } else { throw new IllegalArgumentException("sequence wrong size for a certificate"); } } public TBSCertificateStructure getTBSCertificate() { return tbsCert; } public int getVersion() { return tbsCert.getVersion(); } public ASN1Integer getSerialNumber() { return tbsCert.getSerialNumber(); } public X500Name getIssuer() { return tbsCert.getIssuer(); } public Time getStartDate() { return tbsCert.getStartDate(); } public Time getEndDate() { return tbsCert.getEndDate(); } public X500Name getSubject() { return tbsCert.getSubject(); } public SubjectPublicKeyInfo getSubjectPublicKeyInfo() { return tbsCert.getSubjectPublicKeyInfo(); } public AlgorithmIdentifier getSignatureAlgorithm() { return sigAlgId; } public DERBitString getSignature() { return sig; } public ASN1Primitive toASN1Primitive() { return seq; } }




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