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SignerInfo.java
资源名称：security.rar　[点击查看]
上传用户：lior1029
上传日期：2013-05-07
资源大小：209k
文件大小：5k
源码类别：

CA认证

开发平台：

Java

SignerInfo.java：源码内容
  1. package org.bouncycastle.asn1.pkcs;
  3. import java.util.Enumeration;
  5. import org.bouncycastle.asn1.*;
  6. import org.bouncycastle.asn1.x509.*;
  8. /**
  9.  * a PKCS#7 signer info object.
  10.  */
  11. public class SignerInfo
  12.     implements DEREncodable
  13. {
  14.     private DERInteger              version;
  15.     private IssuerAndSerialNumber   issuerAndSerialNumber;
  16.     private AlgorithmIdentifier     digAlgorithm;
  17.     private ASN1Set                 authenticatedAttributes;
  18.     private AlgorithmIdentifier     digEncryptionAlgorithm;
  19.     private ASN1OctetString         encryptedDigest;
  20.     private ASN1Set                 unauthenticatedAttributes;
  22.     public static SignerInfo getInstance(
  23.         Object  o)
  24.     {
  25.         if (o instanceof SignerInfo)
  26.         {
  27.             return (SignerInfo)o;
  28.         }
  29.         else if (o instanceof ASN1Sequence)
  30.         {
  31.             return new SignerInfo((ASN1Sequence)o);
  32.         }
  34.         throw new IllegalArgumentException("unknown object in factory");
  35.     }
  37.     public SignerInfo(
  38.         DERInteger              version,
  39.         IssuerAndSerialNumber   issuerAndSerialNumber,
  40.         AlgorithmIdentifier     digAlgorithm,
  41.         ASN1Set                 authenticatedAttributes,
  42.         AlgorithmIdentifier     digEncryptionAlgorithm,
  43.         ASN1OctetString         encryptedDigest,
  44.         ASN1Set                 unauthenticatedAttributes)
  45.     {
  46.         this.version = version;
  47.         this.issuerAndSerialNumber = issuerAndSerialNumber;
  48.         this.digAlgorithm = digAlgorithm;
  49.         this.authenticatedAttributes = authenticatedAttributes;
  50.         this.digEncryptionAlgorithm = digEncryptionAlgorithm;
  51.         this.encryptedDigest = encryptedDigest;
  52.         this.unauthenticatedAttributes = unauthenticatedAttributes;
  53.     }
  55.     public SignerInfo(
  56.         ASN1Sequence seq)
  57.     {
  58.         Enumeration     e = seq.getObjects();
  60.         version = (DERInteger)e.nextElement();
  61.         issuerAndSerialNumber = IssuerAndSerialNumber.getInstance(e.nextElement());
  62.         digAlgorithm = AlgorithmIdentifier.getInstance(e.nextElement());
  64.         Object obj = e.nextElement();
  66.         if (obj instanceof ASN1TaggedObject)
  67.         {
  68.             authenticatedAttributes = ASN1Set.getInstance((ASN1TaggedObject)obj, false);
  70.             digEncryptionAlgorithm = AlgorithmIdentifier.getInstance(e.nextElement());
  71.         }
  72.         else
  73.         {
  74.             authenticatedAttributes = null;
  75.             digEncryptionAlgorithm = AlgorithmIdentifier.getInstance(obj);
  76.         }
  78.         encryptedDigest = DEROctetString.getInstance(e.nextElement());
  80.         if (e.hasMoreElements())
  81.         {
  82.             unauthenticatedAttributes = ASN1Set.getInstance((ASN1TaggedObject)e.nextElement(), false);
  83.         }
  84.         else
  85.         {
  86.             unauthenticatedAttributes = null;
  87.         }
  88.     }
  90.     public DERInteger getVersion()
  91.     {
  92.         return version;
  93.     }
  95.     public IssuerAndSerialNumber getIssuerAndSerialNumber()
  96.     {
  97.         return issuerAndSerialNumber;
  98.     }
  100.     public ASN1Set getAuthenticatedAttributes()
  101.     {
  102.         return authenticatedAttributes;
  103.     }
  105.     public AlgorithmIdentifier getDigestAlgorithm()
  106.     {
  107.         return digAlgorithm;
  108.     }
  110.     public ASN1OctetString getEncryptedDigest()
  111.     {
  112.         return encryptedDigest;
  113.     }
  115.     public AlgorithmIdentifier getDigestEncryptionAlgorithm()
  116.     {
  117.         return digEncryptionAlgorithm;
  118.     }
  120.     public ASN1Set getUnauthenticatedAttributes()
  121.     {
  122.         return unauthenticatedAttributes;
  123.     }
  125.     /**
  126.      * <pre>
  127.      *  SignerInfo ::= SEQUENCE {
  128.      *      version Version,
  129.      *      issuerAndSerialNumber IssuerAndSerialNumber,
  130.      *      digestAlgorithm DigestAlgorithmIdentifier,
  131.      *      authenticatedAttributes [0] IMPLICIT Attributes OPTIONAL,
  132.      *      digestEncryptionAlgorithm DigestEncryptionAlgorithmIdentifier,
  133.      *      encryptedDigest EncryptedDigest,
  134.      *      unauthenticatedAttributes [1] IMPLICIT Attributes OPTIONAL
  135.      *  }
  136.      *
  137.      *  EncryptedDigest ::= OCTET STRING
  138.      *
  139.      *  DigestAlgorithmIdentifier ::= AlgorithmIdentifier
  140.      *
  141.      *  DigestEncryptionAlgorithmIdentifier ::= AlgorithmIdentifier
  142.      * </pre>
  143.      */
  144.     public DERObject getDERObject()
  145.     {
  146.         ASN1EncodableVector v = new ASN1EncodableVector();
  148.         v.add(version);
  149.         v.add(issuerAndSerialNumber);
  150.         v.add(digAlgorithm);
  152.         if (authenticatedAttributes != null)
  153.         {
  154.             v.add(new DERTaggedObject(false, 0, authenticatedAttributes));
  155.         }
  157.         v.add(digEncryptionAlgorithm);
  158.         v.add(encryptedDigest);
  160.         if (unauthenticatedAttributes != null)
  161.         {
  162.             v.add(new DERTaggedObject(false, 1, unauthenticatedAttributes));
  163.         }
  165.         return new DERSequence(v);
  166.     }
  167. }