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Signature.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：2k
源码类别：

CA认证

开发平台：

Java

Signature.java：源码内容
  1. package org.bouncycastle.asn1.ocsp;
  3. import org.bouncycastle.asn1.ASN1Sequence;
  4. import org.bouncycastle.asn1.ASN1TaggedObject;
  5. import org.bouncycastle.asn1.DERSequence;
  6. import org.bouncycastle.asn1.DERObject;
  7. import org.bouncycastle.asn1.DERBitString;
  8. import org.bouncycastle.asn1.DERTaggedObject;
  9. import org.bouncycastle.asn1.DEREncodable;
  10. import org.bouncycastle.asn1.ASN1EncodableVector;
  11. import org.bouncycastle.asn1.x509.AlgorithmIdentifier;
  13. public class Signature
  14.     implements DEREncodable
  15. {
  16. AlgorithmIdentifier signatureAlgorithm;
  17. DERBitString signature;
  18. ASN1Sequence certs;
  20. public Signature(
  21. ASN1Sequence seq)
  22. {
  23. signatureAlgorithm  = AlgorithmIdentifier.getInstance(seq.getObjectAt(0));
  24. signature = (DERBitString)seq.getObjectAt(1);
  26. if (seq.size() == 3)
  27. {
  28. certs = ASN1Sequence.getInstance(
  29. (ASN1TaggedObject)seq.getObjectAt(2), true);
  30. }
  31. }
  33.     public static Signature getInstance(
  34.         ASN1TaggedObject obj,
  35.         boolean          explicit)
  36.     {
  37.         return getInstance(ASN1Sequence.getInstance(obj, explicit));
  38.     }
  40.     public static Signature getInstance(
  41.         Object  obj)
  42.     {
  43.         if (obj == null || obj instanceof Signature)
  44.         {
  45.             return (Signature)obj;
  46.         }
  47.         else if (obj instanceof ASN1Sequence)
  48.         {
  49.             return new Signature((ASN1Sequence)obj);
  50.         }
  52.         throw new IllegalArgumentException("unknown object in factory");
  53.     }
  55. public AlgorithmIdentifier getSignatureAlgorithm()
  56. {
  57. return signatureAlgorithm;
  58. }
  60. public DERBitString getSignature()
  61. {
  62. return signature;
  63. }
  65. public ASN1Sequence getCerts()
  66. {
  67. return certs;
  68. }
  70. /**
  71.  * <pre>
  72.  * Signature       ::=     SEQUENCE {
  73.  *     signatureAlgorithm      AlgorithmIdentifier,
  74.  *     signature               BIT STRING,
  75.  *     certs               [0] EXPLICIT SEQUENCE OF Certificate OPTIONAL}
  76.  * </pre>
  77.  */
  78. public DERObject getDERObject()
  79. {
  80. ASN1EncodableVector v = new ASN1EncodableVector();
  82. v.add(signatureAlgorithm);
  83. v.add(signature);
  85. if (certs != null)
  86. {
  87. v.add(new DERTaggedObject(true, 0, certs));
  88. }
  90. return new DERSequence(v);
  91. }
  92. }