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SMIMECapability.java
Package: security.rar　[view]
Upload User: lior1029
Upload Date: 2013-05-07
Package Size: 209k
Code Size: 2k
Category:

CA program

Development Platform:

Java

SMIMECapability.java：Code Content
  1. package org.bouncycastle.asn1.smime;
  3. import org.bouncycastle.asn1.ASN1Sequence;
  4. import org.bouncycastle.asn1.DERSequence;
  5. import org.bouncycastle.asn1.DEREncodable;
  6. import org.bouncycastle.asn1.DEREncodableVector;
  7. import org.bouncycastle.asn1.DERObject;
  8. import org.bouncycastle.asn1.DERObjectIdentifier;
  10. import org.bouncycastle.asn1.pkcs.PKCSObjectIdentifiers;
  12. public class SMIMECapability
  13.     implements DEREncodable
  14. {
  15.     /**
  16.      * general preferences
  17.      */
  18.     public static final DERObjectIdentifier preferSignedData = PKCSObjectIdentifiers.preferSignedData;
  19.     public static final DERObjectIdentifier canNotDecryptAny = PKCSObjectIdentifiers.canNotDecryptAny;
  20.     public static final DERObjectIdentifier sMIMECapabilitiesVersions = PKCSObjectIdentifiers.sMIMECapabilitiesVersions;
  22.     /**
  23.      * encryption algorithms preferences
  24.      */
  25.     public static final DERObjectIdentifier dES_CBC = new DERObjectIdentifier("1.3.14.3.2.7");
  26.     public static final DERObjectIdentifier dES_EDE3_CBC = PKCSObjectIdentifiers.des_EDE3_CBC;
  27.     public static final DERObjectIdentifier rC2_CBC = PKCSObjectIdentifiers.RC2_CBC;
  29. private DERObjectIdentifier capabilityID;
  30. private DEREncodable        parameters;
  32. public SMIMECapability(
  33.         ASN1Sequence seq)
  34.     {
  35. capabilityID = (DERObjectIdentifier)seq.getObjectAt(0);
  37. if (seq.size() > 1)
  38.         {
  39. parameters = (DERObject)seq.getObjectAt(1);
  40. }
  41. }
  43. public SMIMECapability(
  44.         DERObjectIdentifier capabilityID,
  45.         DEREncodable parameters)
  46.     {
  47. this.capabilityID = capabilityID;
  48. this.parameters = parameters;
  49. }
  51. public static SMIMECapability getInstance(
  52.         Object obj)
  53.     {
  54. if (obj == null || obj instanceof SMIMECapability)
  55.         {
  56. return (SMIMECapability)obj;
  57. }
  59. if (obj instanceof ASN1Sequence)
  60.         {
  61. return new SMIMECapability((ASN1Sequence)obj);
  62. }
  64. throw new IllegalArgumentException("Invalid SMIMECapability");
  65. } 
  67.     public DERObjectIdentifier getCapabilityID()
  68.     {
  69. return capabilityID;
  70.     }
  72.     public DEREncodable getParameters()
  73.     {
  74. return parameters;
  75.     }
  77.     /**
  78.      * <pre> 
  79.      * SMIMECapability ::= SEQUENCE {
  80.      *  capabilityID OBJECT IDENTIFIER,
  81.      *  parameters ANY DEFINED BY capabilityID OPTIONAL 
  82.      * }
  83.      * </pre>
  84.      */
  85. public DERObject getDERObject()
  86.     {
  87.         DEREncodableVector  v = new DEREncodableVector();
  89. v.add(capabilityID);
  91. if (parameters != null)
  92.         {
  93. v.add(parameters);
  94. }
  96. return new DERSequence(v);
  97. }
  98. }