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KeyUsage.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

KeyUsage.java：Code Content
  1. package org.bouncycastle.asn1.x509;
  3. import org.bouncycastle.asn1.*;
  5. /**
  6.  * <pre>
  7.  *    id-ce-keyUsage OBJECT IDENTIFIER ::=  { id-ce 15 }
  8.  *
  9.  *    KeyUsage ::= BIT STRING {
  10.  *         digitalSignature        (0),
  11.  *         nonRepudiation          (1),
  12.  *         keyEncipherment         (2),
  13.  *         dataEncipherment        (3),
  14.  *         keyAgreement            (4),
  15.  *         keyCertSign             (5),
  16.  *         cRLSign                 (6),
  17.  *         encipherOnly            (7),
  18.  *         decipherOnly            (8) }
  19.  * </pre>
  20.  */
  21. public class KeyUsage
  22.     extends DERBitString
  23. {
  24.     public static final int        digitalSignature = (1 << 7); 
  25.     public static final int        nonRepudiation   = (1 << 6);
  26.     public static final int        keyEncipherment  = (1 << 5);
  27.     public static final int        dataEncipherment = (1 << 4);
  28.     public static final int        keyAgreement     = (1 << 3);
  29.     public static final int        keyCertSign      = (1 << 2);
  30.     public static final int        cRLSign          = (1 << 1);
  31.     public static final int        encipherOnly     = (1 << 0);
  32.     public static final int        decipherOnly     = (1 << 15);
  34.     /**
  35.      * Basic constructor.
  36.      * 
  37.      * @param usage - the bitwise OR of the Key Usage flags giving the
  38.      * allowed uses for the key.
  39.      * e.g. (X509KeyUsage.keyEncipherment | X509KeyUsage.dataEncipherment)
  40.      */
  41.     public KeyUsage(
  42.         int usage)
  43.     {
  44.         super(getBytes(usage), getPadBits(usage));
  45.     }
  47.     public KeyUsage(
  48.         DERBitString usage)
  49.     {
  50.         super(usage.getBytes(), usage.getPadBits());
  51.     }
  53.     public String toString()
  54.     {
  55.         return "KeyUsage: 0x" + Integer.toHexString(data[0] & 0xff);
  56.     }
  57. }